RAG\u68c0\u7d22\u589e\u5f3a\u751f\u6210<\/strong><\/h1>\n\n\n\n\u5148\u67e5\u8d44\u6599\uff0c\u518d\u56de\u7b54\uff0c<\/p>\n\n\n\n
\n- 1.\u628a\u516c\u53f8\u7684\u4ea7\u54c1\u6587\u6863\u6570\u636e\u5b58\u5230\u4e00\u4e2a\u80fd\u7406\u89e3\u8bed\u4e49\u7684\u77e5\u8bc6\u5e93\u91cc\uff1b<\/li>\n\n\n\n
- 2.\u7528\u6237\u63d0\u95ee\u65f6\uff0c\u5148\u4ece\u77e5\u8bc6\u5e93\u68c0\u7d22\u76f8\u5173\u5185\u5bb9\uff1b<\/li>\n\n\n\n
- 3.\u628a\u68c0\u7d22\u5230\u7684\u5185\u5bb9\u548c\u7528\u6237\u95ee\u9898\u4e00\u8d77\u53d1\u7ed9\u5927\u6a21\u578b\uff1b<\/li>\n\n\n\n
- 4.\u5927\u6a21\u578b\u57fa\u4e8e\u8fd9\u4e9b\u53c2\u8003\u8d44\u6599\u6765\u56de\u7b54\u3002<\/li>\n<\/ul>\n\n\n\n
![\"\"](\"https:\/\/eve2333.top\/wp-content\/uploads\/2026\/03\/1774773130-image-1024x315.png\")
<\/figure>\n\n\n\n\u5168\u94fe\u8def\u56fe\uff1aingest \u2192 chunk \u2192 embed \u2192 index \u2192 retrieve \u2192 answer<\/code>\u3002<\/p>\n\n\n\nIngest\uff1a\u628a\u6570\u636e\u5bfc\u8fdb\u6765<\/h4>\n\n\n\n
\u4e0d\u540c\u683c\u5f0f\u7528\u4e0d\u540c\u7684\u89e3\u6790\u65b9\u5f0f\uff1aPDF \u8981\u63d0\u53d6\u6587\u5b57\uff0cWord \u8981\u8bfb\u53d6\u5185\u5bb9\uff0c\u7f51\u9875\u8981\u722c\u53d6\u5e76\u6e05\u6d17\u3002<\/p>\n\n\n\n
Chunk\uff1a\u628a\u957f\u6587\u6863\u5207\u6210\u5c0f\u5757<\/h4>\n\n\n\n
\u5e38\u89c1\u505a\u6cd5\u662f 500-1000 \u5b57\u4e00\u5757\uff0c\u76f8\u90bb\u5757\u4e4b\u95f4\u6709\u4e00\u5b9a\u91cd\u53e0\uff08\u6bd4\u5982\u91cd\u53e0 100 \u5b57\uff09\uff0c\u9632\u6b62\u91cd\u8981\u4fe1\u606f\u6b63\u597d\u88ab\u5207\u65ad\u3002<\/p>\n\n\n\n
Embed\uff1a\u628a\u6587\u5b57\u53d8\u6210\u5411\u91cf<\/h4>\n\n\n\n
\u8fd9\u6b65\u662f\u6574\u4e2a RAG \u7684\u6838\u5fc3\u3002\u628a\u6587\u5b57\u8f6c\u6210\u5411\u91cf\u3002<\/p>\n\n\n\n
\u5411\u91cf\u5c31\u662f\u4e00\u4e32\u6570\u5b57\uff0c\u6bd4\u5982 [0.23, -0.45, 0.67, ...]<\/code>\u3002\u8fd9\u4e32\u6570\u5b57\u7f16\u7801\u4e86\u8fd9\u6bb5\u6587\u5b57\u7684\u8bed\u4e49\u4fe1\u606f\uff0c\u610f\u601d\u76f8\u8fd1\u7684\u6587\u5b57\uff0c\u5411\u91cf\u5728\u7a7a\u95f4\u4e2d\u7684\u8ddd\u79bb\u4e5f\u8fd1\u3002<\/p>\n\n\n\n\u8fd9\u4e2a\u8f6c\u6362\u7531\u4e13\u95e8\u7684 Embedding \u6a21\u578b\u5b8c\u6210\uff0c\u6bd4\u5982 Qwen3 \u7684 Qwen3-Embedding-8B\uff0c\u6216\u8005\u5f00\u6e90\u7684 bge\u3001m3e\u3002<\/p>\n\n\n\n
Index\uff1a\u5b58\u8fdb\u5411\u91cf\u6570\u636e\u5e93<\/h4>\n\n\n\n
\u5411\u91cf\u6570\u636e\u5e93\u4e13\u95e8\u5b58\u5411\u91cf\uff0c\u505a\u76f8\u4f3c\u5ea6\u641c\u7d22\u2014\u2014\u7ed9\u4e00\u4e2a\u5411\u91cf\uff0c\u627e\u51fa\u8ddd\u79bb\u6700\u8fd1\u7684 N \u4e2a\u3002<\/p>\n\n\n\n
\u5e38\u89c1\u7684\u5411\u91cf\u6570\u636e\u5e93\u6709 Milvus<\/code>\u3001Pinecone<\/code>\u3001Weaviate<\/code>\uff0c\u8f7b\u91cf\u7ea7\u7684\u6709 Faiss<\/code>\u3001Chroma<\/code>\u3002<\/p>\n\n\n\n\n\u4ee5 Milvus<\/strong> \u4f5c\u4e3a\u793a\u4f8b\u5de5\u5177\u8fdb\u884c\u8bb2\u89e3\u4e0e\u6f14\u793a\u3002<\/p>\n<\/blockquote>\n\n\n\n\u5b58\u7684\u65f6\u5019\uff0c\u5411\u91cf\u548c\u539f\u6587\u8981\u4e00\u8d77\u5b58\u3002\u540e\u9762\u68c0\u7d22\u51fa\u6765\uff0c\u5f97\u628a\u539f\u6587\u62ff\u7ed9\u5927\u6a21\u578b\u770b\u3002\u540c\u65f6\u8fd8\u8981\u6709\u5143\u6570\u636e\uff08\u7b80\u5355\u7406\u89e3\u662f\u4e2a JSON\uff09\u7684\u6982\u5ff5\uff0c\u65b9\u4fbf\u68c0\u7d22\u65f6\u8fdb\u884c\u7b5b\u9009\u7cbe\u51c6\u6570\u636e\u3002<\/p>\n\n\n\n
Retrieve\uff1a\u68c0\u7d22\u76f8\u5173\u5185\u5bb9<\/h4>\n\n\n\n
\u7528\u6237\u63d0\u95ee\u4e86\uff0c\u6bd4\u5982\"\u6253\u5370\u673a\u58a8\u76d2\u600e\u4e48\u6362\"\u3002<\/p>\n\n\n\n
\u8fd9\u65f6\u5019\u505a\u4e24\u4ef6\u4e8b\uff1a<\/p>\n\n\n\n
\n- 1.\u628a\u7528\u6237\u95ee\u9898\u4e5f\u8f6c\u6210\u5411\u91cf\uff1b<\/li>\n\n\n\n
- 2.\u62ff\u8fd9\u4e2a\u5411\u91cf\u53bb\u5411\u91cf\u6570\u636e\u5e93\u641c\uff0c\u627e\u51fa\u6700\u76f8\u4f3c\u7684\u51e0\u4e2a\u6587\u6863\u5757\u3002<\/li>\n<\/ol>\n\n\n\n
Answer\uff1a\u5927\u6a21\u578b\u751f\u6210\u56de\u7b54<\/h4>\n\n\n\n
\u6700\u540e\u4e00\u6b65\uff0c\u628a\u68c0\u7d22\u5230\u7684\u5185\u5bb9\u548c\u7528\u6237\u95ee\u9898\u6253\u5305\u53d1\u7ed9\u5927\u6a21\u578b\u3002<\/p>\n\n\n\n
\u5927\u6a21\u578b\u770b\u5230\u8fd9\u4e9b\u8d44\u6599\uff0c\u5c31\u80fd\u7ed9\u51fa\u51c6\u786e\u7684\u56de\u7b54\uff0c\u800c\u4e0d\u662f\u81ea\u5df1\u7f16\u3002<\/p>\n\n\n\n\u9636\u6bb5<\/th> \u6b65\u9aa4<\/th> \u505a\u4ec0\u4e48<\/th><\/tr> \u51c6\u5907\u9636\u6bb5\uff08\u79bb\u7ebf\uff09<\/td> Ingest<\/td> \u5bfc\u5165\u539f\u59cb\u6587\u6863<\/td><\/tr> <\/td> Chunk<\/td> \u5207\u6210\u5c0f\u5757<\/td><\/tr> <\/td> Embed<\/td> \u8f6c\u6210\u5411\u91cf<\/td><\/tr> <\/td> Index<\/td> \u5b58\u8fdb\u5411\u91cf\u6570\u636e\u5e93<\/td><\/tr> \u8fd0\u884c\u9636\u6bb5\uff08\u5728\u7ebf\uff09<\/td> Retrieve<\/td> \u68c0\u7d22\u76f8\u5173\u6587\u6863<\/td><\/tr> <\/td> Answer<\/td> \u5927\u6a21\u578b\u751f\u6210\u56de\u7b54<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u4f18\u70b9\uff1a\u76f8\u5bf9\u5fae\u8c03\u6210\u672c\u4f4e\uff0c\u4e0a\u624b\u5feb<\/strong>\uff0c\u77e5\u8bc6\u66f4\u65b0\u65b9\u4fbf<\/strong>\uff0c\u7b54\u6848\u53ef\u8ffd\u6eaf<\/strong><\/p>\n\n\n\n\u7f3a\u70b9\uff1a\u6548\u679c\u770b\u77e5\u8bc6\u5e93\u8d28\u91cf<\/strong>\uff0c\u94fe\u5f0f\u7cfb\u7edf\u590d\u6742<\/strong>\uff0c\u68c0\u7d22\u6bd4\u8f83\u8017\u65f6<\/strong><\/p>\n\n\n\n\u4f46\u662frag\u975e\u5e38\u9ebb\u70e6\u554a\uff0c<\/p>\n\n\n\n
\u7528Apache Tika\u89e3\u6790\u6587\u6863<\/h1>\n\n\n\n
\u540c\u6837\u662f .pdf<\/code> \u540e\u7f00\uff0c\u5185\u90e8\u7ed3\u6784\u53ef\u80fd\u5b8c\u5168\u4e0d\u540c\uff1a<\/strong><\/p>\n\n\n\n\n- \u6587\u5b57\u578b PDF<\/strong>\uff1a\u5185\u90e8\u5b58\u50a8\u7684\u662f\u6587\u5b57\u7f16\u7801\uff0c\u53ef\u4ee5\u76f4\u63a5\u63d0\u53d6\u3002<\/li>\n\n\n\n
- \u626b\u63cf\u578b PDF<\/strong>\uff1a\u5185\u90e8\u5b58\u50a8\u7684\u662f\u56fe\u7247\uff0c\u6587\u5b57\u53ea\u662f\u201c\u753b\u201d\u4e0a\u53bb\u7684\u3002<\/li>\n\n\n\n
- \u6df7\u5408\u578b PDF<\/strong>\uff1a\u90e8\u5206\u9875\u662f\u6587\u5b57\uff0c\u90e8\u5206\u9875\u662f\u626b\u63cf\u56fe\u3002<\/li>\n<\/ul>\n\n\n\n
\u4e00\u4efd .docx<\/code> \u6587\u4ef6\uff0c\u6253\u5f00\u770b\u8d77\u6765\u5c31\u662f\u51e0\u6bb5\u6587\u5b57\u3002\u8868\u683c\u88ab\u62c6\u6210\u4e86\u83ab\u540d\u5176\u5999\u7684\u6362\u884c\u3002\u9875\u7709\u9875\u811a\u6df7\u8fdb\u4e86\u6b63\u6587\uff0c\u591a\u4f59\u7684\u7a7a\u884c\u548c\u7a7a\u683c\u3002\u6587\u6863\u5c5e\u6027\uff08\u4f5c\u8005\u3001\u521b\u5efa\u65f6\u95f4\uff09\u4f60\u6839\u672c\u6ca1\u62ff\u5230\u3002\u4f60\u5728\u5b66\u6821\u62ffword\u5199\u8bba\u6587\u4e5f\u662f\u8fd9\u6837\u7684<\/p>\n\n\n\n\u8fd8\u6709\u6545\u610f\u6df7\u6dc6\u7684\u7f16\u7801\u95ee\u9898\uff0c\u4e2d\u6587\u4e71\u7801\u7f16\u7801\u95ee\u9898<\/p>\n\n\n\n
\u4f60\u9700\u8981\u4e00\u4e2a\u5de5\u5177\uff1a<\/p>\n\n\n\n
\n- \u80fd\u81ea\u52a8\u8bc6\u522b\u6587\u4ef6\u7684\u771f\u5b9e\u7c7b\u578b\uff08\u4e0d\u9760\u540e\u7f00\uff09<\/li>\n\n\n\n
- \u80fd\u5904\u7406\u51e0\u5341\u79cd\u6587\u6863\u683c\u5f0f\uff08PDF\u3001Word\u3001PPT\u3001Excel\u3001HTML\u3001\u90ae\u4ef6...\uff09<\/li>\n\n\n\n
- \u80fd\u63d0\u53d6\u6587\u672c\u5185\u5bb9\u3002<\/li>\n\n\n\n
- \u80fd\u63d0\u53d6\u5143\u6570\u636e\uff08\u4f5c\u8005\u3001\u521b\u5efa\u65f6\u95f4\u3001\u6807\u9898...\uff09<\/li>\n\n\n\n
- \u80fd\u5904\u7406\u7f16\u7801\u95ee\u9898\u3002<\/li>\n\n\n\n
- \u80fd\u5bf9\u63a5 OCR\uff08\u5904\u7406\u626b\u63cf\u4ef6\uff09<\/li>\n\n\n\n
- \u6700\u597d\u662f\u5f00\u6e90\u514d\u8d39\u7684\u3002<\/li>\n<\/ul>\n\n\n\n
\u8fd9\u4e2a\u5de5\u5177\u5c31\u662f Apache Tika\u3002<\/strong>\u4e13\u95e8\u7528\u4e8e\u5185\u5bb9\u68c0\u6d4b\u548c\u5185\u5bb9\u63d0\u53d6<\/strong>\uff0c\u652f\u6301 1000+ \u79cd MIME \u7c7b\u578b<\/strong><\/p>\n\n\n\n\u5143\u6570\u636e\uff08Metadata\uff09\u662f\u201c\u5173\u4e8e\u6570\u636e\u7684\u6570\u636e\u201d\uff0c\u63cf\u8ff0\u6587\u6863\u672c\u8eab\u7684\u5c5e\u6027\u3002<\/p>\n\n\n\n
\u5e38\u89c1\u7684\u5143\u6570\u636e\uff1a<\/p>\n\n\n\n\u5b57\u6bb5<\/th> \u8bf4\u660e<\/th> \u793a\u4f8b<\/th><\/tr> Content-Type<\/code><\/td>MIME \u7c7b\u578b<\/td> application\/pdf<\/code><\/td><\/tr>title<\/code><\/td>\u6587\u6863\u6807\u9898<\/td> 2024\u5e74\u5ea6\u62a5\u544a<\/td><\/tr> creator<\/code><\/td>\u4f5c\u8005\/\u521b\u5efa\u8005<\/td> \u5f20\u4e09<\/td><\/tr> created<\/code><\/td>\u521b\u5efa\u65f6\u95f4<\/td> 2024-01-15T10:30:00<\/td><\/tr> modified<\/code><\/td>\u4fee\u6539\u65f6\u95f4<\/td> 2024-03-20T14:00:00<\/td><\/tr> pageCount<\/code><\/td>\u9875\u6570<\/td> 15<\/td><\/tr> wordCount<\/code><\/td>\u5b57\u6570<\/td> 5000<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u6dfb\u52a0 Tika \u4f9d\u8d56\uff0c\u5728 pom.xml<\/code> \u4e2d\u6dfb\u52a0\uff1a<\/p>\n\n\n\n <dependencies>\n <!-- Spring Boot Web -->\n <dependency>\n <groupId>org.springframework.boot<\/groupId>\n <artifactId>spring-boot-starter-web<\/artifactId>\n <\/dependency>\n\n <!-- Apache Tika \u6838\u5fc3 -->\n <dependency>\n <groupId>org.apache.tika<\/groupId>\n <artifactId>tika-core<\/artifactId>\n <version>${tika.version}<\/version>\n <\/dependency>\n\n <!-- Apache Tika \u89e3\u6790\u5668\uff08\u5305\u542b\u5404\u79cd\u683c\u5f0f\u652f\u6301\uff09 -->\n <dependency>\n <groupId>org.apache.tika<\/groupId>\n <artifactId>tika-parsers-standard-package<\/artifactId>\n <version>${tika.version}<\/version>\n <\/dependency>\n <\/dependencies><\/code><\/pre>\n\n\n\nTika \u9009\u62e9\u5d4c\u5165\u5f0f\u8fd8\u662f\u72ec\u7acb\u90e8\u7f72\u8fd0\u884c<\/h2>\n\n\n\n
