{"id":89708,"date":"2026-08-03T14:56:32","date_gmt":"2026-08-03T06:56:32","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/89708.html"},"modified":"2026-08-03T14:56:32","modified_gmt":"2026-08-03T06:56:32","slug":"langgraph-%e5%a4%9a%e6%99%ba%e8%83%bd%e4%bd%93%e5%ae%9e%e6%88%98%ef%bc%9a%e6%90%ad%e5%bb%ba%e7%94%b5%e5%8a%9b%e6%94%bf%e7%ad%96%e8%b7%9f%e8%b8%aa-agent%ef%bc%8c%e5%ae%9e%e7%8e%b0%e7%bd%91%e9%a1%b5","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/89708.html","title":{"rendered":"LangGraph \u591a\u667a\u80fd\u4f53\u5b9e\u6218\uff1a\u642d\u5efa\u7535\u529b\u653f\u7b56\u8ddf\u8e2a Agent\uff0c\u5b9e\u73b0\u7f51\u9875\u722c\u866b\u3001OCR \u4e0e PDF \u6587\u6863\u81ea\u52a8\u5316\u89e3\u6790"},"content":{"rendered":"

<\/h2>\n

\u6587\u7ae0\u524d\u8a00<\/h3>\n

\u968f\u7740\u56fd\u5185\u7535\u529b\u5e02\u573a\u5316\u6539\u9769\u6301\u7eed\u63a8\u8fdb，\u5404\u7701\u7535\u529b\u4ea4\u6613\u4e2d\u5fc3\u6301\u7eed\u53d1\u5e03\u4ea4\u6613\u89c4\u5219\u3001\u653f\u7b56\u6587\u4ef6\u3001\u5e02\u573a\u901a\u77e5\u3002\u7535\u529b\u4ece\u4e1a\u8005\u9700\u8981\u6301\u7eed\u8ddf\u8e2a\u6d77\u91cfPDF\u516c\u544a\u3001\u7f51\u9875\u653f\u7b56\u6587\u672c，\u4eba\u5de5\u6574\u7406\u3001\u5bf9\u6bd4\u653f\u7b56\u5dee\u5f02\u3001\u63d0\u53d6\u6838\u5fc3\u6761\u6b3e\u6210\u672c\u6781\u9ad8\u3002\u4f20\u7edf\u5355\u4e00\u5927\u6a21\u578b\u5e94\u7528\u65e0\u6cd5\u5b8c\u6210\u7f51\u9875\u91c7\u96c6\u2192\u6587\u6863\u89e3\u6790\u2192\u6587\u672c\u62bd\u53d6\u2192\u77e5\u8bc6\u5165\u5e93\u2192\u667a\u80fd\u5206\u6790\u5b8c\u6574\u6d41\u6c34\u7ebf\u3002<\/p>\n

\u672c\u6587\u57fa\u4e8eLangGraph\u6784\u5efa\u591a\u667a\u80fd\u4f53\u534f\u540c\u7cfb\u7edf，\u62c6\u5206\u722c\u866b\u667a\u80fd\u4f53\u3001\u6587\u6863\u89e3\u6790\u667a\u80fd\u4f53\u3001\u89c4\u5219\u62bd\u53d6\u667a\u80fd\u4f53\u3001\u77e5\u8bc6\u5e93\u66f4\u65b0\u667a\u80fd\u4f53\u3002\u6574\u5957\u5de5\u4f5c\u6d41\u81ea\u52a8\u5b8c\u6210\u7f51\u9875\u6293\u53d6\u3001PDF\u89e3\u6790\u3001\u56fe\u7247OCR\u8bc6\u522b\u3001\u653f\u7b56\u6761\u6b3e\u7ed3\u6784\u5316\u62bd\u53d6，\u7ed3\u5408RAG\u5411\u91cf\u5b58\u50a8\u5b9e\u73b0\u7535\u529b\u653f\u7b56\u6301\u7eed\u8ddf\u8e2a\u3002\u6574\u5957\u4ee3\u7801\u53ef\u76f4\u63a5\u5de5\u7a0b\u6539\u9020，\u9002\u914d\u80fd\u6e90\u3001\u7535\u529b\u4ea4\u6613\u4e1a\u52a1\u573a\u666f\u3002<\/p>\n

\u6280\u672f\u6808：Python3.10+ | LangGraph | LangChain | Pytesseract(OCR) | PyPDF2 | BeautifulSoup | Chroma\u5411\u91cf\u5e93 | OpenAI\u517c\u5bb9\u5927\u6a21\u578b\u63a5\u53e3<\/p>\n

\u4e00\u3001\u7cfb\u7edf\u6574\u4f53\u67b6\u6784\u8bbe\u8ba1<\/h3>\n

1.1 \u591a\u667a\u80fd\u4f53\u89d2\u8272\u5212\u5206<\/h4>\n

\u6211\u4eec\u5c06\u6574\u4e2a\u4e1a\u52a1\u6d41\u7a0b\u62c6\u89e3\u4e3a4\u4e2a\u72ec\u7acbAgent，\u7531LangGraph\u8d1f\u8d23\u72b6\u6001\u6d41\u8f6c\u3001\u8def\u7531\u8c03\u5ea6：<\/p>\n

  • \u722c\u866bAgent：\u76ee\u6807\u7f51\u9875\u53d1\u8d77\u8bf7\u6c42，\u6293\u53d6\u7535\u529b\u653f\u7b56\u516c\u544a\u94fe\u63a5，\u8fc7\u6ee4\u91cd\u590d\u6587\u6863\u5730\u5740<\/li>\n
  • \u6587\u6863\u89e3\u6790Agent：\u533a\u5206\u7f51\u9875\u6587\u672c\u3001PDF\u6587\u4ef6\u3001\u56fe\u7247\u9644\u4ef6；PDF\u6587\u672c\u63d0\u53d6，\u56fe\u7247\u6267\u884cOCR\u8bc6\u522b<\/li>\n
  • \u89c4\u5219\u62bd\u53d6Agent：\u8c03\u7528\u5927\u6a21\u578b，\u4ece\u539f\u59cb\u6587\u6863\u4e2d\u7ed3\u6784\u5316\u63d0\u53d6\u653f\u7b56\u751f\u6548\u65f6\u95f4\u3001\u4ea4\u6613\u89c4\u5219\u3001\u653f\u7b56\u8981\u70b9\u3001\u53d8\u66f4\u6761\u6b3e<\/li>\n
  • \u77e5\u8bc6\u5e93Agent：\u5c06\u7ed3\u6784\u5316\u6570\u636e\u5411\u91cf\u5316，\u5b58\u5165\u5411\u91cf\u6570\u636e\u5e93，\u5b8c\u6210\u7535\u529b\u4ea4\u6613\u77e5\u8bc6\u5e93\u66f4\u65b0<\/li>\n

