{"id":1924,"date":"2026-04-06T09:59:18","date_gmt":"2026-04-06T01:59:18","guid":{"rendered":"https:\/\/eve2333.top\/?p=1924"},"modified":"2026-04-06T09:59:18","modified_gmt":"2026-04-06T01:59:18","slug":"%e6%89%8b%e6%90%93rag%e7%b3%bb%e7%bb%9f-ragent-ai%ef%bc%8812%ef%bc%89","status":"publish","type":"post","link":"https:\/\/eve2333.top\/?p=1924","title":{"rendered":"\u624b\u6413RAG\u7cfb\u7edf \u2013 Ragent AI\uff0812\uff09"},"content":{"rendered":"\n

SSE\u534f\u8bae\u4e0e\u6d41\u5f0f\u54cd\u5e94<\/h1>\n\n\n\n

SSE \u534f\u8bae\uff1a\u4e0d\u53ea\u662f data:<\/code> \u5f00\u5934\u7684\u6587\u672c<\/h2>\n\n\n\n

1. SSE \u662f\u4ec0\u4e48<\/h3>\n\n\n\n

SSE \u5168\u79f0 Server-Sent Events\uff0c\u76f4\u8bd1\u5c31\u662f\u670d\u52a1\u7aef\u53d1\u9001\u7684\u4e8b\u4ef6\u3002\u5b83\u662f HTML \u6807\u51c6\u7684\u4e00\u90e8\u5206\uff0c\u76ee\u524d\u7684\u6743\u5a01\u89c4\u8303\u5728 WHATWG HTML Living Standard \u91cc\uff0c\u5b9a\u4e49\u4e86 text\/event-stream<\/code> \u8fd9\u5957\u4e8b\u4ef6\u6d41\u683c\u5f0f\u548c\u6d4f\u89c8\u5668\u7aef\u7684 EventSource<\/code> API\u3002<\/p>\n\n\n\n

\u4e00\u53e5\u8bdd\u603b\u7ed3\uff1a\u57fa\u4e8e HTTP \u7684\u5355\u5411\u670d\u52a1\u7aef\u63a8\u9001\u534f\u8bae<\/strong>\u3002<\/p>\n\n\n\n

\u5ba2\u6237\u7aef\u53d1\u8d77\u4e00\u4e2a\u666e\u901a\u7684 HTTP \u8bf7\u6c42\uff0c\u670d\u52a1\u7aef\u4fdd\u6301\u8fde\u63a5\u4e0d\u5173\u95ed\uff0c\u6301\u7eed\u5411\u5ba2\u6237\u7aef\u63a8\u9001\u4e8b\u4ef6\u3002\u6ce8\u610f\u662f\u5355\u5411<\/strong>\u7684\u2014\u2014\u53ea\u6709\u670d\u52a1\u7aef\u5f80\u5ba2\u6237\u7aef\u63a8\uff0c\u5ba2\u6237\u7aef\u4e0d\u80fd\u901a\u8fc7\u540c\u4e00\u4e2a\u8fde\u63a5\u5f80\u670d\u52a1\u7aef\u53d1\u6570\u636e\u3002<\/p>\n\n\n\n

\u548c\u666e\u901a HTTP \u8bf7\u6c42\u7684\u533a\u522b\u5f88\u76f4\u89c2\uff1a<\/p>\n\n\n\n

    \n
  • \u666e\u901a HTTP<\/strong>\uff1a\u5ba2\u6237\u7aef\u53d1\u8bf7\u6c42 \u2192 \u670d\u52a1\u7aef\u8fd4\u56de\u5b8c\u6574\u54cd\u5e94 \u2192 \u8fde\u63a5\u5173\u95ed\u3002\u4e00\u95ee\u4e00\u7b54\u3002<\/li>\n\n\n\n
  • SSE<\/strong>\uff1a\u5ba2\u6237\u7aef\u53d1\u8bf7\u6c42 \u2192 \u670d\u52a1\u7aef\u6301\u7eed\u63a8\u9001\u4e8b\u4ef6 \u2192 \u63a8\u5b8c\u4e86\u6216\u5ba2\u6237\u7aef\u4e3b\u52a8\u65ad\u5f00 \u2192 \u8fde\u63a5\u5173\u95ed\u3002\u4e00\u95ee\u591a\u7b54\u3002<\/li>\n<\/ul>\n\n\n\n

    \u6253\u4e2a\u6bd4\u65b9\uff1a\u666e\u901a HTTP \u50cf\u53d1\u77ed\u4fe1\uff0c\u4f60\u53d1\u4e00\u6761\u6211\u56de\u4e00\u6761\uff0c\u6bcf\u6b21\u90fd\u662f\u72ec\u7acb\u7684\u3002SSE \u50cf\u6253\u7535\u8bdd\uff0c\u62e8\u901a\u4e4b\u540e\u5bf9\u65b9\u4e00\u76f4\u5728\u8bf4\uff08\u4f60\u53ea\u9700\u8981\u542c\uff09\uff0c\u8bf4\u5b8c\u4e86\u518d\u6302\u3002<\/p>\n\n\n\n

    SSE \u54cd\u5e94\u6709\u4e00\u4e2a\u6807\u5fd7\u6027\u7684 HTTP \u5934\uff1a<\/p>\n\n\n\n

    Content-Type: text\/event-stream<\/code><\/pre>\n\n\n\n
    \u6d4f\u89c8\u5668\u548c HTTP \u5ba2\u6237\u7aef\u770b\u5230\u8fd9\u4e2a Content-Type\uff0c\u5c31\u77e5\u9053\u8fd9\u662f\u4e00\u4e2a SSE \u6d41\uff0c\u6211\u8981\u6309 SSE \u7684\u89c4\u5219\u6765\u89e3\u6790\u3002<\/p>\n\n\n\n
    2. SSE \u7684\u5b8c\u6574\u5b57\u6bb5\u683c\u5f0f<\/h3>\n\n\n\n
    \u5176\u5b9e SSE \u89c4\u8303\u4e00\u5171\u5b9a\u4e49\u4e86\u56db\u4e2a\u5b57\u6bb5\u548c\u4e00\u4e2a\u6ce8\u91ca\u673a\u5236<\/strong>\uff0c\u6bcf\u4e2a\u90fd\u6709\u660e\u786e\u7684\u7528\u9014\u3002\u4e00\u4e2a\u5b8c\u6574\u7684 SSE \u4e8b\u4ef6\u6d41\u957f\u8fd9\u6837\uff1a<\/p>\n\n\n\n
    retry: 3000: \u8fd9\u662f\u4e00\u6761\u6ce8\u91ca\uff0c\u5ba2\u6237\u7aef\u4f1a\u5ffd\u7565\n\nid: 1\nevent: message\ndata: {\"content\":\"\u4f60\u597d\"}\n\nid: 2\nevent: token\ndata: {\"content\":\"\uff0c\"}\n\nid: 3\nevent: token\ndata: {\"content\":\"\u6709\u4ec0\u4e48\u53ef\u4ee5\u5e2e\u4f60\uff1f\"}\n\nid: 4\nevent: done\ndata: {\"status\":\"completed\", \"total_tokens\":128}<\/code><\/pre>\n\n\n\n
    \u9010\u4e2a\u6765\u770b\u3002<\/p>\n\n\n\n
    2.1 data:<\/code> \u5b57\u6bb5\u2014\u2014\u4e8b\u4ef6\u6570\u636e<\/h4>\n\n\n\n
    \u4f60\u6700\u719f\u6089\u7684\u5b57\u6bb5\u3002\u6bcf\u884c\u4ee5 data:<\/code> \u5f00\u5934\uff0c\u540e\u9762\u8ddf\u7684\u662f\u4e8b\u4ef6\u7684\u6570\u636e\u5185\u5bb9\u3002<\/p>\n\n\n\n
    data: {\"content\":\"\u4f60\u597d\"}<\/code><\/pre>\n\n\n\n
    \u4e00\u4e2a\u4e8b\u4ef6\u53ef\u4ee5\u6709\u591a\u884c data:<\/code>\uff0c\u5b83\u4eec\u4f1a\u88ab\u6362\u884c\u7b26 \\n<\/code> \u62fc\u63a5\u8d77\u6765\uff1a<\/p>\n\n\n\n
    data: \u7b2c\u4e00\u884c\ndata: \u7b2c\u4e8c\u884c\ndata: \u7b2c\u4e09\u884c<\/code><\/pre>\n\n\n\n
    \u5ba2\u6237\u7aef\u6536\u5230\u7684\u6570\u636e\u662f \u7b2c\u4e00\u884c\\n\u7b2c\u4e8c\u884c\\n\u7b2c\u4e09\u884c<\/code>\u3002<\/p>\n\n\n\n
    \u4e00\u4e2a\u4e8b\u4ef6\u4ee5\u4e24\u4e2a\u8fde\u7eed\u6362\u884c\uff08\u7a7a\u884c\uff09\u7ed3\u675f<\/strong>\u3002\u8fd9\u662f SSE \u7684\u4e8b\u4ef6\u8fb9\u754c\u6807\u5fd7\u2014\u2014\u89e3\u6790\u5668\u770b\u5230\u7a7a\u884c\u5c31\u77e5\u9053\u4e0a\u4e00\u4e2a\u4e8b\u4ef6\u7ed3\u675f\u4e86\uff0c\u8be5\u5904\u7406\u5b83\u4e86\u3002<\/p>\n\n\n\n
    2.2 event:<\/code> \u5b57\u6bb5\u2014\u2014\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u7c7b\u578b<\/h4>\n\n\n\n
    \u5982\u679c\u4e0d\u5199 event:<\/code> \u5b57\u6bb5\uff0c\u4e8b\u4ef6\u7684\u7c7b\u578b\u9ed8\u8ba4\u662f message<\/code>\u3002\u901a\u8fc7 event:<\/code> \u5b57\u6bb5\u53ef\u4ee5\u7ed9\u4e8b\u4ef6\u6307\u5b9a\u81ea\u5b9a\u4e49\u7c7b\u578b\uff1a<\/p>\n\n\n\n
    event: token\ndata: {\"content\":\"\u4f60\u597d\"}\n\nevent: error\ndata: {\"code\":429, \"message\":\"rate limit exceeded\"}\n\nevent: done\ndata: {\"total_tokens\":128}<\/code><\/pre>\n\n\n\n
    \u8fd9\u6837\u5ba2\u6237\u7aef\u53ef\u4ee5\u6839\u636e\u4e8b\u4ef6\u7c7b\u578b\u505a\u4e0d\u540c\u7684\u5904\u7406\u2014\u2014\u6536\u5230 token<\/code> \u4e8b\u4ef6\u5c31\u62fc\u63a5\u5185\u5bb9\uff0c\u6536\u5230 error<\/code> \u4e8b\u4ef6\u5c31\u5c55\u793a\u9519\u8bef\uff0c\u6536\u5230 done<\/code> \u4e8b\u4ef6\u5c31\u7ed3\u675f\u6d41\u3002<\/p>\n\n\n\n
    \u5927\u6a21\u578b API\uff08OpenAI\u3001SiliconFlow \u7b49\uff09\u901a\u5e38\u4e0d\u4f7f\u7528<\/strong> event:<\/code> \u5b57\u6bb5\uff0c\u6240\u6709\u4e8b\u4ef6\u90fd\u662f\u9ed8\u8ba4\u7684 message<\/code> \u7c7b\u578b\uff0c\u9760 data:<\/code> \u91cc\u7684 JSON \u5185\u5bb9\u6765\u533a\u5206\u3002\u4f46\u5982\u679c\u4f60\u81ea\u5df1\u642d\u5efa SSE \u670d\u52a1\u7aef\uff0cevent:<\/code> \u5b57\u6bb5\u5c31\u5f88\u6709\u7528\u4e86\u2014\u2014\u4e0b\u4e00\u7bc7 Spring Boot SSE \u670d\u52a1\u7aef\u5b9e\u6218\u4f1a\u7528\u5230\u3002<\/p>\n\n\n\n
    2.3 id:<\/code> \u5b57\u6bb5\u2014\u2014\u4e8b\u4ef6 ID<\/h4>\n\n\n\n
    \u6bcf\u4e2a\u4e8b\u4ef6\u53ef\u4ee5\u6709\u4e00\u4e2a ID\uff1a<\/p>\n\n\n\n
    id: 42\ndata: {\"content\":\"\u8fd9\u662f\u7b2c 42 \u4e2a\u4e8b\u4ef6\"}<\/code><\/pre>\n\n\n\n
    id:<\/code> \u5b57\u6bb5\u7684\u6838\u5fc3\u4f5c\u7528\u662f\u652f\u6301\u65ad\u7ebf\u91cd\u8fde<\/strong>\u3002\u673a\u5236\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n
      \n
    1. 1.\u670d\u52a1\u7aef\u7ed9\u6bcf\u4e2a\u4e8b\u4ef6\u7f16\u4e00\u4e2a id:<\/code><\/li>\n\n\n\n
    2. 2.\u5ba2\u6237\u7aef\u5185\u90e8\u4f1a\u8bb0\u4f4f\u6700\u540e\u6536\u5230\u7684\u4e8b\u4ef6 ID<\/li>\n\n\n\n
    3. 3.\u5982\u679c\u8fde\u63a5\u65ad\u5f00\uff0c\u5ba2\u6237\u7aef\u91cd\u8fde\u65f6\u4f1a\u5728 HTTP \u8bf7\u6c42\u5934\u91cc\u5e26\u4e0a Last-Event-ID: 42<\/code><\/li>\n\n\n\n
    4. 4.\u670d\u52a1\u7aef\u770b\u5230\u8fd9\u4e2a\u5934\uff0c\u5c31\u77e5\u9053\u5ba2\u6237\u7aef\u5df2\u7ecf\u6536\u5230\u4e86 ID 42 \u4e4b\u524d\u7684\u6240\u6709\u4e8b\u4ef6\uff0c\u4ece ID 43 \u5f00\u59cb\u7ee7\u7eed\u63a8\u9001<\/li>\n<\/ol>\n\n\n\n
      \u8fd9\u4e2a\u673a\u5236\u8ba9 SSE \u5929\u7136\u652f\u6301\u65ad\u70b9\u7eed\u4f20<\/strong>\u2014\u2014\u8fde\u63a5\u65ad\u4e86\u4e0d\u7528\u4ece\u5934\u6765\uff0c\u4ece\u4e0a\u6b21\u65ad\u5f00\u7684\u5730\u65b9\u63a5\u7740\u63a8\u3002\u4e0d\u8fc7\u5927\u6a21\u578b API \u901a\u5e38\u4e0d\u4f7f\u7528<\/strong> id:<\/code> \u5b57\u6bb5\u3002\u56e0\u4e3a\u5927\u6a21\u578b\u7684\u6d41\u5f0f\u751f\u6210\u662f\u4e00\u6b21\u6027\u7684\u2014\u2014\u5185\u5bb9\u662f\u5b9e\u65f6\u751f\u6210\u7684\uff0c\u65ad\u4e86\u5c31\u6ca1\u6cd5\u4ece\u65ad\u70b9\u63a5\u7740\u751f\u6210\uff0c\u53ea\u80fd\u91cd\u65b0\u8bf7\u6c42\u3002<\/p>\n\n\n\n
      2.4 retry:<\/code> \u5b57\u6bb5\u2014\u2014\u91cd\u8fde\u95f4\u9694<\/h4>\n\n\n\n
      \u670d\u52a1\u7aef\u53ef\u4ee5\u901a\u8fc7 retry:<\/code> \u544a\u8bc9\u5ba2\u6237\u7aef\u5982\u679c\u8fde\u63a5\u65ad\u4e86\uff0c\u7b49\u591a\u4e45\u518d\u91cd\u8fde\uff1a<\/p>\n\n\n\n
      retry: 5000\ndata: {\"content\":\"\u8fde\u63a5\u5df2\u5efa\u7acb\"}<\/code><\/pre>\n\n\n\n
      retry: 5000<\/code> \u7684\u610f\u601d\u662f\u5982\u679c\u8fde\u63a5\u65ad\u4e86\uff0c\u7b49 5000 \u6beb\u79d2\uff085 \u79d2\uff09\u518d\u5c1d\u8bd5\u91cd\u8fde\u3002\u8fd9\u4e2a\u5b57\u6bb5\u901a\u5e38\u53ea\u5728\u8fde\u63a5\u5efa\u7acb\u540e\u53d1\u9001\u4e00\u6b21\u3002<\/p>\n\n\n\n
      \u6d4f\u89c8\u5668\u539f\u751f\u7684 EventSource<\/code> API \u4f1a\u81ea\u52a8\u5904\u7406\u91cd\u8fde\uff08\u9ed8\u8ba4\u95f4\u9694\u7ea6 3 \u79d2\uff09\u3002\u4f46\u5728 Java \u5ba2\u6237\u7aef\u91cc\uff0c\u4f60\u9700\u8981\u81ea\u5df1\u5b9e\u73b0\u91cd\u8fde\u903b\u8f91\u2014\u2014OkHttp \u7684 HTTP \u5ba2\u6237\u7aef\u4e0d\u4f1a\u81ea\u52a8\u6309 retry:<\/code> \u7684\u503c\u91cd\u8fde\u3002<\/p>\n\n\n\n
      2.5 \u6ce8\u91ca\u884c\u2014\u2014\u5fc3\u8df3\u4fdd\u6d3b<\/h4>\n\n\n\n
      \u4ee5\u5192\u53f7 :<\/code> \u5f00\u5934\u7684\u884c\u662f\u6ce8\u91ca\uff0c\u5ba2\u6237\u7aef\u4f1a\u76f4\u63a5\u5ffd\u7565\uff1a<\/p>\n\n\n\n
      : this is a comment\n: keepalive<\/code><\/pre>\n\n\n\n
      \u6ce8\u91ca\u770b\u8d77\u6765\u6ca1\u4ec0\u4e48\u7528\uff0c\u4f46\u5728\u751f\u4ea7\u73af\u5883\u6709\u4e00\u4e2a\u5f88\u91cd\u8981\u7684\u4f5c\u7528\u2014\u2014\u5fc3\u8df3\u4fdd\u6d3b<\/strong>\u3002<\/p>\n\n\n\n
      \u95ee\u9898\u80cc\u666f\uff1aSSE \u8fde\u63a5\u5728\u6570\u636e\u63a8\u9001\u7684\u95f4\u9699\u53ef\u80fd\u957f\u65f6\u95f4\u6ca1\u6709\u6570\u636e\u4f20\u8f93\uff08\u6bd4\u5982\u5927\u6a21\u578b\u5728\u601d\u8003\uff0c\u51e0\u79d2\u751a\u81f3\u5341\u51e0\u79d2\u6ca1\u6709\u8f93\u51fa\uff09\u3002\u5982\u679c\u4e2d\u95f4\u7ecf\u8fc7\u4e86 Nginx\u3001\u8d1f\u8f7d\u5747\u8861\u5668\u3001CDN \u7b49\u4e2d\u95f4\u4ef6\uff0c\u5b83\u4eec\u53ef\u80fd\u4f1a\u8ba4\u4e3a\u8fd9\u4e2a\u8fde\u63a5\u5df2\u7ecf\u6b7b\u4e86\uff0c\u4e3b\u52a8\u628a\u8fde\u63a5\u65ad\u6389\u3002<\/p>\n\n\n\n
      \u89e3\u51b3\u65b9\u6848\uff1a\u670d\u52a1\u7aef\u5b9a\u671f\u53d1\u9001\u4e00\u4e2a\u7a7a\u6ce8\u91ca : keepalive\\n\\n<\/code> \u6216\u8005 :\\n\\n<\/code>\uff0c\u5ba2\u6237\u7aef\u4f1a\u5ffd\u7565\u5b83\uff0c\u4f46\u4e2d\u95f4\u4ef6\u770b\u5230\u6709\u6570\u636e\u5728\u4f20\u8f93\uff0c\u5c31\u4e0d\u4f1a\u8d85\u65f6\u65ad\u5f00\u8fde\u63a5\u3002<\/p>\n\n\n\n
      SSE vs WebSocket vs \u957f\u8f6e\u8be2<\/h2>\n\n\n\n
      \u4f60\u53ef\u80fd\u4f1a\u597d\u5947\uff1a\u4e3a\u4ec0\u4e48\u5927\u6a21\u578b API \u90fd\u7528 SSE\uff1f\u4e0d\u662f\u8fd8\u6709 WebSocket \u5417\uff1fWebSocket \u4e0d\u662f\u66f4\u9ad8\u7ea7\u5417\uff1f<\/p>\n\n\n\n
      1. \u4e09\u79cd\u65b9\u6848\u7684\u672c\u8d28\u533a\u522b<\/h3>\n\n\n\n
      \u5148\u641e\u6e05\u695a\u4e09\u79cd\u5b9e\u65f6\u901a\u4fe1\u65b9\u6848\u5404\u81ea\u662f\u4ec0\u4e48\uff1a<\/p>\n\n\n\n
        \n
      • \u957f\u8f6e\u8be2\uff08Long Polling\uff09<\/strong>\uff1a\u5ba2\u6237\u7aef\u53d1\u8bf7\u6c42\uff0c\u670d\u52a1\u7aef\u5982\u679c\u6ca1\u6709\u65b0\u6570\u636e\u5c31 hold \u4f4f\u4e0d\u8fd4\u56de\uff08\u800c\u4e0d\u662f\u7acb\u523b\u8fd4\u56de\u7a7a\uff09\uff0c\u7b49\u6709\u65b0\u6570\u636e\u4e86\u518d\u8fd4\u56de\u3002\u5ba2\u6237\u7aef\u6536\u5230\u54cd\u5e94\u540e\u7acb\u523b\u518d\u53d1\u4e00\u4e2a\u65b0\u8bf7\u6c42\u3002\u672c\u8d28\u4e0a\u8fd8\u662f\u4e00\u95ee\u4e00\u7b54\uff0c\u53ea\u662f\u6bcf\u6b21\u7b54\u7684\u7b49\u5f85\u65f6\u95f4\u53d8\u957f\u4e86\u3002<\/li>\n\n\n\n
      • SSE\uff08Server-Sent Events\uff09<\/strong>\uff1a\u5ba2\u6237\u7aef\u53d1\u4e00\u4e2a HTTP \u8bf7\u6c42\uff0c\u670d\u52a1\u7aef\u4fdd\u6301\u8fde\u63a5\uff0c\u6301\u7eed\u5355\u5411\u63a8\u9001\u6570\u636e\u3002\u57fa\u4e8e HTTP\uff0c\u53ea\u80fd\u670d\u52a1\u7aef\u5f80\u5ba2\u6237\u7aef\u63a8\u3002<\/li>\n\n\n\n
      • WebSocket<\/strong>\uff1a\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u901a\u8fc7\u4e00\u6b21 HTTP \u63e1\u624b\u5347\u7ea7\u5230 WebSocket \u534f\u8bae\uff0c\u4e4b\u540e\u53cc\u65b9\u53ef\u4ee5\u968f\u65f6\u4e92\u53d1\u6d88\u606f\u3002\u8fd9\u662f\u4e00\u4e2a\u72ec\u7acb\u4e8e HTTP \u7684\u5168\u53cc\u5de5\u534f\u8bae\u3002<\/li>\n<\/ul>\n\n\n\n
        2. \u4e3a\u4ec0\u4e48\u5927\u6a21\u578b API \u9009\u4e86 SSE<\/h3>\n\n\n\n
        \u4e3b\u8981\u662f\u56db\u4e2a\u539f\u56e0\uff1a<\/p>\n\n\n\n
          \n
        • \u65b9\u5411\u5339\u914d<\/strong>\uff1a\u5927\u6a21\u578b\u6d41\u5f0f\u8f93\u51fa\u662f\u5178\u578b\u7684\u670d\u52a1\u7aef\u2192\u5ba2\u6237\u7aef\u5355\u5411\u63a8\u9001\u2014\u2014\u6a21\u578b\u751f\u6210\u5185\u5bb9\uff0c\u9010\u5757\u53d1\u7ed9\u4f60\u3002\u4f60\u4e0d\u9700\u8981\u5728\u540c\u4e00\u4e2a\u8fde\u63a5\u4e0a\u5f80\u670d\u52a1\u7aef\u53d1\u6570\u636e\uff08\u4f60\u7684\u95ee\u9898\u5728\u7b2c\u4e00\u6b21 HTTP \u8bf7\u6c42\u91cc\u5df2\u7ecf\u53d1\u8fc7\u4e86\uff09\u3002SSE \u521a\u597d\u6ee1\u8db3\u8fd9\u4e2a\u9700\u6c42\uff0cWebSocket \u7684\u53cc\u5411\u80fd\u529b\u5b8c\u5168\u7528\u4e0d\u4e0a\u3002<\/li>\n\n\n\n