\u66f4\u9002\u5408\u5d4c\u5165\u5f0f\u7684\u573a\u666f\uff1a<\/p>\n\n\n\n
\n- \u8bfe\u7a0b\/\u4f5c\u4e1a\/\u5c0f\u9879\u76ee\uff1a\u5c31\u4e00\u4e2a Spring Boot \u670d\u52a1\uff0c\u4e0a\u4f20\u4e00\u4e9b doc\/pdf\uff0c\u89c4\u6a21\u4e0d\u5927<\/li>\n\n\n\n
- \u90e8\u7f72\u73af\u5883\u7b80\u5355\uff1a\u4e0d\u60f3\u591a\u7ef4\u62a4\u4e00\u4e2a\u5bb9\u5668\u670d\u52a1<\/li>\n\n\n\n
- \u89e3\u6790\u91cf\u4e0d\u9ad8\uff1a\u5076\u5c14\u89e3\u6790\u3001\u6587\u4ef6\u4e0d\u5927\u3001\u5e76\u53d1\u4f4e<\/li>\n<\/ul>\n\n\n\n
\u66f4\u9002\u5408 Tika Server \u72ec\u7acb\u90e8\u7f72\u7684\u573a\u666f\uff1a<\/p>\n\n\n\n
\n- \u4f60\u5728\u505a \u77e5\u8bc6\u5e93\u5165\u5e93\/RAG \u6570\u636e\u51c6\u5907<\/strong>\uff1a\u5927\u91cf\u6587\u4ef6\u3001\u6279\u5904\u7406\u3001\u5e76\u53d1\u9ad8<\/li>\n\n\n\n
- \u6587\u4ef6\u6765\u6e90\u66f4\u201c\u91ce\u201d\uff1a\u5404\u79cd PDF\uff08\u542b\u626b\u63cf\u4ef6\uff09\u3001\u5404\u79cd Office\u3001\u5404\u79cd\u7f16\u7801<\/li>\n\n\n\n
- \u4f60\u5e0c\u671b\u89e3\u6790\u5931\u8d25\/\u5361\u6b7b\u4e0d\u5f71\u54cd\u4e3b\u4e1a\u52a1\uff1a\u628a\u89e3\u6790\u4ece\u4e1a\u52a1\u8fdb\u7a0b\u5265\u79bb<\/strong><\/li>\n\n\n\n
- \u4f60\u6709\u591a\u79cd\u8bed\u8a00\/\u591a\u4e2a\u670d\u52a1\u8981\u590d\u7528\u540c\u4e00\u5957\u89e3\u6790\u80fd\u529b<\/li>\n<\/ul>\n\n\n\n
\u7ef4\u5ea6<\/th> \u5d4c\u5165 Spring Boot\uff08\u4f9d\u8d56\u5e93\uff09<\/th> \u5355\u72ec\u90e8\u7f72\uff08Tika Server\uff09<\/th><\/tr> \u4e0a\u624b\u6210\u672c<\/td> \u2705 \u6700\u5feb\uff1a\u52a0\u4f9d\u8d56\u5199\u4ee3\u7801\u5c31\u80fd\u8dd1<\/td> \u26a0\ufe0f \u591a\u4e00\u6b65\uff1a\u8d77\u5bb9\u5668 + \u914d\u670d\u52a1\u5730\u5740<\/td><\/tr> \u4f9d\u8d56\/\u4f53\u79ef<\/td> \u26a0\ufe0f \u4f9d\u8d56\u6811\u5927\uff0cfat jar \u53d8\u5927\uff1b\u53ef\u80fd\u9047\u5230\u4f9d\u8d56\u51b2\u7a81<\/td> \u2705 \u4f9d\u8d56\u90fd\u5728\u5bb9\u5668\u91cc\uff0c\u5e94\u7528\u66f4\u201c\u5e72\u51c0\u201d<\/td><\/tr> OCR\/\u7cfb\u7edf\u4f9d\u8d56<\/td> \u26a0\ufe0f OCR\u3001\u5b57\u4f53\u3001\u56fe\u50cf\u5e93\u7b49\u53ef\u80fd\u9700\u8981\u88c5\u7cfb\u7edf\u5305\uff0c\u73af\u5883\u5dee\u5f02\u591a<\/td> \u2705 \u955c\u50cf\u901a\u5e38\u628a OCR \u7b49\u6253\u5305\u597d\u4e86\uff0c\u73af\u5883\u4e00\u81f4<\/td><\/tr> \u8d44\u6e90\u9694\u79bb\uff08CPU\/\u5185\u5b58\uff09<\/td> \u26a0\ufe0f \u89e3\u6790\u5927\u6587\u4ef6\u5f88\u5403\u5185\u5b58\/CPU\uff0c\u53ef\u80fd\u62d6\u6162\u751a\u81f3\u6253\u6302\u4f60\u7684\u4e1a\u52a1\u8fdb\u7a0b<\/td> \u2705 \u89e3\u6790\u5403\u8d44\u6e90\u5728\u5bb9\u5668\u91cc\uff1bTika \u6302\u4e86\u4e1a\u52a1\u4e0d\u4e00\u5b9a\u8ddf\u7740\u6302\uff08\u53ef\u91cd\u542f\/\u9650\u989d\uff09<\/td><\/tr> \u5b89\u5168\u9694\u79bb\uff08\u4e0d\u53ef\u4fe1\u6587\u4ef6\uff09<\/td> \u26a0\ufe0f \u98ce\u9669\u76f4\u63a5\u8fdb\u4f60\u7684\u4e1a\u52a1 JVM<\/td> \u2705 \u89e3\u6790\u201c\u5371\u9669\u9762\u201d\u9694\u79bb\u5230\u72ec\u7acb\u670d\u52a1\u66f4\u5408\u7406\uff1b\u4f46\u4ecd\u8981\u505a\u7248\u672c\u5347\u7ea7\/\u9650\u5236\u7b56\u7565<\/td><\/tr> \u6269\u5c55\u6027<\/td> \u26a0\ufe0f \u6bcf\u4e2a\u4e1a\u52a1\u5b9e\u4f8b\u90fd\u8981\u5e26\u4e00\u4efd\u89e3\u6790\u80fd\u529b\uff0c\u6a2a\u5411\u6269\u5c55\u6210\u672c\u9ad8<\/td> \u2705 \u591a\u4e2a\u4e1a\u52a1\u5171\u4eab\u4e00\u7ec4 Tika\uff1b\u53ef\u4ee5\u5355\u72ec\u6c34\u5e73\u6269\u5bb9<\/td><\/tr> \u6027\u80fd<\/td> \u2705 \u5c11\u4e00\u6b21\u7f51\u7edc\u4f20\u8f93\uff0c\u5ef6\u8fdf\u66f4\u4f4e<\/td> \u26a0\ufe0f \u591a\u4e00\u6b21 HTTP \u4f20\u8f93\uff08\u4f46\u5c40\u57df\u7f51\u4e00\u822c\u53ef\u63a5\u53d7\uff09\uff1b\u541e\u5410\u53ef\u9760\u6269\u5bb9\u8865<\/td><\/tr> \u591a\u8bed\u8a00\/\u591a\u9879\u76ee\u590d\u7528<\/td> \u26a0\ufe0f \u4e3b\u8981\u670d\u52a1\u4e8e Java \u9879\u76ee<\/td> \u2705 \u4efb\u610f\u8bed\u8a00\u90fd\u80fd HTTP \u8c03\uff0c\u590d\u7528\u6027\u5f3a<\/td><\/tr> \u8fd0\u7ef4\u590d\u6742\u5ea6<\/td> \u2705 \u5c11\u4e00\u4e2a\u7ec4\u4ef6<\/td> \u26a0\ufe0f \u591a\u4e00\u4e2a\u7ec4\u4ef6\uff08\u76d1\u63a7\u3001\u65e5\u5fd7\u3001\u9650\u6d41\u3001\u9274\u6743\u7b49\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u7f16\u5199\u6587\u6863\u89e3\u6790\u670d\u52a1<\/h3>\n\n\n\n2.1 \u521b\u5efa\u89e3\u6790\u7ed3\u679c DTO<\/h4>\n\n\n\n\/**\n * \u6587\u6863\u89e3\u6790\u7ed3\u679c\n *\/@Setter@GetterpublicclassParseResult{\/**\n * \u662f\u5426\u89e3\u6790\u6210\u529f\n *\/privateboolean success;\/**\n * \u68c0\u6d4b\u5230\u7684 MIME \u7c7b\u578b\n *\/privateString mimeType;\/**\n * \u63d0\u53d6\u7684\u6587\u672c\u5185\u5bb9\n *\/privateString content;\/**\n * \u63d0\u53d6\u7684\u5143\u6570\u636e\n *\/privateMap<String, String> metadata;\/**\n * \u6587\u672c\u957f\u5ea6\uff08\u5b57\u7b26\u6570\uff09\n *\/privateint contentLength;\/**\n * \u9519\u8bef\u4fe1\u606f\uff08\u5982\u679c\u5931\u8d25\uff09\n *\/privateString errorMessage;\/\/ \u9759\u6001\u5de5\u5382\u65b9\u6cd5publicstaticParseResultsuccess(String mimeType,String content,Map<String, String> metadata){ParseResult result =newParseResult();\n result.setSuccess(true);\n result.setMimeType(mimeType);\n result.setContent(content);\n result.setContentLength(content !=null? content.length():0);\n result.setMetadata(metadata);return result;}publicstaticParseResultfailure(String errorMessage){ParseResult result =newParseResult();\n result.setSuccess(false);\n result.setErrorMessage(errorMessage);return result;}}<\/code><\/pre>\n\n\n\n2.2 \u521b\u5efa Tika \u89e3\u6790\u670d\u52a1<\/h4>\n\n\n\n@Slf4j@ServicepublicclassTikaParseService{\/**\n * Tika \u5b9e\u4f8b\uff08\u7528\u4e8e\u7b80\u5355\u64cd\u4f5c\uff0c\u5982 MIME \u68c0\u6d4b\uff09\n *\/privatefinalTika tika =newTika();\/**\n * \u81ea\u52a8\u68c0\u6d4b\u89e3\u6790\u5668\n *\/privatefinalParser parser =newAutoDetectParser();\/**\n * \u6700\u5927\u6587\u672c\u957f\u5ea6\u9650\u5236\uff08-1 \u8868\u793a\u65e0\u9650\u5236\uff0c\u4f46\u53ef\u80fd\u5bfc\u81f4\u5185\u5b58\u95ee\u9898\uff09\n * \u8fd9\u91cc\u8bbe\u7f6e\u4e3a 10MB \u5b57\u7b26\n *\/privatestaticfinalintMAX_TEXT_LENGTH=10*1024*1024;\/**\n * \u89e3\u6790\u6587\u4ef6\uff0c\u63d0\u53d6\u6587\u672c\u548c\u5143\u6570\u636e\n *\n * @param file \u4e0a\u4f20\u7684\u6587\u4ef6\n * @return \u89e3\u6790\u7ed3\u679c\n *\/publicParseResultparseFile(MultipartFile file){\/\/ 1. \u57fa\u672c\u6821\u9a8cif(file ==null|| file.isEmpty()){returnParseResult.failure(\"\u6587\u4ef6\u4e3a\u7a7a\");}String originalFilename = file.getOriginalFilename();\n log.info(\"\u5f00\u59cb\u89e3\u6790\u6587\u4ef6: {}, \u5927\u5c0f: {} bytes\", originalFilename, file.getSize());try(InputStream inputStream = file.getInputStream()){\/\/ 2. \u68c0\u6d4b MIME \u7c7b\u578b\/\/ \u6ce8\u610f\uff1a\u8fd9\u91cc\u9700\u8981\u91cd\u65b0\u83b7\u53d6\u6d41\uff0c\u56e0\u4e3a\u68c0\u6d4b\u4f1a\u6d88\u8d39\u6d41String mimeType;try(InputStream detectStream = file.getInputStream()){\n mimeType = tika.detect(detectStream, originalFilename);}\n log.info(\"\u68c0\u6d4b\u5230 MIME \u7c7b\u578b: {}\", mimeType);\/\/ 3. \u51c6\u5907\u89e3\u6790\u5668\u7ec4\u4ef6\/\/ BodyContentHandler: \u7528\u4e8e\u63a5\u6536\u89e3\u6790\u51fa\u7684\u6587\u672c\u5185\u5bb9\/\/ \u53c2\u6570 MAX_TEXT_LENGTH \u9650\u5236\u6700\u5927\u6587\u672c\u957f\u5ea6\uff0c\u9632\u6b62\u5185\u5b58\u6ea2\u51faBodyContentHandler handler =newBodyContentHandler(MAX_TEXT_LENGTH);\/\/ Metadata: \u7528\u4e8e\u5b58\u50a8\u5143\u6570\u636eMetadata metadata =newMetadata();\/\/ \u8bbe\u7f6e\u6587\u4ef6\u540d\uff0c\u5e2e\u52a9\u89e3\u6790\u5668\u8bc6\u522b\n metadata.set(TikaCoreProperties.RESOURCE_NAME_KEY, originalFilename);\/\/ ParseContext: \u89e3\u6790\u4e0a\u4e0b\u6587\uff0c\u53ef\u4ee5\u914d\u7f6e\u989d\u5916\u9009\u9879ParseContext context =newParseContext();\/\/ 4. \u6267\u884c\u89e3\u6790try(InputStream parseStream = file.getInputStream()){\n parser.parse(parseStream, handler, metadata, context);}\/\/ 5. \u83b7\u53d6\u89e3\u6790\u7ed3\u679cString content = handler.toString();\/\/ 6. \u6e05\u6d17\u6587\u672c\uff08\u53bb\u9664\u591a\u4f59\u7a7a\u767d\uff09\n content =cleanText(content);\/\/ 7. \u63d0\u53d6\u5143\u6570\u636eMap<String, String> metadataMap =extractMetadata(metadata);\/\/ 8. \u68c0\u67e5\u89e3\u6790\u8d28\u91cfif(content.isEmpty()){\n log.warn(\"\u6587\u4ef6 {} \u89e3\u6790\u7ed3\u679c\u4e3a\u7a7a\uff0c\u53ef\u80fd\u662f\u626b\u63cf\u4ef6\u6216\u52a0\u5bc6\u6587\u6863\", originalFilename);returnParseResult.failure(\"\u89e3\u6790\u7ed3\u679c\u4e3a\u7a7a\uff0c\u53ef\u80fd\u662f\u626b\u63cf\u4ef6\u6216\u52a0\u5bc6\u6587\u6863\");}\n\n log.info(\"\u6587\u4ef6 {} \u89e3\u6790\u6210\u529f\uff0c\u63d0\u53d6\u6587\u672c\u957f\u5ea6: {}\", originalFilename, content.length());returnParseResult.success(mimeType, content, metadataMap);}catch(IOException e){\n log.error(\"\u8bfb\u53d6\u6587\u4ef6\u5931\u8d25: {}\", originalFilename, e);returnParseResult.failure(\"\u8bfb\u53d6\u6587\u4ef6\u5931\u8d25: \"+ e.getMessage());}catch(TikaException e){\n log.error(\"Tika \u89e3\u6790\u5931\u8d25: {}\", originalFilename, e);returnParseResult.failure(\"\u6587\u6863\u89e3\u6790\u5931\u8d25: \"+ e.getMessage());}catch(SAXException e){\n log.error(\"XML \u89e3\u6790\u5931\u8d25: {}\", originalFilename, e);returnParseResult.failure(\"\u6587\u6863\u7ed3\u6784\u89e3\u6790\u5931\u8d25: \"+ e.getMessage());}catch(Exception e){\n log.error(\"\u672a\u77e5\u9519\u8bef: {}\", originalFilename, e);returnParseResult.failure(\"\u89e3\u6790\u8fc7\u7a0b\u4e2d\u53d1\u751f\u672a\u77e5\u9519\u8bef: \"+ e.getMessage());}}\/**\n * \u4ec5\u68c0\u6d4b\u6587\u4ef6\u7684 MIME \u7c7b\u578b\n *\n * @param file \u4e0a\u4f20\u7684\u6587\u4ef6\n * @return MIME \u7c7b\u578b\u5b57\u7b26\u4e32\n *\/publicStringdetectMimeType(MultipartFile file)throwsIOException{try(InputStream inputStream = file.getInputStream()){return tika.detect(inputStream, file.getOriginalFilename());}}\/**\n * \u6e05\u6d17\u6587\u672c\u5185\u5bb9\n * - \u5c06\u591a\u4e2a\u8fde\u7eed\u7a7a\u767d\u5b57\u7b26\u66ff\u6362\u4e3a\u5355\u4e2a\u7a7a\u683c\n * - \u5c06\u591a\u4e2a\u8fde\u7eed\u6362\u884c\u66ff\u6362\u4e3a\u6700\u591a\u4e24\u4e2a\u6362\u884c\uff08\u4fdd\u7559\u6bb5\u843d\uff09\n * - \u53bb\u9664\u9996\u5c3e\u7a7a\u767d\n *\/privateStringcleanText(String text){if(text ==null){return\"\";}return text\n \/\/ \u5c06 \\r\\n \u7edf\u4e00\u4e3a \\n.replaceAll(\"\\\\r\\\\n\",\"\\n\")\/\/ \u5c06 \\r \u7edf\u4e00\u4e3a \\n.replaceAll(\"\\\\r\",\"\\n\")\/\/ \u53bb\u9664\u6bcf\u884c\u9996\u5c3e\u7684\u7a7a\u683c.replaceAll(\"(?m)^[ \\\\t]+|[ \\\\t]+$\",\"\")\/\/ \u5c06 3 \u4e2a\u53ca\u4ee5\u4e0a\u8fde\u7eed\u6362\u884c\u66ff\u6362\u4e3a 2 \u4e2a\u6362\u884c.replaceAll(\"\\\\n{3,}\",\"\\n\\n\")\/\/ \u5c06\u591a\u4e2a\u8fde\u7eed\u7a7a\u683c\/\u5236\u8868\u7b26\u66ff\u6362\u4e3a\u5355\u4e2a\u7a7a\u683c.replaceAll(\"[ \\\\t]+\",\" \")\/\/ \u53bb\u9664\u9996\u5c3e\u7a7a\u767d.trim();}\/**\n * \u4ece Metadata \u5bf9\u8c61\u63d0\u53d6\u5143\u6570\u636e\u4e3a Map\n *\/privateMap<String, String>extractMetadata(Metadata metadata){Map<String, String> result =newHashMap<>();for(String name : metadata.names()){String value = metadata.get(name);if(value !=null&&!value.isEmpty()){\n result.put(name, value);}}return result;}}<\/code><\/pre>\n\n\n\n2.2.1 \u6838\u5fc3\u4ee3\u7801\u89e3\u91ca<\/h5>\n\n\n\n
BodyContentHandler<\/strong>\uff1a<\/p>\n\n\n\nBodyContentHandler handler =newBodyContentHandler(MAX_TEXT_LENGTH);<\/code><\/pre>\n\n\n\n\u8fd9\u662f Tika \u7684 SAX \u5185\u5bb9\u5904\u7406\u5668\uff0c\u8d1f\u8d23\u63a5\u6536\u89e3\u6790\u5668\u8f93\u51fa\u7684\u6587\u672c\u3002\u53c2\u6570\u662f\u6700\u5927\u5b57\u7b26\u6570\u9650\u5236\uff0c\u8d85\u8fc7\u4f1a\u629b\u51fa\u5f02\u5e38\u3002\u8bbe\u4e3a -1<\/code> \u8868\u793a\u65e0\u9650\u5236\uff08\u5371\u9669\uff0c\u53ef\u80fd OOM\uff09\u3002<\/p>\n\n\n\nMetadata<\/strong>\uff1a<\/p>\n\n\n\nMetadata metadata =newMetadata();\nmetadata.set(TikaCoreProperties.RESOURCE_NAME_KEY, originalFilename);<\/code><\/pre>\n\n\n\nMetadata<\/code> \u5bf9\u8c61\u4f1a\u5728\u89e3\u6790\u8fc7\u7a0b\u4e2d\u88ab\u586b\u5145\u3002\u63d0\u524d\u8bbe\u7f6e\u6587\u4ef6\u540d\u53ef\u4ee5\u5e2e\u52a9\u89e3\u6790\u5668\u505a\u66f4\u51c6\u786e\u7684\u5224\u65ad\u3002<\/p>\n\n\n\nAutoDetectParser<\/strong>\uff1a<\/p>\n\n\n\nParser parser =newAutoDetectParser();\nparser.parse(inputStream, handler, metadata, context);<\/code><\/pre>\n\n\n\nAutoDetectParser<\/code> \u4f1a\u81ea\u52a8\u6839\u636e MIME \u7c7b\u578b\u9009\u62e9\u5408\u9002\u7684\u5e95\u5c42\u89e3\u6790\u5668\uff08PDF \u7528 PDFParser\uff0cWord \u7528 OOXMLParser \u7b49\uff09\u3002<\/p>\n\n\n\n2.3 \u521b\u5efa Controller<\/h4>\n\n\n\n@RestController@RequestMapping(\"\/api\/document\")publicclassDocumentController{@AutowiredprivateTikaParseService tikaParseService;\/**\n * \u89e3\u6790\u4e0a\u4f20\u7684\u6587\u6863\uff0c\u8fd4\u56de\u6587\u672c\u548c\u5143\u6570\u636e\n *\n * POST \/api\/document\/parse\n * Content-Type: multipart\/form-data\n *\/@PostMapping(value =\"\/parse\", consumes =MediaType.MULTIPART_FORM_DATA_VALUE)publicResponseEntity<ParseResult>parseDocument(@RequestParam(\"file\")MultipartFile file){ParseResult result = tikaParseService.parseFile(file);if(result.isSuccess()){returnResponseEntity.ok(result);}else{returnResponseEntity.badRequest().body(result);}}\/**\n * \u4ec5\u68c0\u6d4b\u6587\u4ef6\u7684 MIME \u7c7b\u578b\n *\n * POST \/api\/document\/detect\n * Content-Type: multipart\/form-data\n *\/@PostMapping(value =\"\/detect\", consumes =MediaType.MULTIPART_FORM_DATA_VALUE)publicResponseEntity<Map<String, String>>detectMimeType(@RequestParam(\"file\")MultipartFile file){try{String mimeType = tikaParseService.detectMimeType(file);Map<String, String> response =newHashMap<>();\n response.put(\"filename\", file.getOriginalFilename());\n response.put(\"mimeType\", mimeType);\n response.put(\"size\",String.valueOf(file.getSize()));returnResponseEntity.ok(response);}catch(IOException e){Map<String, String> error =newHashMap<>();\n error.put(\"error\",\"\u65e0\u6cd5\u68c0\u6d4b\u6587\u4ef6\u7c7b\u578b: \"+ e.getMessage());returnResponseEntity.badRequest().body(error);}}}<\/code><\/pre>\n\n\n\n2.4 \u914d\u7f6e\u6587\u4ef6\u4e0a\u4f20\u9650\u5236<\/h4>\n\n\n\n
\u5728 src\/main\/resources\/application.yml<\/code> \u4e2d\uff1a<\/p>\n\n\n\nspring:application:name: tika-demo\n\n servlet:multipart:# \u5355\u4e2a\u6587\u4ef6\u6700\u5927\u5927\u5c0fmax-file-size: 50MB\n # \u6574\u4e2a\u8bf7\u6c42\u6700\u5927\u5927\u5c0fmax-request-size: 50MB\n\nserver:port:8080<\/code><\/pre>\n\n\n\n2.5 \u4e3b\u542f\u52a8\u7c7b<\/h4>\n\n\n\n@SpringBootApplicationpublicclassTika3xApplication{publicstaticvoidmain(String[] args){SpringApplication.run(Tika3xApplication.class, args);}}<\/code><\/pre>\n\n\n\n3. \u9a8c\u8bc1\u4e0e\u6d4b\u8bd5<\/h3>\n\n\n\n3.1 \u4f7f\u7528 curl \u6d4b\u8bd5<\/h4>\n\n\n\n
\u6d4b\u8bd5 MIME \u68c0\u6d4b\uff1a<\/strong><\/p>\n\n\n\n# \u521b\u5efa\u4e00\u4e2a\u6d4b\u8bd5\u6587\u4ef6\necho \"Hello World\"> test.txt\n\n# \u68c0\u6d4b\u7c7b\u578b\ncurl -XPOST \\\n -F\"file=@test.txt\" \\\n http://localhost:8080\/api\/document\/detect<\/code><\/pre>\n\n\n\n\u8f93\u51fa\uff1a<\/p>\n\n\n\n
{\"filename\":\"test.txt\",\"mimeType\":\"text\/plain\",\"size\":\"12\"}<\/code><\/pre>\n\n\n\n\u6d4b\u8bd5\u6587\u6863\u89e3\u6790\uff1a<\/strong><\/p>\n\n\n\n# \u89e3\u6790\u6587\u672c\u6587\u4ef6\ncurl -XPOST \\\n -F\"file=@test.txt\" \\\n http://localhost:8080\/api\/document\/parse<\/code><\/pre>\n\n\n\n\u8f93\u51fa\uff1a<\/p>\n\n\n\n
{\"success\":true,\"mimeType\":\"text\/plain\",\"content\":\"Hello World\",\"metadata\":{\"X-TIKA:Parsed-By\":\"org.apache.tika.parser.DefaultParser\",\"X-TIKA:Parsed-By-Full-Set\":\"org.apache.tika.parser.DefaultParser\",\"Content-Encoding\":\"ISO-8859-1\",\"resourceName\":\"test.txt\",\"X-TIKA:detectedEncoding\":\"ISO-8859-1\",\"X-TIKA:encodingDetector\":\"UniversalEncodingDetector\",\"Content-Type\":\"text\/plain; charset=ISO-8859-1\"},\"contentLength\":11,\"errorMessage\":null}<\/code><\/pre>\n\n\n\n\u6d4b\u8bd5\u89e3\u6790 PDF\uff08\u5982\u679c\u4f60\u6709\u7684\u8bdd\uff09\uff1a<\/strong><\/p>\n\n\n\ncurl -XPOST \\\n -F\"file=@your-document.pdf\" \\\n http://localhost:8080\/api\/document\/parse<\/code><\/pre>\n\n\n\n3.2 \u4f7f\u7528 Postman \u6216 ApiFox \u6d4b\u8bd5<\/h4>\n\n\n\n\n- 1.\u6253\u5f00 API \u6d4b\u8bd5\u5de5\u5177\uff0c\u521b\u5efa\u65b0\u8bf7\u6c42<\/li>\n\n\n\n
- 2.\u65b9\u6cd5\u9009\u62e9
POST<\/code><\/li>\n\n\n\n- 3.URL \u8f93\u5165
http:\/\/localhost:8080\/api\/document\/parse<\/code><\/li>\n\n\n\n- 4.\u9009\u62e9
Body<\/code> \u2192 form-data<\/code><\/li>\n\n\n\n- 5.Key \u8f93\u5165
file<\/code>\uff0c\u7c7b\u578b\u9009\u62e9 File<\/code><\/li>\n\n\n\n- 6.Value \u9009\u62e9\u4f60\u8981\u4e0a\u4f20\u7684\u6587\u4ef6<\/li>\n\n\n\n
- 7.\u70b9\u51fb
Send<\/code><\/li>\n<\/ol>\n\n\n\n\u6570\u636e\u5206\u5757Chunk\u7b56\u7565<\/h1>\n\n\n\n
\u7531\u4e8e\u5927\u6a21\u578b\u7684\u4e0a\u4e0b\u6587\u7a97\u53e3\u9650\u5236\uff0c\u68c0\u7d22\u7cbe\u5ea6\u7684\u95ee\u9898\uff0c\u6211\u4eec\u63a5\u4e0b\u6765\u8981\u5206\u5757\uff0c\u7eaf\u6587\u672c\u53ea\u662f\u539f\u6750\u6599\uff0c\u8fd8\u4e0d\u80fd\u76f4\u63a5\u7528\u4e8e\u68c0\u7d22\u3002\u5206\u5757\u662f\u7d27\u63a5\u7740\u6587\u672c\u63d0\u53d6\u4e4b\u540e\u7684\u4e00\u6b65\uff0c\u5b83\u628a\u957f\u6587\u672c\u5207\u6210\u9002\u5408\u68c0\u7d22\u7684\u5c0f\u6bb5\u3002\u628a\u6bcf\u4e2a\u6587\u672c\u5757\u8f6c\u6210\u4e00\u7ec4\u6570\u5b57\uff08\u5411\u91cf\uff09\uff0c\u65b9\u4fbf\u8ba1\u7b97\u673a\u505a\u76f8\u4f3c\u5ea6\u68c0\u7d22\u3002<\/p>\n\n\n\n
\u51e0\u4e2a\u5173\u952e\u53c2\u6570\uff1achunkSize\u3001overlap<\/h3>\n\n\n\n
\u5728\u52a8\u624b\u5207\u4e4b\u524d\uff0c\u6709\u4e24\u4e2a\u53c2\u6570\u4f60\u5fc5\u987b\u641e\u6e05\u695a\uff1achunkSize<\/code>\uff08\u5757\u5927\u5c0f\uff09\u548c overlap<\/code>\uff08\u91cd\u53e0\u91cf\uff09\u3002<\/p>\n\n\n\nchunkSize \u5c31\u662f\u6bcf\u4e2a\u5757\u7684\u957f\u5ea6\u4e0a\u9650\u3002\u6bd4\u5982\u4f60\u8bbe chunkSize = 200\uff0c\u610f\u601d\u662f\u6bcf\u4e2a\u5757\u6700\u591a\u5305\u542b 200 \u4e2a\u5b57\u7b26\uff0c\u6ca1\u6709\u6807\u51c6\u7b54\u6848<\/p>\n\n\n\n