    1.2 \u5de5\u4f5c\u6d41\u6d41\u8f6c\u903b\u8f91<\/h4>\n

    \u8d77\u59cb\u8282\u70b9 \u2192 \u722c\u866bAgent \u2192 \u6587\u6863\u4e0b\u8f7d\u5206\u53d1 \u2192 \u6587\u6863\u89e3\u6790Agent（\u5206\u652f：\u7f51\u9875\/PDF\/OCR\u56fe\u7247）
    \n\u2192 \u89c4\u5219\u62bd\u53d6Agent \u2192 \u77e5\u8bc6\u5e93\u5199\u5165Agent \u2192 \u4efb\u52a1\u7ed3\u675f
    \n\u51fa\u73b0\u5f02\u5e38\u81ea\u52a8\u91cd\u8bd5，\u89e3\u6790\u5931\u8d25\u6587\u6863\u6807\u8bb0，\u5b58\u5165\u5f02\u5e38\u961f\u5217\u3002<\/p>\n

    1.3 \u72b6\u6001\u5b9a\u4e49（State）<\/h4>\n

    LangGraph\u4f9d\u9760State\u5728\u5404\u4e2a\u8282\u70b9\u4e4b\u95f4\u4f20\u9012\u5168\u5c40\u6570\u636e，\u5305\u542b：\u5f85\u6293\u53d6URL\u5217\u8868\u3001\u539f\u59cb\u6587\u6863\u5185\u5bb9\u3001\u7ed3\u6784\u5316\u653f\u7b56\u4fe1\u606f\u3001\u9519\u8bef\u65e5\u5fd7\u3002<\/p>\n

    \u4e8c\u3001\u73af\u5883\u4f9d\u8d56\u5b89\u88c5<\/h3>\n

    \u5148\u6267\u884c\u4f9d\u8d56\u5305\u5b89\u88c5<\/p>\n

    pip install<\/span> langgraph langchain langchain-openai chromadb beautifulsoup4 requests pypdf2 pytesseract python-dotenv<\/p>\n

    \u6ce8\u610f：OCR\u8bc6\u522b\u9700\u8981\u672c\u5730\u5b89\u88c5Tesseract-OCR\u7a0b\u5e8f，\u5e76\u914d\u7f6e\u73af\u5883\u53d8\u91cf\u3002Windows\u7528\u6237\u4e0b\u8f7d\u5b89\u88c5\u5305，Linux\u6267\u884csudo apt install tesseract-ocr\u3002<\/p>\n

    \u4e09\u3001\u5b8c\u6574\u4ee3\u7801\u5b9e\u73b0<\/h3>\n

    3.1 \u5168\u5c40\u72b6\u6001\u5b9a\u4e49\u4e0e\u57fa\u7840\u521d\u59cb\u5316<\/h4>\n

    \u65b0\u5efapower_policy_agent.py<\/p>\n

    import<\/span> os
    \nimport<\/span> requests
    \nimport<\/span> pytesseract
    \nfrom<\/span> PyPDF2 import<\/span> PdfReader
    \nfrom<\/span> bs4 import<\/span> BeautifulSoup
    \nfrom<\/span> typing import<\/span> TypedDict,<\/span> Annotated,<\/span> Sequence,<\/span> Any
    \nimport<\/span> operator
    \nfrom<\/span> langgraph.<\/span>graph import<\/span> StateGraph,<\/span> END
    \nfrom<\/span> langchain_openai import<\/span> ChatOpenAI
    \nfrom<\/span> langchain.<\/span>vectorstores import<\/span> Chroma
    \nfrom<\/span> langchain.<\/span>embeddings import<\/span> OpenAIEmbeddings
    \nfrom<\/span> langchain.<\/span>prompts import<\/span> PromptTemplate
    \nfrom<\/span> dotenv import<\/span> load_dotenv<\/p>\n

    load_dotenv(<\/span>)<\/span><\/p>\n

    # \u914d\u7f6e\u5927\u6a21\u578b，\u652f\u6301\u901a\u4e49\u5343\u95ee\u3001DeepSeek\u7b49\u517c\u5bb9OpenAI\u63a5\u53e3\u6a21\u578b<\/span>
    \nllm =<\/span> ChatOpenAI(<\/span>
    \n model=<\/span>"deepseek-chat"<\/span>,<\/span>
    \n api_key=<\/span>os.<\/span>getenv(<\/span>"LLM_API_KEY"<\/span>)<\/span>,<\/span>
    \n base_url=<\/span>os.<\/span>getenv(<\/span>"LLM_BASE_URL"<\/span>)<\/span>,<\/span>
    \n temperature=<\/span>0.1<\/span>
    \n)<\/span><\/p>\n

    # \u5411\u91cf\u6570\u636e\u5e93\u521d\u59cb\u5316<\/span>
    \nembedding =<\/span> OpenAIEmbeddings(<\/span>
    \n model=<\/span>"text-embedding"<\/span>,<\/span>
    \n api_key=<\/span>os.<\/span>getenv(<\/span>"EMBED_KEY"<\/span>)<\/span>,<\/span>
    \n base_url=<\/span>os.<\/span>getenv(<\/span>"EMBED_BASE"<\/span>)<\/span>
    \n)<\/span>
    \nvector_db =<\/span> Chroma(<\/span>persist_directory=<\/span>".\/power_policy_db"<\/span>,<\/span> embedding_function=<\/span>embedding)<\/span><\/p>\n

    # ========== \u5b9a\u4e49\u5168\u5c40\u72b6\u6001 ==========<\/span>
    \nclass<\/span> AgentState<\/span>(<\/span>TypedDict)<\/span>:<\/span>
    \n url_list:<\/span> Annotated[<\/span>list<\/span>[<\/span>str<\/span>]<\/span>,<\/span> operator.<\/span>add]<\/span> # \u9700\u8981\u6293\u53d6\u7684\u653f\u7b56\u7f51\u9875\u94fe\u63a5<\/span>
    \n raw_documents:<\/span> Annotated[<\/span>list<\/span>[<\/span>dict<\/span>]<\/span>,<\/span> operator.<\/span>add]<\/span> # \u539f\u59cb\u6587\u6863\u6570\u636e {url, content, doc_type}<\/span>
    \n structured_policy:<\/span> Annotated[<\/span>list<\/span>[<\/span>dict<\/span>]<\/span>,<\/span> operator.<\/span>add]<\/span> # \u5927\u6a21\u578b\u62bd\u53d6\u7ed3\u6784\u5316\u653f\u7b56<\/span>
    \n error_log:<\/span> Annotated[<\/span>list<\/span>[<\/span>str<\/span>]<\/span>,<\/span> operator.<\/span>add]<\/span> # \u9519\u8bef\u65e5\u5fd7<\/span><\/p>\n