        • HTTP \u539f\u751f<\/strong>\uff1aSSE \u5c31\u662f\u4e00\u4e2a\u666e\u901a\u7684 HTTP \u54cd\u5e94\uff0c\u53ea\u662f Content-Type \u53d8\u6210\u4e86 text\/event-stream<\/code>\uff0c\u6570\u636e\u683c\u5f0f\u662f\u6587\u672c\u6d41\u3002Nginx\u3001CDN\u3001\u8d1f\u8f7d\u5747\u8861\u5668\u3001API \u7f51\u5173\u2026\u2026\u6240\u6709 HTTP \u57fa\u7840\u8bbe\u65bd\u90fd\u80fd\u539f\u751f\u652f\u6301\uff0c\u4e0d\u9700\u8981\u989d\u5916\u914d\u7f6e\u3002WebSocket \u5219\u9700\u8981\u4e13\u95e8\u914d\u7f6e\u4ee3\u7406\u7684 WebSocket \u5347\u7ea7\u652f\u6301\uff08proxy_set_header Upgrade $http_upgrade<\/code> \u8fd9\u7c7b\u914d\u7f6e\uff09\uff0c\u5728\u67d0\u4e9b\u4f01\u4e1a\u7f51\u7edc\u73af\u5883\u4e0b\u53ef\u80fd\u88ab\u9632\u706b\u5899\u62e6\u622a\u3002<\/li>\n\n\n\n
        • \u81ea\u52a8\u91cd\u8fde<\/strong>\uff1aSSE \u89c4\u8303\u5185\u7f6e\u4e86\u91cd\u8fde\u673a\u5236\uff08Last-Event-ID<\/code> + retry:<\/code>\uff09\uff0c\u6d4f\u89c8\u5668\u7684 EventSource<\/code> API \u81ea\u52a8\u5904\u7406\u3002WebSocket \u65ad\u7ebf\u540e\u9700\u8981\u4f60\u81ea\u5df1\u5199\u91cd\u8fde\u903b\u8f91\u3002<\/li>\n\n\n\n
        • \u5b9e\u73b0\u7b80\u5355<\/strong>\uff1a\u670d\u52a1\u7aef\u53ea\u9700\u8981\u6309\u683c\u5f0f\u8f93\u51fa\u6587\u672c\u884c\uff0c\u5ba2\u6237\u7aef\u53ea\u9700\u8981\u9010\u884c\u89e3\u6790\u3002WebSocket \u6709\u81ea\u5df1\u7684\u5e27\u534f\u8bae\uff08Frame\uff09\uff0c\u9700\u8981\u5904\u7406\u5e27\u7684\u7f16\u7801\u89e3\u7801\u3001ping\/pong \u5fc3\u8df3\u3001\u5173\u95ed\u5e27\u7b49\uff0c\u5b9e\u73b0\u590d\u6742\u5ea6\u9ad8\u4e00\u4e2a\u91cf\u7ea7\u3002<\/li>\n<\/ul>\n\n\n\n
          \n
          \u4e00\u4e2a\u7b80\u5355\u7684\u5224\u65ad\u6807\u51c6\uff1a\u5982\u679c\u4f60\u7684\u573a\u666f\u662f\u670d\u52a1\u7aef\u5411\u5ba2\u6237\u7aef\u6301\u7eed\u63a8\u9001\u6570\u636e\uff0c\u4f18\u5148\u8003\u8651 SSE\u3002\u53ea\u6709\u5f53\u5ba2\u6237\u7aef\u4e5f\u9700\u8981\u5b9e\u65f6\u5411\u670d\u52a1\u7aef\u53d1\u9001\u6570\u636e\u65f6\uff08\u5728\u7ebf\u534f\u4f5c\u7f16\u8f91\u3001\u5b9e\u65f6\u6e38\u620f\u3001\u804a\u5929\u5ba4\u91cc\u7684\u201c\u5bf9\u65b9\u6b63\u5728\u8f93\u5165\u2026\u201d\uff09\uff0c\u624d\u9700\u8981 WebSocket\u3002<\/p>\n<\/blockquote>\n\n\n\n
          \u5927\u6a21\u578b\u6d41\u5f0f\u54cd\u5e94\u7684\u6570\u636e\u7ed3\u6784<\/h2>\n\n\n\n
          \u6a21\u578b\u8c03\u7528 API \u90a3\u7bc7\u91cc\u5df2\u7ecf\u5c55\u793a\u8fc7\u6d41\u5f0f\u54cd\u5e94\u7684\u57fa\u672c\u683c\u5f0f\u3002\u8fd9\u91cc\u66f4\u7cfb\u7edf\u5730\u68b3\u7406\u4e00\u904d\u5b8c\u6574\u7684\u6570\u636e\u7ed3\u6784\uff0c\u7279\u522b\u662f\u4e00\u4e9b\u4e4b\u524d\u6ca1\u5c55\u5f00\u8bb2\u7684\u7ec6\u8282\u3002<\/p>\n\n\n\n
          1. \u6d41\u5f0f vs \u975e\u6d41\u5f0f\u7684\u54cd\u5e94\u5bf9\u6bd4<\/h3>\n\n\n\n
          \u5148\u653e\u4e00\u5f20\u5bf9\u6bd4\u8868\uff0c\u6709\u4e2a\u5168\u5c40\u8ba4\u77e5\uff1a<\/p>\n\n\n\n
          2. \u6d41\u5f0f\u54cd\u5e94\u7684\u9010 chunk \u89e3\u6790<\/h3>\n\n\n\n
          \u7528\u4e00\u4e2a\u5b9e\u9645\u7684\u4f8b\u5b50\u6765\u8fc7\u4e00\u904d\u5b8c\u6574\u7684\u6d41\u5f0f\u54cd\u5e94\u3002\u5047\u8bbe\u4f60\u95ee\u6a21\u578b SSE \u662f\u4ec0\u4e48\uff1f\uff0c\u6a21\u578b\u56de\u7b54 SSE \u662f\u4e00\u79cd\u57fa\u4e8e HTTP \u7684\u670d\u52a1\u7aef\u63a8\u9001\u534f\u8bae\u3002<\/p>\n\n\n\n
          \u670d\u52a1\u7aef\u63a8\u9001\u8fc7\u6765\u7684 SSE \u6d41\u5b8c\u6574\u957f\u8fd9\u6837\uff1a<\/p>\n\n\n\n
          data: {\"id\":\"chatcmpl-abc\",\"choices\":[{\"index\":0,\"delta\":{\"role\":\"assistant\",\"content\":\"\"},\"finish_reason\":null}]}\n\ndata: {\"id\":\"chatcmpl-abc\",\"choices\":[{\"index\":0,\"delta\":{\"content\":\"SSE\"},\"finish_reason\":null}]}\n\ndata: {\"id\":\"chatcmpl-abc\",\"choices\":[{\"index\":0,\"delta\":{\"content\":\" \u662f\"},\"finish_reason\":null}]}\n\ndata: {\"id\":\"chatcmpl-abc\",\"choices\":[{\"index\":0,\"delta\":{\"content\":\"\u4e00\u79cd\"},\"finish_reason\":null}]}\n\ndata: {\"id\":\"chatcmpl-abc\",\"choices\":[{\"index\":0,\"delta\":{\"content\":\"\u57fa\u4e8e\"},\"finish_reason\":null}]}\n\ndata: {\"id\":\"chatcmpl-abc\",\"choices\":[{\"index\":0,\"delta\":{\"content\":\" HTTP \"},\"finish_reason\":null}]}\n\ndata: {\"id\":\"chatcmpl-abc\",\"choices\":[{\"index\":0,\"delta\":{\"content\":\"\u7684\"},\"finish_reason\":null}]}\n\ndata: {\"id\":\"chatcmpl-abc\",\"choices\":[{\"index\":0,\"delta\":{\"content\":\"\u670d\u52a1\u7aef\"},\"finish_reason\":null}]}\n\ndata: {\"id\":\"chatcmpl-abc\",\"choices\":[{\"index\":0,\"delta\":{\"content\":\"\u63a8\u9001\"},\"finish_reason\":null}]}\n\ndata: {\"id\":\"chatcmpl-abc\",\"choices\":[{\"index\":0,\"delta\":{\"content\":\"\u534f\u8bae\u3002\"},\"finish_reason\":null}]}\n\ndata: {\"id\":\"chatcmpl-abc\",\"choices\":[{\"index\":0,\"delta\":{},\"finish_reason\":\"stop\"}],\"usage\":{\"prompt_tokens\":15,\"completion_tokens\":12,\"total_tokens\":27}}\n\ndata: [DONE]<\/code><\/pre>\n\n\n\n
          \u9010 chunk \u62c6\u89e3\uff1a<\/p>\n\n\n\n
          \u5e8f\u53f7<\/th>delta<\/code> \u5185\u5bb9<\/th>finish_reason<\/code><\/th>\u8bf4\u660e<\/th><\/tr>
          1<\/td>{\"role\":\"assistant\",\"content\":\"\"}<\/code><\/td>null<\/td>\u5f00\u573a\u767d\uff1a\u6a21\u578b\u8bf4\"\u6211\u51c6\u5907\u5f00\u59cb\u8bf4\u8bdd\u4e86\"\uff0crole<\/code> \u53ea\u51fa\u73b0\u8fd9\u4e00\u6b21<\/td><\/tr>
          2<\/td>{\"content\":\"SSE\"}<\/code><\/td>null<\/td>\u5f00\u59cb\u8f93\u51fa\u5185\u5bb9<\/td><\/tr>
          3<\/td>{\"content\":\" \u662f\"}<\/code><\/td>null<\/td>\u7ee7\u7eed\u8f93\u51fa<\/td><\/tr>
          4~10<\/td>{\"content\":\"...\"}<\/code><\/td>null<\/td>\u9010\u5757\u8f93\u51fa\u5185\u5bb9<\/td><\/tr>
          11<\/td>{}<\/code><\/td>\"stop\"<\/td>delta<\/code> \u4e3a\u7a7a\uff0cfinish_reason<\/code> \u4e3a stop<\/code>\u2014\u2014\u8bf4\u8bdd\u7ed3\u675f<\/td><\/tr>
          -<\/td>[DONE]<\/code><\/td>-<\/td>SSE \u6d41\u7ed3\u675f\u6807\u8bb0\uff0c\u4e0d\u662f JSON<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
          \u5ba2\u6237\u7aef\u8981\u505a\u7684\u4e8b\u60c5\uff1a\u628a\u7b2c 1~10 \u4e2a chunk \u7684 delta.content<\/code> \u62fc\u63a5\u8d77\u6765\uff0c\u5c31\u662f\u5b8c\u6574\u7684\u56de\u7b54\u3002<\/p>\n\n\n\n
          \u6709\u51e0\u4e2a\u9700\u8981\u6ce8\u610f\u7684\u7ec6\u8282\uff1a<\/p>\n\n\n\n
            \n
          • \u7b2c\u4e00\u4e2a chunk \u7684 content<\/code> \u53ef\u80fd\u662f\u7a7a\u5b57\u7b26\u4e32<\/strong>\uff0c\u4e0d\u662f\u6240\u6709\u5e73\u53f0\u90fd\u8fd9\u6837\uff0c\u4f46\u4f60\u9700\u8981\u517c\u5bb9\u3002\u6709\u7684\u5e73\u53f0\u7b2c\u4e00\u4e2a chunk \u53ea\u6709 role<\/code>\uff0c\u6ca1\u6709 content<\/code> \u5b57\u6bb5\u3002<\/li>\n\n\n\n
          • \u4e2d\u95f4\u53ef\u80fd\u51fa\u73b0\u7a7a delta<\/code><\/strong>\uff1a\u6709\u7684 chunk \u7684 delta<\/code> \u662f\u7a7a\u5bf9\u8c61 {}<\/code>\uff0c\u65e2\u6ca1\u6709 content<\/code> \u4e5f\u6ca1\u6709 role<\/code>\u3002\u4e0d\u8981\u56e0\u4e3a\u62ff\u4e0d\u5230 content<\/code> \u5c31\u62a5\u9519\u3002<\/li>\n\n\n\n
          • finish_reason<\/code> \u53ea\u5728\u6700\u540e\u4e00\u4e2a chunk \u6709\u503c<\/strong>\uff0c\u4e4b\u524d\u7684 chunk \u90fd\u662f null<\/code>\u3002\u503c\u4e0d\u53ea\u662f \"stop\"<\/code>\uff08\u6b63\u5e38\u7ed3\u675f\uff09\uff0c\u8fd8\u53ef\u80fd\u662f \"length\"<\/code>\uff08\u8fbe\u5230 max_tokens \u4e0a\u9650\u88ab\u622a\u65ad\uff09\u3001\"content_filter\"<\/code>\uff08\u88ab\u5b89\u5168\u8fc7\u6ee4\u622a\u65ad\uff09\u3001\"tool_calls\"<\/code>\uff08\u6a21\u578b\u8f6c\u5165\u5de5\u5177\u8c03\u7528\u6d41\u7a0b\uff09\u3002\u4ee3\u7801\u91cc\u9700\u8981\u6839\u636e\u4e0d\u540c\u7684\u503c\u505a\u76f8\u5e94\u5904\u7406\u3002<\/li>\n\n\n\n
          • data: [DONE]<\/code> \u4e0d\u662f JSON<\/strong>\uff0c\u4e0d\u80fd\u7528 JSON \u89e3\u6790\u5668\u53bb\u89e3\u6790\uff0c\u8981\u5355\u72ec\u5224\u65ad\u3002<\/li>\n<\/ul>\n\n\n\n
            3. \u6d41\u5f0f\u6a21\u5f0f\u4e0b\u7684 Token \u7edf\u8ba1<\/h3>\n\n\n\n
            \u975e\u6d41\u5f0f\u54cd\u5e94\u91cc\uff0cusage<\/code> \u5b57\u6bb5\u76f4\u63a5\u5c31\u5728\u54cd\u5e94\u4f53\u91cc\uff1a<\/p>\n\n\n\n
            {\"choices\":[...],\"usage\":{\"prompt_tokens\":15,\"completion_tokens\":12,\"total_tokens\":27}}<\/code><\/pre>\n\n\n\n
            \u6d41\u5f0f\u6a21\u5f0f\u4e0b\u5c31\u9ebb\u70e6\u4e86\u3002\u4e0d\u540c\u5e73\u53f0\u7684\u5904\u7406\u65b9\u5f0f\u4e0d\u4e00\u6837\uff1a<\/p>\n\n\n\n
            \u65b9\u5f0f\u4e00\uff1a\u6700\u540e\u4e00\u4e2a chunk \u91cc\u9644\u5e26 usage<\/code><\/strong><\/p>\n\n\n\n
            \u90e8\u5206\u5e73\u53f0\uff08\u5305\u62ec SiliconFlow\uff09\u4f1a\u5728 finish_reason: \"stop\"<\/code> \u90a3\u4e2a chunk \u91cc\u9644\u5e26 usage<\/code> \u5b57\u6bb5\u3002\u524d\u9762\u7684\u793a\u4f8b\u91cc\u5df2\u7ecf\u5c55\u793a\u4e86\u8fd9\u79cd\u60c5\u51b5\u3002<\/p>\n\n\n\n
            \u65b9\u5f0f\u4e8c\uff1a\u9700\u8981\u989d\u5916\u53c2\u6570 stream_options<\/code><\/strong><\/p>\n\n\n\n
            OpenAI \u7684 API \u9700\u8981\u5728\u8bf7\u6c42\u4e2d\u663e\u5f0f\u52a0\u4e0a stream_options<\/code>\uff1a<\/p>\n\n\n\n
            {\"model\":\"gpt-4\",\"messages\":[...],\"stream\":true,\"stream_options\":{\"include_usage\":true}}<\/code><\/pre>\n\n\n\n
            \u52a0\u4e86\u8fd9\u4e2a\u53c2\u6570\u4e4b\u540e\uff0cOpenAI \u4f1a\u5728\u6d41\u7684\u6700\u540e\u989d\u5916\u53d1\u9001\u4e00\u4e2a\u53ea\u5305\u542b usage<\/code> \u7684 chunk\uff08choices<\/code> \u4e3a\u7a7a\u6570\u7ec4\uff09\u3002<\/p>\n\n\n\n
            \u65b9\u5f0f\u4e09\uff1a\u4e0d\u8fd4\u56de usage<\/code><\/strong><\/p>\n\n\n\n
            \u6709\u4e9b\u5e73\u53f0\u5728\u6d41\u5f0f\u6a21\u5f0f\u4e0b\u538b\u6839\u4e0d\u8fd4\u56de usage<\/code>\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0ccompletion_tokens<\/code> \u53ef\u4ee5\u5728\u5ba2\u6237\u7aef\u81ea\u5df1\u4f30\u7b97\uff08\u7edf\u8ba1\u6536\u5230\u7684\u6240\u6709 delta.content<\/code> \u62fc\u63a5\u540e\u7684\u5b57\u7b26\u6570\u6216 Token \u6570\uff09\uff0c\u4f46 prompt_tokens<\/code> \u53ea\u6709\u670d\u52a1\u7aef\u77e5\u9053\uff0c\u62ff\u4e0d\u5230\u5c31\u62ff\u4e0d\u5230\u3002<\/p>\n\n\n\n
            \n
            \u5b9e\u6d4b SiliconFlow \u5e73\u53f0\u7684\u884c\u4e3a\uff1a\u5728\u6700\u540e\u4e00\u4e2a chunk\uff08finish_reason: \"stop\"<\/code>\uff09\u4e2d\u4f1a\u8fd4\u56de usage<\/code> \u5b57\u6bb5\uff0c\u4e0d\u9700\u8981\u989d\u5916\u8bbe\u7f6e stream_options<\/code>\u3002\u5982\u679c\u4f60\u7528\u7684\u662f\u5176\u4ed6\u5e73\u53f0\uff0c\u5efa\u8bae\u5148\u6d4b\u4e00\u4e0b\u6d41\u5f0f\u54cd\u5e94\u91cc\u6709\u6ca1\u6709 usage<\/code>\uff0c\u6ca1\u6709\u7684\u8bdd\u770b\u6587\u6863\u662f\u5426\u652f\u6301 stream_options<\/code>\u3002<\/p>\n<\/blockquote>\n\n\n\n
            Java \u5b9e\u6218\uff1a\u5065\u58ee\u7684 SSE \u5ba2\u6237\u7aef<\/h2>\n\n\n\n
            \u4f5c\u4e3a\u5165\u95e8 demo \u5b8c\u5168\u6ca1\u95ee\u9898\uff0c\u4f46\u5728\u751f\u4ea7\u73af\u5883\u6709\u51e0\u4e2a\u9690\u60a3\uff1a<\/p>\n\n\n\n
              \n
            • \u6ca1\u6709\u8d85\u65f6\u63a7\u5236<\/strong>\u2014\u2014\u5982\u679c\u670d\u52a1\u7aef\u5361\u4f4f\u4e0d\u53d1\u6570\u636e\uff08\u6a21\u578b\u63a8\u7406\u5f02\u5e38\u3001\u7f51\u7edc\u62e5\u585e\uff09\uff0c\u5ba2\u6237\u7aef\u7684 readLine()<\/code> \u4f1a\u4e00\u76f4\u963b\u585e<\/li>\n\n\n\n
            • \u6ca1\u6709\u9519\u8bef\u5904\u7406<\/strong>\u2014\u2014\u8fde\u63a5\u4e2d\u65ad\u76f4\u63a5\u629b IOException<\/code>\uff0c\u8c03\u7528\u65b9\u62ff\u4e0d\u5230\u5df2\u7ecf\u63a5\u6536\u5230\u7684\u90e8\u5206\u5185\u5bb9<\/li>\n\n\n\n
            • \u6ca1\u6709\u56de\u8c03\u673a\u5236<\/strong>\u2014\u2014\u6240\u6709\u5185\u5bb9\u90fd\u662f System.out.print<\/code> \u76f4\u63a5\u6253\u5370\uff0c\u6ca1\u6cd5\u96c6\u6210\u5230\u4e1a\u52a1\u903b\u8f91\u91cc\uff08\u6bd4\u5982\u5b9e\u65f6\u63a8\u9001\u7ed9\u524d\u7aef\uff09<\/li>\n\n\n\n
            • \u6ca1\u6709 Token \u7edf\u8ba1<\/strong>\u2014\u2014\u6d41\u5f0f\u6a21\u5f0f\u4e0b usage<\/code> \u7684\u63d0\u53d6\u903b\u8f91\u7f3a\u5931<\/li>\n\n\n\n
            • \u8fb9\u754c\u60c5\u51b5\u6ca1\u5904\u7406<\/strong>\u2014\u2014\u7a7a delta<\/code>\u3001\u7f3a\u5931 content<\/code> \u5b57\u6bb5\u3001JSON \u89e3\u6790\u5931\u8d25\u90fd\u6ca1\u6709\u5bb9\u9519<\/li>\n<\/ul>\n\n\n\n
              \u63a5\u4e0b\u6765\u5c01\u88c5\u4e00\u4e2a\u76f8\u5bf9\u504f\u5411\u4e8e\u751f\u4ea7\u53ef\u7528\u7684 SSE \u6d41\u5f0f\u5ba2\u6237\u7aef\u3002<\/p>\n\n\n\n
              \n
              \u6ce8\u610f\uff1a\u4e0b\u9762\u7684\u4ee3\u7801\u5b9e\u73b0\u7684\u662f\u5927\u6a21\u578b\u6d41\u5f0f API \u5e38\u89c1\u7684 data-only SSE \u6d88\u8d39\u903b\u8f91\uff0c\u9488\u5bf9 OpenAI \u517c\u5bb9\u63a5\u53e3\u7684\u4e3b\u6d41\u573a\u666f\u505a\u4e86\u4f18\u5316\u3002\u5b83\u4e0d\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u901a\u7528 SSE \u534f\u8bae\u89e3\u6790\u5668\u2014\u2014\u6807\u51c6 SSE \u8fd8\u6709\u591a\u884c data:<\/code> \u62fc\u63a5\u3001\u672a\u5b8c\u6210\u4e8b\u4ef6\u4e0d\u6d3e\u53d1\u7b49\u89c4\u5219\uff0c\u5728\u5927\u6a21\u578b API \u7684\u573a\u666f\u4e0b\u7528\u4e0d\u5230\uff0c\u8fd9\u91cc\u4e0d\u505a\u5904\u7406\u3002<\/p>\n<\/blockquote>\n\n\n\n