overlap\uff08\u91cd\u53e0\uff09\u662f\u6307\u76f8\u90bb\u4e24\u4e2a\u5757\u4e4b\u95f4\u5171\u4eab\u7684\u6587\u672c\u957f\u5ea6\u3002\u5e2e\u4f60\u4fdd\u6301\u4e86\u4e0a\u4e0b\u6587\u7684\u8fde\u8d2f\u6027\u3002\u4e0d\u52a0 overlap\uff0c\u76f8\u90bb\u5757\u7684\u8fb9\u754c\u5904\u4e00\u5b9a\u4f1a\u4e22\u5931\u4e0a\u4e0b\u6587\u3002\u5982\u679c\u7528\u6237\u6070\u597d\u95ee\u7684\u95ee\u9898\u6d89\u53ca\u5230\u8fb9\u754c\u5904\u7684\u5185\u5bb9\uff0c\u68c0\u7d22\u5c31\u53ef\u80fd\u627e\u4e0d\u5230\u5b8c\u6574\u7684\u7b54\u6848\u3002<\/p>\n\n\n\n
1. \u56fa\u5b9a\u5927\u5c0f\u5206\u5757\uff08Fixed Size Chunking\uff09<\/h3>\n\n\n\n1.1 \u539f\u7406<\/h4>\n\n\n\n
\u8fd9\u662f\u6700\u7b80\u5355\u7c97\u66b4\u7684\u65b9\u5f0f\uff1a\u4e0d\u7ba1\u6587\u672c\u5185\u5bb9\u662f\u4ec0\u4e48\uff0c\u6bcf\u9694\u56fa\u5b9a\u6570\u91cf\u7684\u5b57\u7b26\u5c31\u5207\u4e00\u5200\u3002<\/p>\n\n\n\n
\u5047\u8bbe chunkSize = 100\uff0coverlap = 0\uff0c\u4e0a\u9762\u90a3\u6bb5\u793a\u4f8b\u6587\u672c\u4f1a\u88ab100\u4e2a\u5b57\u7684\u5207<\/p>\n\n\n\n
\u4f18\u7f3a\u70b9<\/h4>\n\n\n\n\u7ef4\u5ea6<\/th> \u8bf4\u660e<\/th><\/tr> \u4f18\u70b9<\/td> \u5b9e\u73b0\u6781\u5176\u7b80\u5355\uff0c\u6027\u80fd\u597d\uff0c\u4e0d\u9700\u8981\u4efb\u4f55 NLP \u5904\u7406<\/td><\/tr> \u7f3a\u70b9<\/td> \u5b8c\u5168\u5ffd\u7565\u6587\u672c\u7ed3\u6784\uff0c\u5bb9\u6613\u628a\u53e5\u5b50\u3001\u6bb5\u843d\u4ece\u4e2d\u95f4\u5207\u65ad\uff0c\u5bfc\u81f4\u8bed\u4e49\u4e0d\u5b8c\u6574<\/td><\/tr> \u9002\u5408<\/td> \u6587\u672c\u7ed3\u6784\u4e0d\u91cd\u8981\u7684\u573a\u666f\uff0c\u6bd4\u5982\u65e5\u5fd7\u6587\u4ef6\u3001\u7eaf\u6570\u636e\u6587\u672c\uff1b\u6216\u8005\u4f5c\u4e3a\u5176\u4ed6\u7b56\u7565\u7684\u515c\u5e95\u65b9\u6848<\/td><\/tr> \u4e0d\u9002\u5408<\/td> \u6709\u660e\u786e\u6bb5\u843d\u7ed3\u6784\u7684\u6587\u6863\uff08\u77e5\u8bc6\u5e93\u3001\u4ea7\u54c1\u624b\u518c\u3001\u653f\u7b56\u6587\u4ef6\uff09\uff0c\u56e0\u4e3a\u5207\u65ad\u8bed\u4e49\u4f1a\u4e25\u91cd\u5f71\u54cd\u68c0\u7d22\u8d28\u91cf<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n2. \u91cd\u53e0\u5206\u5757\uff08Overlapping Chunking\uff09<\/h3>\n\n\n\n
\u91cd\u53e0\u5206\u5757\u662f\u5bf9\u56fa\u5b9a\u5927\u5c0f\u5206\u5757\u7684\u76f4\u63a5\u6539\u8fdb\u3002\u6838\u5fc3\u601d\u8def\u5f88\u7b80\u5355\uff1a\u5207\u5757\u7684\u65f6\u5019\uff0c\u76f8\u90bb\u4e24\u4e2a\u5757\u4e4b\u95f4\u7559\u4e00\u6bb5\u91cd\u53e0\u533a\u57df\uff0c\u8fd9\u6837\u5373\u4f7f\u5207\u5272\u70b9\u843d\u5728\u53e5\u5b50\u4e2d\u95f4\uff0c\u91cd\u53e0\u90e8\u5206\u4e5f\u80fd\u4fdd\u8bc1\u5173\u952e\u4fe1\u606f\u4e0d\u4f1a\u88ab\u5b8c\u5168\u5207\u65ad\u3002<\/p>\n\n\n\n\u7ef4\u5ea6<\/th> \u8bf4\u660e<\/th><\/tr> \u4f18\u70b9<\/td> \u5b9e\u73b0\u7b80\u5355\uff0c\u6709\u6548\u7f13\u89e3\u8fb9\u754c\u5904\u7684\u8bed\u4e49\u65ad\u88c2\u95ee\u9898<\/td><\/tr> \u7f3a\u70b9<\/td> \u4ecd\u7136\u4e0d\u770b\u6587\u672c\u5185\u5bb9\uff0c\u53ea\u662f\u7528\u91cd\u53e0\u6765\u5f25\u8865\uff1boverlap \u4f1a\u5bfc\u81f4\u5b58\u50a8\u91cf\u589e\u52a0<\/td><\/tr> \u9002\u5408<\/td> \u5927\u591a\u6570\u901a\u7528\u573a\u666f\u7684\u5165\u95e8\u65b9\u6848\uff0c\u5c24\u5176\u662f\u4f60\u8fd8\u6ca1\u786e\u5b9a\u7528\u4ec0\u4e48\u7b56\u7565\u7684\u65f6\u5019<\/td><\/tr> \u4e0d\u9002\u5408<\/td> \u5bf9\u8bed\u4e49\u5b8c\u6574\u6027\u8981\u6c42\u5f88\u9ad8\u7684\u573a\u666f\uff0c\u6bd4\u5982\u6cd5\u5f8b\u6761\u6b3e\u3001\u5408\u540c\u6587\u672c<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u9012\u5f52\u5206\u5757\uff08Recursive Chunking\uff09<\/h3>\n\n\n\n
\u9012\u5f52\u5206\u5757\u662f\u76ee\u524d\u5b9e\u8df5\u4e2d\u6700\u5e38\u7528\u7684\u7b56\u7565\u3002\u5b83\u7684\u601d\u8def\u53ef\u4ee5\u7528\u4e00\u53e5\u8bdd\u6982\u62ec\uff1a\u5148\u5c1d\u8bd5\u7528\u6700\u5927\u7684\u5206\u9694\u7b26\u5207\uff0c\u5207\u5b8c\u5982\u679c\u67d0\u4e2a\u5757\u8fd8\u662f\u592a\u5927\uff0c\u5c31\u6362\u4e00\u4e2a\u66f4\u5c0f\u7684\u5206\u9694\u7b26\u7ee7\u7eed\u5207\uff0c\u76f4\u5230\u6240\u6709\u5757\u90fd\u5728 chunkSize \u4ee5\u5185\u3002<\/p>\n\n\n\n
\u5177\u4f53\u6765\u8bf4\uff0c\u5b83\u7ef4\u62a4\u4e00\u4e2a\u5206\u9694\u7b26\u5217\u8868\uff0c\u6309\u4f18\u5148\u7ea7\u4ece\u9ad8\u5230\u4f4e\u6392\u5217\uff0c\u6bd4\u5982\uff1a<\/p>\n\n\n\n
[\"\\n\\n\", \"\\n\", \"\u3002\", \"\uff0c\", \" \", \"\"]<\/code><\/pre>\n\n\n\n![\"\"](\"https:\/\/eve2333.top\/wp-content\/uploads\/2026\/03\/1774792343-image.png\")
<\/figure>\n\n\n\n\u8fd9\u4e2a\u5148\u7c97\u540e\u7ec6\u7684\u8fc7\u7a0b\u5c31\u662f\u9012\u5f52\u7684\u542b\u4e49\u2014\u2014\u4e0d\u662f\u4e00\u5200\u5207\u5230\u5e95\uff0c\u800c\u662f\u9010\u5c42\u7ec6\u5316\u3002<\/p>\n\n\n\n
\u4e3a\u4ec0\u4e48\u8fd9\u79cd\u65b9\u5f0f\u597d\uff1f\u56e0\u4e3a\u5b83\u5c3d\u6700\u5927\u52aa\u529b\u4fdd\u7559\u6587\u672c\u7684\u7ed3\u6784\u3002\u80fd\u6309\u6bb5\u843d\u5207\u5c31\u6309\u6bb5\u843d\u5207\uff0c\u6bb5\u843d\u592a\u957f\u4e86\u624d\u6309\u53e5\u5b50\u5207\uff0c\u53e5\u5b50\u8fd8\u592a\u957f\u624d\u6309\u9017\u53f7\u5207\u2026\u2026\u53ea\u6709\u5728\u4e07\u4e0d\u5f97\u5df2\u7684\u65f6\u5019\u624d\u4f1a\u50cf\u56fa\u5b9a\u5927\u5c0f\u5206\u5757\u90a3\u6837\u6309\u5b57\u7b26\u786c\u5207\u3002<\/p>\n\n\n\n
\u62ff\u6211\u4eec\u7684\u7535\u5546\u77e5\u8bc6\u5e93\u6765\u8bf4\uff0c\u5982\u679c chunkSize \u8bbe\u6210 200\uff0c\u9012\u5f52\u5206\u5757\u4f1a\u5148\u5c1d\u8bd5\u6309\u7ae0\u8282\uff08\u7a7a\u884c\uff09\u5207\u5272\u3002\u9000\u8d27\u653f\u7b56\u90a3\u4e00\u6bb5\u5927\u7ea6 150 \u5b57\uff0c\u6ca1\u8d85\u8fc7 200\uff0c\u5c31\u5b8c\u6574\u4fdd\u7559\u4e3a\u4e00\u4e2a\u5757\u3002\u5982\u679c\u67d0\u4e2a\u7ae0\u8282\u7279\u522b\u957f\u8d85\u8fc7\u4e86 200 \u5b57\uff0c\u624d\u4f1a\u8fdb\u4e00\u6b65\u6309\u53e5\u53f7\u5207\u6210\u66f4\u5c0f\u7684\u5757\u3002<\/p>\n\n\n\n\u7ef4\u5ea6<\/th> \u8bf4\u660e<\/th><\/tr> \u4f18\u70b9<\/td> \u517c\u987e\u4e86\u8bed\u4e49\u5b8c\u6574\u6027\u548c\u5757\u5927\u5c0f\u63a7\u5236\uff0c\u662f\u76ee\u524d\u6700\u901a\u7528\u7684\u5206\u5757\u7b56\u7565<\/td><\/tr> \u7f3a\u70b9<\/td> \u5206\u9694\u7b26\u5217\u8868\u9700\u8981\u6839\u636e\u8bed\u8a00\u8c03\u6574\uff08\u4e2d\u6587\u548c\u82f1\u6587\u7684\u6807\u70b9\u4e0d\u540c\uff09\uff1b\u4f9d\u8d56\u6587\u672c\u4e2d\u5b58\u5728\u5408\u7406\u7684\u5206\u9694\u7b26<\/td><\/tr> \u9002\u5408<\/td> \u7edd\u5927\u591a\u6570\u573a\u666f\uff0c\u5c24\u5176\u662f\u4f60\u4e0d\u786e\u5b9a\u8be5\u7528\u4ec0\u4e48\u7b56\u7565\u7684\u65f6\u5019\uff0c\u9012\u5f52\u5206\u5757\u662f\u6700\u5b89\u5168\u7684\u9ed8\u8ba4\u9009\u62e9<\/td><\/tr> \u4e0d\u9002\u5408<\/td> \u5bf9\u5206\u5757\u6709\u7279\u6b8a\u8981\u6c42\u7684\u573a\u666f\uff0c\u6bd4\u5982\u4ee3\u7801\u6587\u4ef6\uff08\u9700\u8981\u6309\u51fd\u6570\/\u7c7b\u6765\u5207\uff09\u3001\u8868\u683c\u6570\u636e\uff08\u9700\u8981\u6309\u884c\u6765\u5207\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u8bed\u4e49\u5206\u5757\uff08Semantic Chunking\uff09<\/h3>\n\n\n\n
\u8bed\u4e49\u5206\u5757\u6362\u4e86\u4e00\u4e2a\u5b8c\u5168\u4e0d\u540c\u7684\u601d\u8def\uff1a\u7528 Embedding \u6a21\u578b\u6765\u5224\u65ad\u6587\u672c\u7684\u8bed\u4e49\u76f8\u4f3c\u5ea6\uff0c\u5728\u8bed\u4e49\u53d1\u751f\u660e\u663e\u53d8\u5316\u7684\u5730\u65b9\u5207\u5272\u3002<\/p>\n\n\n\n
\u5177\u4f53\u8fc7\u7a0b\u662f\u8fd9\u6837\u7684\uff1a \u5148\u628a\u6587\u672c\u6309\u53e5\u5b50\u62c6\u5f00\uff08\u8fd9\u4e00\u6b65\u53ef\u4ee5\u7b80\u5355\u5730\u6309\u53e5\u53f7\u5207\uff09\u5bf9\u6bcf\u4e2a\u53e5\u5b50\u751f\u6210\u4e00\u4e2a\u5411\u91cf\uff08Embedding\uff09\u8ba1\u7b97\u76f8\u90bb\u53e5\u5b50\u4e4b\u95f4\u7684\u5411\u91cf\u76f8\u4f3c\u5ea6 .\u5f53\u76f8\u90bb\u53e5\u5b50\u7684\u76f8\u4f3c\u5ea6\u4f4e\u4e8e\u67d0\u4e2a\u9608\u503c\u65f6\uff0c\u8bf4\u660e\u8bdd\u9898\u53d1\u751f\u4e86\u8f6c\u6362\uff0c\u5728\u8fd9\u91cc\u5207\u4e00\u5200<\/p>\n\n\n\n
\u6700\u76f4\u63a5\u7684\u601d\u8def\uff1a\u628a\u6587\u672c\u4ea4\u7ed9\u5927\u6a21\u578b\uff0c\u8ba9\u5b83\u627e\u51fa\u4e3b\u9898\u5207\u6362\u7684\u4f4d\u7f6e\u3002<\/p>\n\n\n\n
\u5bf9\u6bd4 Embedding vs LLM \u5206\u5757\uff1a<\/p>\n\n\n\n\u7ef4\u5ea6<\/th> Embedding \u8bed\u4e49\u5206\u5757<\/th> LLM \u8f85\u52a9\u5206\u5757<\/th><\/tr> \u539f\u7406<\/strong><\/td>\u8ba1\u7b97\u76f8\u90bb\u53e5\u5b50\u7684\u5411\u91cf\u76f8\u4f3c\u5ea6<\/td> \u5927\u6a21\u578b\u76f4\u63a5\u7406\u89e3\u6587\u672c\u8bed\u4e49<\/td><\/tr> \u5206\u5757\u8d28\u91cf<\/strong><\/td>\u4f9d\u8d56 Embedding \u6a21\u578b\u8d28\u91cf<\/td> \u901a\u5e38\u66f4\u51c6\u786e\uff0c\u80fd\u5904\u7406\u590d\u6742\u8bed\u5883<\/td><\/tr> \u901f\u5ea6<\/strong><\/td>\u5feb\uff08\u6beb\u79d2\u7ea7\uff09<\/td> \u6162\uff08\u79d2\u7ea7\uff09<\/td><\/tr> \u6210\u672c<\/strong><\/td>\u4f4e<\/td> \u9ad8<\/td><\/tr> \u9002\u7528\u573a\u666f<\/strong><\/td>\u5927\u6279\u91cf\u6587\u6863\u5904\u7406<\/td> \u9ad8\u4ef7\u503c\u6587\u6863\u3001\u9700\u8981\u7cbe\u7ec6\u5206\u5757<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u7ef4\u5ea6<\/th> \u8bf4\u660e<\/th><\/tr> \u4f18\u70b9<\/td> \u5207\u5272\u70b9\u57fa\u4e8e\u8bed\u4e49\u800c\u975e\u89c4\u5219\uff0c\u5206\u5757\u8d28\u91cf\u6700\u9ad8\uff0c\u6bcf\u4e2a\u5757\u7684\u4e3b\u9898\u9ad8\u5ea6\u5185\u805a<\/td><\/tr> \u7f3a\u70b9<\/td> \u9700\u8981\u8c03\u7528 Embedding \u6216\u8005 Chat \u6a21\u578b\uff0c\u6709\u989d\u5916\u7684\u8ba1\u7b97\u6210\u672c\u548c\u5ef6\u8fdf\uff1b\u9608\u503c\u9700\u8981\u8c03\u53c2\uff1b\u5bf9\u6a21\u578b\u7684\u8d28\u91cf\u6709\u4f9d\u8d56<\/td><\/tr> \u9002\u5408<\/td> \u5bf9\u68c0\u7d22\u7cbe\u5ea6\u8981\u6c42\u5f88\u9ad8\u7684\u573a\u666f\uff0c\u6bd4\u5982\u6cd5\u5f8b\u6587\u6863\u95ee\u7b54\u3001\u533b\u7597\u77e5\u8bc6\u5e93\u3001\u91d1\u878d\u5408\u89c4\u6587\u6863<\/td><\/tr> \u4e0d\u9002\u5408<\/td> \u6587\u6863\u91cf\u7279\u522b\u5927\u4e14\u5bf9\u5ef6\u8fdf\u654f\u611f\u7684\u573a\u666f\uff1b\u6587\u672c\u672c\u8eab\u7ed3\u6784\u5df2\u7ecf\u5f88\u6e05\u6670\u7684\u573a\u666f\uff08\u7528\u9012\u5f52\u5206\u5757\u5c31\u591f\u4e86\uff0c\u6ca1\u5fc5\u8981\u4e0a\u8bed\u4e49\u5206\u5757\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n5. \u6df7\u5408\u5206\u5757\uff08Hybrid Chunking\uff09<\/h3>\n\n\n\n