    3.2 Agent\u8282\u70b91：\u722c\u866b\u667a\u80fd\u4f53（CrawlerAgent）<\/h4>\n

    \u8d1f\u8d23\u8bbf\u95ee\u7535\u529b\u4ea4\u6613\u7f51\u7ad9，\u6293\u53d6\u653f\u7b56\u9875\u9762\u5185\u5bb9，\u533a\u5206\u666e\u901a\u7f51\u9875\u3001PDF\u9644\u4ef6\u94fe\u63a5\u3002<\/p>\n

    def<\/span> crawler_agent<\/span>(<\/span>state:<\/span> AgentState)<\/span> –<\/span>><\/span> AgentState:<\/span>
    \n """\u722c\u866b\u667a\u80fd\u4f53：\u904d\u5386url，\u83b7\u53d6\u7f51\u9875\u5185\u5bb9，\u8bc6\u522bPDF\u9644\u4ef6"""<\/span>
    \n new_raw_docs =<\/span> [<\/span>]<\/span>
    \n error =<\/span> [<\/span>]<\/span>
    \n headers =<\/span> {<\/span>
    \n "User-Agent"<\/span>:<\/span> "Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36"<\/span>
    \n }<\/span>
    \n for<\/span> url in<\/span> state[<\/span>"url_list"<\/span>]<\/span>:<\/span>
    \n try<\/span>:<\/span>
    \n resp =<\/span> requests.<\/span>get(<\/span>url,<\/span> headers=<\/span>headers,<\/span> timeout=<\/span>15<\/span>)<\/span>
    \n resp.<\/span>raise_for_status(<\/span>)<\/span>
    \n # \u5224\u65ad\u662f\u5426\u4e3aPDF\u6587\u4ef6<\/span>
    \n if<\/span> url.<\/span>endswith(<\/span>".pdf"<\/span>)<\/span> or<\/span> "application\/pdf"<\/span> in<\/span> resp.<\/span>headers.<\/span>get(<\/span>"Content-Type"<\/span>,<\/span> ""<\/span>)<\/span>:<\/span>
    \n new_raw_docs.<\/span>append(<\/span>{<\/span>
    \n "source_url"<\/span>:<\/span> url,<\/span>
    \n "doc_type"<\/span>:<\/span> "pdf"<\/span>,<\/span>
    \n "binary_data"<\/span>:<\/span> resp.<\/span>content,<\/span>
    \n "text"<\/span>:<\/span> ""<\/span>
    \n }<\/span>)<\/span>
    \n else<\/span>:<\/span>
    \n soup =<\/span> BeautifulSoup(<\/span>resp.<\/span>text,<\/span> "html.parser"<\/span>)<\/span>
    \n # \u6e05\u9664\u7f51\u9875\u6807\u7b7e，\u63d0\u53d6\u6b63\u6587<\/span>
    \n text =<\/span> soup.<\/span>get_text(<\/span>strip=<\/span>True<\/span>,<\/span> separator=<\/span>"\\\\n"<\/span>)<\/span>
    \n new_raw_docs.<\/span>append(<\/span>{<\/span>
    \n "source_url"<\/span>:<\/span> url,<\/span>
    \n "doc_type"<\/span>:<\/span> "webpage"<\/span>,<\/span>
    \n "binary_data"<\/span>:<\/span> None<\/span>,<\/span>
    \n "text"<\/span>:<\/span> text
    \n }<\/span>)<\/span>
    \n except<\/span> Exception as<\/span> e:<\/span>
    \n error.<\/span>append(<\/span>f"\u6293\u53d6\u5931\u8d25 <\/span>{<\/span>url}<\/span><\/span>: <\/span>{<\/span>str<\/span>(<\/span>e)<\/span>}<\/span><\/span>"<\/span><\/span>)<\/span>
    \n return<\/span> {<\/span>"raw_documents"<\/span>:<\/span> new_raw_docs,<\/span> "error_log"<\/span>:<\/span> error}<\/span><\/p>\n

    3.3 Agent\u8282\u70b92：\u6587\u6863\u89e3\u6790\u667a\u80fd\u4f53（DocumentParserAgent）<\/h4>\n

    \u5206\u6d41\u5904\u7406\u4e09\u7c7b\u6570\u636e：\u7f51\u9875\u6587\u672c\u76f4\u63a5\u4f7f\u7528；PDF\u6587\u672c\u63d0\u53d6；\u56fe\u7247\u9644\u4ef6\u8c03\u7528OCR\u8bc6\u522b\u3002<\/p>\n

    def<\/span> document_parser_agent<\/span>(<\/span>state:<\/span> AgentState)<\/span> –<\/span>><\/span> AgentState:<\/span>
    \n """\u6587\u6863\u89e3\u6790Agent：PDF\u89e3\u6790 + OCR\u56fe\u7247\u8bc6\u522b"""<\/span>
    \n processed_docs =<\/span> [<\/span>]<\/span>
    \n error =<\/span> [<\/span>]<\/span>
    \n for<\/span> doc in<\/span> state[<\/span>"raw_documents"<\/span>]<\/span>:<\/span>
    \n try<\/span>:<\/span>
    \n if<\/span> doc[<\/span>"doc_type"<\/span>]<\/span> ==<\/span> "webpage"<\/span>:<\/span>
    \n processed_docs.<\/span>append(<\/span>doc)<\/span>
    \n elif<\/span> doc[<\/span>"doc_type"<\/span>]<\/span> ==<\/span> "pdf"<\/span>:<\/span>
    \n # PDF\u89e3\u6790<\/span>
    \n from<\/span> io import<\/span> BytesIO
    \n pdf_stream =<\/span> BytesIO(<\/span>doc[<\/span>"binary_data"<\/span>]<\/span>)<\/span>
    \n reader =<\/span> PdfReader(<\/span>pdf_stream)<\/span>
    \n full_text =<\/span> ""<\/span>
    \n for<\/span> page in<\/span> reader.<\/span>pages:<\/span>
    \n page_text =<\/span> page.<\/span>extract_text(<\/span>)<\/span>
    \n if<\/span> page_text:<\/span>
    \n full_text +=<\/span> page_text +<\/span> "\\\\n"<\/span>
    \n doc[<\/span>"text"<\/span>]<\/span> =<\/span> full_text
    \n processed_docs.<\/span>append(<\/span>doc)<\/span>
    \n elif<\/span> doc[<\/span>"doc_type"<\/span>]<\/span> ==<\/span> "image"<\/span>:<\/span>
    \n # OCR\u56fe\u7247\u8bc6\u522b，\u9002\u7528\u4e8e\u626b\u63cf\u7248\u653f\u7b56\u6587\u4ef6<\/span>
    \n from<\/span> PIL import<\/span> Image
    \n from<\/span> io import<\/span> BytesIO
    \n img =<\/span> Image.<\/span>open<\/span>(<\/span>BytesIO(<\/span>doc[<\/span>"binary_data"<\/span>]<\/span>)<\/span>)<\/span>
    \n ocr_text =<\/span> pytesseract.<\/span>image_to_string(<\/span>img,<\/span> lang=<\/span>"chi_sim"<\/span>)<\/span>
    \n doc[<\/span>"text"<\/span>]<\/span> =<\/span> ocr_text
    \n processed_docs.<\/span>append(<\/span>doc)<\/span>
    \n except<\/span> Exception as<\/span> e:<\/span>
    \n error.<\/span>append(<\/span>f"\u6587\u6863\u89e3\u6790\u5931\u8d25 <\/span>{<\/span>doc[<\/span>'source_url'<\/span>]<\/span>}<\/span><\/span>: <\/span>{<\/span>str<\/span>(<\/span>e)<\/span>}<\/span><\/span>"<\/span><\/span>)<\/span>
    \n return<\/span> {<\/span>"raw_documents"<\/span>:<\/span> processed_docs,<\/span> "error_log"<\/span>:<\/span> error}<\/span><\/p>\n