              import com.google.gson.JsonArray;\nimport com.google.gson.JsonElement;\nimport com.google.gson.JsonObject;\nimport com.google.gson.JsonParser;\nimport okhttp3.*;\n\nimport java.io.BufferedReader;\nimport java.io.InputStreamReader;\nimport java.nio.charset.StandardCharsets;\nimport java.util.concurrent.TimeUnit;\n\npublic class SseStreamClient {\n\n    private static final String API_URL = \"https:\/\/api.siliconflow.cn\/v1\/chat\/completions\";\n    private static final String API_KEY = \"sk-xxx\"; \/\/ \u66ff\u6362\u4e3a\u4f60\u7684 API Key\n\n    \/\/ ========== \u56de\u8c03\u63a5\u53e3 ==========\n\n    \/**\n     * SSE \u6d41\u5f0f\u54cd\u5e94\u7684\u4e8b\u4ef6\u56de\u8c03\n     *\/\n    interface StreamCallback {\n        \/** \u6536\u5230\u4e00\u4e2a content \u589e\u91cf\uff08\u6bcf\u4e2a token \u8c03\u7528\u4e00\u6b21\uff09 *\/\n        void onToken(String token);\n\n        \/** \u6d41\u6b63\u5e38\u7ed3\u675f\uff0c\u8fd4\u56de\u5b8c\u6574\u5185\u5bb9\u548c Token \u7edf\u8ba1 *\/\n        void onComplete(String fullContent, Usage usage);\n\n        \/** \u53d1\u751f\u9519\u8bef\uff0cpartialContent \u662f\u9519\u8bef\u53d1\u751f\u524d\u5df2\u63a5\u6536\u5230\u7684\u5185\u5bb9 *\/\n        void onError(Exception e, String partialContent);\n    }\n\n    \/**\n     * Token \u7528\u91cf\u7edf\u8ba1\n     *\/\n    static class Usage {\n        int promptTokens;\n        int completionTokens;\n        int totalTokens;\n\n        @Override\n        public String toString() {\n            return String.format(\"prompt=%d, completion=%d, total=%d\",\n                    promptTokens, completionTokens, totalTokens);\n        }\n    }\n\n    \/\/ ========== \u6838\u5fc3\u65b9\u6cd5 ==========\n\n    \/**\n     * \u53d1\u8d77\u6d41\u5f0f\u8bf7\u6c42\n     *\n     * @param model       \u6a21\u578b ID\n     * @param systemPrompt System \u6d88\u606f\u5185\u5bb9\n     * @param userMessage  \u7528\u6237\u6d88\u606f\u5185\u5bb9\n     * @param callback     \u4e8b\u4ef6\u56de\u8c03\n     *\/\n    public static void streamChat(String model, String systemPrompt,\n                                  String userMessage, StreamCallback callback) {\n        \/\/ 1. \u6784\u5efa\u8bf7\u6c42\u4f53\n        JsonObject requestBody = new JsonObject();\n        requestBody.addProperty(\"model\", model);\n        requestBody.addProperty(\"temperature\", 0.7);\n        requestBody.addProperty(\"max_tokens\", 2048);\n        requestBody.addProperty(\"stream\", true);\n\n        JsonArray messages = new JsonArray();\n        if (systemPrompt != null && !systemPrompt.isEmpty()) {\n            JsonObject sysMsg = new JsonObject();\n            sysMsg.addProperty(\"role\", \"system\");\n            sysMsg.addProperty(\"content\", systemPrompt);\n            messages.add(sysMsg);\n        }\n        JsonObject userMsg = new JsonObject();\n        userMsg.addProperty(\"role\", \"user\");\n        userMsg.addProperty(\"content\", userMessage);\n        messages.add(userMsg);\n        requestBody.add(\"messages\", messages);\n\n        \/\/ 2. \u521b\u5efa HTTP \u5ba2\u6237\u7aef\n        \/\/ \u5173\u952e\uff1areadTimeout \u662f\"\u4e24\u4e2a\u6570\u636e\u5757\u4e4b\u95f4\u7684\u6700\u5927\u7b49\u5f85\u65f6\u95f4\"\uff0c\u4e0d\u662f\u6574\u4e2a\u54cd\u5e94\u7684\u8d85\u65f6\n        OkHttpClient client = new OkHttpClient.Builder()\n                .connectTimeout(15, TimeUnit.SECONDS)\n                .readTimeout(60, TimeUnit.SECONDS)   \/\/ \u6d41\u5f0f\u573a\u666f\u9700\u8981\u66f4\u957f\n                .writeTimeout(15, TimeUnit.SECONDS)\n                .build();\n\n        Request request = new Request.Builder()\n                .url(API_URL)\n                .addHeader(\"Authorization\", \"Bearer \" + API_KEY)\n                .addHeader(\"Content-Type\", \"application\/json\")\n                .addHeader(\"Accept\", \"text\/event-stream\")  \/\/ \u660e\u786e\u544a\u8bc9\u670d\u52a1\u7aef\u6211\u8981 SSE\n                .post(RequestBody.create(requestBody.toString(),\n                        MediaType.parse(\"application\/json\")))\n                .build();\n\n        \/\/ 3. \u53d1\u8d77\u8bf7\u6c42\u5e76\u89e3\u6790 SSE \u6d41\n        StringBuilder fullContent = new StringBuilder();\n        Usage usage = null;\n\n        try (Response response = client.newCall(request).execute()) {\n            \/\/ \u68c0\u67e5 HTTP \u72b6\u6001\u7801\n            if (!response.isSuccessful()) {\n                String errorBody = response.body() != null ? response.body().string() : \"\u65e0\u54cd\u5e94\u4f53\";\n                callback.onError(\n                        new RuntimeException(\"HTTP \" + response.code() + \": \" + errorBody),\n                        fullContent.toString()\n                );\n                return;\n            }\n\n            \/\/ \u9010\u884c\u8bfb\u53d6 SSE \u6d41\uff08\u663e\u5f0f\u6307\u5b9a UTF-8\uff0cSSE \u89c4\u8303\u8981\u6c42 UTF-8 \u7f16\u7801\uff09\n            BufferedReader reader = new BufferedReader(\n                    new InputStreamReader(response.body().byteStream(), StandardCharsets.UTF_8));\n            String line;\n            boolean streamDone = false;  \/\/ \u662f\u5426\u6536\u5230\u4e86 [DONE] \u6807\u8bb0\n\n            while ((line = reader.readLine()) != null) {\n                \/\/ \u8df3\u8fc7\u7a7a\u884c\uff08SSE \u4e8b\u4ef6\u5206\u9694\u7b26\uff09\n                if (line.isEmpty()) {\n                    continue;\n                }\n\n                \/\/ \u8df3\u8fc7\u6ce8\u91ca\u884c\uff08\u5fc3\u8df3\u4fdd\u6d3b\uff09\n                if (line.startsWith(\":\")) {\n                    continue;\n                }\n\n                \/\/ \u53ea\u5904\u7406 data: \u5f00\u5934\u7684\u884c\uff08\u517c\u5bb9 \"data: xxx\" \u548c \"data:xxx\" \u4e24\u79cd\u683c\u5f0f\uff09\n                if (!line.startsWith(\"data:\")) {\n                    continue;\n                }\n\n                \/\/ \u53bb\u6389 \"data:\" \u524d\u7f00\uff0cSSE \u6807\u51c6\u89c4\u5b9a\u5192\u53f7\u540e\u6700\u591a\u53bb\u6389\u4e00\u4e2a\u53ef\u9009\u7a7a\u683c\n                String data = line.substring(5);\n                if (data.startsWith(\" \")) {\n                    data = data.substring(1);\n                }\n\n                \/\/ \u68c0\u67e5\u6d41\u7ed3\u675f\u6807\u8bb0\n                if (\"[DONE]\".equals(data)) {\n                    streamDone = true;\n                    break;\n                }\n\n                \/\/ \u89e3\u6790 JSON\uff08\u52a0\u5bb9\u9519\uff09\n                JsonObject chunk;\n                try {\n                    chunk = JsonParser.parseString(data).getAsJsonObject();\n                } catch (Exception e) {\n                    \/\/ JSON \u89e3\u6790\u5931\u8d25\uff0c\u8df3\u8fc7\u8fd9\u4e2a chunk\uff0c\u4e0d\u8981\u4e2d\u65ad\u6574\u4e2a\u6d41\n                    System.err.println(\"JSON \u89e3\u6790\u5931\u8d25\uff0c\u8df3\u8fc7: \" + data);\n                    continue;\n                }\n\n                \/\/ \u63d0\u53d6 choices \u6570\u7ec4\n                JsonArray choices = chunk.getAsJsonArray(\"choices\");\n                if (choices == null || choices.isEmpty()) {\n                    \/\/ \u6709\u4e9b\u5e73\u53f0\u5728\u6700\u540e\u4e00\u4e2a chunk\uff08stream_options \u6a21\u5f0f\uff09choices \u4e3a\u7a7a\u6570\u7ec4\n                    \/\/ \u4f46\u53ef\u80fd\u6709 usage \u5b57\u6bb5\n                    usage = extractUsage(chunk, usage);\n                    continue;\n                }\n\n                JsonObject choice = choices.get(0).getAsJsonObject();\n\n                \/\/ \u63d0\u53d6 delta \u4e2d\u7684 content\n                JsonObject delta = choice.getAsJsonObject(\"delta\");\n                if (delta != null && delta.has(\"content\")) {\n                    JsonElement contentElement = delta.get(\"content\");\n                    if (!contentElement.isJsonNull()) {\n                        String token = contentElement.getAsString();\n                        if (!token.isEmpty()) {\n                            fullContent.append(token);\n                            callback.onToken(token);\n                        }\n                    }\n                }\n\n                \/\/ \u63d0\u53d6 finish_reason\n                JsonElement finishElement = choice.get(\"finish_reason\");\n                if (finishElement != null && !finishElement.isJsonNull()) {\n                    String finishReason = finishElement.getAsString();\n                    \/\/ finish_reason \u4e0d\u53ea\u662f \"stop\"\uff0c\u8fd8\u53ef\u80fd\u662f\uff1a\n                    \/\/ - \"length\"\uff1a\u8fbe\u5230 max_tokens \u4e0a\u9650\uff0c\u5185\u5bb9\u88ab\u622a\u65ad\n                    \/\/ - \"content_filter\"\uff1a\u88ab\u5b89\u5168\u8fc7\u6ee4\u622a\u65ad\n                    \/\/ - \"tool_calls\"\uff1a\u6a21\u578b\u8f6c\u5165\u5de5\u5177\u8c03\u7528\u6d41\u7a0b\n                    \/\/ \u8fd9\u91cc\u7edf\u4e00\u6807\u8bb0\u4e3a\u6d41\u7ed3\u675f\uff0c\u8c03\u7528\u65b9\u53ef\u6839\u636e finishReason \u505a\u66f4\u7ec6\u7684\u5904\u7406\n                    usage = extractUsage(chunk, usage);\n                }\n            }\n\n            \/\/ \u5224\u65ad\u6d41\u662f\u5426\u6b63\u5e38\u7ed3\u675f\n            if (streamDone) {\n                callback.onComplete(fullContent.toString(), usage);\n            } else {\n                \/\/ readLine() \u8fd4\u56de null \u4f46\u6ca1\u6536\u5230 [DONE]\u2014\u2014\u8fde\u63a5\u5f02\u5e38\u5173\u95ed\n                callback.onError(\n                        new RuntimeException(\"SSE \u6d41\u5f02\u5e38\u7ed3\u675f\uff1a\u672a\u6536\u5230 [DONE] \u6807\u8bb0\"),\n                        fullContent.toString()\n                );\n            }\n\n        } catch (Exception e) {\n            \/\/ \u8fde\u63a5\u5f02\u5e38\uff08\u8d85\u65f6\u3001\u7f51\u7edc\u4e2d\u65ad\u7b49\uff09\uff0c\u628a\u5df2\u63a5\u6536\u5230\u7684\u5185\u5bb9\u4f20\u7ed9\u8c03\u7528\u65b9\n            callback.onError(e, fullContent.toString());\n        }\n    }\n\n    \/**\n     * \u4ece chunk \u4e2d\u63d0\u53d6 usage \u4fe1\u606f\n     *\/\n    private static Usage extractUsage(JsonObject chunk, Usage existing) {\n        if (!chunk.has(\"usage\") || chunk.get(\"usage\").isJsonNull()) {\n            return existing;\n        }\n        JsonObject usageJson = chunk.getAsJsonObject(\"usage\");\n        Usage usage = new Usage();\n        usage.promptTokens = usageJson.has(\"prompt_tokens\")\n                ? usageJson.get(\"prompt_tokens\").getAsInt() : 0;\n        usage.completionTokens = usageJson.has(\"completion_tokens\")\n                ? usageJson.get(\"completion_tokens\").getAsInt() : 0;\n        usage.totalTokens = usageJson.has(\"total_tokens\")\n                ? usageJson.get(\"total_tokens\").getAsInt() : 0;\n        return usage;\n    }\n\n    \/\/ ========== \u8fd0\u884c\u793a\u4f8b ==========\n\n    public static void main(String[] args) {\n        System.out.println(\"=== SSE \u6d41\u5f0f\u8c03\u7528\u6f14\u793a ===\\n\");\n\n        streamChat(\n            \"Qwen\/Qwen3-32B\",\n            \"\u4f60\u662f\u4e00\u4e2a\u6280\u672f\u4e13\u5bb6\uff0c\u56de\u7b54\u7b80\u6d01\u6e05\u6670\u3002\",\n            \"\u7528\u4e24\u4e09\u53e5\u8bdd\u89e3\u91ca\u4e00\u4e0b\u4ec0\u4e48\u662f SSE \u534f\u8bae\uff1f\",\n            new StreamCallback() {\n                @Override\n                public void onToken(String token) {\n                    \/\/ \u6bcf\u6536\u5230\u4e00\u4e2a token \u5c31\u5b9e\u65f6\u8f93\u51fa\uff08\u4e0d\u6362\u884c\uff09\n                    System.out.print(token);\n                }\n\n                @Override\n                public void onComplete(String fullContent, Usage usage) {\n                    System.out.println(\"\\n\");\n                    System.out.println(\"--- \u6d41\u5f0f\u8f93\u51fa\u5b8c\u6bd5 ---\");\n                    System.out.println(\"\u5b8c\u6574\u5185\u5bb9\u957f\u5ea6\uff1a\" + fullContent.length() + \" \u5b57\u7b26\");\n                    if (usage != null) {\n                        System.out.println(\"Token \u7edf\u8ba1\uff1a\" + usage);\n                    } else {\n                        System.out.println(\"Token \u7edf\u8ba1\uff1a\u672a\u8fd4\u56de\");\n                    }\n                }\n\n                @Override\n                public void onError(Exception e, String partialContent) {\n                    System.err.println(\"\\n\\n--- \u53d1\u751f\u9519\u8bef ---\");\n                    System.err.println(\"\u9519\u8bef\u4fe1\u606f\uff1a\" + e.getMessage());\n                    if (!partialContent.isEmpty()) {\n                        System.err.println(\"\u5df2\u63a5\u6536\u5230\u7684\u5185\u5bb9\uff1a\" + partialContent);\n                    }\n                }\n            }\n        );\n    }\n}<\/code><\/pre>\n\n\n\n
              \u8fd0\u884c\u8f93\u51fa\uff1a<\/p>\n\n\n\n
              === SSE \u6d41\u5f0f\u8c03\u7528\u6f14\u793a ===\n\nSSE\uff08Server-Sent Events\uff09\u662f\u57fa\u4e8e HTTP \u7684**\u670d\u52a1\u5668\u5411\u5ba2\u6237\u7aef\u5355\u5411\u5b9e\u65f6\u901a\u4fe1\u534f\u8bae**\uff0c\u901a\u8fc7\u6301\u4e45\u8fde\u63a5\u6301\u7eed\u53d1\u9001\u6587\u672c\u4e8b\u4ef6\u6d41\uff08\u5982 `data: message\\n\\n`\uff09\u3002  \n\u4e0d\u540c\u4e8e WebSocket\uff0cSSE**\u65e0\u9700\u5ba2\u6237\u7aef\u4e3b\u52a8\u53d1\u9001\u6d88\u606f**\uff0c\u9002\u7528\u4e8e\u5982\u5b9e\u65f6\u901a\u77e5\u3001\u80a1\u7968\u62a5\u4ef7\u7b49\u9700\u670d\u52a1\u5668\u4e3b\u52a8\u63a8\u9001\u7684\u573a\u666f\u3002  \n\u5176\u4f18\u52bf\u5305\u62ec**\u81ea\u52a8\u91cd\u8fde\u3001\u517c\u5bb9\u6027\u597d\uff08HTML5 \u539f\u751f\u652f\u6301\uff09**\uff0c\u4f46\u4ec5\u652f\u6301\u5355\u5411\u4f20\u8f93\uff08\u670d\u52a1\u5668\u2192\u5ba2\u6237\u7aef\uff09\u3002\n\n--- \u6d41\u5f0f\u8f93\u51fa\u5b8c\u6bd5 ---\n\u5b8c\u6574\u5185\u5bb9\u957f\u5ea6\uff1a208 \u5b57\u7b26\nToken \u7edf\u8ba1\uff1aprompt=33, completion=503, total=536<\/code><\/pre>\n\n\n\n