\u5b9e\u9645\u9879\u76ee\u4e2d\uff0c\u5355\u4e00\u7684\u5206\u5757\u7b56\u7565\u5f80\u5f80\u4e0d\u591f\u7528\u3002\u4e0d\u540c\u7c7b\u578b\u7684\u6587\u6863\u3001\u751a\u81f3\u540c\u4e00\u4efd\u6587\u6863\u7684\u4e0d\u540c\u90e8\u5206\uff0c\u53ef\u80fd\u9002\u5408\u4e0d\u540c\u7684\u5206\u5757\u65b9\u5f0f\u3002\u6df7\u5408\u5206\u5757\u7684\u601d\u8def\u5c31\u662f\uff1a\u628a\u591a\u79cd\u7b56\u7565\u7ec4\u5408\u8d77\u6765\u7528\uff0c\u53d6\u957f\u8865\u77ed\u3002<\/p>\n\n\n\n
\u5e38\u89c1\u7684\u7ec4\u5408\u65b9\u5f0f\u6709\u51e0\u79cd\uff1a<\/p>\n\n\n\n
\u7b2c\u4e00\u79cd\uff0c\u9012\u5f52\u5206\u5757 + \u8bed\u4e49\u5206\u5757\u3002\u5148\u7528\u9012\u5f52\u5206\u5757\u505a\u7c97\u5207\uff0c\u628a\u6587\u672c\u6309\u6bb5\u843d\u3001\u7ae0\u8282\u5207\u6210\u5927\u5757\uff1b\u7136\u540e\u5bf9\u6bcf\u4e2a\u5927\u5757\u518d\u7528\u8bed\u4e49\u5206\u5757\u505a\u7ec6\u5207\uff0c\u786e\u4fdd\u6bcf\u4e2a\u6700\u7ec8\u7684\u5757\u5728\u8bed\u4e49\u4e0a\u662f\u5185\u805a\u7684\u3002<\/p>\n\n\n\n
\u7b2c\u4e8c\u79cd\uff0c\u6309\u6587\u6863\u7c7b\u578b\u9009\u7b56\u7565\u3002\u6bd4\u5982\u5728\u4e00\u4e2a\u4f01\u4e1a\u77e5\u8bc6\u5e93\u7cfb\u7edf\u4e2d\uff0c\u4ea7\u54c1\u624b\u518c\u7528\u9012\u5f52\u5206\u5757\uff0cFAQ \u7528\u6309\u95ee\u7b54\u5bf9\u5207\u5272\uff0c\u5408\u540c\u6587\u672c\u7528\u8bed\u4e49\u5206\u5757\u3002\u5728\u4ee3\u7801\u5c42\u9762\uff0c\u5c31\u662f\u4e00\u4e2a\u8def\u7531\u903b\u8f91\uff0c\u6839\u636e\u6587\u6863\u7684\u7c7b\u578b\u6216\u6765\u6e90\u9009\u62e9\u4e0d\u540c\u7684\u5206\u5757\u5668\u3002<\/p>\n\n\n\n
\u7b2c\u4e09\u79cd\uff0c\u5206\u5757 + \u540e\u5904\u7406\u3002\u5148\u7528\u9012\u5f52\u5206\u5757\u5207\u5b8c\uff0c\u7136\u540e\u5bf9\u7ed3\u679c\u505a\u4e00\u8f6e\u540e\u5904\u7406\uff1a\u5408\u5e76\u592a\u77ed\u7684\u5757\u3001\u62c6\u5206\u592a\u957f\u7684\u5757\u3001\u7ed9\u6bcf\u4e2a\u5757\u8865\u5145\u5143\u6570\u636e\uff08\u6bd4\u5982\u6240\u5c5e\u7ae0\u8282\u6807\u9898\u3001\u6587\u6863\u6765\u6e90\uff09\u3002<\/p>\n\n\n\n
\u62ff\u6211\u4eec\u7684\u7535\u5546\u77e5\u8bc6\u5e93\u6765\u8bf4\uff0c\u4e00\u4e2a\u5b9e\u9645\u7684\u6df7\u5408\u65b9\u6848\u53ef\u80fd\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n
\n- \u77e5\u8bc6\u5e93\u6b63\u6587\uff08\u9000\u8d27\u653f\u7b56\u3001\u7269\u6d41\u89c4\u5219\u7b49\uff09\uff1a\u7528\u9012\u5f52\u5206\u5757\uff0c\u6309\u7ae0\u8282\u5207\u5272<\/li>\n\n\n\n
- FAQ \u95ee\u7b54\u5bf9\uff1a\u6309\u95ee\u7b54\u5bf9\u5207\u5272\uff0c\u6bcf\u4e2a Q&A \u662f\u4e00\u4e2a\u5757<\/li>\n\n\n\n
- \u5546\u54c1\u8be6\u60c5\u9875\uff1a\u5148\u63d0\u53d6\u7ed3\u6784\u5316\u5b57\u6bb5\uff08\u4ef7\u683c\u3001\u89c4\u683c\uff09\uff0c\u518d\u5bf9\u63cf\u8ff0\u6587\u672c\u7528\u91cd\u53e0\u5206\u5757<\/li>\n<\/ul>\n\n\n\n
![\"\"](\"https:\/\/eve2333.top\/wp-content\/uploads\/2026\/03\/1774791734-image-1024x500.png\")
<\/figure>\n\n\n\n\u4e00\u4e2a\u5b9e\u7528\u7684\u8c03\u53c2\u601d\u8def\uff1a\u4ece chunkSize=500\u3001overlap=50 \u5f00\u59cb\uff0c\u8dd1\u51e0\u4e2a\u6d4b\u8bd5 query \u770b\u68c0\u7d22\u6548\u679c\uff0c\u5982\u679c\u53d1\u73b0\u68c0\u7d22\u7ed3\u679c\u4e0d\u591f\u7cbe\u51c6\u5c31\u8c03\u5c0f chunkSize\uff0c\u5982\u679c\u53d1\u73b0\u4e0a\u4e0b\u6587\u7ecf\u5e38\u65ad\u88c2\u5c31\u8c03\u5927 overlap\u3002<\/p>\n\n\n\n
\u771f\u5b9e\u9879\u76ee\u91cc\uff0c\u5206\u5757\u6548\u679c\u4e0d\u597d\uff0c\u5f80\u5f80\u4e0d\u53ea\u662f chunkSize<\/code> \u6ca1\u8c03\u5bf9\uff0c\u8fd8\u6709\u53ef\u80fd\u662f\u4e0a\u6e38\u62bd\u53d6\u51fa\u6765\u7684\u6587\u672c\u5c31\u5df2\u7ecf\u201c\u810f\u201d\u4e86<\/strong> \u2014\u2014\u5c24\u5176\u662f PDF \u8fd9\u79cd\u683c\u5f0f\uff1a<\/p>\n\n\n\n\n- \u9875\u7709\u9875\u811a\u3001\u76ee\u5f55\u3001\u9875\u7801\u6df7\u8fdb\u6b63\u6587\uff0c\u8bed\u4e49\u88ab\u5927\u91cf\u566a\u97f3\u7a00\u91ca<\/li>\n\n\n\n
- \u65ad\u884c\/\u8fde\u5b57\u628a\u4e00\u53e5\u8bdd\u62c6\u6210\u591a\u6bb5\uff0c\u5bfc\u81f4\u6309\u6bb5\u843d\/\u53e5\u5b50\u9012\u5f52\u5206\u5272\u5931\u6548<\/li>\n\n\n\n
- \u8868\u683c\u88ab\u6253\u6563\u6210\u788e\u8bcd\u6216\u9519\u4f4d\u5b57\u6bb5\uff0c\u68c0\u7d22\u547d\u4e2d\u4f46\u65e0\u6cd5\u5f62\u6210\u53ef\u8bfb\u4e0a\u4e0b\u6587<\/li>\n<\/ul>\n\n\n\n
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<\/figure>\n\n\n\n\u5168\u94fe\u8def\u56fe\uff1a \u4e0d\u540c\u683c\u5f0f\u7528\u4e0d\u540c\u7684\u89e3\u6790\u65b9\u5f0f\uff1aPDF \u8981\u63d0\u53d6\u6587\u5b57\uff0cWord \u8981\u8bfb\u53d6\u5185\u5bb9\uff0c\u7f51\u9875\u8981\u722c\u53d6\u5e76\u6e05\u6d17\u3002<\/p>\n\n\n\n \u5e38\u89c1\u505a\u6cd5\u662f 500-1000 \u5b57\u4e00\u5757\uff0c\u76f8\u90bb\u5757\u4e4b\u95f4\u6709\u4e00\u5b9a\u91cd\u53e0\uff08\u6bd4\u5982\u91cd\u53e0 100 \u5b57\uff09\uff0c\u9632\u6b62\u91cd\u8981\u4fe1\u606f\u6b63\u597d\u88ab\u5207\u65ad\u3002<\/p>\n\n\n\n \u8fd9\u6b65\u662f\u6574\u4e2a RAG \u7684\u6838\u5fc3\u3002\u628a\u6587\u5b57\u8f6c\u6210\u5411\u91cf\u3002<\/p>\n\n\n\n \u5411\u91cf\u5c31\u662f\u4e00\u4e32\u6570\u5b57\uff0c\u6bd4\u5982 \u8fd9\u4e2a\u8f6c\u6362\u7531\u4e13\u95e8\u7684 Embedding \u6a21\u578b\u5b8c\u6210\uff0c\u6bd4\u5982 Qwen3 \u7684 Qwen3-Embedding-8B\uff0c\u6216\u8005\u5f00\u6e90\u7684 bge\u3001m3e\u3002<\/p>\n\n\n\n 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\u7531\u4e8e\u5927\u6a21\u578b\u7684\u4e0a\u4e0b\u6587\u7a97\u53e3\u9650\u5236\uff0c\u68c0\u7d22\u7cbe\u5ea6\u7684\u95ee\u9898\uff0c\u6211\u4eec\u63a5\u4e0b\u6765\u8981\u5206\u5757\uff0c\u7eaf\u6587\u672c\u53ea\u662f\u539f\u6750\u6599\uff0c\u8fd8\u4e0d\u80fd\u76f4\u63a5\u7528\u4e8e\u68c0\u7d22\u3002\u5206\u5757\u662f\u7d27\u63a5\u7740\u6587\u672c\u63d0\u53d6\u4e4b\u540e\u7684\u4e00\u6b65\uff0c\u5b83\u628a\u957f\u6587\u672c\u5207\u6210\u9002\u5408\u68c0\u7d22\u7684\u5c0f\u6bb5\u3002\u628a\u6bcf\u4e2a\u6587\u672c\u5757\u8f6c\u6210\u4e00\u7ec4\u6570\u5b57\uff08\u5411\u91cf\uff09\uff0c\u65b9\u4fbf\u8ba1\u7b97\u673a\u505a\u76f8\u4f3c\u5ea6\u68c0\u7d22\u3002<\/p>\n\n\n\n \u5728\u52a8\u624b\u5207\u4e4b\u524d\uff0c\u6709\u4e24\u4e2a\u53c2\u6570\u4f60\u5fc5\u987b\u641e\u6e05\u695a\uff1a chunkSize \u5c31\u662f\u6bcf\u4e2a\u5757\u7684\u957f\u5ea6\u4e0a\u9650\u3002\u6bd4\u5982\u4f60\u8bbe chunkSize = 200\uff0c\u610f\u601d\u662f\u6bcf\u4e2a\u5757\u6700\u591a\u5305\u542b 200 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\u62ff\u6211\u4eec\u7684\u7535\u5546\u77e5\u8bc6\u5e93\u6765\u8bf4\uff0c\u5982\u679c chunkSize \u8bbe\u6210 200\uff0c\u9012\u5f52\u5206\u5757\u4f1a\u5148\u5c1d\u8bd5\u6309\u7ae0\u8282\uff08\u7a7a\u884c\uff09\u5207\u5272\u3002\u9000\u8d27\u653f\u7b56\u90a3\u4e00\u6bb5\u5927\u7ea6 150 \u5b57\uff0c\u6ca1\u8d85\u8fc7 200\uff0c\u5c31\u5b8c\u6574\u4fdd\u7559\u4e3a\u4e00\u4e2a\u5757\u3002\u5982\u679c\u67d0\u4e2a\u7ae0\u8282\u7279\u522b\u957f\u8d85\u8fc7\u4e86 200 \u5b57\uff0c\u624d\u4f1a\u8fdb\u4e00\u6b65\u6309\u53e5\u53f7\u5207\u6210\u66f4\u5c0f\u7684\u5757\u3002<\/p>\n\n\n\n \u8bed\u4e49\u5206\u5757\u6362\u4e86\u4e00\u4e2a\u5b8c\u5168\u4e0d\u540c\u7684\u601d\u8def\uff1a\u7528 Embedding \u6a21\u578b\u6765\u5224\u65ad\u6587\u672c\u7684\u8bed\u4e49\u76f8\u4f3c\u5ea6\uff0c\u5728\u8bed\u4e49\u53d1\u751f\u660e\u663e\u53d8\u5316\u7684\u5730\u65b9\u5207\u5272\u3002<\/p>\n\n\n\n \u5177\u4f53\u8fc7\u7a0b\u662f\u8fd9\u6837\u7684\uff1a \u5148\u628a\u6587\u672c\u6309\u53e5\u5b50\u62c6\u5f00\uff08\u8fd9\u4e00\u6b65\u53ef\u4ee5\u7b80\u5355\u5730\u6309\u53e5\u53f7\u5207\uff09\u5bf9\u6bcf\u4e2a\u53e5\u5b50\u751f\u6210\u4e00\u4e2a\u5411\u91cf\uff08Embedding\uff09\u8ba1\u7b97\u76f8\u90bb\u53e5\u5b50\u4e4b\u95f4\u7684\u5411\u91cf\u76f8\u4f3c\u5ea6 .