    3.4 Agent\u8282\u70b93：\u653f\u7b56\u62bd\u53d6\u667a\u80fd\u4f53（PolicyExtractAgent）<\/h4>\n

    \u5229\u7528\u5927\u6a21\u578b\u4ece\u975e\u7ed3\u6784\u5316\u6587\u672c\u63d0\u53d6\u7535\u529b\u653f\u7b56\u7ed3\u6784\u5316\u4fe1\u606f，\u4e5f\u662f\u672c\u9879\u76ee\u6838\u5fc3\u4e1a\u52a1\u8282\u70b9\u3002<\/p>\n

    extract_prompt =<\/span> PromptTemplate(<\/span>
    \n input_variables=<\/span>[<\/span>"document_text"<\/span>]<\/span>,<\/span>
    \n template=<\/span>"""
    \n\u4f60\u662f\u7535\u529b\u5e02\u573a\u653f\u7b56\u5206\u6790\u5e08，\u8bf7\u9605\u8bfb\u4e0b\u9762\u7535\u529b\u4ea4\u6613\u653f\u7b56\u6587\u6863，\u4e25\u683c\u8f93\u51faJSON\u683c\u5f0f，\u4e0d\u8981\u989d\u5916\u89e3\u91ca\u3002
    \n\u6587\u6863\u5185\u5bb9：
    \n{document_text}<\/p>\n

    \u8f93\u51faJSON\u5b57\u6bb5\u8981\u6c42：
    \n{{
    \n"province": "\u653f\u7b56\u6240\u5c5e\u7701\u4efd",
    \n"policy_name": "\u653f\u7b56\u6587\u4ef6\u5168\u79f0",
    \n"effective_date": "\u751f\u6548\u65f6\u95f4",
    \n"publish_date": "\u53d1\u5e03\u65f6\u95f4",
    \n"core_rules": ["\u89c4\u5219\u8981\u70b91","\u89c4\u5219\u8981\u70b92"],
    \n"target_subject": "\u9002\u7528\u5e02\u573a\u4e3b\u4f53（\u53d1\u7535\u4f01\u4e1a\/\u552e\u7535\u516c\u53f8\/\u7535\u529b\u7528\u6237）",
    \n"change_content": "\u76f8\u8f83\u4e8e\u65e7\u653f\u7b56\u7684\u53d8\u66f4\u5185\u5bb9，\u5982\u679c\u65e0\u5bf9\u6bd4\u586b\u6682\u65e0",
    \n"impact_analysis": "\u8be5\u653f\u7b56\u5bf9\u7535\u529b\u4ea4\u6613\u6536\u76ca\u3001\u62a5\u4ef7\u7b56\u7565\u5e26\u6765\u7684\u5f71\u54cd\u7b80\u8ff0"
    \n}}
    \n\u53ea\u8fd4\u56de\u6807\u51c6JSON，\u7981\u6b62\u589e\u52a0markdown\u3001\u6ce8\u91ca\u3002
    \n"""<\/span>
    \n)<\/span><\/p>\n

    def<\/span> policy_extract_agent<\/span>(<\/span>state:<\/span> AgentState)<\/span> –<\/span>><\/span> AgentState:<\/span>
    \n """\u5927\u6a21\u578b\u62bd\u53d6\u653f\u7b56\u7ed3\u6784\u5316\u4fe1\u606f"""<\/span>
    \n structured_result =<\/span> [<\/span>]<\/span>
    \n error =<\/span> [<\/span>]<\/span>
    \n for<\/span> doc in<\/span> state[<\/span>"raw_documents"<\/span>]<\/span>:<\/span>
    \n text =<\/span> doc[<\/span>"text"<\/span>]<\/span>
    \n if<\/span> len<\/span>(<\/span>text.<\/span>strip(<\/span>)<\/span>)<\/span> <<\/span> 20<\/span>:<\/span>
    \n error.<\/span>append(<\/span>f"\u6587\u6863<\/span>{<\/span>doc[<\/span>'source_url'<\/span>]<\/span>}<\/span><\/span>\u6709\u6548\u6587\u672c\u8fc7\u77ed，\u8df3\u8fc7\u62bd\u53d6"<\/span><\/span>)<\/span>
    \n continue<\/span>
    \n try<\/span>:<\/span>
    \n chain =<\/span> extract_prompt |<\/span> llm
    \n resp =<\/span> chain.<\/span>invoke(<\/span>{<\/span>"document_text"<\/span>:<\/span> text[<\/span>:<\/span>12000<\/span>]<\/span>}<\/span>)<\/span> # \u622a\u65ad\u8d85\u957f\u6587\u672c<\/span>
    \n json_str =<\/span> resp.<\/span>content.<\/span>strip(<\/span>)<\/span>
    \n import<\/span> json
    \n policy_data =<\/span> json.<\/span>loads(<\/span>json_str)<\/span>
    \n policy_data[<\/span>"source_url"<\/span>]<\/span> =<\/span> doc[<\/span>"source_url"<\/span>]<\/span>
    \n policy_data[<\/span>"original_text"<\/span>]<\/span> =<\/span> text[<\/span>:<\/span>5000<\/span>]<\/span>
    \n structured_result.<\/span>append(<\/span>policy_data)<\/span>
    \n except<\/span> Exception as<\/span> e:<\/span>
    \n error.<\/span>append(<\/span>f"\u653f\u7b56\u62bd\u53d6\u5931\u8d25 <\/span>{<\/span>doc[<\/span>'source_url'<\/span>]<\/span>}<\/span><\/span>: <\/span>{<\/span>str<\/span>(<\/span>e)<\/span>}<\/span><\/span>"<\/span><\/span>)<\/span>
    \n return<\/span> {<\/span>"structured_policy"<\/span>:<\/span> structured_result,<\/span> "error_log"<\/span>:<\/span> error}<\/span><\/p>\n