              \u4ee3\u7801\u7684\u51e0\u4e2a\u5173\u952e\u8bbe\u8ba1\u70b9\uff1a<\/p>\n\n\n\n
                \n
              • \u56de\u8c03\u63a5\u53e3<\/strong>\uff1aStreamCallback<\/code> \u5b9a\u4e49\u4e86\u4e09\u4e2a\u56de\u8c03\u65b9\u6cd5\u2014\u2014onToken<\/code>\uff08\u6bcf\u4e2a\u589e\u91cf token\uff09\u3001onComplete<\/code>\uff08\u6d41\u6b63\u5e38\u7ed3\u675f\uff09\u3001onError<\/code>\uff08\u51fa\u9519\uff09\u3002\u8c03\u7528\u65b9\u5b9e\u73b0\u8fd9\u4e2a\u63a5\u53e3\u5c31\u80fd\u628a\u6d41\u5f0f\u5185\u5bb9\u96c6\u6210\u5230\u81ea\u5df1\u7684\u4e1a\u52a1\u903b\u8f91\u91cc\uff0c\u6bd4\u5982\u5b9e\u65f6\u63a8\u9001\u7ed9\u524d\u7aef\uff08\u4e0b\u4e00\u7bc7\u4f1a\u8bb2\uff09\u3001\u5199\u5165\u65e5\u5fd7\u3001\u6216\u8005\u663e\u793a\u8fdb\u5ea6\u3002<\/li>\n\n\n\n
              • \u9519\u8bef\u65f6\u4e0d\u4e22\u5185\u5bb9<\/strong>\uff1aonError<\/code> \u65b9\u6cd5\u5e26\u4e86\u4e00\u4e2a partialContent<\/code> \u53c2\u6570\u3002\u5982\u679c\u6d41\u4f20\u8f93\u5230\u4e00\u534a\u8fde\u63a5\u65ad\u4e86\uff0c\u8c03\u7528\u65b9\u81f3\u5c11\u80fd\u62ff\u5230\u5df2\u7ecf\u6536\u5230\u7684\u90e8\u5206\u5185\u5bb9\uff0c\u800c\u4e0d\u662f\u4ec0\u4e48\u90fd\u6ca1\u6709\u3002<\/li>\n\n\n\n
              • JSON \u89e3\u6790\u5bb9\u9519<\/strong>\uff1a\u89e3\u6790\u5931\u8d25\u4e0d\u4e2d\u65ad\u6574\u4e2a\u6d41\u2014\u2014\u8df3\u8fc7\u8fd9\u4e2a\u6709\u95ee\u9898\u7684 chunk\uff0c\u7ee7\u7eed\u5904\u7406\u540e\u9762\u7684\u3002\u5728\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u5076\u5c14\u4f1a\u9047\u5230\u683c\u5f0f\u4e0d\u89c4\u8303\u7684 chunk\uff08\u670d\u52a1\u7aef bug \u6216\u7f51\u7edc\u4f20\u8f93\u95ee\u9898\uff09\uff0c\u76f4\u63a5\u5d29\u6389\u662f\u4e0d\u5408\u9002\u7684\u3002<\/li>\n\n\n\n
              • Usage \u63d0\u53d6\u517c\u5bb9<\/strong>\uff1a\u5148\u5c1d\u8bd5\u4ece finish_reason: stop<\/code> \u7684 chunk \u91cc\u63d0\u53d6 usage<\/code>\uff0c\u4e5f\u517c\u5bb9 choices<\/code> \u4e3a\u7a7a\u6570\u7ec4\u4f46\u6709 usage<\/code> \u5b57\u6bb5\u7684\u60c5\u51b5\uff08OpenAI stream_options<\/code> \u6a21\u5f0f\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
                3. \u5e38\u89c1\u5751\u4e0e\u5904\u7406<\/h3>\n\n\n\n
                3.1 \u6d41\u5f0f\u8d85\u65f6\u600e\u4e48\u8bbe<\/h4>\n\n\n\n
                OkHttp \u7684 readTimeout<\/code> \u5728\u975e\u6d41\u5f0f\u548c\u6d41\u5f0f\u573a\u666f\u4e0b\u542b\u4e49\u4e0d\u540c\uff1a<\/p>\n\n\n\n
                  \n
                • \u975e\u6d41\u5f0f<\/strong>\uff1areadTimeout<\/code> \u662f\u4ece\u53d1\u51fa\u8bf7\u6c42\u5230\u6536\u5230\u5b8c\u6574\u54cd\u5e94\u7684\u6700\u5927\u7b49\u5f85\u65f6\u95f4\u3002\u8bbe 30 \u79d2\u610f\u5473\u7740\u5982\u679c 30 \u79d2\u5185\u62ff\u4e0d\u5230\u5b8c\u6574\u56de\u7b54\uff0c\u5c31\u8d85\u65f6\u3002<\/li>\n\n\n\n
                • \u6d41\u5f0f<\/strong>\uff1areadTimeout<\/code> \u662f\u4e24\u6b21\u6570\u636e\u8bfb\u53d6\u4e4b\u95f4\u7684\u6700\u5927\u7b49\u5f85\u65f6\u95f4\u3002\u8bbe 30 \u79d2\u610f\u5473\u7740\u5982\u679c 30 \u79d2\u5185\u6ca1\u6709\u6536\u5230\u4efb\u4f55\u65b0\u7684 chunk\uff0c\u5c31\u8d85\u65f6\u3002<\/li>\n<\/ul>\n\n\n\n
                  \u8fd9\u4e2a\u533a\u522b\u5f88\u91cd\u8981\u3002\u6d41\u5f0f\u573a\u666f\u4e0b\uff0c\u6574\u4e2a\u54cd\u5e94\u53ef\u80fd\u6301\u7eed\u51e0\u5341\u79d2\u751a\u81f3\u51e0\u5206\u949f\uff08\u957f\u6587\u672c\u751f\u6210\uff09\uff0c\u4f46\u53ea\u8981\u4e24\u4e2a chunk \u4e4b\u95f4\u7684\u95f4\u9694\u4e0d\u8d85\u8fc7 readTimeout<\/code>\uff0c\u5c31\u4e0d\u4f1a\u8d85\u65f6\u3002<\/p>\n\n\n\n
                  \u90a3\u8bbe\u591a\u5c11\u5408\u9002\uff1f<\/p>\n\n\n\n
                    \n
                  • \u8bbe\u592a\u77ed<\/strong>\uff08\u6bd4\u5982 5 \u79d2\uff09\uff1a\u6a21\u578b\u5728\u601d\u8003\u6bd4\u8f83\u590d\u6742\u7684\u95ee\u9898\u65f6\uff0c\u4e24\u4e2a token \u4e4b\u95f4\u7684\u95f4\u9694\u53ef\u80fd\u8d85\u8fc7 5 \u79d2\uff08\u7279\u522b\u662f\u7528\u4e86\u6df1\u5ea6\u601d\u8003\u6a21\u5f0f\u7684\u6a21\u578b\uff09\uff0c\u4f1a\u8bef\u5224\u4e3a\u8d85\u65f6\u3002<\/li>\n\n\n\n
                  • \u8bbe\u592a\u957f<\/strong>\uff08\u6bd4\u5982 300 \u79d2\uff09\uff1a\u5982\u679c\u670d\u52a1\u7aef\u771f\u7684\u5361\u6b7b\u4e86\uff0c\u4f60\u8981\u7b49 5 \u5206\u949f\u624d\u80fd\u53d1\u73b0\u3002<\/li>\n<\/ul>\n\n\n\n
                    \u5efa\u8bae\u503c\uff1a30~60 \u79d2<\/strong>\u3002\u5bf9\u4e8e\u5927\u90e8\u5206\u5927\u6a21\u578b API\uff0c\u4e24\u4e2a chunk \u4e4b\u95f4\u7684\u95f4\u9694\u901a\u5e38\u5728\u6beb\u79d2\u5230\u51e0\u79d2\u4e4b\u95f4\u300230 \u79d2\u7684\u5bb9\u5fcd\u5ea6\u8db3\u591f\u8986\u76d6\u6a21\u578b\u601d\u8003\u7684\u573a\u666f\uff0c\u53c8\u4e0d\u81f3\u4e8e\u8ba9\u771f\u6b63\u7684\u6545\u969c\u7b49\u592a\u4e45\u3002<\/p>\n\n\n\n
                    \n
                    connectTimeout<\/code> \u548c writeTimeout<\/code> \u4e0d\u53d7\u6d41\u5f0f\u5f71\u54cd\uff0c\u6b63\u5e38\u8bbe\u7f6e\u5373\u53ef\uff0810~15 \u79d2\uff09\u3002<\/p>\n<\/blockquote>\n\n\n\n
                    3.2 \u7a7a delta \u548c\u7f3a\u5931\u5b57\u6bb5<\/h4>\n\n\n\n
                    \u4e0d\u540c\u5e73\u53f0\u3001\u4e0d\u540c\u6a21\u578b\u8fd4\u56de\u7684 delta<\/code> \u7ed3\u6784\u4e0d\u5b8c\u5168\u4e00\u81f4\u3002\u4f60\u53ef\u80fd\u9047\u5230\u8fd9\u4e9b\u60c5\u51b5\uff1a<\/p>\n\n\n\n
                    \/\/ \u60c5\u51b5 1\uff1adelta \u6709 role \u4f46\u6ca1\u6709 content{\"delta\":{\"role\":\"assistant\"}}\/\/ \u60c5\u51b5 2\uff1adelta \u6709 content \u4f46\u662f\u7a7a\u5b57\u7b26\u4e32{\"delta\":{\"content\":\"\"}}\/\/ \u60c5\u51b5 3\uff1adelta \u662f\u7a7a\u5bf9\u8c61{\"delta\":{}}\/\/ \u60c5\u51b5 4\uff1adelta \u7684 content \u662f null{\"delta\":{\"content\":null}}<\/code><\/pre>\n\n\n\n
                    \u524d\u9762\u7684\u4ee3\u7801\u91cc\u5df2\u7ecf\u505a\u4e86\u5904\u7406\u2014\u2014\u68c0\u67e5 delta<\/code> \u662f\u5426\u4e3a null\u3001\u662f\u5426\u6709 content<\/code> \u5b57\u6bb5\u3001content<\/code> \u662f\u5426\u4e3a null \u6216\u7a7a\u5b57\u7b26\u4e32\u3002\u8fd9\u4e9b\u68c0\u67e5\u770b\u7740\u5570\u55e6\uff0c\u4f46\u5c11\u4e00\u4e2a\u5c31\u53ef\u80fd\u5728\u67d0\u4e2a\u5e73\u53f0\u4e0a\u7ffb\u8f66\u3002<\/p>\n\n\n\n
                    3.3 \u7c98\u5305\u95ee\u9898<\/h4>\n\n\n\n
                    SSE \u7684\u6570\u636e\u662f\u901a\u8fc7 HTTP \u7684 chunked transfer encoding \u4f20\u8f93\u7684\u3002\u5728\u7f51\u7edc\u5c42\u9762\uff0c\u4e00\u6b21 TCP \u4f20\u8f93\u53ef\u80fd\u5305\u542b\u591a\u4e2a data:<\/code> \u884c\uff0c\u4e5f\u53ef\u80fd\u4e00\u4e2a data:<\/code> \u884c\u88ab\u622a\u65ad\u6210\u4e24\u6b21\u4f20\u8f93\u3002<\/p>\n\n\n\n
                    \u5982\u679c\u4f60\u7528 BufferedReader.readLine()<\/code> \u6765\u8bfb\u53d6\uff0c\u4e0d\u7528\u62c5\u5fc3\u8fd9\u4e2a\u95ee\u9898\u2014\u2014readLine()<\/code> \u4f1a\u5e2e\u4f60\u6309\u6362\u884c\u7b26\u5206\u5272\uff0c\u4fdd\u8bc1\u6bcf\u6b21\u8fd4\u56de\u4e00\u4e2a\u5b8c\u6574\u7684\u884c\u3002<\/p>\n\n\n\n
                    \u4f46\u5982\u679c\u4f60\u7528\u539f\u59cb\u7684 InputStream.read(byte[])<\/code> \u6765\u8bfb\u53d6\uff08\u6bd4\u5982\u4e3a\u4e86\u66f4\u9ad8\u7684\u6027\u80fd\uff09\uff0c\u5c31\u9700\u8981\u81ea\u5df1\u5904\u7406\u884c\u8fb9\u754c\u3002\u5bf9\u4e8e\u5927\u90e8\u5206\u573a\u666f\uff0cBufferedReader<\/code> \u7684\u6027\u80fd\u5b8c\u5168\u591f\u7528\uff0c\u6ca1\u5fc5\u8981\u7528\u539f\u59cb InputStream \u53bb\u627e\u9ebb\u70e6\u3002<\/p>\n\n\n\n
                    3.4 \u8fde\u63a5\u4e2d\u65ad\u7684\u5904\u7406<\/h4>\n\n\n\n
                    \u7f51\u7edc\u4e0d\u7a33\u5b9a\u65f6\uff0cSSE \u8fde\u63a5\u53ef\u80fd\u4e2d\u9014\u65ad\u5f00\u3002\u8868\u73b0\u4e3a readLine()<\/code> \u629b\u51fa IOException<\/code>\uff08\u901a\u5e38\u662f SocketTimeoutException<\/code> \u6216 SocketException<\/code>\uff09\u3002<\/p>\n\n\n\n
                    \u5bf9\u4e8e\u5927\u6a21\u578b API \u7684\u573a\u666f\uff0c\u65ad\u4e86\u901a\u5e38\u4e0d\u80fd\u4ece\u65ad\u70b9\u7eed\u4f20<\/strong>\u2014\u2014\u56e0\u4e3a LLM \u7684\u751f\u6210\u662f\u6709\u72b6\u6001\u7684\uff0c\u5185\u90e8\u7684\u6ce8\u610f\u529b\u7f13\u5b58\uff08KV Cache\uff09\u5728\u670d\u52a1\u7aef\uff0c\u8fde\u63a5\u65ad\u4e86\u8fd9\u4e9b\u72b6\u6001\u5c31\u4e22\u4e86\u3002\u8981\u7ee7\u7eed\u7684\u8bdd\u53ea\u80fd\u91cd\u65b0\u53d1\u8bf7\u6c42\u3002<\/p>\n\n\n\n
                    \u4ee3\u7801\u91cc\u7684\u5904\u7406\u7b56\u7565\uff1a<\/p>\n\n\n\n
                      \n
                    1. 1.\u5728 catch<\/code> \u5757\u91cc\u8c03\u7528 onError<\/code>\uff0c\u628a\u5df2\u63a5\u6536\u5230\u7684\u90e8\u5206\u5185\u5bb9\u4f20\u7ed9\u8c03\u7528\u65b9<\/li>\n\n\n\n
                    2. 2.\u8c03\u7528\u65b9\u6839\u636e\u4e1a\u52a1\u9700\u6c42\u51b3\u5b9a\u662f\u5426\u91cd\u8bd5\u2014\u2014\u5982\u679c\u5df2\u7ecf\u6536\u5230\u4e86\u5927\u90e8\u5206\u5185\u5bb9\uff0c\u53ef\u80fd\u5c55\u793a\u90e8\u5206\u7ed3\u679c\u6bd4\u91cd\u8bd5\u66f4\u597d<\/li>\n\n\n\n
                    3. 3.\u5982\u679c\u51b3\u5b9a\u91cd\u8bd5\uff0c\u628a\u4e4b\u524d\u7684\u95ee\u9898\u91cd\u65b0\u53d1\u4e00\u6b21\uff08\u4e0d\u662f\u7eed\u4f20\uff0c\u662f\u5168\u65b0\u7684\u8bf7\u6c42\uff09<\/li>\n<\/ol>\n\n\n\n
                      \/\/ \u8c03\u7528\u65b9\u7684\u91cd\u8bd5\u903b\u8f91\u793a\u4f8b\npublic void chatWithRetry(String question, int maxRetries) {\n    for (int i = 0; i <= maxRetries; i++) {\n        final int attempt = i;\n        final boolean[] success = {false};\n\n        SseStreamClient.streamChat(\"Qwen\/Qwen3-32B\", null, question,\n            new SseStreamClient.StreamCallback() {\n                @Override\n                public void onToken(String token) {\n                    System.out.print(token);\n                }\n\n                @Override\n                public void onComplete(String fullContent, SseStreamClient.Usage usage) {\n                    success[0] = true;\n                }\n\n                @Override\n                public void onError(Exception e, String partialContent) {\n                    System.err.printf(\"\u7b2c %d \u6b21\u8bf7\u6c42\u5931\u8d25: %s%n\", attempt + 1, e.getMessage());\n                    if (!partialContent.isEmpty()) {\n                        System.err.println(\"\u5df2\u63a5\u6536: \" + partialContent.length() + \" \u5b57\u7b26\");\n                    }\n                }\n            }\n        );\n\n        if (success[0]) break;\n        if (i < maxRetries) {\n            System.err.println(\"\u7b49\u5f85 2 \u79d2\u540e\u91cd\u8bd5...\");\n            try { Thread.sleep(2000); } catch (InterruptedException ignored) {}\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
                      \n
                      \u91cd\u8bd5\u8981\u6ce8\u610f\u5e42\u7b49\u6027\u2014\u2014\u5927\u6a21\u578b Chat API \u7684\u8bf7\u6c42\u5929\u7136\u662f\u5e42\u7b49\u7684\uff08\u540c\u6837\u7684\u8f93\u5165\u4e0d\u4e00\u5b9a\u5f97\u5230\u540c\u6837\u7684\u8f93\u51fa\uff0c\u4f46\u4e0d\u4f1a\u4ea7\u751f\u526f\u4f5c\u7528\uff09\uff0c\u53ef\u4ee5\u653e\u5fc3\u91cd\u8bd5\u3002\u4f46\u5982\u679c\u4f60\u7684\u8bf7\u6c42\u91cc\u5305\u542b\u4e86 Function Call \u8c03\u7528\u5916\u90e8\u7cfb\u7edf\u7684\u64cd\u4f5c\uff0c\u91cd\u8bd5\u5c31\u8981\u5c0f\u5fc3\u4e86\u3002<\/p>\n<\/blockquote>\n\n\n\n
                      SpringBoot-SSE\u670d\u52a1\u7aef\u5b9e\u6218<\/h1>\n\n\n\n
                      \u4e3a\u4ec0\u4e48\u9700\u8981\u540e\u7aef\u4e2d\u95f4\u5c42<\/h2>\n\n\n\n
                      1. \u524d\u7aef\u76f4\u8fde\u5927\u6a21\u578b API \u7684\u4e09\u4e2a\u95ee\u9898<\/h3>\n\n\n\n
                      \u4f60\u53ef\u80fd\u4f1a\u60f3\uff1a\u524d\u7aef\u76f4\u63a5\u8c03\u5927\u6a21\u578b API \u4e0d\u5c31\u884c\u4e86\uff1f\u4f55\u5fc5\u591a\u4e00\u5c42\u540e\u7aef\u4e2d\u95f4\u5c42\uff1f<\/p>\n\n\n\n
                      \u4e0d\u884c\u3002\u6709\u4e09\u4e2a\u786c\u4f24\uff1a<\/p>\n\n\n\n
                        \n
                      • API Key \u66b4\u9732<\/strong>\uff1a\u524d\u7aef\u4ee3\u7801\u8dd1\u5728\u7528\u6237\u7684\u6d4f\u89c8\u5668\u91cc\uff0c\u4f60\u7684 JavaScript \u4ee3\u7801\u3001\u7f51\u7edc\u8bf7\u6c42\u5bf9\u7528\u6237\u662f\u5b8c\u5168\u900f\u660e\u7684\u3002\u6253\u5f00 F12 \u2192 Network \u9762\u677f\uff0c\u8bf7\u6c42\u5934\u91cc\u7684 Authorization: Bearer sk-xxx<\/code> \u4e00\u76ee\u4e86\u7136\u3002API Key \u6cc4\u9732\u610f\u5473\u7740\u4efb\u4f55\u4eba\u90fd\u80fd\u7528\u4f60\u7684\u989d\u5ea6\u8c03\u7528\u5927\u6a21\u578b\uff0c\u8d26\u5355\u76f4\u63a5\u7206\u70b8\u3002<\/li>\n\n\n\n
                      • \u8de8\u57df\u9650\u5236<\/strong>\uff1a\u5927\u6a21\u578b API \u7684\u57df\u540d\uff08\u6bd4\u5982 api.siliconflow.cn<\/code>\uff09\u548c\u4f60\u7684\u524d\u7aef\u57df\u540d\uff08\u6bd4\u5982 www.yourapp.com<\/code>\uff09\u4e0d\u540c\uff0c\u6d4f\u89c8\u5668\u7684\u540c\u6e90\u7b56\u7565\u4f1a\u62e6\u622a\u8bf7\u6c42\u3002\u867d\u7136\u53ef\u4ee5\u901a\u8fc7 CORS \u89e3\u51b3\uff0c\u4f46 CORS \u7684\u54cd\u5e94\u5934\u9700\u8981\u670d\u52a1\u7aef<\/strong>\u914d\u7f6e\u2014\u2014\u4f60\u63a7\u5236\u4e0d\u4e86\u7b2c\u4e09\u65b9\u5927\u6a21\u578b API \u7684 CORS \u7b56\u7565\u3002<\/li>\n\n\n\n