\u5f53\u76f8\u90bb\u53e5\u5b50\u7684\u76f8\u4f3c\u5ea6\u4f4e\u4e8e\u67d0\u4e2a\u9608\u503c\u65f6\uff0c\u8bf4\u660e\u8bdd\u9898\u53d1\u751f\u4e86\u8f6c\u6362\uff0c\u5728\u8fd9\u91cc\u5207\u4e00\u5200<\/p>\n\n\n\n \u6700\u76f4\u63a5\u7684\u601d\u8def\uff1a\u628a\u6587\u672c\u4ea4\u7ed9\u5927\u6a21\u578b\uff0c\u8ba9\u5b83\u627e\u51fa\u4e3b\u9898\u5207\u6362\u7684\u4f4d\u7f6e\u3002<\/p>\n\n\n\n \u5bf9\u6bd4 Embedding vs LLM \u5206\u5757\uff1a<\/p>\n\n\n\n \u5b9e\u9645\u9879\u76ee\u4e2d\uff0c\u5355\u4e00\u7684\u5206\u5757\u7b56\u7565\u5f80\u5f80\u4e0d\u591f\u7528\u3002\u4e0d\u540c\u7c7b\u578b\u7684\u6587\u6863\u3001\u751a\u81f3\u540c\u4e00\u4efd\u6587\u6863\u7684\u4e0d\u540c\u90e8\u5206\uff0c\u53ef\u80fd\u9002\u5408\u4e0d\u540c\u7684\u5206\u5757\u65b9\u5f0f\u3002\u6df7\u5408\u5206\u5757\u7684\u601d\u8def\u5c31\u662f\uff1a\u628a\u591a\u79cd\u7b56\u7565\u7ec4\u5408\u8d77\u6765\u7528\uff0c\u53d6\u957f\u8865\u77ed\u3002<\/p>\n\n\n\n \u5e38\u89c1\u7684\u7ec4\u5408\u65b9\u5f0f\u6709\u51e0\u79cd\uff1a<\/p>\n\n\n\n \u7b2c\u4e00\u79cd\uff0c\u9012\u5f52\u5206\u5757 + \u8bed\u4e49\u5206\u5757\u3002\u5148\u7528\u9012\u5f52\u5206\u5757\u505a\u7c97\u5207\uff0c\u628a\u6587\u672c\u6309\u6bb5\u843d\u3001\u7ae0\u8282\u5207\u6210\u5927\u5757\uff1b\u7136\u540e\u5bf9\u6bcf\u4e2a\u5927\u5757\u518d\u7528\u8bed\u4e49\u5206\u5757\u505a\u7ec6\u5207\uff0c\u786e\u4fdd\u6bcf\u4e2a\u6700\u7ec8\u7684\u5757\u5728\u8bed\u4e49\u4e0a\u662f\u5185\u805a\u7684\u3002<\/p>\n\n\n\n \u7b2c\u4e8c\u79cd\uff0c\u6309\u6587\u6863\u7c7b\u578b\u9009\u7b56\u7565\u3002\u6bd4\u5982\u5728\u4e00\u4e2a\u4f01\u4e1a\u77e5\u8bc6\u5e93\u7cfb\u7edf\u4e2d\uff0c\u4ea7\u54c1\u624b\u518c\u7528\u9012\u5f52\u5206\u5757\uff0cFAQ \u7528\u6309\u95ee\u7b54\u5bf9\u5207\u5272\uff0c\u5408\u540c\u6587\u672c\u7528\u8bed\u4e49\u5206\u5757\u3002\u5728\u4ee3\u7801\u5c42\u9762\uff0c\u5c31\u662f\u4e00\u4e2a\u8def\u7531\u903b\u8f91\uff0c\u6839\u636e\u6587\u6863\u7684\u7c7b\u578b\u6216\u6765\u6e90\u9009\u62e9\u4e0d\u540c\u7684\u5206\u5757\u5668\u3002<\/p>\n\n\n\n \u7b2c\u4e09\u79cd\uff0c\u5206\u5757 + 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\u771f\u5b9e\u9879\u76ee\u91cc\uff0c\u5206\u5757\u6548\u679c\u4e0d\u597d\uff0c\u5f80\u5f80\u4e0d\u53ea\u662f \u6240\u4ee5\u901a\u5e38\u4e0d\u4f1a\u201c\u62bd\u5b8c\u5c31\u5207\u201d\u3002\u66f4\u7a33\u59a5\u7684\u6d41\u7a0b\u662f\uff1a\u5148\u7528Tika\u7b49\u5de5\u5177\u505a\u6587\u672c\u62bd\u53d6\u2192\u518d\u7528\u6e05\u6d17\u5668\u505a\u7ed3\u6784\u4fee\u590d\u4e0e\u53bb\u566a\u2192\u6700\u540e\u624d\u8fdb\u5165\u5206\u5757\u4e0e\u5411\u91cf\u5316<\/strong> \u3002<\/p>\n\n\n\n \u5206\u5757\u5c42\u9762\u4e5f\u6709\u7c7b\u4f3c\u7684\u73b0\u5b9e\u95ee\u9898\u3002\u50cf Dify\u3001RAGFlow \u8fd9\u7c7b\u6807\u51c6 RAG \u65b9\u6848\uff0c\u5f88\u591a\u65f6\u5019\u4f9d\u8d56\u5355\u4e00\u5206\u5757\u7b56\u7565\uff0c\u8c03\u53c2\u5c31\u5bb9\u6613\u51fa\u73b0\u201c\u987e\u6b64\u5931\u5f7c\u201d\uff1a \u9488\u5bf9\u4e2d\u5c0f\u89c4\u6a21\u6587\u6863<\/strong> \uff0c\u66f4\u5b9e\u7528\u7684\u505a\u6cd5\u662f\uff1a\u5148\u7528\u57fa\u7840\u7b56\u7565\u628a\u6587\u6863\u62c6\u6210\u521d\u7a3f\u5757\uff0c\u7136\u540e\u5728\u6b64\u57fa\u7840\u4e0a\u505a\u4e00\u8f6e\u4eba\u5de5\u4e8c\u6b21\u7f16\u6392<\/strong> \u2014\u2014\u6839\u636e\u76f8\u90bb\u5757\u7684\u8bed\u4e49\u5173\u7cfb\u8fdb\u884c\u8865\u9f50\u3001\u5408\u5e76\u6216\u91cd\u5206\u914d\uff0c\u8ba9\u6700\u7ec8\u7684 chunk \u66f4\u8d34\u5408\u771f\u5b9e\u95ee\u9898\u7c7b\u578b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":" \u5927\u6a21\u578b\u7684\u4e94\u5927\u5c40\u9650\u6027 RAG\u68c0\u7d22\u589e\u5f3a\u751f\u6210 \u5148\u67e5\u8d44\u6599\uff0c\u518d\u56de\u7b54\uff0c \u5168\u94fe\u8def\u56fe\uff1aingest \u2192 chunk \u2192 embed \u2192 index …<\/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-1860","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts\/1860","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=1860"}],"version-history":[{"count":3,"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts\/1860\/revisions"}],"predecessor-version":[{"id":1867,"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts\/1860\/revisions\/1867"}],"wp:attachment":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1860"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1860"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1860"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}ingest \u2192 chunk \u2192 embed \u2192 index \u2192 retrieve \u2192 answer<\/code>\u3002<\/p>\n\n\n\nIngest\uff1a\u628a\u6570\u636e\u5bfc\u8fdb\u6765<\/h4>\n\n\n\n
Chunk\uff1a\u628a\u957f\u6587\u6863\u5207\u6210\u5c0f\u5757<\/h4>\n\n\n\n
Embed\uff1a\u628a\u6587\u5b57\u53d8\u6210\u5411\u91cf<\/h4>\n\n\n\n
[0.23, -0.45, 0.67, ...]<\/code>\u3002\u8fd9\u4e32\u6570\u5b57\u7f16\u7801\u4e86\u8fd9\u6bb5\u6587\u5b57\u7684\u8bed\u4e49\u4fe1\u606f\uff0c\u610f\u601d\u76f8\u8fd1\u7684\u6587\u5b57\uff0c\u5411\u91cf\u5728\u7a7a\u95f4\u4e2d\u7684\u8ddd\u79bb\u4e5f\u8fd1\u3002<\/p>\n\n\n\nIndex\uff1a\u5b58\u8fdb\u5411\u91cf\u6570\u636e\u5e93<\/h4>\n\n\n\n
Milvus<\/code>\u3001Pinecone<\/code>\u3001Weaviate<\/code>\uff0c\u8f7b\u91cf\u7ea7\u7684\u6709 Faiss<\/code>\u3001Chroma<\/code>\u3002<\/p>\n\n\n\n\n
Retrieve\uff1a\u68c0\u7d22\u76f8\u5173\u5185\u5bb9<\/h4>\n\n\n\n
\n
Answer\uff1a\u5927\u6a21\u578b\u751f\u6210\u56de\u7b54<\/h4>\n\n\n\n
\u9636\u6bb5<\/th> \u6b65\u9aa4<\/th> \u505a\u4ec0\u4e48<\/th><\/tr> \u51c6\u5907\u9636\u6bb5\uff08\u79bb\u7ebf\uff09<\/td> Ingest<\/td> \u5bfc\u5165\u539f\u59cb\u6587\u6863<\/td><\/tr> <\/td> Chunk<\/td> \u5207\u6210\u5c0f\u5757<\/td><\/tr> <\/td> Embed<\/td> \u8f6c\u6210\u5411\u91cf<\/td><\/tr> <\/td> Index<\/td> \u5b58\u8fdb\u5411\u91cf\u6570\u636e\u5e93<\/td><\/tr> \u8fd0\u884c\u9636\u6bb5\uff08\u5728\u7ebf\uff09<\/td> Retrieve<\/td> \u68c0\u7d22\u76f8\u5173\u6587\u6863<\/td><\/tr> <\/td> Answer<\/td> \u5927\u6a21\u578b\u751f\u6210\u56de\u7b54<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n \u7528Apache Tika\u89e3\u6790\u6587\u6863<\/h1>\n\n\n\n
.pdf<\/code> \u540e\u7f00\uff0c\u5185\u90e8\u7ed3\u6784\u53ef\u80fd\u5b8c\u5168\u4e0d\u540c\uff1a<\/strong><\/p>\n\n\n\n\n
.docx<\/code> \u6587\u4ef6\uff0c\u6253\u5f00\u770b\u8d77\u6765\u5c31\u662f\u51e0\u6bb5\u6587\u5b57\u3002\u8868\u683c\u88ab\u62c6\u6210\u4e86\u83ab\u540d\u5176\u5999\u7684\u6362\u884c\u3002\u9875\u7709\u9875\u811a\u6df7\u8fdb\u4e86\u6b63\u6587\uff0c\u591a\u4f59\u7684\u7a7a\u884c\u548c\u7a7a\u683c\u3002\u6587\u6863\u5c5e\u6027\uff08\u4f5c\u8005\u3001\u521b\u5efa\u65f6\u95f4\uff09\u4f60\u6839\u672c\u6ca1\u62ff\u5230\u3002\u4f60\u5728\u5b66\u6821\u62ffword\u5199\u8bba\u6587\u4e5f\u662f\u8fd9\u6837\u7684<\/p>\n\n\n\n\n
\u5b57\u6bb5<\/th> \u8bf4\u660e<\/th> \u793a\u4f8b<\/th><\/tr> Content-Type<\/code><\/td>MIME \u7c7b\u578b<\/td> application\/pdf<\/code><\/td><\/tr>title<\/code><\/td>\u6587\u6863\u6807\u9898<\/td> 2024\u5e74\u5ea6\u62a5\u544a<\/td><\/tr> creator<\/code><\/td>\u4f5c\u8005\/\u521b\u5efa\u8005<\/td> \u5f20\u4e09<\/td><\/tr> created<\/code><\/td>\u521b\u5efa\u65f6\u95f4<\/td> 2024-01-15T10:30:00<\/td><\/tr> modified<\/code><\/td>\u4fee\u6539\u65f6\u95f4<\/td> 2024-03-20T14:00:00<\/td><\/tr> pageCount<\/code><\/td>\u9875\u6570<\/td> 15<\/td><\/tr> wordCount<\/code><\/td>\u5b57\u6570<\/td> 5000<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n pom.xml<\/code> \u4e2d\u6dfb\u52a0\uff1a<\/p>\n\n\n\n <dependencies>\n <!-- Spring Boot Web -->\n <dependency>\n <groupId>org.springframework.boot<\/groupId>\n <artifactId>spring-boot-starter-web<\/artifactId>\n <\/dependency>\n\n <!-- Apache Tika \u6838\u5fc3 -->\n <dependency>\n <groupId>org.apache.tika<\/groupId>\n <artifactId>tika-core<\/artifactId>\n <version>${tika.version}<\/version>\n <\/dependency>\n\n <!-- Apache Tika \u89e3\u6790\u5668\uff08\u5305\u542b\u5404\u79cd\u683c\u5f0f\u652f\u6301\uff09 -->\n <dependency>\n <groupId>org.apache.tika<\/groupId>\n <artifactId>tika-parsers-standard-package<\/artifactId>\n <version>${tika.version}<\/version>\n <\/dependency>\n <\/dependencies><\/code><\/pre>\n\n\n\nTika \u9009\u62e9\u5d4c\u5165\u5f0f\u8fd8\u662f\u72ec\u7acb\u90e8\u7f72\u8fd0\u884c<\/h2>\n\n\n\n
\n
\n
\u7ef4\u5ea6<\/th> \u5d4c\u5165 Spring Boot\uff08\u4f9d\u8d56\u5e93\uff09<\/th> \u5355\u72ec\u90e8\u7f72\uff08Tika Server\uff09<\/th><\/tr> \u4e0a\u624b\u6210\u672c<\/td> \u2705 \u6700\u5feb\uff1a\u52a0\u4f9d\u8d56\u5199\u4ee3\u7801\u5c31\u80fd\u8dd1<\/td> \u26a0\ufe0f \u591a\u4e00\u6b65\uff1a\u8d77\u5bb9\u5668 + \u914d\u670d\u52a1\u5730\u5740<\/td><\/tr> \u4f9d\u8d56\/\u4f53\u79ef<\/td> \u26a0\ufe0f \u4f9d\u8d56\u6811\u5927\uff0cfat jar \u53d8\u5927\uff1b\u53ef\u80fd\u9047\u5230\u4f9d\u8d56\u51b2\u7a81<\/td> \u2705 \u4f9d\u8d56\u90fd\u5728\u5bb9\u5668\u91cc\uff0c\u5e94\u7528\u66f4\u201c\u5e72\u51c0\u201d<\/td><\/tr> OCR\/\u7cfb\u7edf\u4f9d\u8d56<\/td> \u26a0\ufe0f OCR\u3001\u5b57\u4f53\u3001\u56fe\u50cf\u5e93\u7b49\u53ef\u80fd\u9700\u8981\u88c5\u7cfb\u7edf\u5305\uff0c\u73af\u5883\u5dee\u5f02\u591a<\/td> \u2705 \u955c\u50cf\u901a\u5e38\u628a OCR \u7b49\u6253\u5305\u597d\u4e86\uff0c\u73af\u5883\u4e00\u81f4<\/td><\/tr> \u8d44\u6e90\u9694\u79bb\uff08CPU\/\u5185\u5b58\uff09<\/td> \u26a0\ufe0f \u89e3\u6790\u5927\u6587\u4ef6\u5f88\u5403\u5185\u5b58\/CPU\uff0c\u53ef\u80fd\u62d6\u6162\u751a\u81f3\u6253\u6302\u4f60\u7684\u4e1a\u52a1\u8fdb\u7a0b<\/td> \u2705 \u89e3\u6790\u5403\u8d44\u6e90\u5728\u5bb9\u5668\u91cc\uff1bTika \u6302\u4e86\u4e1a\u52a1\u4e0d\u4e00\u5b9a\u8ddf\u7740\u6302\uff08\u53ef\u91cd\u542f\/\u9650\u989d\uff09<\/td><\/tr> \u5b89\u5168\u9694\u79bb\uff08\u4e0d\u53ef\u4fe1\u6587\u4ef6\uff09<\/td> \u26a0\ufe0f \u98ce\u9669\u76f4\u63a5\u8fdb\u4f60\u7684\u4e1a\u52a1 JVM<\/td> \u2705 \u89e3\u6790\u201c\u5371\u9669\u9762\u201d\u9694\u79bb\u5230\u72ec\u7acb\u670d\u52a1\u66f4\u5408\u7406\uff1b\u4f46\u4ecd\u8981\u505a\u7248\u672c\u5347\u7ea7\/\u9650\u5236\u7b56\u7565<\/td><\/tr> \u6269\u5c55\u6027<\/td> \u26a0\ufe0f \u6bcf\u4e2a\u4e1a\u52a1\u5b9e\u4f8b\u90fd\u8981\u5e26\u4e00\u4efd\u89e3\u6790\u80fd\u529b\uff0c\u6a2a\u5411\u6269\u5c55\u6210\u672c\u9ad8<\/td> \u2705 \u591a\u4e2a\u4e1a\u52a1\u5171\u4eab\u4e00\u7ec4 Tika\uff1b\u53ef\u4ee5\u5355\u72ec\u6c34\u5e73\u6269\u5bb9<\/td><\/tr> \u6027\u80fd<\/td> \u2705 \u5c11\u4e00\u6b21\u7f51\u7edc\u4f20\u8f93\uff0c\u5ef6\u8fdf\u66f4\u4f4e<\/td> \u26a0\ufe0f \u591a\u4e00\u6b21 HTTP \u4f20\u8f93\uff08\u4f46\u5c40\u57df\u7f51\u4e00\u822c\u53ef\u63a5\u53d7\uff09\uff1b\u541e\u5410\u53ef\u9760\u6269\u5bb9\u8865<\/td><\/tr> \u591a\u8bed\u8a00\/\u591a\u9879\u76ee\u590d\u7528<\/td> \u26a0\ufe0f \u4e3b\u8981\u670d\u52a1\u4e8e Java \u9879\u76ee<\/td> \u2705 \u4efb\u610f\u8bed\u8a00\u90fd\u80fd HTTP \u8c03\uff0c\u590d\u7528\u6027\u5f3a<\/td><\/tr> \u8fd0\u7ef4\u590d\u6742\u5ea6<\/td> \u2705 \u5c11\u4e00\u4e2a\u7ec4\u4ef6<\/td> \u26a0\ufe0f \u591a\u4e00\u4e2a\u7ec4\u4ef6\uff08\u76d1\u63a7\u3001\u65e5\u5fd7\u3001\u9650\u6d41\u3001\u9274\u6743\u7b49\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n \u7f16\u5199\u6587\u6863\u89e3\u6790\u670d\u52a1<\/h3>\n\n\n\n