    3.5 Agent\u8282\u70b94：\u77e5\u8bc6\u5e93\u5165\u5e93\u667a\u80fd\u4f53（KnowledgeBaseAgent）<\/h4>\n

    \u5c06\u7ed3\u6784\u5316\u653f\u7b56\u5b58\u5165\u5411\u91cf\u5e93，\u6784\u5efa\u7535\u529b\u4ea4\u6613\u77e5\u8bc6\u5e93，\u652f\u6301\u540e\u7eedRAG\u68c0\u7d22\u3002<\/p>\n

    def<\/span> knowledge_base_agent<\/span>(<\/span>state:<\/span> AgentState)<\/span> –<\/span>><\/span> AgentState:<\/span>
    \n """\u5c06\u7ed3\u6784\u5316\u653f\u7b56\u5199\u5165\u5411\u91cf\u77e5\u8bc6\u5e93"""<\/span>
    \n error =<\/span> [<\/span>]<\/span>
    \n texts =<\/span> [<\/span>]<\/span>
    \n metadatas =<\/span> [<\/span>]<\/span>
    \n for<\/span> policy in<\/span> state[<\/span>"structured_policy"<\/span>]<\/span>:<\/span>
    \n content =<\/span> f"""
    \n\u7701\u4efd：<\/span>{<\/span>policy[<\/span>'province'<\/span>]<\/span>}<\/span><\/span>
    \n\u653f\u7b56\u540d\u79f0：<\/span>{<\/span>policy[<\/span>'policy_name'<\/span>]<\/span>}<\/span><\/span>
    \n\u751f\u6548\u65f6\u95f4：<\/span>{<\/span>policy[<\/span>'effective_date'<\/span>]<\/span>}<\/span><\/span>
    \n\u6838\u5fc3\u89c4\u5219：<\/span>{<\/span>";"<\/span>.<\/span>join(<\/span>policy[<\/span>'core_rules'<\/span>]<\/span>)<\/span>}<\/span><\/span>
    \n\u5f71\u54cd\u8bc4\u4f30：<\/span>{<\/span>policy[<\/span>'impact_analysis'<\/span>]<\/span>}<\/span><\/span>
    \n """<\/span><\/span>
    \n texts.<\/span>append(<\/span>content)<\/span>
    \n metadatas.<\/span>append(<\/span>{<\/span>
    \n "source_url"<\/span>:<\/span> policy[<\/span>"source_url"<\/span>]<\/span>,<\/span>
    \n "province"<\/span>:<\/span> policy[<\/span>"province"<\/span>]<\/span>,<\/span>
    \n "publish_date"<\/span>:<\/span> policy[<\/span>"publish_date"<\/span>]<\/span>
    \n }<\/span>)<\/span>
    \n if<\/span> texts:<\/span>
    \n vector_db.<\/span>add_texts(<\/span>texts=<\/span>texts,<\/span> metadatas=<\/span>metadatas)<\/span>
    \n vector_db.<\/span>persist(<\/span>)<\/span>
    \n return<\/span> {<\/span>"error_log"<\/span>:<\/span> error}<\/span><\/p>\n

    3.6 LangGraph \u6784\u5efa\u5de5\u4f5c\u6d41\u56fe，\u542f\u52a8\u4efb\u52a1<\/h4>\n

    def<\/span> build_graph<\/span>(<\/span>)<\/span>:<\/span>
    \n graph =<\/span> StateGraph(<\/span>AgentState)<\/span>
    \n # \u6ce8\u518c\u8282\u70b9<\/span>
    \n graph.<\/span>add_node(<\/span>"crawler"<\/span>,<\/span> crawler_agent)<\/span>
    \n graph.<\/span>add_node(<\/span>"parser"<\/span>,<\/span> document_parser_agent)<\/span>
    \n graph.<\/span>add_node(<\/span>"extractor"<\/span>,<\/span> policy_extract_agent)<\/span>
    \n graph.<\/span>add_node(<\/span>"knowledge_store"<\/span>,<\/span> knowledge_base_agent)<\/span>
    \n # \u8bbe\u7f6e\u6d41\u8f6c\u987a\u5e8f<\/span>
    \n graph.<\/span>set_entry_point(<\/span>"crawler"<\/span>)<\/span>
    \n graph.<\/span>add_edge(<\/span>"crawler"<\/span>,<\/span> "parser"<\/span>)<\/span>
    \n graph.<\/span>add_edge(<\/span>"parser"<\/span>,<\/span> "extractor"<\/span>)<\/span>
    \n graph.<\/span>add_edge(<\/span>"extractor"<\/span>,<\/span> "knowledge_store"<\/span>)<\/span>
    \n graph.<\/span>add_edge(<\/span>"knowledge_store"<\/span>,<\/span> END)<\/span>
    \n return<\/span> graph.<\/span>compile<\/span>(<\/span>)<\/span><\/p>\n

    if<\/span> __name__ ==<\/span> "__main__"<\/span>:<\/span>
    \n app =<\/span> build_graph(<\/span>)<\/span>
    \n # \u8f93\u5165\u5f85\u6293\u53d6\u7535\u529b\u653f\u7b56\u94fe\u63a5，\u66ff\u6362\u4e3a\u5404\u7701\u7535\u529b\u4ea4\u6613\u4e2d\u5fc3\u516c\u544a\u5730\u5740<\/span>
    \n init_input =<\/span> {<\/span>
    \n "url_list"<\/span>:<\/span> [<\/span>
    \n "https:\/\/example.com\/jiangsu_power_policy.pdf"<\/span>,<\/span>
    \n "https:\/\/example.com\/henan_trade_notice.html"<\/span>
    \n ]<\/span>,<\/span>
    \n "raw_documents"<\/span>:<\/span> [<\/span>]<\/span>,<\/span>
    \n "structured_policy"<\/span>:<\/span> [<\/span>]<\/span>,<\/span>
    \n "error_log"<\/span>:<\/span> [<\/span>]<\/span>
    \n }<\/span>
    \n result =<\/span> app.<\/span>invoke(<\/span>init_input)<\/span>
    \n print<\/span>(<\/span>"====\u4efb\u52a1\u6267\u884c\u5b8c\u6210===="<\/span>)<\/span>
    \n print<\/span>(<\/span>"\u9519\u8bef\u65e5\u5fd7："<\/span>)<\/span>
    \n for<\/span> err in<\/span> result[<\/span>"error_log"<\/span>]<\/span>:<\/span>
    \n print<\/span>(<\/span>err)<\/span>
    \n print<\/span>(<\/span>f"\u6210\u529f\u89e3\u6790\u653f\u7b56\u6570\u91cf：<\/span>{<\/span>len<\/span>(<\/span>result[<\/span>'structured_policy'<\/span>]<\/span>)<\/span>}<\/span><\/span>"<\/span><\/span>)<\/span><\/p>\n