                      • \u65e0\u6cd5\u52a0\u4e1a\u52a1\u903b\u8f91<\/strong>\uff1a\u7528\u6237\u662f\u5426\u767b\u5f55\u4e86\uff1f\u662f\u5426\u6709\u8c03\u7528\u6743\u9650\uff1f\u5355\u4e2a\u7528\u6237\u6bcf\u5206\u949f\u6700\u591a\u8c03\u51e0\u6b21\uff1f\u5bf9\u8bdd\u8bb0\u5f55\u8981\u4e0d\u8981\u5b58\uff1f\u654f\u611f\u8bcd\u8981\u4e0d\u8981\u8fc7\u6ee4\uff1f\u8fd9\u4e9b\u4e1a\u52a1\u903b\u8f91\u90fd\u9700\u8981\u5728\u540e\u7aef\u5904\u7406\u3002\u524d\u7aef\u76f4\u8fde\u7b49\u4e8e\u8df3\u8fc7\u4e86\u6574\u4e2a\u4e1a\u52a1\u5c42\uff0c\u4f60\u7684\u7cfb\u7edf\u5c31\u662f\u4e00\u4e2a\u6ca1\u6709\u95e8\u7981\u7684\u5927\u697c\u3002<\/li>\n<\/ul>\n\n\n\n
                        \u6240\u4ee5\u67b6\u6784\u5fc5\u987b\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n
                        \u524d\u7aef\u6d4f\u89c8\u5668 \u2192 \u4f60\u7684 SpringBoot \u540e\u7aef \u2192 \u5927\u6a21\u578b API<\/code><\/pre>\n\n\n\n
                        \u540e\u7aef\u8d1f\u8d23\u9274\u6743\u3001\u9650\u6d41\u3001\u65e5\u5fd7\u3001\u5bf9\u8bdd\u5386\u53f2\u5b58\u50a8\uff0c\u7136\u540e\u4ee3\u7406\u8c03\u7528\u5927\u6a21\u578b API\uff0c\u628a\u6d41\u5f0f\u54cd\u5e94\u8f6c\u53d1\u7ed9\u524d\u7aef\u3002 Controller \u7ebf\u7a0b\u4e0d\u4f1a\u88ab\u957f\u65f6\u95f4\u5360\u7528<\/strong>\u3002Controller \u65b9\u6cd5\u521b\u5efa SseEmitter<\/code> \u5bf9\u8c61\u540e\u7acb\u5373\u8fd4\u56de\uff0c\u7ebf\u7a0b\u5c31\u91ca\u653e\u4e86\u3002\u771f\u6b63\u7684\u6570\u636e\u63a8\u9001\u662f\u5728\u53e6\u4e00\u4e2a\u5f02\u6b65\u7ebf\u7a0b\u91cc\u8fdb\u884c\u7684\u3002\u8fd9\u610f\u5473\u7740\u5373\u4f7f\u6d41\u5f0f\u751f\u6210\u9700\u8981 30 \u79d2\uff0cTomcat \u7684 Controller \u7ebf\u7a0b\u4e5f\u53ea\u5360\u7528\u4e86\u51e0\u6beb\u79d2\u3002<\/p>\n\n\n\n
                        Spring Boot SseEmitter \u6838\u5fc3\u673a\u5236<\/h2>\n\n\n\n
                        1. SseEmitter \u662f\u4ec0\u4e48<\/h3>\n\n\n\n
                        SseEmitter<\/code> \u662f Spring MVC \u63d0\u4f9b\u7684\u5f02\u6b65\u54cd\u5e94\u5de5\u5177\uff0c\u4e13\u95e8\u7528\u4e8e SSE \u670d\u52a1\u7aef\u63a8\u9001\u3002<\/p>\n\n\n\n
                        \u666e\u901a\u7684 Controller \u8fd4\u56de\u503c\uff08\u6bd4\u5982 ResponseEntity<\/code>\u3001String<\/code>\u3001Map<\/code>\uff09\u662f\u540c\u6b65\u54cd\u5e94<\/strong>\u2014\u2014\u65b9\u6cd5\u6267\u884c\u5b8c\uff0c\u54cd\u5e94\u5c31\u53d1\u4e86\uff0cHTTP \u8fde\u63a5\u5c31\u5173\u4e86\u3002\u4e00\u95ee\u4e00\u7b54\uff0c\u5e72\u8106\u5229\u843d\u3002<\/p>\n\n\n\n
                        SseEmitter<\/code> \u662f\u5f02\u6b65\u54cd\u5e94<\/strong>\u2014\u2014Controller \u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a SseEmitter<\/code> \u5bf9\u8c61\u540e\uff0cHTTP \u8fde\u63a5\u4e0d\u4f1a\u5173\u95ed<\/strong>\u3002\u4f60\u53ef\u4ee5\u5728\u5176\u4ed6\u7ebf\u7a0b\u91cc\u901a\u8fc7\u8fd9\u4e2a SseEmitter<\/code> \u5bf9\u8c61\u6301\u7eed\u5411\u5ba2\u6237\u7aef\u63a8\u9001\u4e8b\u4ef6\uff0c\u76f4\u5230\u4f60\u8c03\u7528 emitter.complete()<\/code> \u4e3b\u52a8\u5173\u95ed\u8fde\u63a5\u3002<\/p>\n\n\n\n
                        \u6253\u4e2a\u6bd4\u65b9\uff1a\u666e\u901a Controller \u50cf\u81ea\u52a8\u552e\u8d27\u673a\u2014\u2014\u6295\u5e01\u3001\u51fa\u8d27\u3001\u8d70\u4eba\u3002SseEmitter<\/code> \u50cf\u5916\u5356\u5e73\u53f0\u2014\u2014\u4f60\u4e0b\u4e86\u5355\uff08\u53d1\u4e86\u8bf7\u6c42\uff09\uff0c\u7136\u540e\u9a91\u624b\u6301\u7eed\u7ed9\u4f60\u63a8\u9001\u72b6\u6001\u66f4\u65b0\uff08\u5df2\u63a5\u5355\u3001\u6b63\u5728\u914d\u9001\u3001\u5373\u5c06\u5230\u8fbe\uff09\uff0c\u76f4\u5230\u9001\u8fbe\uff08complete()<\/code>\uff09\u3002<\/p>\n\n\n\n
                        2. SseEmitter \u7684\u6838\u5fc3 API<\/h3>\n\n\n\n
                        SseEmitter<\/code> \u7684 API \u4e0d\u591a\uff0c\u6838\u5fc3\u5c31\u8fd9\u51e0\u4e2a\uff1a<\/p>\n\n\n\n
                        API<\/th>\u4f5c\u7528<\/th>\u8bf4\u660e<\/th><\/tr>
                        new SseEmitter(timeout)<\/code><\/td>\u521b\u5efa\u5b9e\u4f8b\uff0c\u8bbe\u7f6e\u8d85\u65f6<\/td>\u8d85\u65f6\u5355\u4f4d\u6beb\u79d2\uff0c\u8d85\u65f6\u540e\u81ea\u52a8\u5173\u95ed\u8fde\u63a5<\/td><\/tr>
                        send(Object data)<\/code><\/td>\u63a8\u9001\u9ed8\u8ba4\u7c7b\u578b\u4e8b\u4ef6<\/td>\u4e8b\u4ef6\u7c7b\u578b\u4e3a message<\/code>\uff0cdata \u4f1a\u88ab\u5e8f\u5217\u5316\u4e3a\u5b57\u7b26\u4e32<\/td><\/tr>
                        send(SseEventBuilder event)<\/code><\/td>\u63a8\u9001\u81ea\u5b9a\u4e49\u4e8b\u4ef6<\/td>\u53ef\u6307\u5b9a event \u540d\u79f0\u3001id\u3001data\u3001comment<\/td><\/tr>
                        complete()<\/code><\/td>\u6b63\u5e38\u7ed3\u675f<\/td>\u5173\u95ed SSE \u8fde\u63a5<\/td><\/tr>
                        completeWithError(Throwable ex)<\/code><\/td>\u5f02\u5e38\u7ed3\u675f<\/td>\u5173\u95ed\u8fde\u63a5\u5e76\u89e6\u53d1 onError \u56de\u8c03<\/td><\/tr>
                        onCompletion(Runnable)<\/code><\/td>\u8fde\u63a5\u5173\u95ed\u56de\u8c03<\/td>\u4e0d\u7ba1\u6b63\u5e38\u8fd8\u662f\u5f02\u5e38\u5173\u95ed\u90fd\u4f1a\u89e6\u53d1<\/td><\/tr>
                        onTimeout(Runnable)<\/code><\/td>\u8d85\u65f6\u56de\u8c03<\/td>\u8d85\u65f6\u65f6\u89e6\u53d1<\/td><\/tr>
                        onError(Consumer<Throwable>)<\/code><\/td>\u9519\u8bef\u56de\u8c03<\/td>\u51fa\u9519\u65f6\u89e6\u53d1<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                        \u5176\u4e2d send(SseEventBuilder)<\/code> \u662f\u6700\u5e38\u7528\u7684\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u6307\u5b9a\u4e8b\u4ef6\u7c7b\u578b\uff1a<\/p>\n\n\n\n
                        \/\/ \u63a8\u9001\u4e00\u4e2a token \u4e8b\u4ef6\nemitter.send(SseEmitter.event()\n        .name(\"token\")                    \/\/ event: token\n        .data(\"{\\\"content\\\":\\\"\u4f60\u597d\\\"}\"));  \/\/ data: {\"content\":\"\u4f60\u597d\"}\n\n\/\/ \u63a8\u9001\u4e00\u4e2a done \u4e8b\u4ef6\nemitter.send(SseEmitter.event()\n        .name(\"done\")\n        .data(\"{\\\"usage\\\":{\\\"total_tokens\\\":128}}\"));\n\n\/\/ \u63a8\u9001\u4e00\u4e2a\u6ce8\u91ca\uff08\u5fc3\u8df3\u4fdd\u6d3b\uff09\nemitter.send(SseEmitter.event()\n        .comment(\"keepalive\"));<\/code><\/pre>\n\n\n\n
                        \u8fd8\u8bb0\u5f97\u4e0a\u4e00\u7bc7\u8bb2\u7684 SSE event:<\/code> \u5b57\u6bb5\u5417\uff1f\u5927\u6a21\u578b API \u901a\u5e38\u4e0d\u7528 event:<\/code> \u5b57\u6bb5\uff0c\u6240\u6709\u4e8b\u4ef6\u90fd\u662f\u9ed8\u8ba4\u7684 message<\/code> \u7c7b\u578b\u3002\u4f46\u4f60\u81ea\u5df1\u642d\u5efa SSE \u670d\u52a1\u7aef\u65f6\uff0cevent:<\/code> \u5b57\u6bb5\u5c31\u5f88\u6709\u7528\u4e86\u2014\u2014\u524d\u7aef\u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u7684\u4e8b\u4ef6\u7c7b\u578b\u505a\u4e0d\u540c\u7684\u5904\u7406\u3002<\/p>\n\n\n\n
                        3. SseEmitter \u7684\u7ebf\u7a0b\u6a21\u578b<\/h3>\n\n\n\n
                        SseEmitter<\/code> \u7684\u5f02\u6b65\u672c\u8d28\u662f\u7406\u89e3\u5b83\u7684\u5173\u952e\u3002\u6574\u4e2a\u8fc7\u7a0b\u6d89\u53ca\u4e24\u4e2a\u7ebf\u7a0b\uff1a<\/p>\n\n\n\n
                        Controller \u7ebf\u7a0b<\/strong>\uff08Tomcat \u7ebf\u7a0b\u6c60\u91cc\u7684\u7ebf\u7a0b\uff09\uff1a<\/p>\n\n\n\n
                          \n
                        1. 1.\u63a5\u6536 HTTP \u8bf7\u6c42<\/li>\n\n\n\n
                        2. 2.\u521b\u5efa SseEmitter<\/code> \u5bf9\u8c61<\/li>\n\n\n\n
                        3. 3.\u542f\u52a8\u5f02\u6b65\u4efb\u52a1\uff08\u628a SseEmitter<\/code> \u5bf9\u8c61\u4f20\u7ed9\u5f02\u6b65\u7ebf\u7a0b\uff09<\/li>\n\n\n\n
                        4. 4.\u8fd4\u56de SseEmitter<\/code> \u5bf9\u8c61<\/li>\n\n\n\n
                        5. 5.Controller \u7ebf\u7a0b\u7ed3\u675f\uff0c\u91ca\u653e\u56de Tomcat \u7ebf\u7a0b\u6c60<\/strong><\/li>\n<\/ol>\n\n\n\n
                          \u63a8\u9001\u7ebf\u7a0b<\/strong>\uff08\u4f60\u81ea\u5df1\u521b\u5efa\u7684\u5f02\u6b65\u7ebf\u7a0b\uff09\uff1a<\/p>\n\n\n\n
                            \n
                          1. 1.\u62ff\u7740 SseEmitter<\/code> \u5bf9\u8c61<\/li>\n\n\n\n
                          2. 2.\u8c03\u7528\u5927\u6a21\u578b\u6d41\u5f0f API<\/li>\n\n\n\n
                          3. 3.\u5728\u56de\u8c03\u91cc\u8c03\u7528 emitter.send()<\/code> \u9010 Token \u63a8\u9001<\/li>\n\n\n\n
                          4. 4.\u8c03\u7528 emitter.complete()<\/code> \u7ed3\u675f<\/li>\n<\/ol>\n\n\n\n
                            \u8fd9\u4e2a\u8bbe\u8ba1\u7684\u597d\u5904\u662f Controller \u7ebf\u7a0b\u4e0d\u4f1a\u88ab\u957f\u65f6\u95f4\u5360\u7528<\/strong>\u3002\u5982\u679c\u4e0d\u7528 SseEmitter<\/code>\uff0c\u800c\u662f\u5728 Controller \u91cc\u76f4\u63a5\u5199\u4e00\u4e2a\u5faa\u73af\u53d1\u9001\u6570\u636e\uff0c\u90a3\u8fd9\u4e2a\u8bf7\u6c42\u4f1a\u5360\u4f4f\u4e00\u4e2a Tomcat \u7ebf\u7a0b\u76f4\u5230\u6d41\u7ed3\u675f\u2014\u201430 \u79d2\u7684\u6d41\u5f0f\u751f\u6210\u5c31\u5360\u4f4f\u4e00\u4e2a\u7ebf\u7a0b 30 \u79d2\u3002Tomcat \u9ed8\u8ba4 200 \u4e2a\u7ebf\u7a0b\uff0c200 \u4e2a\u5e76\u53d1\u7528\u6237\u5c31\u628a\u7ebf\u7a0b\u6c60\u6253\u6ee1\u4e86\u3002<\/p>\n\n\n\n
                            \u7528 SseEmitter<\/code>\uff0cController \u7ebf\u7a0b\u51e0\u6beb\u79d2\u5c31\u91ca\u653e\u4e86\u3002\u63a8\u9001\u64cd\u4f5c\u5728\u72ec\u7acb\u7684\u7ebf\u7a0b\u4e2d\u8fdb\u884c\uff0c\u4e0d\u5360 Tomcat \u7ebf\u7a0b\u6c60\u3002<\/p>\n\n\n\n
                            \n
                            \u5982\u679c\u4f60\u5728 Controller \u7ebf\u7a0b\u91cc\u76f4\u63a5\u8c03 send()<\/code> \u53d1\u5b8c\u6240\u6709\u6570\u636e\u518d complete()<\/code>\uff0c\u90a3\u548c\u666e\u901a\u63a5\u53e3\u6ca1\u4ec0\u4e48\u533a\u522b\u2014\u2014\u7ebf\u7a0b\u8fd8\u662f\u88ab\u5360\u4f4f\u4e86\u3002SseEmitter<\/code> \u7684\u4ef7\u503c\u5728\u4e8e\u8de8\u7ebf\u7a0b\u63a8\u9001<\/strong>\uff1aController \u7ebf\u7a0b\u8fd4\u56de\uff0c\u63a8\u9001\u7ebf\u7a0b\u63a5\u7ba1\u3002<\/p>\n<\/blockquote>\n\n\n\n
                            Java \u5b9e\u6218\uff1a\u4e09\u4e2a\u5c42\u6b21\u7684 SSE \u670d\u52a1\u7aef<\/h2>\n\n\n\n
                            1. \u6700\u7b80\u7248\uff1aHello SSE<\/h3>\n\n\n\n
                            \n
                            \u4e0b\u8ff0\u4e3a\u793a\u4f8b\u4ee3\u7801\uff0c\u5927\u5bb6\u53ef\u81ea\u884c\u521b\u5efa\u9879\u76ee\u8fdb\u884c\u8fd0\u884c\u9a8c\u8bc1\uff0c\u4e5f\u53ef\u4ec5\u5173\u6ce8\u5176\u4e2d\u7684\u6838\u5fc3\u601d\u60f3\u3002\u5173\u4e8e\u57fa\u7840\u7684 Spring Boot \u6846\u67b6\u4ee3\u7801\u903b\u8f91\uff0c\u672c\u6587\u5728\u6982\u5ff5\u7ae0\u8282\u4e2d\u4e0d\u518d\u505a\u8fc7\u591a\u5c55\u5f00\u3002<\/p>\n<\/blockquote>\n\n\n\n
                            \u5148\u7528\u6700\u5c11\u7684\u4ee3\u7801\u8dd1\u901a\u4e00\u4e2a SSE \u63a5\u53e3\uff0c\u7406\u89e3 SseEmitter<\/code> \u7684\u57fa\u672c\u5957\u8def\u3002<\/p>\n\n\n\n
                            @RestController\n@RequestMapping(\"\/api\/sse\")\npublic class SimpleSseController {\n\n    @GetMapping(\"\/hello\")\n    public SseEmitter hello() {\n        \/\/ \u521b\u5efa SseEmitter\uff0c\u8d85\u65f6 60 \u79d2\n        SseEmitter emitter = new SseEmitter(60_000L);\n\n        \/\/ \u542f\u52a8\u4e00\u4e2a\u65b0\u7ebf\u7a0b\u505a\u6570\u636e\u63a8\u9001\uff08\u4e0d\u80fd\u5728 Controller \u7ebf\u7a0b\u91cc\u505a\uff09\u63a8\u9001\u903b\u8f91\u662f\u5f02\u6b65\u957f\u4efb\u52a1\uff1a\u9002\u5408\u4ea4\u7ed9\u72ec\u7acb\u7ebf\u7a0b\/\u7ebf\u7a0b\u6c60\u5904\u7406\n        new Thread(() -> {\n            try {\n                for (int i = 1; i <= 5; i++) {\n                    \/\/ \u63a8\u9001\u4e8b\u4ef6\uff1aevent \u540d\u79f0\u4e3a \"message\"\uff08\u9ed8\u8ba4\uff09\uff0cdata \u662f\u5b57\u7b26\u4e32\n                    emitter.send(SseEmitter.event()\n                            .name(\"token\")\n                            .data(\"\u7b2c \" + i + \" \u6761\u6d88\u606f\"));\n                    Thread.sleep(1000);  \/\/ \u6bcf\u79d2\u63a8\u9001\u4e00\u6761\n                }\n                \/\/ \u63a8\u9001\u5b8c\u6bd5\uff0c\u5173\u95ed\u8fde\u63a5\n                emitter.send(SseEmitter.event()\n                        .name(\"done\")\n                        .data(\"{\\\"msg\\\":\\\"\u63a8\u9001\u5b8c\u6bd5\\\"}\"));\n                emitter.complete();\n            } catch (Exception e) {\n                emitter.completeWithError(e);\n            }\n        }).start();\n\n        \/\/ Controller \u7ebf\u7a0b\u7acb\u5373\u8fd4\u56de\uff0c\u4e0d\u7b49\u63a8\u9001\u5b8c\u6210\n        return emitter;\n    }\n}<\/code><\/pre>\n\n\n\n
                            \u542f\u52a8 Spring Boot \u4e4b\u540e\uff0c\u7528\u6d4f\u89c8\u5668\u76f4\u63a5\u8bbf\u95ee http:\/\/localhost:8080\/api\/sse\/hello<\/code>\uff0c\u4f60\u4f1a\u770b\u5230\u6570\u636e\u4e00\u6761\u4e00\u6761\u5730\u51fa\u73b0\u2014\u2014\u6bcf\u79d2\u51fa\u4e00\u6761\uff0c5 \u79d2\u540e\u7ed3\u675f\u3002<\/p>\n\n\n\n
                            \u4e5f\u53ef\u4ee5\u7528\u4e0b\u9762\u8fd9\u6bb5 HTML \u5728\u6d4f\u89c8\u5668\u91cc\u6d4b\u8bd5\uff08\u540e\u9762\u5b8c\u6574\u7248\u4e5f\u7528\u8fd9\u79cd\u65b9\u5f0f\u9a8c\u8bc1\uff09\uff1a<\/p>\n\n\n\n
                            <!DOCTYPE html><html><body><h3>SSE \u6d4b\u8bd5<\/h3><div id=\"output\"><\/div><script>\n    const output = document.getElementById('output');\n    const eventSource = new EventSource('\/api\/sse\/hello');\n\n    eventSource.addEventListener('token', function(e) {\n        output.innerHTML += '<p>\u6536\u5230 token: ' + e.data + '<\/p>';\n    });\n\n    eventSource.addEventListener('done', function(e) {\n        output.innerHTML += '<p style=\"color:green\">\u5b8c\u6210: ' + e.data + '<\/p>';\n        eventSource.close();  \/\/ \u6536\u5230 done \u4e8b\u4ef6\u540e\u5173\u95ed\u8fde\u63a5\n    });\n\n    eventSource.onerror = function() {\n        output.innerHTML += '<p style=\"color:red\">\u8fde\u63a5\u65ad\u5f00<\/p>';\n        eventSource.close();\n    };\n<\/script><\/body><\/html><\/code><\/pre>\n\n\n\n