2.1 \u521b\u5efa\u89e3\u6790\u7ed3\u679c DTO<\/h4>\n\n\n\n
\/**\n * \u6587\u6863\u89e3\u6790\u7ed3\u679c\n *\/@Setter@GetterpublicclassParseResult{\/**\n * \u662f\u5426\u89e3\u6790\u6210\u529f\n *\/privateboolean success;\/**\n * \u68c0\u6d4b\u5230\u7684 MIME \u7c7b\u578b\n *\/privateString mimeType;\/**\n * \u63d0\u53d6\u7684\u6587\u672c\u5185\u5bb9\n *\/privateString content;\/**\n * \u63d0\u53d6\u7684\u5143\u6570\u636e\n *\/privateMap<String, String> metadata;\/**\n * \u6587\u672c\u957f\u5ea6\uff08\u5b57\u7b26\u6570\uff09\n *\/privateint contentLength;\/**\n * \u9519\u8bef\u4fe1\u606f\uff08\u5982\u679c\u5931\u8d25\uff09\n *\/privateString errorMessage;\/\/ \u9759\u6001\u5de5\u5382\u65b9\u6cd5publicstaticParseResultsuccess(String mimeType,String content,Map<String, String> metadata){ParseResult result =newParseResult();\n result.setSuccess(true);\n result.setMimeType(mimeType);\n result.setContent(content);\n result.setContentLength(content !=null? content.length():0);\n result.setMetadata(metadata);return result;}publicstaticParseResultfailure(String errorMessage){ParseResult result =newParseResult();\n result.setSuccess(false);\n result.setErrorMessage(errorMessage);return result;}}<\/code><\/pre>\n\n\n\n2.2 \u521b\u5efa Tika \u89e3\u6790\u670d\u52a1<\/h4>\n\n\n\n
@Slf4j@ServicepublicclassTikaParseService{\/**\n * Tika \u5b9e\u4f8b\uff08\u7528\u4e8e\u7b80\u5355\u64cd\u4f5c\uff0c\u5982 MIME \u68c0\u6d4b\uff09\n *\/privatefinalTika tika =newTika();\/**\n * \u81ea\u52a8\u68c0\u6d4b\u89e3\u6790\u5668\n *\/privatefinalParser parser =newAutoDetectParser();\/**\n * \u6700\u5927\u6587\u672c\u957f\u5ea6\u9650\u5236\uff08-1 \u8868\u793a\u65e0\u9650\u5236\uff0c\u4f46\u53ef\u80fd\u5bfc\u81f4\u5185\u5b58\u95ee\u9898\uff09\n * \u8fd9\u91cc\u8bbe\u7f6e\u4e3a 10MB \u5b57\u7b26\n *\/privatestaticfinalintMAX_TEXT_LENGTH=10*1024*1024;\/**\n * \u89e3\u6790\u6587\u4ef6\uff0c\u63d0\u53d6\u6587\u672c\u548c\u5143\u6570\u636e\n *\n * @param file \u4e0a\u4f20\u7684\u6587\u4ef6\n * @return \u89e3\u6790\u7ed3\u679c\n *\/publicParseResultparseFile(MultipartFile file){\/\/ 1. \u57fa\u672c\u6821\u9a8cif(file ==null|| file.isEmpty()){returnParseResult.failure(\"\u6587\u4ef6\u4e3a\u7a7a\");}String originalFilename = file.getOriginalFilename();\n log.info(\"\u5f00\u59cb\u89e3\u6790\u6587\u4ef6: {}, \u5927\u5c0f: {} bytes\", originalFilename, file.getSize());try(InputStream inputStream = file.getInputStream()){\/\/ 2. \u68c0\u6d4b MIME \u7c7b\u578b\/\/ \u6ce8\u610f\uff1a\u8fd9\u91cc\u9700\u8981\u91cd\u65b0\u83b7\u53d6\u6d41\uff0c\u56e0\u4e3a\u68c0\u6d4b\u4f1a\u6d88\u8d39\u6d41String mimeType;try(InputStream detectStream = file.getInputStream()){\n mimeType = tika.detect(detectStream, originalFilename);}\n log.info(\"\u68c0\u6d4b\u5230 MIME \u7c7b\u578b: {}\", mimeType);\/\/ 3. \u51c6\u5907\u89e3\u6790\u5668\u7ec4\u4ef6\/\/ BodyContentHandler: \u7528\u4e8e\u63a5\u6536\u89e3\u6790\u51fa\u7684\u6587\u672c\u5185\u5bb9\/\/ \u53c2\u6570 MAX_TEXT_LENGTH \u9650\u5236\u6700\u5927\u6587\u672c\u957f\u5ea6\uff0c\u9632\u6b62\u5185\u5b58\u6ea2\u51faBodyContentHandler handler =newBodyContentHandler(MAX_TEXT_LENGTH);\/\/ Metadata: \u7528\u4e8e\u5b58\u50a8\u5143\u6570\u636eMetadata metadata =newMetadata();\/\/ \u8bbe\u7f6e\u6587\u4ef6\u540d\uff0c\u5e2e\u52a9\u89e3\u6790\u5668\u8bc6\u522b\n metadata.set(TikaCoreProperties.RESOURCE_NAME_KEY, originalFilename);\/\/ ParseContext: \u89e3\u6790\u4e0a\u4e0b\u6587\uff0c\u53ef\u4ee5\u914d\u7f6e\u989d\u5916\u9009\u9879ParseContext context =newParseContext();\/\/ 4. \u6267\u884c\u89e3\u6790try(InputStream parseStream = file.getInputStream()){\n parser.parse(parseStream, handler, metadata, context);}\/\/ 5. \u83b7\u53d6\u89e3\u6790\u7ed3\u679cString content = handler.toString();\/\/ 6. \u6e05\u6d17\u6587\u672c\uff08\u53bb\u9664\u591a\u4f59\u7a7a\u767d\uff09\n content =cleanText(content);\/\/ 7. \u63d0\u53d6\u5143\u6570\u636eMap<String, String> metadataMap =extractMetadata(metadata);\/\/ 8. \u68c0\u67e5\u89e3\u6790\u8d28\u91cfif(content.isEmpty()){\n log.warn(\"\u6587\u4ef6 {} \u89e3\u6790\u7ed3\u679c\u4e3a\u7a7a\uff0c\u53ef\u80fd\u662f\u626b\u63cf\u4ef6\u6216\u52a0\u5bc6\u6587\u6863\", originalFilename);returnParseResult.failure(\"\u89e3\u6790\u7ed3\u679c\u4e3a\u7a7a\uff0c\u53ef\u80fd\u662f\u626b\u63cf\u4ef6\u6216\u52a0\u5bc6\u6587\u6863\");}\n\n log.info(\"\u6587\u4ef6 {} \u89e3\u6790\u6210\u529f\uff0c\u63d0\u53d6\u6587\u672c\u957f\u5ea6: {}\", originalFilename, content.length());returnParseResult.success(mimeType, content, metadataMap);}catch(IOException e){\n log.error(\"\u8bfb\u53d6\u6587\u4ef6\u5931\u8d25: {}\", originalFilename, e);returnParseResult.failure(\"\u8bfb\u53d6\u6587\u4ef6\u5931\u8d25: \"+ e.getMessage());}catch(TikaException e){\n log.error(\"Tika \u89e3\u6790\u5931\u8d25: {}\", originalFilename, e);returnParseResult.failure(\"\u6587\u6863\u89e3\u6790\u5931\u8d25: \"+ e.getMessage());}catch(SAXException e){\n log.error(\"XML \u89e3\u6790\u5931\u8d25: {}\", originalFilename, e);returnParseResult.failure(\"\u6587\u6863\u7ed3\u6784\u89e3\u6790\u5931\u8d25: \"+ e.getMessage());}catch(Exception e){\n log.error(\"\u672a\u77e5\u9519\u8bef: {}\", originalFilename, e);returnParseResult.failure(\"\u89e3\u6790\u8fc7\u7a0b\u4e2d\u53d1\u751f\u672a\u77e5\u9519\u8bef: \"+ e.getMessage());}}\/**\n * \u4ec5\u68c0\u6d4b\u6587\u4ef6\u7684 MIME \u7c7b\u578b\n *\n * @param file \u4e0a\u4f20\u7684\u6587\u4ef6\n * @return MIME \u7c7b\u578b\u5b57\u7b26\u4e32\n *\/publicStringdetectMimeType(MultipartFile file)throwsIOException{try(InputStream inputStream = file.getInputStream()){return tika.detect(inputStream, file.getOriginalFilename());}}\/**\n * \u6e05\u6d17\u6587\u672c\u5185\u5bb9\n * - \u5c06\u591a\u4e2a\u8fde\u7eed\u7a7a\u767d\u5b57\u7b26\u66ff\u6362\u4e3a\u5355\u4e2a\u7a7a\u683c\n * - \u5c06\u591a\u4e2a\u8fde\u7eed\u6362\u884c\u66ff\u6362\u4e3a\u6700\u591a\u4e24\u4e2a\u6362\u884c\uff08\u4fdd\u7559\u6bb5\u843d\uff09\n * - \u53bb\u9664\u9996\u5c3e\u7a7a\u767d\n *\/privateStringcleanText(String text){if(text ==null){return\"\";}return text\n \/\/ \u5c06 \\r\\n \u7edf\u4e00\u4e3a \\n.replaceAll(\"\\\\r\\\\n\",\"\\n\")\/\/ \u5c06 \\r \u7edf\u4e00\u4e3a \\n.replaceAll(\"\\\\r\",\"\\n\")\/\/ \u53bb\u9664\u6bcf\u884c\u9996\u5c3e\u7684\u7a7a\u683c.replaceAll(\"(?m)^[ \\\\t]+|[ \\\\t]+$\",\"\")\/\/ \u5c06 3 \u4e2a\u53ca\u4ee5\u4e0a\u8fde\u7eed\u6362\u884c\u66ff\u6362\u4e3a 2 \u4e2a\u6362\u884c.replaceAll(\"\\\\n{3,}\",\"\\n\\n\")\/\/ \u5c06\u591a\u4e2a\u8fde\u7eed\u7a7a\u683c\/\u5236\u8868\u7b26\u66ff\u6362\u4e3a\u5355\u4e2a\u7a7a\u683c.replaceAll(\"[ \\\\t]+\",\" \")\/\/ \u53bb\u9664\u9996\u5c3e\u7a7a\u767d.trim();}\/**\n * \u4ece Metadata \u5bf9\u8c61\u63d0\u53d6\u5143\u6570\u636e\u4e3a Map\n *\/privateMap<String, String>extractMetadata(Metadata metadata){Map<String, String> result =newHashMap<>();for(String name : metadata.names()){String value = metadata.get(name);if(value !=null&&!value.isEmpty()){\n result.put(name, value);}}return result;}}<\/code><\/pre>\n\n\n\n2.2.1 \u6838\u5fc3\u4ee3\u7801\u89e3\u91ca<\/h5>\n\n\n\n
BodyContentHandler handler =newBodyContentHandler(MAX_TEXT_LENGTH);<\/code><\/pre>\n\n\n\n-1<\/code> \u8868\u793a\u65e0\u9650\u5236\uff08\u5371\u9669\uff0c\u53ef\u80fd OOM\uff09\u3002<\/p>\n\n\n\nMetadata metadata =newMetadata();\nmetadata.set(TikaCoreProperties.RESOURCE_NAME_KEY, originalFilename);<\/code><\/pre>\n\n\n\nMetadata<\/code> \u5bf9\u8c61\u4f1a\u5728\u89e3\u6790\u8fc7\u7a0b\u4e2d\u88ab\u586b\u5145\u3002\u63d0\u524d\u8bbe\u7f6e\u6587\u4ef6\u540d\u53ef\u4ee5\u5e2e\u52a9\u89e3\u6790\u5668\u505a\u66f4\u51c6\u786e\u7684\u5224\u65ad\u3002<\/p>\n\n\n\nParser parser =newAutoDetectParser();\nparser.parse(inputStream, handler, metadata, context);<\/code><\/pre>\n\n\n\nAutoDetectParser<\/code> \u4f1a\u81ea\u52a8\u6839\u636e MIME \u7c7b\u578b\u9009\u62e9\u5408\u9002\u7684\u5e95\u5c42\u89e3\u6790\u5668\uff08PDF \u7528 PDFParser\uff0cWord \u7528 OOXMLParser \u7b49\uff09\u3002<\/p>\n\n\n\n2.3 \u521b\u5efa Controller<\/h4>\n\n\n\n