    \u56db\u3001\u4ee3\u7801\u8fd0\u884c\u8bf4\u660e\u4e0e\u5de5\u7a0b\u4f18\u5316\u65b9\u6848<\/h3>\n

    4.1 \u57fa\u7840\u8fd0\u884c\u95ee\u9898\u89e3\u51b3<\/h4>\n
  • Tesseract OCR\u62a5\u9519：\u5fc5\u987b\u5b89\u88c5\u672c\u5730\u7a0b\u5e8f，\u4ee3\u7801\u4e2d\u6dfb\u52a0\u8def\u5f84 pytesseract.pytesseract.tesseract_cmd = r'C:\\\\Program Files\\\\Tesseract-OCR\\\\tesseract.exe'<\/li>\n
  • \u8d85\u957f\u6587\u6863\u62a5\u9519：\u589e\u52a0\u6587\u672c\u6ed1\u52a8\u7a97\u53e3\u5206\u6bb5\u62bd\u53d6，\u907f\u514d\u5927\u6a21\u578b\u4e0a\u4e0b\u6587\u6ea2\u51fa<\/li>\n
  • \u722c\u866b\u5c01\u7981：\u589e\u52a0\u4ee3\u7406\u6c60\u3001\u8bf7\u6c42\u95f4\u9694，\u968f\u673aUA<\/li>\n

    4.2 \u751f\u4ea7\u73af\u5883\u4f18\u5316\u65b9\u5411<\/h4>\n
  • \u8def\u7531\u5206\u652f\u4f18\u5316：\u5f53\u524d\u4e3a\u7ebf\u6027\u6d41\u7a0b，\u53ef\u6539\u9020LangGraph\u6761\u4ef6\u5206\u652f，PDF\u3001\u7f51\u9875\u3001\u56fe\u7247\u5e76\u884c\u89e3\u6790，\u63d0\u5347\u901f\u5ea6<\/li>\n
  • \u53bb\u91cd\u673a\u5236：\u589e\u52a0URL\u54c8\u5e0c\u3001\u6587\u6863\u6587\u672c\u76f8\u4f3c\u5ea6\u6bd4\u5bf9，\u907f\u514d\u91cd\u590d\u5165\u5e93\u76f8\u540c\u653f\u7b56<\/li>\n
  • \u589e\u91cf\u66f4\u65b0：\u5b9a\u65f6\u722c\u866b\u8f6e\u8be2\u7535\u529b\u4ea4\u6613\u7f51\u7ad9，\u53ea\u6293\u53d6\u6700\u65b0\u53d1\u5e03\u653f\u7b56，\u5b9e\u73b0\u6301\u7eed\u8ddf\u8e2a<\/li>\n
  • Function Calling\u589e\u5f3a：\u6269\u5c55Agent\u80fd\u529b，\u65b0\u589e\u653f\u7b56\u5dee\u5f02\u5bf9\u6bd4Agent，\u81ea\u52a8\u5bf9\u6bd4\u65b0\u65e7\u7248\u672c\u89c4\u5219\u53d8\u5316<\/li>\n
  • \u6301\u4e45\u5316\u72b6\u6001：\u7ed3\u5408Redis\u5b58\u50a8LangGraph\u8fd0\u884c\u72b6\u6001，\u652f\u6301\u4e2d\u65ad\u4efb\u52a1\u7eed\u8dd1<\/li>\n

    \u4e94\u3001\u4e1a\u52a1\u843d\u5730\u601d\u8003：\u7535\u529b\u653f\u7b56Agent\u7684\u4ef7\u503c<\/h3>\n

    \u4f20\u7edf\u65b9\u6848\u4f7f\u7528\u56fa\u5b9a\u722c\u866b+\u6b63\u5219\u8868\u8fbe\u5f0f\u63d0\u53d6\u653f\u7b56\u6761\u6b3e，\u7f3a\u70b9\u5341\u5206\u660e\u663e：\u7535\u529b\u653f\u7b56\u6587\u4ef6\u683c\u5f0f\u4e0d\u7edf\u4e00\u3001\u626b\u63cf\u7248PDF\u65e0\u6cd5\u63d0\u53d6\u6587\u672c\u3001\u5404\u7701\u6587\u4ef6\u884c\u6587\u89c4\u8303\u5dee\u5f02\u5de8\u5927，\u6b63\u5219\u5f88\u96be\u9002\u914d\u3002<\/p>\n

    \u57fa\u4e8eLangGraph\u591a\u667a\u80fd\u4f53\u65b9\u6848\u4f18\u52bf：<\/p>\n

  • \u6a21\u5757\u5316\u89e3\u8026：\u722c\u866b\u3001\u89e3\u6790\u3001\u62bd\u53d6\u3001\u77e5\u8bc6\u5e93\u6a21\u5757\u72ec\u7acb，\u5355\u72ec\u8fed\u4ee3\u7ef4\u62a4<\/li>\n
  • \u81ea\u9002\u5e94\u975e\u7ed3\u6784\u5316\u6587\u6863：OCR+PDF\u53cc\u65b9\u6848\u517c\u5bb9\u626b\u63cf\u4ef6\u3001\u7535\u5b50\u7248\u653f\u7b56<\/li>\n
  • \u81ea\u7136\u8bed\u8a00\u7406\u89e3：\u4f9d\u9760\u5927\u6a21\u578b\u7406\u89e3\u653f\u7b56\u8bed\u4e49，\u4e0d\u9700\u8981\u7f16\u5199\u5927\u91cf\u89c4\u5219\u8868\u8fbe\u5f0f<\/li>\n
  • \u53ef\u6269\u5c55：\u540e\u7eed\u53ef\u4ee5\u65b0\u589e\u7535\u4ef7\u6570\u636e\u91c7\u96c6Agent\u3001\u6536\u76ca\u6d4b\u7b97Agent，\u5b9e\u73b0\u591a\u667a\u80fd\u4f53\u534f\u540c\u51b3\u7b56，\u5bf9\u63a5\u7535\u529b\u4ea4\u6613\u4e1a\u52a1\u7cfb\u7edf<\/li>\n