                            \u8fd9\u4e2a\u6700\u7b80\u7248\u80fd\u8dd1\u901a\uff0c\u4f46\u79bb\u751f\u4ea7\u53ef\u7528\u8fd8\u6709\u8ddd\u79bb\u2014\u2014\u6ca1\u6709\u63a5\u5165\u5927\u6a21\u578b\u3001\u6ca1\u6709\u5fc3\u8df3\u3001\u6ca1\u6709\u65ad\u8fde\u68c0\u6d4b\u3002\u63a5\u4e0b\u6765\u4e00\u6b65\u6b65\u52a0\u3002<\/p>\n\n\n\n
                            2. \u5b8c\u6574\u7248\uff1a\u63a5\u5165\u5927\u6a21\u578b\u6d41\u5f0f\u8f6c\u53d1<\/h3>\n\n\n\n
                            \u5b8c\u6574\u7248\u8981\u5b9e\u73b0\u7684\u94fe\u8def\u662f\uff1a\u524d\u7aef\u53d1\u8bf7\u6c42 \u2192 Spring Boot \u63a5\u6536 \u2192 \u8c03\u7528\u5927\u6a21\u578b\u6d41\u5f0f API \u2192 \u9010 Token \u8f6c\u53d1\u7ed9\u524d\u7aef\u3002<\/p>\n\n\n\n
                            \u4e8b\u4ef6\u7c7b\u578b\u8bbe\u8ba1\uff1a<\/p>\n\n\n\n
                            \u4e8b\u4ef6\u540d\u79f0<\/th>\u7528\u9014<\/th>data \u683c\u5f0f<\/th><\/tr>
                            token<\/code><\/td>\u5185\u5bb9\u589e\u91cf<\/td>{\"content\": \"\u4e00\u6bb5\u6587\u5b57\"}<\/code><\/td><\/tr>
                            done<\/code><\/td>\u6d41\u7ed3\u675f<\/td>{\"usage\": {\"prompt_tokens\":15, \"completion_tokens\":12}}<\/code><\/td><\/tr>
                            error<\/code><\/td>\u9519\u8bef\u901a\u77e5<\/td>{\"code\": 500, \"message\": \"\u9519\u8bef\u63cf\u8ff0\"}<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                            \u524d\u7aef\u6839\u636e\u4e8b\u4ef6\u7c7b\u578b\u505a\u4e0d\u540c\u5904\u7406\u2014\u2014\u6536\u5230 token<\/code> \u5c31\u62fc\u63a5\u5185\u5bb9\uff0c\u6536\u5230 done<\/code> \u5c31\u7ed3\u675f\uff0c\u6536\u5230 error<\/code> \u5c31\u5c55\u793a\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n\n\n\n
                            2.1 \u8bf7\u6c42\u548c\u54cd\u5e94\u7ed3\u6784<\/h4>\n\n\n\n
                            \/** \u524d\u7aef\u8bf7\u6c42\u4f53 *\/publicclassChatRequest{privateString question;\/\/ getter\/setter \u7701\u7565}<\/code><\/pre>\n\n\n\n
                            2.2 Controller \u5c42<\/h4>\n\n\n\n
                            @RestController@RequestMapping(\"\/api\/chat\")publicclassChatController{privatefinalChatService chatService;publicChatController(ChatService chatService){this.chatService = chatService;}@GetMapping(\"\/stream\")publicSseEmitterstream(@RequestParamString question){\/\/ \u521b\u5efa SseEmitter\uff0c\u8d85\u65f6 3 \u5206\u949fSseEmitter emitter =newSseEmitter(180_000L);\/\/ \u8bbe\u7f6e\u56de\u8c03\uff08\u8fde\u63a5\u5173\u95ed\u65f6\u7684\u6e05\u7406\u903b\u8f91\uff09\n        emitter.onCompletion(()->System.out.println(\"SSE \u8fde\u63a5\u5173\u95ed\"));\n        emitter.onTimeout(()->System.out.println(\"SSE \u8fde\u63a5\u8d85\u65f6\"));\n        emitter.onError(e ->System.err.println(\"SSE \u8fde\u63a5\u5f02\u5e38: \"+ e.getMessage()));\/\/ \u5f02\u6b65\u7ebf\u7a0b\u4e2d\u8c03\u7528\u5927\u6a21\u578b\u5e76\u8f6c\u53d1\n        chatService.streamChat(question, emitter);return emitter;}}<\/code><\/pre>\n\n\n\n
                            \n
                            \u8fd9\u91cc\u7528 @GetMapping<\/code> + @RequestParam<\/code> \u662f\u4e3a\u4e86\u517c\u5bb9\u6d4f\u89c8\u5668\u539f\u751f\u7684 EventSource<\/code> API\uff08\u5b83\u53ea\u652f\u6301 GET \u8bf7\u6c42\uff09\u3002\u5982\u679c\u4f60\u7684\u524d\u7aef\u7528 fetch<\/code> \u6765\u6d88\u8d39 SSE\uff08\u540e\u9762\u4f1a\u8bb2\uff09\uff0c\u53ef\u4ee5\u6539\u6210 @PostMapping<\/code> + @RequestBody<\/code>\uff0c\u652f\u6301\u66f4\u590d\u6742\u7684\u8bf7\u6c42\u4f53\u3002<\/p>\n<\/blockquote>\n\n\n\n
                            2.3 Service \u5c42\uff1a\u6d41\u5f0f\u8f6c\u53d1\u6838\u5fc3\u903b\u8f91<\/h4>\n\n\n\n
                            @ServicepublicclassChatService{privatestaticfinalStringAPI_URL=\"https:\/\/api.siliconflow.cn\/v1\/chat\/completions\";privatestaticfinalStringAPI_KEY=\"sk-xxx\";\/\/ \u66ff\u6362\u4e3a\u4f60\u7684 API KeyprivatestaticfinalStringMODEL=\"Qwen\/Qwen3-32B\";privatefinalOkHttpClient httpClient =newOkHttpClient.Builder().connectTimeout(15,TimeUnit.SECONDS).readTimeout(60,TimeUnit.SECONDS).writeTimeout(15,TimeUnit.SECONDS).build();privatefinalGson gson =newGson();\/**\n     * \u5f02\u6b65\u8c03\u7528\u5927\u6a21\u578b\u6d41\u5f0f API\uff0c\u9010 Token \u901a\u8fc7 SseEmitter \u8f6c\u53d1\u7ed9\u524d\u7aef\n     *\/publicvoidstreamChat(String question,SseEmitter emitter){\/\/ \u5728\u65b0\u7ebf\u7a0b\u4e2d\u6267\u884c\uff08\u751f\u4ea7\u73af\u5883\u5e94\u4f7f\u7528\u7ebf\u7a0b\u6c60\uff0c\u540e\u9762\u4f1a\u8bb2\uff09newThread(()->doStreamChat(question, emitter)).start();}privatevoiddoStreamChat(String question,SseEmitter emitter){\/\/ 1. \u6784\u5efa\u5927\u6a21\u578b\u8bf7\u6c42\u4f53JsonObject requestBody =newJsonObject();\n        requestBody.addProperty(\"model\",MODEL);\n        requestBody.addProperty(\"temperature\",0.7);\n        requestBody.addProperty(\"max_tokens\",2048);\n        requestBody.addProperty(\"stream\",true);JsonArray messages =newJsonArray();JsonObject systemMsg =newJsonObject();\n        systemMsg.addProperty(\"role\",\"system\");\n        systemMsg.addProperty(\"content\",\"\u4f60\u662f\u4e00\u4e2a\u6280\u672f\u4e13\u5bb6\uff0c\u56de\u7b54\u7b80\u6d01\u6e05\u6670\u3002\");\n        messages.add(systemMsg);JsonObject userMsg =newJsonObject();\n        userMsg.addProperty(\"role\",\"user\");\n        userMsg.addProperty(\"content\", question);\n        messages.add(userMsg);\n        requestBody.add(\"messages\", messages);\/\/ 2. \u53d1\u8d77 HTTP \u8bf7\u6c42Request request =newRequest.Builder().url(API_URL).addHeader(\"Authorization\",\"Bearer \"+API_KEY).addHeader(\"Content-Type\",\"application\/json\").addHeader(\"Accept\",\"text\/event-stream\").post(RequestBody.create(requestBody.toString(),MediaType.parse(\"application\/json\"))).build();\/\/ 3. \u89e3\u6790 SSE \u6d41\u5e76\u8f6c\u53d1try(Response response = httpClient.newCall(request).execute()){if(!response.isSuccessful()){sendError(emitter, response.code(),\"\u5927\u6a21\u578b API \u8c03\u7528\u5931\u8d25: HTTP \"+ response.code());return;}BufferedReader reader =newBufferedReader(newInputStreamReader(response.body().byteStream(),StandardCharsets.UTF_8));String line;while((line = reader.readLine())!=null){if(line.isEmpty()|| line.startsWith(\":\")){continue;}if(!line.startsWith(\"data:\")){continue;}String data = line.substring(5);if(data.startsWith(\" \")){\n                    data = data.substring(1);}if(\"[DONE]\".equals(data)){\/\/ \u6d41\u7ed3\u675f\uff0c\u53d1\u9001 done \u4e8b\u4ef6\n                    emitter.send(SseEmitter.event().name(\"done\").data(\"{\\\"msg\\\":\\\"completed\\\"}\"));\n                    emitter.complete();return;}\/\/ \u89e3\u6790 JSONJsonObject chunk;try{\n                    chunk =JsonParser.parseString(data).getAsJsonObject();}catch(Exception e){continue;\/\/ JSON \u89e3\u6790\u5931\u8d25\uff0c\u8df3\u8fc7}\/\/ \u63d0\u53d6 contentJsonArray choices = chunk.getAsJsonArray(\"choices\");if(choices ==null|| choices.isEmpty()){\/\/ \u53ef\u80fd\u662f\u53ea\u6709 usage \u7684 chunkif(chunk.has(\"usage\")&&!chunk.get(\"usage\").isJsonNull()){JsonObject usage = chunk.getAsJsonObject(\"usage\");\n                        emitter.send(SseEmitter.event().name(\"done\").data(gson.toJson(usage)));\n                        emitter.complete();return;}continue;}JsonObject choice = choices.get(0).getAsJsonObject();JsonObject delta = choice.getAsJsonObject(\"delta\");if(delta !=null&& delta.has(\"content\")){JsonElement contentElement = delta.get(\"content\");if(!contentElement.isJsonNull()){String token = contentElement.getAsString();if(!token.isEmpty()){\/\/ \u6838\u5fc3\uff1a\u901a\u8fc7 SseEmitter \u628a token \u63a8\u9001\u7ed9\u524d\u7aef\n                            emitter.send(SseEmitter.event().name(\"token\").data(\"{\\\"content\\\":\\\"\"+escapeJson(token)+\"\\\"}\"));}}}\/\/ \u68c0\u67e5 finish_reason\uff0c\u63d0\u53d6 usageJsonElement finishElement = choice.get(\"finish_reason\");if(finishElement !=null&&!finishElement.isJsonNull()){if(chunk.has(\"usage\")&&!chunk.get(\"usage\").isJsonNull()){JsonObject usage = chunk.getAsJsonObject(\"usage\");\n                        emitter.send(SseEmitter.event().name(\"done\").data(gson.toJson(usage)));}}}\/\/ readLine \u8fd4\u56de null \u4f46\u6ca1\u6536\u5230 [DONE]\uff0c\u8fde\u63a5\u5f02\u5e38sendError(emitter,500,\"\u6d41\u5f0f\u54cd\u5e94\u5f02\u5e38\u7ed3\u675f\");}catch(IOException e){sendError(emitter,500,\"\u8fde\u63a5\u5f02\u5e38: \"+ e.getMessage());}}\/** \u5411\u524d\u7aef\u63a8\u9001\u9519\u8bef\u4e8b\u4ef6 *\/privatevoidsendError(SseEmitter emitter,int code,String message){try{\n            emitter.send(SseEmitter.event().name(\"error\").data(\"{\\\"code\\\":\"+ code +\",\\\"message\\\":\\\"\"+escapeJson(message)+\"\\\"}\"));\n            emitter.complete();}catch(IOException e){\n            emitter.completeWithError(e);}}\/** \u7b80\u5355\u7684 JSON \u5b57\u7b26\u4e32\u8f6c\u4e49 *\/privateStringescapeJson(String s){return s.replace(\"\\\\\",\"\\\\\\\\\").replace(\"\\\"\",\"\\\\\\\"\").replace(\"\\n\",\"\\\\n\").replace(\"\\r\",\"\\\\r\").replace(\"\\t\",\"\\\\t\");}}<\/code><\/pre>\n\n\n\n
                            \u6838\u5fc3\u903b\u8f91\u5c31\u662f\u4e00\u53e5\u8bdd\uff1a\u5728\u5927\u6a21\u578b SSE \u5ba2\u6237\u7aef\u7684\u56de\u8c03\u91cc\uff0c\u8c03\u7528 emitter.send()<\/code> \u628a\u6570\u636e\u8f6c\u53d1\u7ed9\u524d\u7aef<\/strong>\u3002<\/p>\n\n\n\n
                            \u6574\u4e2a\u94fe\u8def\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n
                              \n
                            1. 1.\u524d\u7aef\u53d1\u8bf7\u6c42 \u2192 Controller \u521b\u5efa SseEmitter<\/code>\uff0c\u542f\u52a8\u5f02\u6b65\u7ebf\u7a0b\uff0c\u7acb\u5373\u8fd4\u56de<\/li>\n\n\n\n
                            2. 2.\u5f02\u6b65\u7ebf\u7a0b\u8c03\u7528\u5927\u6a21\u578b\u6d41\u5f0f API \u2192 \u9010\u884c\u8bfb\u53d6 data:<\/code> \u884c<\/li>\n\n\n\n
                            3. 3.\u89e3\u6790\u51fa delta.content<\/code> \u2192 \u901a\u8fc7 emitter.send()<\/code> \u63a8\u9001 token<\/code> \u4e8b\u4ef6\u7ed9\u524d\u7aef<\/li>\n\n\n\n
                            4. 4.\u6536\u5230 [DONE]<\/code> \u2192 \u63a8\u9001 done<\/code> \u4e8b\u4ef6 \u2192 emitter.complete()<\/code> \u5173\u95ed\u8fde\u63a5<\/li>\n\n\n\n
                            5. 5.\u51fa\u9519 \u2192 \u63a8\u9001 error<\/code> \u4e8b\u4ef6 \u2192 emitter.complete()<\/code> \u5173\u95ed\u8fde\u63a5<\/li>\n<\/ol>\n\n\n\n
                              \n
                              \u6ce8\u610f sendError<\/code> \u65b9\u6cd5\u7684\u8bbe\u8ba1\u2014\u2014\u51fa\u9519\u65f6\u4e0d\u662f\u76f4\u63a5 completeWithError()<\/code>\uff0c\u800c\u662f\u5148\u901a\u8fc7 SSE \u63a8\u9001\u4e00\u4e2a error<\/code> \u4e8b\u4ef6\u8ba9\u524d\u7aef\u77e5\u9053\u51fa\u4e86\u4ec0\u4e48\u95ee\u9898\uff0c\u7136\u540e\u518d complete()<\/code>\u3002\u5982\u679c\u76f4\u63a5 completeWithError()<\/code>\uff0c\u524d\u7aef\u53ea\u77e5\u9053\u8fde\u63a5\u65ad\u4e86\uff0c\u4e0d\u77e5\u9053\u4e3a\u4ec0\u4e48\u65ad\u4e86\u3002<\/p>\n<\/blockquote>\n\n\n\n
                              3. \u751f\u4ea7\u7248\uff1a\u8fde\u63a5\u7ba1\u7406\u4e0e\u5065\u58ee\u6027<\/h3>\n\n\n\n
                              \u5b8c\u6574\u7248\u80fd\u8dd1\u4e86\uff0c\u4f46\u5728\u751f\u4ea7\u73af\u5883\u8fd8\u6709\u51e0\u4e2a\u95ee\u9898\u9700\u8981\u89e3\u51b3\u3002<\/p>\n\n\n\n
                              3.1 \u8d85\u65f6\u8bbe\u7f6e<\/h4>\n\n\n\n
                              SseEmitter<\/code> \u7684\u9ed8\u8ba4\u8d85\u65f6\u662f 30 \u79d2\u3002\u5927\u6a21\u578b\u751f\u6210\u4e00\u6b21\u56de\u7b54\u53ef\u80fd\u9700\u8981 30~60 \u79d2\uff08\u7279\u522b\u662f\u957f\u6587\u672c\u3001\u6df1\u5ea6\u601d\u8003\u573a\u666f\uff09\uff0c30 \u79d2\u4e00\u5230 SseEmitter<\/code> \u81ea\u52a8\u5173\u95ed\u8fde\u63a5\uff0c\u524d\u7aef\u76f4\u63a5\u65ad\u4e86\u3002<\/p>\n\n\n\n
                              \u5efa\u8bae\u628a SseEmitter<\/code> \u7684\u8d85\u65f6\u8bbe\u4e3a 3~5 \u5206\u949f<\/strong>\uff1a<\/p>\n\n\n\n
                              SseEmitter emitter =newSseEmitter(180_000L);\/\/ 3 \u5206\u949f<\/code><\/pre>\n\n\n\n
                              \u8fd9\u91cc\u6709\u4e00\u4e2a\u5bb9\u6613\u6df7\u6dc6\u7684\u5730\u65b9\uff1aSseEmitter<\/code> \u7684\u8d85\u65f6\u548c OkHttp \u7684 readTimeout<\/code> \u662f\u4e24\u56de\u4e8b\u3002<\/p>\n\n\n\n
                              \u8d85\u65f6\u7c7b\u578b<\/th>\u542b\u4e49<\/th>\u5efa\u8bae\u503c<\/th><\/tr>
                              SseEmitter(timeout)<\/code><\/td>\u6574\u4e2a SSE \u8fde\u63a5\u7684\u751f\u547d\u5468\u671f\u4e0a\u9650<\/strong><\/td>3~5 \u5206\u949f<\/td><\/tr>
                              OkHttp readTimeout<\/code><\/td>\u8c03\u7528\u5927\u6a21\u578b API \u65f6\uff0c\u4e24\u4e2a chunk \u4e4b\u95f4\u7684\u6700\u5927\u7b49\u5f85\u95f4\u9694<\/strong><\/td>30~60 \u79d2<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                              SseEmitter<\/code> \u8d85\u65f6\u662f\u8fd9\u6b21\u5bf9\u8bdd\u6700\u591a\u6301\u7eed\u591a\u4e45\uff0cOkHttp readTimeout<\/code> \u662f\u5927\u6a21\u578b\u591a\u4e45\u6ca1\u5410\u51fa\u65b0 token \u5c31\u8ba4\u4e3a\u5b83\u5361\u4f4f\u4e86\u3002\u4e24\u4e2a\u7ef4\u5ea6\u4e0d\u540c\uff0c\u4e0d\u8981\u641e\u6df7\u3002<\/p>\n\n\n\n