@RestController@RequestMapping(\"\/api\/document\")publicclassDocumentController{@AutowiredprivateTikaParseService tikaParseService;\/**\n * \u89e3\u6790\u4e0a\u4f20\u7684\u6587\u6863\uff0c\u8fd4\u56de\u6587\u672c\u548c\u5143\u6570\u636e\n *\n * POST \/api\/document\/parse\n * Content-Type: multipart\/form-data\n *\/@PostMapping(value =\"\/parse\", consumes =MediaType.MULTIPART_FORM_DATA_VALUE)publicResponseEntity<ParseResult>parseDocument(@RequestParam(\"file\")MultipartFile file){ParseResult result = tikaParseService.parseFile(file);if(result.isSuccess()){returnResponseEntity.ok(result);}else{returnResponseEntity.badRequest().body(result);}}\/**\n * \u4ec5\u68c0\u6d4b\u6587\u4ef6\u7684 MIME \u7c7b\u578b\n *\n * POST \/api\/document\/detect\n * Content-Type: multipart\/form-data\n *\/@PostMapping(value =\"\/detect\", consumes =MediaType.MULTIPART_FORM_DATA_VALUE)publicResponseEntity<Map<String, String>>detectMimeType(@RequestParam(\"file\")MultipartFile file){try{String mimeType = tikaParseService.detectMimeType(file);Map<String, String> response =newHashMap<>();\n response.put(\"filename\", file.getOriginalFilename());\n response.put(\"mimeType\", mimeType);\n response.put(\"size\",String.valueOf(file.getSize()));returnResponseEntity.ok(response);}catch(IOException e){Map<String, String> error =newHashMap<>();\n error.put(\"error\",\"\u65e0\u6cd5\u68c0\u6d4b\u6587\u4ef6\u7c7b\u578b: \"+ e.getMessage());returnResponseEntity.badRequest().body(error);}}}<\/code><\/pre>\n\n\n\n2.4 \u914d\u7f6e\u6587\u4ef6\u4e0a\u4f20\u9650\u5236<\/h4>\n\n\n\n
src\/main\/resources\/application.yml<\/code> \u4e2d\uff1a<\/p>\n\n\n\nspring:application:name: tika-demo\n\n servlet:multipart:# \u5355\u4e2a\u6587\u4ef6\u6700\u5927\u5927\u5c0fmax-file-size: 50MB\n # \u6574\u4e2a\u8bf7\u6c42\u6700\u5927\u5927\u5c0fmax-request-size: 50MB\n\nserver:port:8080<\/code><\/pre>\n\n\n\n2.5 \u4e3b\u542f\u52a8\u7c7b<\/h4>\n\n\n\n
@SpringBootApplicationpublicclassTika3xApplication{publicstaticvoidmain(String[] args){SpringApplication.run(Tika3xApplication.class, args);}}<\/code><\/pre>\n\n\n\n3. \u9a8c\u8bc1\u4e0e\u6d4b\u8bd5<\/h3>\n\n\n\n
3.1 \u4f7f\u7528 curl \u6d4b\u8bd5<\/h4>\n\n\n\n
# \u521b\u5efa\u4e00\u4e2a\u6d4b\u8bd5\u6587\u4ef6\necho \"Hello World\"> test.txt\n\n# \u68c0\u6d4b\u7c7b\u578b\ncurl -XPOST \\\n -F\"file=@test.txt\" \\\n http://localhost:8080\/api\/document\/detect<\/code><\/pre>\n\n\n\n{\"filename\":\"test.txt\",\"mimeType\":\"text\/plain\",\"size\":\"12\"}<\/code><\/pre>\n\n\n\n# \u89e3\u6790\u6587\u672c\u6587\u4ef6\ncurl -XPOST \\\n -F\"file=@test.txt\" \\\n http://localhost:8080\/api\/document\/parse<\/code><\/pre>\n\n\n\n{\"success\":true,\"mimeType\":\"text\/plain\",\"content\":\"Hello World\",\"metadata\":{\"X-TIKA:Parsed-By\":\"org.apache.tika.parser.DefaultParser\",\"X-TIKA:Parsed-By-Full-Set\":\"org.apache.tika.parser.DefaultParser\",\"Content-Encoding\":\"ISO-8859-1\",\"resourceName\":\"test.txt\",\"X-TIKA:detectedEncoding\":\"ISO-8859-1\",\"X-TIKA:encodingDetector\":\"UniversalEncodingDetector\",\"Content-Type\":\"text\/plain; charset=ISO-8859-1\"},\"contentLength\":11,\"errorMessage\":null}<\/code><\/pre>\n\n\n\ncurl -XPOST \\\n -F\"file=@your-document.pdf\" \\\n http://localhost:8080\/api\/document\/parse<\/code><\/pre>\n\n\n\n3.2 \u4f7f\u7528 Postman \u6216 ApiFox \u6d4b\u8bd5<\/h4>\n\n\n\n
\n
POST<\/code><\/li>\n\n\n\nhttp:\/\/localhost:8080\/api\/document\/parse<\/code><\/li>\n\n\n\nBody<\/code> \u2192 form-data<\/code><\/li>\n\n\n\nfile<\/code>\uff0c\u7c7b\u578b\u9009\u62e9 File<\/code><\/li>\n\n\n\nSend<\/code><\/li>\n<\/ol>\n\n\n\n\u6570\u636e\u5206\u5757Chunk\u7b56\u7565<\/h1>\n\n\n\n
\u51e0\u4e2a\u5173\u952e\u53c2\u6570\uff1achunkSize\u3001overlap<\/h3>\n\n\n\n
chunkSize<\/code>\uff08\u5757\u5927\u5c0f\uff09\u548c overlap<\/code>\uff08\u91cd\u53e0\u91cf\uff09\u3002<\/p>\n\n\n\n1. \u56fa\u5b9a\u5927\u5c0f\u5206\u5757\uff08Fixed Size Chunking\uff09<\/h3>\n\n\n\n
1.1 \u539f\u7406<\/h4>\n\n\n\n
\u4f18\u7f3a\u70b9<\/h4>\n\n\n\n
\u7ef4\u5ea6<\/th> \u8bf4\u660e<\/th><\/tr> \u4f18\u70b9<\/td> \u5b9e\u73b0\u6781\u5176\u7b80\u5355\uff0c\u6027\u80fd\u597d\uff0c\u4e0d\u9700\u8981\u4efb\u4f55 NLP \u5904\u7406<\/td><\/tr> \u7f3a\u70b9<\/td> \u5b8c\u5168\u5ffd\u7565\u6587\u672c\u7ed3\u6784\uff0c\u5bb9\u6613\u628a\u53e5\u5b50\u3001\u6bb5\u843d\u4ece\u4e2d\u95f4\u5207\u65ad\uff0c\u5bfc\u81f4\u8bed\u4e49\u4e0d\u5b8c\u6574<\/td><\/tr> \u9002\u5408<\/td> \u6587\u672c\u7ed3\u6784\u4e0d\u91cd\u8981\u7684\u573a\u666f\uff0c\u6bd4\u5982\u65e5\u5fd7\u6587\u4ef6\u3001\u7eaf\u6570\u636e\u6587\u672c\uff1b\u6216\u8005\u4f5c\u4e3a\u5176\u4ed6\u7b56\u7565\u7684\u515c\u5e95\u65b9\u6848<\/td><\/tr> \u4e0d\u9002\u5408<\/td> \u6709\u660e\u786e\u6bb5\u843d\u7ed3\u6784\u7684\u6587\u6863\uff08\u77e5\u8bc6\u5e93\u3001\u4ea7\u54c1\u624b\u518c\u3001\u653f\u7b56\u6587\u4ef6\uff09\uff0c\u56e0\u4e3a\u5207\u65ad\u8bed\u4e49\u4f1a\u4e25\u91cd\u5f71\u54cd\u68c0\u7d22\u8d28\u91cf<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n 2. \u91cd\u53e0\u5206\u5757\uff08Overlapping Chunking\uff09<\/h3>\n\n\n\n
\u7ef4\u5ea6<\/th> \u8bf4\u660e<\/th><\/tr> \u4f18\u70b9<\/td> \u5b9e\u73b0\u7b80\u5355\uff0c\u6709\u6548\u7f13\u89e3\u8fb9\u754c\u5904\u7684\u8bed\u4e49\u65ad\u88c2\u95ee\u9898<\/td><\/tr> \u7f3a\u70b9<\/td> \u4ecd\u7136\u4e0d\u770b\u6587\u672c\u5185\u5bb9\uff0c\u53ea\u662f\u7528\u91cd\u53e0\u6765\u5f25\u8865\uff1boverlap \u4f1a\u5bfc\u81f4\u5b58\u50a8\u91cf\u589e\u52a0<\/td><\/tr> \u9002\u5408<\/td> \u5927\u591a\u6570\u901a\u7528\u573a\u666f\u7684\u5165\u95e8\u65b9\u6848\uff0c\u5c24\u5176\u662f\u4f60\u8fd8\u6ca1\u786e\u5b9a\u7528\u4ec0\u4e48\u7b56\u7565\u7684\u65f6\u5019<\/td><\/tr> \u4e0d\u9002\u5408<\/td> \u5bf9\u8bed\u4e49\u5b8c\u6574\u6027\u8981\u6c42\u5f88\u9ad8\u7684\u573a\u666f\uff0c\u6bd4\u5982\u6cd5\u5f8b\u6761\u6b3e\u3001\u5408\u540c\u6587\u672c<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n \u9012\u5f52\u5206\u5757\uff08Recursive Chunking\uff09<\/h3>\n\n\n\n
[\"\\n\\n\", \"\\n\", \"\u3002\", \"\uff0c\", \" \", \"\"]<\/code><\/pre>\n\n\n\n<\/figure>\n\n\n\n\u7ef4\u5ea6<\/th> \u8bf4\u660e<\/th><\/tr> \u4f18\u70b9<\/td> \u517c\u987e\u4e86\u8bed\u4e49\u5b8c\u6574\u6027\u548c\u5757\u5927\u5c0f\u63a7\u5236\uff0c\u662f\u76ee\u524d\u6700\u901a\u7528\u7684\u5206\u5757\u7b56\u7565<\/td><\/tr> \u7f3a\u70b9<\/td> \u5206\u9694\u7b26\u5217\u8868\u9700\u8981\u6839\u636e\u8bed\u8a00\u8c03\u6574\uff08\u4e2d\u6587\u548c\u82f1\u6587\u7684\u6807\u70b9\u4e0d\u540c\uff09\uff1b\u4f9d\u8d56\u6587\u672c\u4e2d\u5b58\u5728\u5408\u7406\u7684\u5206\u9694\u7b26<\/td><\/tr> \u9002\u5408<\/td> \u7edd\u5927\u591a\u6570\u573a\u666f\uff0c\u5c24\u5176\u662f\u4f60\u4e0d\u786e\u5b9a\u8be5\u7528\u4ec0\u4e48\u7b56\u7565\u7684\u65f6\u5019\uff0c\u9012\u5f52\u5206\u5757\u662f\u6700\u5b89\u5168\u7684\u9ed8\u8ba4\u9009\u62e9<\/td><\/tr> \u4e0d\u9002\u5408<\/td> \u5bf9\u5206\u5757\u6709\u7279\u6b8a\u8981\u6c42\u7684\u573a\u666f\uff0c\u6bd4\u5982\u4ee3\u7801\u6587\u4ef6\uff08\u9700\u8981\u6309\u51fd\u6570\/\u7c7b\u6765\u5207\uff09\u3001\u8868\u683c\u6570\u636e\uff08\u9700\u8981\u6309\u884c\u6765\u5207\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n \u8bed\u4e49\u5206\u5757\uff08Semantic Chunking\uff09<\/h3>\n\n\n\n
\u7ef4\u5ea6<\/th> Embedding \u8bed\u4e49\u5206\u5757<\/th> LLM \u8f85\u52a9\u5206\u5757<\/th><\/tr> \u539f\u7406<\/strong><\/td> \u8ba1\u7b97\u76f8\u90bb\u53e5\u5b50\u7684\u5411\u91cf\u76f8\u4f3c\u5ea6<\/td> \u5927\u6a21\u578b\u76f4\u63a5\u7406\u89e3\u6587\u672c\u8bed\u4e49<\/td><\/tr> \u5206\u5757\u8d28\u91cf<\/strong><\/td> \u4f9d\u8d56 Embedding \u6a21\u578b\u8d28\u91cf<\/td> \u901a\u5e38\u66f4\u51c6\u786e\uff0c\u80fd\u5904\u7406\u590d\u6742\u8bed\u5883<\/td><\/tr> \u901f\u5ea6<\/strong><\/td> \u5feb\uff08\u6beb\u79d2\u7ea7\uff09<\/td> \u6162\uff08\u79d2\u7ea7\uff09<\/td><\/tr> \u6210\u672c<\/strong><\/td> \u4f4e<\/td> \u9ad8<\/td><\/tr> \u9002\u7528\u573a\u666f<\/strong><\/td> \u5927\u6279\u91cf\u6587\u6863\u5904\u7406<\/td> \u9ad8\u4ef7\u503c\u6587\u6863\u3001\u9700\u8981\u7cbe\u7ec6\u5206\u5757<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n \u7ef4\u5ea6<\/th> \u8bf4\u660e<\/th><\/tr> \u4f18\u70b9<\/td> \u5207\u5272\u70b9\u57fa\u4e8e\u8bed\u4e49\u800c\u975e\u89c4\u5219\uff0c\u5206\u5757\u8d28\u91cf\u6700\u9ad8\uff0c\u6bcf\u4e2a\u5757\u7684\u4e3b\u9898\u9ad8\u5ea6\u5185\u805a<\/td><\/tr> \u7f3a\u70b9<\/td> \u9700\u8981\u8c03\u7528 Embedding \u6216\u8005 Chat \u6a21\u578b\uff0c\u6709\u989d\u5916\u7684\u8ba1\u7b97\u6210\u672c\u548c\u5ef6\u8fdf\uff1b\u9608\u503c\u9700\u8981\u8c03\u53c2\uff1b\u5bf9\u6a21\u578b\u7684\u8d28\u91cf\u6709\u4f9d\u8d56<\/td><\/tr> \u9002\u5408<\/td> \u5bf9\u68c0\u7d22\u7cbe\u5ea6\u8981\u6c42\u5f88\u9ad8\u7684\u573a\u666f\uff0c\u6bd4\u5982\u6cd5\u5f8b\u6587\u6863\u95ee\u7b54\u3001\u533b\u7597\u77e5\u8bc6\u5e93\u3001\u91d1\u878d\u5408\u89c4\u6587\u6863<\/td><\/tr> \u4e0d\u9002\u5408<\/td> \u6587\u6863\u91cf\u7279\u522b\u5927\u4e14\u5bf9\u5ef6\u8fdf\u654f\u611f\u7684\u573a\u666f\uff1b\u6587\u672c\u672c\u8eab\u7ed3\u6784\u5df2\u7ecf\u5f88\u6e05\u6670\u7684\u573a\u666f\uff08\u7528\u9012\u5f52\u5206\u5757\u5c31\u591f\u4e86\uff0c\u6ca1\u5fc5\u8981\u4e0a\u8bed\u4e49\u5206\u5757\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n 5. \u6df7\u5408\u5206\u5757\uff08Hybrid Chunking\uff09<\/h3>\n\n\n\n
\n
<\/figure>\n\n\n\nchunkSize<\/code> \u6ca1\u8c03\u5bf9\uff0c\u8fd8\u6709\u53ef\u80fd\u662f\u4e0a\u6e38\u62bd\u53d6\u51fa\u6765\u7684\u6587\u672c\u5c31\u5df2\u7ecf\u201c\u810f\u201d\u4e86<\/strong> \u2014\u2014\u5c24\u5176\u662f PDF \u8fd9\u79cd\u683c\u5f0f\uff1a<\/p>\n\n\n\n\n
chunkSize<\/code> \u8c03\u5927\uff0cA \u7c7b\u95ee\u9898\u66f4\u5bb9\u6613\u53ec\u56de\u5b8c\u6574\u4e0a\u4e0b\u6587\uff0c\u4f46 B \u7c7b\u95ee\u9898\u7684\u68c0\u7d22\u7cbe\u5ea6\u53ef\u80fd\u4e0b\u964d\uff1bchunkSize<\/code> \u8c03\u5c0f\uff0cB \u7c7b\u95ee\u9898\u66f4\u7cbe\u51c6\u4e86\uff0cA \u7c7b\u95ee\u9898\u53c8\u5bb9\u6613\u88ab\u5207\u65ad\u3002<\/p>\n\n\n\n