    \u516d\u3001\u73b0\u5b58\u75db\u70b9\u4e0e\u907f\u5751\u6307\u5357<\/h3>\n
  • \u62bd\u53d6\u7a33\u5b9a\u6027\u95ee\u9898：\u5927\u6a21\u578b\u5076\u5c14\u8f93\u51fa\u975e\u6cd5JSON，\u5de5\u7a0b\u4e2d\u589e\u52a0\u91cd\u8bd5\u8282\u70b9\u3001JSON\u6e05\u6d17\u5de5\u5177；<\/li>\n
  • \u5411\u91cf\u5e93\u68c0\u7d22\u7cbe\u5ea6：\u5355\u7eaf\u6bb5\u843d\u5207\u7247\u6548\u679c\u5dee，\u540e\u7eed\u53ef\u5f15\u5165Hierarchical\u5207\u7247\u3001\u7236\u6587\u6863\u68c0\u7d22\u63d0\u5347RAG\u6548\u679c；<\/li>\n
  • \u957fPDF\u6587\u4ef6：\u6570\u767e\u9875\u653f\u7b56\u6587\u4ef6\u4e00\u6b21\u6027\u4f20\u5165LLM\u4f1a\u8d85\u9650，\u9700\u8981\u5b9e\u73b0\u6587\u6863\u5206\u5757\u3001\u5206\u6279\u62bd\u53d6；<\/li>\n
  • \u626b\u63cf\u4ef6\u8bc6\u522b：\u6a21\u7cca\u56fe\u7247OCR\u51c6\u786e\u7387\u4e0b\u964d，\u53ef\u5f15\u5165OpenCV\u56fe\u7247\u9884\u5904\u7406（\u964d\u566a\u3001\u4e8c\u503c\u5316）\u63d0\u5347\u8bc6\u522b\u6548\u679c\u3002<\/li>\n

    \u4e03\u3001\u62d3\u5c55\u5ef6\u4f38<\/h3>\n

    \u672c\u5957\u591a\u667a\u80fd\u4f53\u6846\u67b6\u4e0d\u5c40\u9650\u4e8e\u7535\u529b\u653f\u7b56\u573a\u666f，\u53ef\u4ee5\u5feb\u901f\u8fc1\u79fb\u81f3：\u65b0\u80fd\u6e90\u653f\u7b56\u8ddf\u8e2a\u3001\u50a8\u80fd\u884c\u4e1a\u6587\u4ef6\u89e3\u6790\u3001\u62db\u6295\u6807\u516c\u544a\u6293\u53d6\u3002\u7ed3\u5408LangGraph\u7684\u6761\u4ef6\u5206\u652f\u3001\u5faa\u73af\u80fd\u529b，\u8fd8\u53ef\u4ee5\u5b9e\u73b0\u81ea\u4e3b\u641c\u7d22Agent：\u5f53\u653f\u7b56\u4fe1\u606f\u7f3a\u5931\u65f6，\u667a\u80fd\u4f53\u4e3b\u52a8\u751f\u6210\u5173\u952e\u8bcd\u518d\u6b21\u68c0\u7d22\u7f51\u9875，\u5f62\u6210\u95ed\u73af\u81ea\u4e3b\u8c03\u7814\u3002<\/p>\n

    \n","protected":false},"excerpt":{"rendered":"