                              3.2 \u5fc3\u8df3\u4fdd\u6d3b<\/h4>\n\n\n\n
                              \u6a21\u578b\u5728\u601d\u8003\u65f6\uff0c\u53ef\u80fd\u51e0\u79d2\u751a\u81f3\u5341\u51e0\u79d2\u6ca1\u6709\u8f93\u51fa\u3002\u5982\u679c\u4f60\u7684 Spring Boot \u524d\u9762\u6709 Nginx \u53cd\u5411\u4ee3\u7406\uff0cNginx \u7684 proxy_read_timeout<\/code> \u9ed8\u8ba4 60 \u79d2\u2014\u2014\u8d85\u8fc7 60 \u79d2\u6ca1\u6709\u6570\u636e\u4f20\u8f93\uff0cNginx \u4f1a\u4e3b\u52a8\u65ad\u5f00\u8fde\u63a5\u3002<\/p>\n\n\n\n
                              \u89e3\u51b3\u65b9\u6848\uff1a\u5b9a\u671f\u53d1\u9001\u5fc3\u8df3\u6ce8\u91ca\u4e8b\u4ef6\u3002\u4e0a\u4e00\u7bc7\u8bb2\u8fc7\uff0cSSE \u7684\u6ce8\u91ca\u884c\uff08:<\/code> \u5f00\u5934\uff09\u4f1a\u88ab\u5ba2\u6237\u7aef\u5ffd\u7565\uff0c\u4f46\u5bf9\u4e2d\u95f4\u4ef6\u6765\u8bf4\u6709\u6570\u636e\u5728\u4f20\u8f93\uff0c\u5c31\u4e0d\u4f1a\u8d85\u65f6\u65ad\u5f00\u3002<\/p>\n\n\n\n
                              @ServicepublicclassChatService{\/\/ \u5fc3\u8df3\u5b9a\u65f6\u5668privatefinalScheduledExecutorService heartbeatScheduler =Executors.newScheduledThreadPool(2);publicvoidstreamChat(String question,SseEmitter emitter){\/\/ \u542f\u52a8\u5fc3\u8df3\uff1a\u6bcf 15 \u79d2\u53d1\u9001\u4e00\u6b21\u6ce8\u91ca\u4e8b\u4ef6ScheduledFuture<?> heartbeat = heartbeatScheduler.scheduleAtFixedRate(()->{try{\n                emitter.send(SseEmitter.event().comment(\"keepalive\"));}catch(IOException e){\/\/ \u53d1\u9001\u5931\u8d25\u8bf4\u660e\u8fde\u63a5\u5df2\u65ad\u5f00\uff0c\u4e0d\u9700\u8981\u5904\u7406}},15,15,TimeUnit.SECONDS);newThread(()->{try{doStreamChat(question, emitter);}finally{\/\/ \u4e0d\u7ba1\u6210\u529f\u8fd8\u662f\u5931\u8d25\uff0c\u90fd\u8981\u505c\u6b62\u5fc3\u8df3\n                heartbeat.cancel(false);}}).start();}}<\/code><\/pre>\n\n\n\n
                              \u5fc3\u8df3\u95f4\u9694\u5efa\u8bae 15~20 \u79d2<\/strong>\u3002\u592a\u9891\u7e41\u6d6a\u8d39\u5e26\u5bbd\uff0c\u592a\u7a00\u758f\u53ef\u80fd\u8fd8\u662f\u4f1a\u88ab\u4e2d\u95f4\u4ef6\u65ad\u5f00\u3002<\/p>\n\n\n\n
                              3.3 \u5ba2\u6237\u7aef\u65ad\u8fde\u68c0\u6d4b<\/h4>\n\n\n\n
                              \u7528\u6237\u5173\u95ed\u6d4f\u89c8\u5668\u6807\u7b7e\u9875\u3001\u5237\u65b0\u9875\u9762\u3001\u6216\u8005\u7f51\u7edc\u65ad\u5f00\uff0cSSE \u8fde\u63a5\u4f1a\u4ece\u5ba2\u6237\u7aef\u4fa7\u65ad\u5f00\u3002\u8fd9\u65f6\u5019\u540e\u7aef\u53ef\u80fd\u8fd8\u5728\u8c03\u7528\u5927\u6a21\u578b API\u2014\u2014\u7528\u6237\u5df2\u7ecf\u8d70\u4e86\uff0c\u4f60\u8fd8\u5728\u82b1\u94b1\u8c03 API\uff0c\u7eaf\u6d6a\u8d39\u3002<\/p>\n\n\n\n
                              SseEmitter<\/code> \u63d0\u4f9b\u4e86\u4e09\u4e2a\u56de\u8c03\u6765\u611f\u77e5\u8fde\u63a5\u72b6\u6001\u53d8\u5316\uff1a<\/p>\n\n\n\n
                              SseEmitter emitter =newSseEmitter(180_000L);\n\nemitter.onCompletion(()->{System.out.println(\"\u8fde\u63a5\u5173\u95ed\uff08\u6b63\u5e38\u6216\u5f02\u5e38\uff09\");\/\/ \u6e05\u7406\u8d44\u6e90\uff1a\u505c\u6b62\u5fc3\u8df3\u3001\u4ece\u8fde\u63a5\u6c60\u79fb\u9664});\n\nemitter.onTimeout(()->{System.out.println(\"\u8fde\u63a5\u8d85\u65f6\");\/\/ \u8d85\u65f6\u4e5f\u4f1a\u89e6\u53d1 onCompletion});\n\nemitter.onError(e ->{System.out.println(\"\u8fde\u63a5\u5f02\u5e38: \"+ e.getMessage());\/\/ \u5f02\u5e38\u4e5f\u4f1a\u89e6\u53d1 onCompletion});<\/code><\/pre>\n\n\n\n
                              \n
                              onCompletion<\/code> \u662f\u6700\u7ec8\u56de\u8c03\u2014\u2014\u4e0d\u7ba1\u8fde\u63a5\u662f\u6b63\u5e38 complete()<\/code> \u7ed3\u675f\u3001\u8d85\u65f6\u7ed3\u675f\u3001\u8fd8\u662f\u5f02\u5e38\u7ed3\u675f\uff0conCompletion<\/code> \u90fd\u4f1a\u88ab\u89e6\u53d1\u3002\u8d44\u6e90\u6e05\u7406\u903b\u8f91\u653e\u5728 onCompletion<\/code> \u91cc\u5c31\u884c\u3002<\/p>\n<\/blockquote>\n\n\n\n
                              \u53e6\u5916\uff0c\u5f53\u5ba2\u6237\u7aef\u65ad\u5f00\u540e\uff0cemitter.send()<\/code> \u4f1a\u629b\u51fa IOException<\/code>\u3002\u6240\u4ee5\u63a8\u9001\u4ee3\u7801\u91cc\u8981\u505a\u597d\u5f02\u5e38\u5904\u7406\uff1a<\/p>\n\n\n\n
                              try{\n    emitter.send(SseEmitter.event().name(\"token\").data(\"{\\\"content\\\":\\\"\"+escapeJson(token)+\"\\\"}\"));}catch(IOException e){\/\/ \u5ba2\u6237\u7aef\u5df2\u65ad\u5f00\uff0c\u505c\u6b62\u7ee7\u7eed\u63a8\u9001\/\/ \u5982\u679c\u8fd8\u5728\u8c03\u7528\u5927\u6a21\u578b API\uff0c\u53ef\u4ee5\u5c1d\u8bd5\u53d6\u6d88\u8bf7\u6c42break;}<\/code><\/pre>\n\n\n\n
                              3.4 \u7ebf\u7a0b\u6c60\u7ba1\u7406<\/h4>\n\n\n\n
                              \u524d\u9762\u7684\u4ee3\u7801\u7528 new Thread()<\/code> \u6765\u542f\u52a8\u5f02\u6b65\u4efb\u52a1\uff0c\u8fd9\u5728\u751f\u4ea7\u73af\u5883\u662f\u4e0d\u53ef\u63a5\u53d7\u7684\u2014\u2014\u7ebf\u7a0b\u521b\u5efa\u9500\u6bc1\u7684\u5f00\u9500\u5927\uff0c\u4e5f\u6ca1\u6cd5\u63a7\u5236\u5e76\u53d1\u6570\u3002<\/p>\n\n\n\n
                              \n
                              \u5728 Ragent AI \u9879\u76ee\u4e2d\uff0c\u5927\u91cf\u4f7f\u7528\u4e86\u7ebf\u7a0b\u6c60\uff0c\u5982\u679c\u5927\u5bb6\u5b66\u4e60\u8fc7 oneThread \u52a8\u6001\u7ebf\u7a0b\u6c60\u9879\u76ee\uff0c\u53ef\u4ee5\u5199 1-2 \u4e2a\u4eae\u70b9\u5230 Ragent AI\uff0c\u4e24\u8005\u7ed3\u5408\u8bf4\u4e86\u5c5e\u4e8e\u662f\u3002<\/p>\n<\/blockquote>\n\n\n\n
                              \u5e94\u8be5\u7528\u4e13\u95e8\u7684\u7ebf\u7a0b\u6c60\uff1a<\/p>\n\n\n\n
                              @Configuration\npublic class ThreadPoolConfig {\n\n    \/**\n     * SSE \u63a8\u9001\u4e13\u7528\u7ebf\u7a0b\u6c60\n     * \u6ce8\u610f\uff1a\u4e0d\u8981\u7528 Tomcat \u7684\u7ebf\u7a0b\u6c60\uff0cSSE \u63a8\u9001\u662f\u957f\u8017\u65f6\u4efb\u52a1\uff0c\u4f1a\u963b\u585e Tomcat \u7ebf\u7a0b\n     *\/\n    @Bean(\"sseExecutor\")\n    public ExecutorService sseExecutor() {\n        return new ThreadPoolExecutor(\n                10,                          \/\/ \u6838\u5fc3\u7ebf\u7a0b\u6570\n                50,                          \/\/ \u6700\u5927\u7ebf\u7a0b\u6570\n                60, TimeUnit.SECONDS,        \/\/ \u7a7a\u95f2\u7ebf\u7a0b\u5b58\u6d3b\u65f6\u95f4\n                new LinkedBlockingQueue<>(100),  \/\/ \u7b49\u5f85\u961f\u5217\n                new ThreadFactory() {\n                    private final AtomicInteger counter = new AtomicInteger(1);\n                    @Override\n                    public Thread newThread(Runnable r) {\n                        Thread t = new Thread(r, \"sse-push-\" + counter.getAndIncrement());\n                        t.setDaemon(true);\n                        return t;\n                    }\n                },\n                new ThreadPoolExecutor.CallerRunsPolicy()  \/\/ \u961f\u5217\u6ee1\u65f6\u7531\u8c03\u7528\u7ebf\u7a0b\u6267\u884c\n        );\n    }\n}<\/code><\/pre>\n\n\n\n
                              Service \u91cc\u6539\u7528\u7ebf\u7a0b\u6c60\uff1a<\/p>\n\n\n\n
                              @Service\npublic class ChatService {\n\n    @Resource(name = \"sseExecutor\")\n    private ExecutorService sseExecutor;\n\n    public void streamChat(String question, SseEmitter emitter) {\n        sseExecutor.submit(() -> {\n            \/\/ \u5fc3\u8df3\u548c\u63a8\u9001\u903b\u8f91...\n        });\n    }\n}<\/code><\/pre>\n\n\n\n
                              \n
                              \u7ebf\u7a0b\u6c60\u7684\u53c2\u6570\u9700\u8981\u6839\u636e\u4f60\u7684\u5e76\u53d1\u91cf\u548c\u670d\u52a1\u5668\u914d\u7f6e\u6765\u8c03\u3002\u6838\u5fc3\u7ebf\u7a0b\u6570\u53ef\u4ee5\u53c2\u8003\u4f60\u7684\u9884\u671f\u5e76\u53d1 SSE \u8fde\u63a5\u6570\u3002CallerRunsPolicy<\/code> \u62d2\u7edd\u7b56\u7565\u610f\u5473\u7740\u961f\u5217\u6ee1\u65f6\u7531\u8c03\u7528\u7ebf\u7a0b\uff08Controller \u7ebf\u7a0b\uff09\u6267\u884c\u2014\u2014\u76f8\u5f53\u4e8e\u964d\u7ea7\u4e3a\u540c\u6b65\u5904\u7406\uff0c\u4e0d\u4f1a\u4e22\u5931\u8bf7\u6c42\u3002<\/p>\n<\/blockquote>\n\n\n\n
                              \u524d\u7aef\u600e\u4e48\u63a5\uff1aEventSource API<\/h2>\n\n\n\n
                              \u540e\u7aef\u5f00\u53d1\u9700\u8981\u77e5\u9053\u524d\u7aef\u600e\u4e48\u63a5 SSE\uff0c\u624d\u80fd\u8bbe\u8ba1\u597d\u63a5\u53e3\u3002\u8fd9\u91cc\u7b80\u8981\u4ecb\u7ecd\u524d\u7aef\u6d88\u8d39 SSE \u7684\u4e24\u79cd\u65b9\u5f0f\u3002<\/p>\n\n\n\n
                              1. \u539f\u751f EventSource \u7684\u57fa\u672c\u7528\u6cd5<\/h3>\n\n\n\n
                              \u6d4f\u89c8\u5668\u539f\u751f\u63d0\u4f9b\u4e86 EventSource<\/code> API \u6765\u6d88\u8d39 SSE\uff1a<\/p>\n\n\n\n
                              \/\/ \u521b\u5efa EventSource\uff0c\u81ea\u52a8\u53d1\u8d77 GET \u8bf7\u6c42\nconst eventSource = new EventSource('\/api\/chat\/stream?question=\u4ec0\u4e48\u662fSSE');\n\n\/\/ \u76d1\u542c\u81ea\u5b9a\u4e49\u4e8b\u4ef6\uff08\u5bf9\u5e94\u540e\u7aef SseEmitter.event().name(\"token\") \u8bbe\u7f6e\u7684\u540d\u79f0\uff09\neventSource.addEventListener('token', function(event) {\n    const data = JSON.parse(event.data);\n    document.getElementById('output').textContent += data.content;\n});\n\neventSource.addEventListener('done', function(event) {\n    console.log('\u5b8c\u6210:', event.data);\n    eventSource.close();  \/\/ \u5fc5\u987b\u624b\u52a8\u5173\u95ed\uff0c\u5426\u5219 EventSource \u4f1a\u81ea\u52a8\u91cd\u8fde\n});\n\neventSource.addEventListener('error', function(event) {\n    if (event.data) {\n        console.error('\u670d\u52a1\u7aef\u9519\u8bef:', event.data);\n    }\n    eventSource.close();\n});\n\n\/\/ \u4e5f\u53ef\u4ee5\u76d1\u542c\u9ed8\u8ba4\u7684 message \u4e8b\u4ef6\uff08event \u540d\u79f0\u4e3a \"message\" \u6216\u672a\u6307\u5b9a\u65f6\u89e6\u53d1\uff09\n\/\/ eventSource.onmessage = function(event) { ... };<\/code><\/pre>\n\n\n\n
                              \u6ce8\u610f\u8fd9\u91cc\u548c\u4e0a\u4e00\u7bc7 SSE \u534f\u8bae\u7684\u547c\u5e94\uff1a\u524d\u7aef addEventListener('token', ...)<\/code> \u91cc\u7684 'token'<\/code>\uff0c\u5c31\u662f\u540e\u7aef SseEmitter.event().name(\"token\")<\/code> \u91cc\u8bbe\u7f6e\u7684\u4e8b\u4ef6\u540d\u79f0\u3002\u6240\u4ee5\u8bbe\u8ba1\u4e8b\u4ef6\u7c7b\u578b\u65f6\uff0c\u524d\u540e\u7aef\u8981\u7ea6\u5b9a\u597d\u3002<\/p>\n\n\n\n
                              \u8fd8\u6709\u4e00\u4e2a\u91cd\u8981\u7684\u70b9\uff1aEventSource<\/code> \u5728\u8fde\u63a5\u65ad\u5f00\u540e\u4f1a\u81ea\u52a8\u91cd\u8fde<\/strong>\u3002\u5982\u679c\u4f60\u5728 done<\/code> \u4e8b\u4ef6\u91cc\u4e0d\u8c03\u7528 eventSource.close()<\/code>\uff0cEventSource<\/code> \u53d1\u73b0\u8fde\u63a5\u65ad\u4e86\u4f1a\u5c1d\u8bd5\u91cd\u65b0\u8fde\u63a5\uff0c\u5bfc\u81f4\u91cd\u590d\u8bf7\u6c42\u3002\u6536\u5230\u7ed3\u675f\u4fe1\u53f7\u540e\u4e00\u5b9a\u8981\u624b\u52a8\u5173\u95ed\u3002<\/p>\n\n\n\n
                              2. EventSource \u7684\u5c40\u9650\u548c\u66ff\u4ee3\u65b9\u6848<\/h3>\n\n\n\n
                              EventSource<\/code> \u6709\u4e24\u4e2a\u4e3b\u8981\u5c40\u9650\uff1a<\/p>\n\n\n\n
                              \u53ea\u652f\u6301 GET \u8bf7\u6c42<\/strong>\u3002\u4f60\u7684\u95ee\u9898\u6587\u672c\u53ea\u80fd\u653e\u5728 URL \u53c2\u6570\u91cc\u3002\u5982\u679c\u95ee\u9898\u5f88\u957f\uff08\u51e0\u767e\u5b57\uff09\uff0cURL \u957f\u5ea6\u53ef\u80fd\u8d85\u51fa\u9650\u5236\u3002\u66f4\u91cd\u8981\u7684\u662f\uff0c\u5982\u679c\u8bf7\u6c42\u4f53\u6bd4\u8f83\u590d\u6742\uff08\u5305\u542b\u5bf9\u8bdd\u5386\u53f2\u3001\u7cfb\u7edf\u914d\u7f6e\u7b49\uff09\uff0c\u585e\u5728 URL \u53c2\u6570\u91cc\u65e2\u4e0d\u4f18\u96c5\u4e5f\u4e0d\u5b89\u5168\u3002<\/p>\n\n\n\n
                              \u4e0d\u80fd\u81ea\u5b9a\u4e49\u8bf7\u6c42\u5934<\/strong>\u3002\u60f3\u5728\u8bf7\u6c42\u5934\u91cc\u52a0 Authorization<\/code> Token \u505a\u9274\u6743\uff1fEventSource<\/code> \u505a\u4e0d\u5230\u3002<\/p>\n\n\n\n
                              \u66ff\u4ee3\u65b9\u6848\u662f\u7528 fetch<\/code> API + ReadableStream<\/code>\uff0c\u53ef\u4ee5\u53d1 POST \u8bf7\u6c42\u3001\u81ea\u5b9a\u4e49\u8bf7\u6c42\u5934\uff1a<\/p>\n\n\n\n
                              async function streamChat(question) {\n    const response = await fetch('\/api\/chat\/stream', {\n        method: 'POST',\n        headers: {\n            'Content-Type': 'application\/json',\n            'Authorization': 'Bearer your-token',  \/\/ \u53ef\u4ee5\u81ea\u5b9a\u4e49\u8bf7\u6c42\u5934\n            'Accept': 'text\/event-stream'\n        },\n        body: JSON.stringify({ question: question })\n    });\n\n    const reader = response.body.getReader();\n    const decoder = new TextDecoder();\n    let buffer = '';\n\n    while (true) {\n        const { done, value } = await reader.read();\n        if (done) break;\n\n        buffer += decoder.decode(value, { stream: true });\n        \/\/ \u6309\u884c\u5206\u5272\uff0c\u5904\u7406 SSE \u683c\u5f0f\n        const lines = buffer.split('\\n');\n        buffer = lines.pop();  \/\/ \u6700\u540e\u4e00\u4e2a\u53ef\u80fd\u4e0d\u5b8c\u6574\uff0c\u7559\u5230\u4e0b\u4e00\u6b21\n\n        for (const line of lines) {\n            if (line.startsWith('event: ')) {\n                \/\/ \u89e3\u6790\u4e8b\u4ef6\u7c7b\u578b\n            } else if (line.startsWith('data: ')) {\n                \/\/ \u89e3\u6790\u6570\u636e\n            }\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
                              \n
                              \u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u5f88\u591a AI \u4ea7\u54c1\u7684\u524d\u7aef\u4e0d\u7528\u539f\u751f EventSource<\/code>\uff0c\u800c\u662f\u7528 fetch<\/code> \u624b\u52a8\u5904\u7406 SSE \u6d41\u2014\u2014\u56e0\u4e3a\u5bf9\u8bdd\u8bf7\u6c42\u901a\u5e38\u662f POST \u4e14\u9700\u8981\u5e26 Token\u3002\u5982\u679c\u4f60\u7684\u540e\u7aef\u7528 @PostMapping<\/code>\uff0c\u524d\u7aef\u5c31\u5fc5\u987b\u7528 fetch<\/code> \u65b9\u6848\u3002<\/p>\n<\/blockquote>\n\n\n\n
                              \u751f\u4ea7\u73af\u5883\u7684\u5173\u952e\u914d\u7f6e<\/h2>\n\n\n\n
                              1. Nginx \u53cd\u5411\u4ee3\u7406 SSE<\/h3>\n\n\n\n
                              \u8fd9\u662f\u751f\u4ea7\u73af\u5883\u6700\u5e38\u8e29\u7684\u5751<\/strong>\u3002<\/p>\n\n\n\n
                              \u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cNginx \u5f00\u542f\u4e86 proxy_buffering<\/code>\u2014\u2014\u5b83\u4f1a\u628a\u540e\u7aef\u7684\u54cd\u5e94\u6570\u636e\u7f13\u51b2\u5728\u5185\u5b58\u91cc\uff0c\u6512\u591f\u4e00\u5b9a\u91cf\uff08\u6216\u7b49\u4e00\u6bb5\u65f6\u95f4\uff09\u518d\u4e00\u6b21\u6027\u8f6c\u53d1\u7ed9\u5ba2\u6237\u7aef\u3002\u5bf9\u666e\u901a HTTP \u8bf7\u6c42\u6765\u8bf4\uff0c\u7f13\u51b2\u53ef\u4ee5\u63d0\u5347\u6027\u80fd\uff0c\u51cf\u5c11\u540e\u7aef\u538b\u529b\u3002<\/p>\n\n\n\n
                              \u4f46\u5bf9 SSE \u6765\u8bf4\uff0c\u7f13\u51b2\u662f\u81f4\u547d\u7684\u3002\u540e\u7aef emitter.send()<\/code> \u4e86\u4e00\u4e2a token\uff0cNginx \u7f13\u51b2\u4f4f\u4e86\u4e0d\u8f6c\u53d1\uff0c\u524d\u7aef\u6536\u4e0d\u5230\u6570\u636e\u3002\u7b49 Nginx \u7f13\u51b2\u533a\u6ee1\u4e86\u6216\u8005\u8d85\u65f6\u4e86\uff0c\u4e00\u5806\u6570\u636e\u624d\u4e00\u6b21\u6027\u6d8c\u8fc7\u6765\u3002\u524d\u7aef\u770b\u5230\u7684\u6548\u679c\u5c31\u662f\uff1a\u5361\u4e86\u597d\u51e0\u79d2\uff0c\u7136\u540e\"\u54d7\"\u4e00\u4e0b\u51fa\u6765\u4e00\u5927\u6bb5<\/strong>\u2014\u2014\u5b8c\u5168\u4e0d\u662f\u9010\u5b57\u8f93\u51fa\u7684\u6253\u5b57\u673a\u6548\u679c\u3002<\/p>\n\n\n\n
                              \u89e3\u51b3\u65b9\u6848\uff1a\u5728 Nginx \u7684 SSE \u63a5\u53e3\u914d\u7f6e\u4e2d\u5173\u95ed\u7f13\u51b2\u3002<\/p>\n\n\n\n
                              location \/api\/chat\/stream {\n    proxy_pass http:\/\/your-backend;\n\n    # \u5173\u952e\uff1a\u5173\u95ed\u4ee3\u7406\u7f13\u51b2\uff0c\u6570\u636e\u7acb\u5373\u8f6c\u53d1\n    proxy_buffering off;\n\n    # \u5173\u95ed\u4ee3\u7406\u7f13\u5b58\n    proxy_cache off;\n\n    # \u8bbe\u7f6e\u8db3\u591f\u957f\u7684\u8bfb\u53d6\u8d85\u65f6\uff08SSE \u662f\u957f\u8fde\u63a5\uff09\n    proxy_read_timeout 300s;\n\n    # \u786e\u4fdd\u4f7f\u7528 HTTP\/1.1 \u957f\u8fde\u63a5\n    proxy_http_version 1.1;\n    proxy_set_header Connection '';\n\n    # \u5f00\u542f chunked \u4f20\u8f93\u7f16\u7801\n    chunked_transfer_encoding on;\n\n    # \u544a\u8bc9 Nginx \u4e0d\u8981\u7f13\u51b2 SSE \u54cd\u5e94\n    # \u6709\u4e9b Nginx \u7248\u672c\u5373\u4f7f\u5173\u4e86 proxy_buffering\uff0c\u4e5f\u9700\u8981\u8fd9\u4e2a\u5934\n    proxy_set_header X-Accel-Buffering no;\n}<\/code><\/pre>\n\n\n\n
                              \u6bcf\u4e2a\u914d\u7f6e\u9879\u7684\u4f5c\u7528\uff1a<\/p>\n\n\n\n
                              \u914d\u7f6e\u9879<\/th>\u4f5c\u7528<\/th>\u4e0d\u914d\u7684\u540e\u679c<\/th><\/tr>
                              proxy_buffering off<\/code><\/td>\u5173\u95ed\u4ee3\u7406\u7f13\u51b2\uff0c\u540e\u7aef\u6570\u636e\u7acb\u5373\u8f6c\u53d1<\/td>\u6570\u636e\u88ab\u7f13\u51b2\uff0c\u524d\u7aef\u6536\u4e0d\u5230\u5b9e\u65f6\u63a8\u9001<\/td><\/tr>
                              proxy_cache off<\/code><\/td>\u5173\u95ed\u4ee3\u7406\u7f13\u5b58<\/td>SSE \u54cd\u5e94\u53ef\u80fd\u88ab\u7f13\u5b58\uff0c\u8fd4\u56de\u8fc7\u671f\u6570\u636e<\/td><\/tr>
                              proxy_read_timeout 300s<\/code><\/td>\u8bfb\u53d6\u8d85\u65f6\u8bbe\u4e3a 5 \u5206\u949f<\/td>\u9ed8\u8ba4 60 \u79d2\uff0c\u957f\u6587\u672c\u751f\u6210\u53ef\u80fd\u8d85\u65f6\u65ad\u5f00<\/td><\/tr>
                              proxy_http_version 1.1<\/code><\/td>\u4f7f\u7528 HTTP\/1.1<\/td>HTTP\/1.0 \u4e0d\u652f\u6301\u957f\u8fde\u63a5<\/td><\/tr>
                              proxy_set_header Connection ''<\/code><\/td>\u6e05\u9664 Connection \u5934<\/td>\u53ef\u80fd\u5bfc\u81f4\u8fde\u63a5\u88ab\u63d0\u524d\u5173\u95ed<\/td><\/tr>
                              X-Accel-Buffering no<\/code><\/td>\u989d\u5916\u7684\u7f13\u51b2\u5173\u95ed\u6307\u4ee4<\/td>\u67d0\u4e9b\u573a\u666f\u4e0b proxy_buffering off \u4e0d\u751f\u6548<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                              \u4f60\u4e5f\u53ef\u4ee5\u5728 Spring Boot \u4fa7\u901a\u8fc7\u54cd\u5e94\u5934\u6765\u5173\u95ed\u7f13\u51b2\uff1a<\/p>\n\n\n\n
                              @GetMapping(\"\/stream\")publicSseEmitterstream(@RequestParamString question,HttpServletResponse response){\/\/ \u544a\u8bc9 Nginx \u4e0d\u8981\u7f13\u51b2\u8fd9\u4e2a\u54cd\u5e94\n    response.setHeader(\"X-Accel-Buffering\",\"no\");\n    response.setHeader(\"Cache-Control\",\"no-cache\");SseEmitter emitter =newSseEmitter(180_000L);\/\/ ...return emitter;}<\/code><\/pre>\n\n\n\n
                              \n
                              proxy_buffering off<\/code> \u548c X-Accel-Buffering: no<\/code> \u6700\u597d\u90fd\u914d\u4e0a\u3002\u6709\u4e9b Nginx \u7248\u672c\u6216\u914d\u7f6e\u573a\u666f\u4e0b\uff0c\u53ea\u914d\u4e00\u4e2a\u53ef\u80fd\u4e0d\u751f\u6548\u3002\u53cc\u91cd\u4fdd\u9669\u603b\u6ca1\u9519\u3002<\/p>\n<\/blockquote>\n\n\n\n
                              2. \u8fde\u63a5\u6570\u4e0e\u7ebf\u7a0b\u6c60<\/h3>\n\n\n\n
                              SSE \u662f\u957f\u8fde\u63a5\uff0c\u6bcf\u4e2a\u6d3b\u8dc3\u7684 SSE \u8fde\u63a5\u5728\u540e\u7aef\u5360\u7528\u7684\u8d44\u6e90\u5305\u62ec\uff1a<\/p>\n\n\n\n
                                \n
                              • \u4e00\u4e2a SseEmitter<\/code> \u5bf9\u8c61\uff08\u5185\u5b58\uff09<\/li>\n\n\n\n
                              • \u4e00\u4e2a SSE \u63a8\u9001\u7ebf\u7a0b\uff08\u7ebf\u7a0b\u6c60\uff09<\/li>\n\n\n\n
                              • \u4e00\u4e2a\u5230\u5927\u6a21\u578b API \u7684 HTTP \u8fde\u63a5\uff08OkHttp \u8fde\u63a5\u6c60\uff09<\/li>\n\n\n\n
                              • Tomcat \u7684\u4e00\u4e2a NIO \u8fde\u63a5<\/li>\n<\/ul>\n\n\n\n
                                SseEmitter<\/code> \u672c\u8eab\u662f\u5f02\u6b65\u7684\uff0cController \u7ebf\u7a0b\u7acb\u5373\u8fd4\u56de\uff0c\u4e0d\u5360 Tomcat \u7ebf\u7a0b\u6c60<\/strong>\u3002\u4f46\u5b83\u5360\u7528 Tomcat \u7684 NIO \u8fde\u63a5\u6570\u3002Tomcat \u7684 max-connections<\/code> \u9ed8\u8ba4 8192\uff0c\u901a\u5e38\u591f\u7528\u3002\u771f\u6b63\u7684\u74f6\u9888\u5f80\u5f80\u5728\u63a8\u9001\u7ebf\u7a0b\u6c60\u548c\u5927\u6a21\u578b API \u7684\u5e76\u53d1\u9650\u5236\u4e0a\u3002<\/p>\n\n\n\n
                                \u7ebf\u7a0b\u6c60\u7684\u914d\u7f6e\u5efa\u8bae\uff1a<\/p>\n\n\n\n
                                \u53c2\u6570<\/th>\u5efa\u8bae\u503c<\/th>\u8bf4\u660e<\/th><\/tr>
                                \u6838\u5fc3\u7ebf\u7a0b\u6570<\/td>10~20<\/td>\u8986\u76d6\u6b63\u5e38\u5e76\u53d1\u91cf<\/td><\/tr>
                                \u6700\u5927\u7ebf\u7a0b\u6570<\/td>50~100<\/td>\u8986\u76d6\u5cf0\u503c<\/td><\/tr>
                                \u961f\u5217\u5bb9\u91cf<\/td>100~200<\/td>\u8d85\u8fc7\u7684\u8bf7\u6c42\u7b49\u5f85\u6216\u964d\u7ea7<\/td><\/tr>
                                \u62d2\u7edd\u7b56\u7565<\/td>CallerRunsPolicy<\/code><\/td>\u961f\u5217\u6ee1\u65f6\u964d\u7ea7\u4e3a\u540c\u6b65\uff0c\u4e0d\u4e22\u5931\u8bf7\u6c42<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                                \u8fd8\u6709\u4e00\u4e2a\u5bb9\u6613\u5ffd\u7565\u7684\u70b9\uff1a\u8c03\u7528\u5927\u6a21\u578b API \u7684 OkHttpClient \u5e94\u8be5\u662f\u5168\u5c40\u5355\u4f8b<\/strong>\uff0c\u4e0d\u8981\u6bcf\u6b21\u8bf7\u6c42\u90fd new OkHttpClient()<\/code>\u3002OkHttpClient \u5185\u90e8\u7ef4\u62a4\u4e86\u8fde\u63a5\u6c60\u548c\u7ebf\u7a0b\u6c60\uff0c\u6bcf\u6b21 new \u90fd\u4f1a\u521b\u5efa\u65b0\u7684\u8fde\u63a5\u6c60\uff0c\u8fde\u63a5\u65e0\u6cd5\u590d\u7528\uff0c\u8d44\u6e90\u6d6a\u8d39\u4e25\u91cd\u3002<\/p>\n\n\n\n
                                3. \u5185\u5b58\u6cc4\u6f0f\u9632\u8303<\/h3>\n\n\n\n
                                SseEmitter<\/code> \u5bf9\u8c61\u5728\u8fde\u63a5\u671f\u95f4\u4e00\u76f4\u88ab Spring \u6301\u6709\u3002\u5982\u679c\u8fde\u63a5\u5f02\u5e38\u65ad\u5f00\u4f46 SseEmitter<\/code> \u6ca1\u6709\u88ab complete()<\/code>\uff0c\u5b83\u4f1a\u4e00\u76f4\u7559\u5728\u5185\u5b58\u91cc\u76f4\u5230\u8d85\u65f6\u3002<\/p>\n\n\n\n
                                \u9632\u8303\u63aa\u65bd\uff1a<\/p>\n\n\n\n
                                  \n
                                1. 1.\u8bbe\u7f6e\u5408\u7406\u7684\u8d85\u65f6\u65f6\u95f4<\/strong>\uff1a\u4e0d\u8981\u8bbe 0<\/code>\uff08\u8868\u793a\u6c38\u4e0d\u8d85\u65f6\uff09\u2014\u2014\u5982\u679c\u5ba2\u6237\u7aef\u65ad\u5f00\u800c\u4f60\u6ca1\u611f\u77e5\u5230\uff0c\u8fd9\u4e2a SseEmitter<\/code> \u5c31\u6c38\u8fdc\u4e0d\u4f1a\u88ab\u6e05\u7406\u3002\u5efa\u8bae 3~5 \u5206\u949f<\/li>\n\n\n\n
                                2. 2.onCompletion<\/code> \u56de\u8c03\u91cc\u6e05\u7406\u8d44\u6e90<\/strong>\uff1a\u505c\u6b62\u5fc3\u8df3\u5b9a\u65f6\u4efb\u52a1\u3001\u8bb0\u5f55\u65e5\u5fd7<\/li>\n\n\n\n
                                3. 3.\u5b9a\u671f\u5de1\u68c0\u8fde\u63a5\u6c60<\/strong>\uff1a\u867d\u7136 onCompletion<\/code> \u56de\u8c03\u5e94\u8be5\u80fd\u8986\u76d6\u6240\u6709\u6e05\u7406\u573a\u666f\uff0c\u4f46\u4f5c\u4e3a\u515c\u5e95\uff0c\u53ef\u4ee5\u7528\u4e00\u4e2a\u5b9a\u65f6\u4efb\u52a1\u6bcf\u5206\u949f\u68c0\u67e5\u4e00\u4e0b\u8fde\u63a5\u6c60\uff0c\u6e05\u7406\u8d85\u8fc7\u8d85\u65f6\u65f6\u95f4\u8fd8\u5b58\u5728\u7684\u8fde\u63a5<\/li>\n<\/ol>\n\n\n\n
                                  4. \u8d1f\u8f7d\u5747\u8861\u6ce8\u610f\u4e8b\u9879<\/h3>\n\n\n\n
                                  \u5982\u679c\u4f60\u7684 Spring Boot \u670d\u52a1\u505a\u4e86\u591a\u5b9e\u4f8b\u90e8\u7f72 + \u8f6e\u8be2\u8d1f\u8f7d\u5747\u8861\uff0cSSE \u957f\u8fde\u63a5\u4f1a\u5e26\u6765\u4e00\u4e2a\u95ee\u9898\uff1a<\/p>\n\n\n\n
                                  SSE \u662f\u4e00\u4e2a\u6301\u7eed\u7684 HTTP \u8fde\u63a5\u3002\u8fde\u63a5\u5efa\u7acb\u540e\uff0c\u6240\u6709\u7684 send()<\/code> \u6570\u636e\u90fd\u5fc5\u987b\u901a\u8fc7\u540c\u4e00\u4e2a\u540e\u7aef\u5b9e\u4f8b<\/strong>\u63a8\u9001\u3002\u5982\u679c\u4e2d\u95f4\u8d1f\u8f7d\u5747\u8861\u5668\u628a\u8fde\u63a5\u5207\u5230\u4e86\u53e6\u4e00\u4e2a\u5b9e\u4f8b\uff0c\u6570\u636e\u5c31\u4e22\u4e86\u3002<\/p>\n\n\n\n
                                  \u5bf9\u4e8e SSE \u573a\u666f\uff0c\u6709\u4e24\u79cd\u5904\u7406\u65b9\u5f0f\uff1a<\/p>\n\n\n\n
                                    \n
                                  • Sticky Session\uff08\u4f1a\u8bdd\u7c98\u6ede\uff09<\/strong>\uff1a\u914d\u7f6e\u8d1f\u8f7d\u5747\u8861\u5668\uff0c\u8ba9\u540c\u4e00\u4e2a\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u59cb\u7ec8\u6253\u5230\u540c\u4e00\u4e2a\u540e\u7aef\u5b9e\u4f8b\u3002Nginx \u53ef\u4ee5\u7528 ip_hash<\/code> \u6216 sticky cookie<\/code> \u5b9e\u73b0<\/li>\n\n\n\n
                                  • \u65e0\u72b6\u6001\u8bbe\u8ba1<\/strong>\uff1aSSE \u8fde\u63a5\u672c\u8eab\u662f\u6709\u72b6\u6001\u7684\uff08\u7ed1\u5b9a\u5728\u67d0\u4e2a\u5b9e\u4f8b\u4e0a\uff09\uff0c\u4f46\u4e1a\u52a1\u903b\u8f91\u505a\u6210\u65e0\u72b6\u6001\u7684\u2014\u2014\u5bf9\u8bdd\u5386\u53f2\u5b58\u5728 Redis\/MySQL \u800c\u4e0d\u662f\u5185\u5b58\u91cc\uff0c\u4efb\u4f55\u5b9e\u4f8b\u90fd\u80fd\u5904\u7406<\/li>\n<\/ul>\n\n\n\n
                                    \u5b9e\u9645\u4e0a\uff0c\u5bf9\u4e8e\u5927\u6a21\u578b\u6d41\u5f0f\u8f6c\u53d1\u8fd9\u4e2a\u573a\u666f\uff0cSSE \u8fde\u63a5\u53ea\u5728\u4e00\u6b21\u5bf9\u8bdd\u7684\u751f\u6210\u8fc7\u7a0b\u4e2d\u5b58\u5728\uff08\u51e0\u79d2\u5230\u51e0\u5341\u79d2\uff09\uff0c\u751f\u6210\u5b8c\u5c31\u65ad\u5f00\u4e86\u3002\u53ea\u8981\u8d1f\u8f7d\u5747\u8861\u5668\u4e0d\u5728\u4e00\u6b21 SSE \u8fde\u63a5\u4e2d\u95f4\u5207\u6362\u540e\u7aef\u5b9e\u4f8b\uff08Nginx \u7684\u9ed8\u8ba4\u884c\u4e3a\u4e0d\u4f1a\u8fd9\u4e48\u505a\uff09\uff0c\u5c31\u4e0d\u9700\u8981\u7279\u6b8a\u914d\u7f6e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                                    SSE\u534f\u8bae\u4e0e\u6d41\u5f0f\u54cd\u5e94 SSE \u534f\u8bae\uff1a\u4e0d\u53ea\u662f data: \u5f00\u5934\u7684\u6587\u672c 1. SSE \u662f\u4ec0\u4e48 SSE \u5168\u79f0 Server-Sent E …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-1924","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts\/1924","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1924"}],"version-history":[{"count":2,"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts\/1924\/revisions"}],"predecessor-version":[{"id":1926,"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts\/1924\/revisions\/1926"}],"wp:attachment":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1924"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1924"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1924"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}