    \u6587\u7ae0\u524d\u8a00
    \n\u968f\u7740\u56fd\u5185\u7535\u529b\u5e02\u573a\u5316\u6539\u9769\u6301\u7eed\u63a8\u8fdb，\u5404\u7701\u7535\u529b\u4ea4\u6613\u4e2d\u5fc3\u6301\u7eed\u53d1\u5e03\u4ea4\u6613\u89c4\u5219\u3001\u653f\u7b56\u6587\u4ef6\u3001\u5e02\u573a\u901a\u77e5\u3002\u7535\u529b\u4ece\u4e1a\u8005\u9700\u8981\u6301\u7eed\u8ddf\u8e2a\u6d77\u91cfPDF\u516c\u544a\u3001\u7f51\u9875\u653f\u7b56\u6587\u672c，\u4eba\u5de5\u6574\u7406\u3001\u5bf9\u6bd4\u653f\u7b56\u5dee\u5f02\u3001\u63d0\u53d6\u6838\u5fc3\u6761\u6b3e\u6210\u672c\u6781\u9ad8\u3002\u4f20\u7edf\u5355\u4e00\u5927\u6a21\u578b\u5e94\u7528\u65e0\u6cd5\u5b8c\u6210\u7f51\u9875\u91c7\u96c6\u2192\u6587\u6863\u89e3\u6790\u2192\u6587\u672c\u62bd\u53d6\u2192\u77e5\u8bc6\u5165\u5e93\u2192\u667a\u80fd\u5206\u6790\u5b8c\u6574\u6d41\u6c34\u7ebf\u3002
    \n\u672c\u6587\u57fa\u4e8eLangGraph\u6784\u5efa\u591a\u667a\u80fd\u4f53\u534f\u540c\u7cfb\u7edf，\u62c6\u5206\u722c\u866b\u667a\u80fd\u4f53\u3001\u6587\u6863\u89e3\u6790\u667a\u80fd\u4f53\u3001\u89c4\u5219\u62bd\u53d6\u667a\u80fd\u4f53\u3001\u77e5\u8bc6\u5e93\u66f4\u65b0\u667a\u80fd\u4f53\u3002\u6574\u5957\u5de5\u4f5c\u6d41\u81ea\u52a8\u5b8c\u6210\u7f51\u9875\u6293\u53d6\u3001PDF\u89e3\u6790\u3001\u56fe<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[756,2150,677],"topic":[],"class_list":["post-89708","post","type-post","status-publish","format-standard","hentry","category-server","tag-ocr","tag-pdf","tag-677"],"yoast_head":"\nLangGraph \u591a\u667a\u80fd\u4f53\u5b9e\u6218\uff1a\u642d\u5efa\u7535\u529b\u653f\u7b56\u8ddf\u8e2a Agent\uff0c\u5b9e\u73b0\u7f51\u9875\u722c\u866b\u3001OCR \u4e0e PDF \u6587\u6863\u81ea\u52a8\u5316\u89e3\u6790 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/89708.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"LangGraph \u591a\u667a\u80fd\u4f53\u5b9e\u6218\uff1a\u642d\u5efa\u7535\u529b\u653f\u7b56\u8ddf\u8e2a Agent\uff0c\u5b9e\u73b0\u7f51\u9875\u722c\u866b\u3001OCR \u4e0e PDF \u6587\u6863\u81ea\u52a8\u5316\u89e3\u6790 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u524d\u8a00 \u968f\u7740\u56fd\u5185\u7535\u529b\u5e02\u573a\u5316\u6539\u9769\u6301\u7eed\u63a8\u8fdb，\u5404\u7701\u7535\u529b\u4ea4\u6613\u4e2d\u5fc3\u6301\u7eed\u53d1\u5e03\u4ea4\u6613\u89c4\u5219\u3001\u653f\u7b56\u6587\u4ef6\u3001\u5e02\u573a\u901a\u77e5\u3002\u7535\u529b\u4ece\u4e1a\u8005\u9700\u8981\u6301\u7eed\u8ddf\u8e2a\u6d77\u91cfPDF\u516c\u544a\u3001\u7f51\u9875\u653f\u7b56\u6587\u672c，\u4eba\u5de5\u6574\u7406\u3001\u5bf9\u6bd4\u653f\u7b56\u5dee\u5f02\u3001\u63d0\u53d6\u6838\u5fc3\u6761\u6b3e\u6210\u672c\u6781\u9ad8\u3002\u4f20\u7edf\u5355\u4e00\u5927\u6a21\u578b\u5e94\u7528\u65e0\u6cd5\u5b8c\u6210\u7f51\u9875\u91c7\u96c6\u2192\u6587\u6863\u89e3\u6790\u2192\u6587\u672c\u62bd\u53d6\u2192\u77e5\u8bc6\u5165\u5e93\u2192\u667a\u80fd\u5206\u6790\u5b8c\u6574\u6d41\u6c34\u7ebf\u3002 \u672c\u6587\u57fa\u4e8eLangGraph\u6784\u5efa\u591a\u667a\u80fd\u4f53\u534f\u540c\u7cfb\u7edf，\u62c6\u5206\u722c\u866b\u667a\u80fd\u4f53\u3001\u6587\u6863\u89e3\u6790\u667a\u80fd\u4f53\u3001\u89c4\u5219\u62bd\u53d6\u667a\u80fd\u4f53\u3001\u77e5\u8bc6\u5e93\u66f4\u65b0\u667a\u80fd\u4f53\u3002\u6574\u5957\u5de5\u4f5c\u6d41\u81ea\u52a8\u5b8c\u6210\u7f51\u9875\u6293\u53d6\u3001PDF\u89e3\u6790\u3001\u56fe\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/89708.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-03T06:56:32+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/89708.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/89708.html\",\"name\":\"LangGraph \u591a\u667a\u80fd\u4f53\u5b9e\u6218\uff1a\u642d\u5efa\u7535\u529b\u653f\u7b56\u8ddf\u8e2a Agent\uff0c\u5b9e\u73b0\u7f51\u9875\u722c\u866b\u3001OCR \u4e0e PDF \u6587\u6863\u81ea\u52a8\u5316\u89e3\u6790 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-08-03T06:56:32+00:00\",\"dateModified\":\"2026-08-03T06:56:32+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/89708.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/89708.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/89708.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"LangGraph \u591a\u667a\u80fd\u4f53\u5b9e\u6218\uff1a\u642d\u5efa\u7535\u529b\u653f\u7b56\u8ddf\u8e2a Agent\uff0c\u5b9e\u73b0\u7f51\u9875\u722c\u866b\u3001OCR \u4e0e PDF \u6587\u6863\u81ea\u52a8\u5316\u89e3\u6790\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"LangGraph \u591a\u667a\u80fd\u4f53\u5b9e\u6218\uff1a\u642d\u5efa\u7535\u529b\u653f\u7b56\u8ddf\u8e2a Agent\uff0c\u5b9e\u73b0\u7f51\u9875\u722c\u866b\u3001OCR \u4e0e PDF \u6587\u6863\u81ea\u52a8\u5316\u89e3\u6790 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/89708.html","og_locale":"zh_CN","og_type":"article","og_title":"LangGraph \u591a\u667a\u80fd\u4f53\u5b9e\u6218\uff1a\u642d\u5efa\u7535\u529b\u653f\u7b56\u8ddf\u8e2a Agent\uff0c\u5b9e\u73b0\u7f51\u9875\u722c\u866b\u3001OCR \u4e0e PDF \u6587\u6863\u81ea\u52a8\u5316\u89e3\u6790 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u6587\u7ae0\u524d\u8a00 \u968f\u7740\u56fd\u5185\u7535\u529b\u5e02\u573a\u5316\u6539\u9769\u6301\u7eed\u63a8\u8fdb，\u5404\u7701\u7535\u529b\u4ea4\u6613\u4e2d\u5fc3\u6301\u7eed\u53d1\u5e03\u4ea4\u6613\u89c4\u5219\u3001\u653f\u7b56\u6587\u4ef6\u3001\u5e02\u573a\u901a\u77e5\u3002\u7535\u529b\u4ece\u4e1a\u8005\u9700\u8981\u6301\u7eed\u8ddf\u8e2a\u6d77\u91cfPDF\u516c\u544a\u3001\u7f51\u9875\u653f\u7b56\u6587\u672c，\u4eba\u5de5\u6574\u7406\u3001\u5bf9\u6bd4\u653f\u7b56\u5dee\u5f02\u3001\u63d0\u53d6\u6838\u5fc3\u6761\u6b3e\u6210\u672c\u6781\u9ad8\u3002\u4f20\u7edf\u5355\u4e00\u5927\u6a21\u578b\u5e94\u7528\u65e0\u6cd5\u5b8c\u6210\u7f51\u9875\u91c7\u96c6\u2192\u6587\u6863\u89e3\u6790\u2192\u6587\u672c\u62bd\u53d6\u2192\u77e5\u8bc6\u5165\u5e93\u2192\u667a\u80fd\u5206\u6790\u5b8c\u6574\u6d41\u6c34\u7ebf\u3002 \u672c\u6587\u57fa\u4e8eLangGraph\u6784\u5efa\u591a\u667a\u80fd\u4f53\u534f\u540c\u7cfb\u7edf，\u62c6\u5206\u722c\u866b\u667a\u80fd\u4f53\u3001\u6587\u6863\u89e3\u6790\u667a\u80fd\u4f53\u3001\u89c4\u5219\u62bd\u53d6\u667a\u80fd\u4f53\u3001\u77e5\u8bc6\u5e93\u66f4\u65b0\u667a\u80fd\u4f53\u3002\u6574\u5957\u5de5\u4f5c\u6d41\u81ea\u52a8\u5b8c\u6210\u7f51\u9875\u6293\u53d6\u3001PDF\u89e3\u6790\u3001\u56fe","og_url":"https:\/\/www.wsisp.com\/helps\/89708.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-08-03T06:56:32+00:00","author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"5 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/89708.html","url":"https:\/\/www.wsisp.com\/helps\/89708.html","name":"LangGraph \u591a\u667a\u80fd\u4f53\u5b9e\u6218\uff1a\u642d\u5efa\u7535\u529b\u653f\u7b56\u8ddf\u8e2a Agent\uff0c\u5b9e\u73b0\u7f51\u9875\u722c\u866b\u3001OCR \u4e0e PDF \u6587\u6863\u81ea\u52a8\u5316\u89e3\u6790 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-08-03T06:56:32+00:00","dateModified":"2026-08-03T06:56:32+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/89708.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/89708.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/89708.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"LangGraph \u591a\u667a\u80fd\u4f53\u5b9e\u6218\uff1a\u642d\u5efa\u7535\u529b\u653f\u7b56\u8ddf\u8e2a Agent\uff0c\u5b9e\u73b0\u7f51\u9875\u722c\u866b\u3001OCR \u4e0e PDF \u6587\u6863\u81ea\u52a8\u5316\u89e3\u6790"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/89708","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=89708"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/89708\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=89708"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=89708"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=89708"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=89708"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}