{"id":100988,"date":"2026-09-05T21:41:47","date_gmt":"2026-09-05T13:41:47","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/100988.html"},"modified":"2026-09-05T21:41:47","modified_gmt":"2026-09-05T13:41:47","slug":"langchain-ai%e5%ba%94%e7%94%a8%e5%bc%80%e5%8f%91%e6%a1%86%e6%9e%b6%e6%a0%b8%e5%bf%83%e7%bb%84%e4%bb%b6%e7%9a%84%e4%bd%bf%e7%94%a8-%e6%b6%88%e6%81%af%e7%bb%84%e4%bb%b6%e7%9a%84%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/100988.html","title":{"rendered":"LangChain AI\u5e94\u7528\u5f00\u53d1\u6846\u67b6\u6838\u5fc3\u7ec4\u4ef6\u7684\u4f7f\u7528 - \u6d88\u606f\u7ec4\u4ef6\u7684\u4f7f\u7528 : \u6d88\u606f\uff0c\u5386\u53f2\u6d88\u606f\u7684\u7f13\u5b58\uff0c\u5386\u53f2\u6d88\u606f\u7684\u7ba1\u7406(\u88c1\u526a\u8fc7\u6ee4\u5408\u5e76)"},"content":{"rendered":"<p id=\"main-toc\">\u76ee\u5f55<\/p>\n<p id=\"%E4%B8%80%E3%80%81%E4%BA%86%E8%A7%A3%E6%A0%B8%E5%BF%83%E7%BB%84%E4%BB%B6%EF%BC%88Components%EF%BC%89-toc\" style=\"margin-left:0px\">\u4e00\u3001\u4e86\u89e3\u6838\u5fc3\u7ec4\u4ef6&#xff08;Components&#xff09;<\/p>\n<p id=\"%E4%BA%8C%E3%80%81%E6%B6%88%E6%81%AF%EF%BC%88Messages%EF%BC%89-toc\" style=\"margin-left:0px\">\u4e8c\u3001\u6d88\u606f&#xff08;Messages&#xff09;<\/p>\n<p id=\"LLM%20%E5%A4%A7%E6%A8%A1%E5%9E%8B%E7%9A%84%E6%B6%88%E6%81%AF%E7%BB%93%E6%9E%84-toc\" style=\"margin-left:40px\">LLM \u5927\u6a21\u578b\u7684\u6d88\u606f\u7ed3\u6784<\/p>\n<p id=\"LangChain%20%E6%B6%88%E6%81%AF-toc\" style=\"margin-left:40px\">LangChain \u6d88\u606f<\/p>\n<p id=\"BaseMessage%20%E6%8A%BD%E8%B1%A1%E6%B6%88%E6%81%AF%E7%B1%BB-toc\" style=\"margin-left:80px\">BaseMessage \u62bd\u8c61\u6d88\u606f\u7c7b<\/p>\n<p id=\"%E5%AF%B9%E8%AF%9D%E6%A8%A1%E5%BC%8F-toc\" style=\"margin-left:80px\">\u5bf9\u8bdd\u6a21\u5f0f<\/p>\n<p id=\"%E4%B8%89%E3%80%81%E7%BC%93%E5%AD%98%E5%8E%86%E5%8F%B2%E6%B6%88%E6%81%AF-toc\" style=\"margin-left:0px\">\u4e09\u3001\u7f13\u5b58\u5386\u53f2\u6d88\u606f<\/p>\n<p id=\"%E5%A4%9A%E8%BD%AE%E5%AF%B9%E8%AF%9D-toc\" style=\"margin-left:40px\">\u591a\u8f6e\u5bf9\u8bdd<\/p>\n<p id=\"%E5%86%85%E5%AD%98%E7%BC%93%E5%AD%98-toc\" style=\"margin-left:40px\">\u5185\u5b58\u7f13\u5b58<\/p>\n<p id=\"%E8%AF%B4%E6%98%8E-toc\" style=\"margin-left:80px\">\u8bf4\u660e<\/p>\n<p id=\"%E5%9B%9B%E3%80%81%E7%AE%A1%E7%90%86%E5%8E%86%E5%8F%B2%E6%B6%88%E6%81%AF-toc\" style=\"margin-left:0px\">\u56db\u3001\u7ba1\u7406\u5386\u53f2\u6d88\u606f<\/p>\n<p id=\"%E5%89%8D%E7%BD%AE%E6%A6%82%E5%BF%B5-toc\" style=\"margin-left:40px\">\u524d\u7f6e\u6982\u5ff5<\/p>\n<p id=\"%E4%B8%8A%E4%B8%8B%E6%96%87%E7%AA%97%E5%8F%A3-toc\" style=\"margin-left:80px\">\u4e0a\u4e0b\u6587\u7a97\u53e3<\/p>\n<p id=\"Token-toc\" style=\"margin-left:80px\">Token<\/p>\n<p id=\"%E6%B6%88%E6%81%AF%E8%A3%81%E5%89%AA-toc\" style=\"margin-left:40px\">\u6d88\u606f\u88c1\u526a<\/p>\n<p id=\"%E5%9F%BA%E4%BA%8E%E8%BE%93%E5%85%A5%20Token%20%E6%95%B0%E7%9A%84%E4%BF%AE%E5%89%AA-toc\" style=\"margin-left:80px\">\u57fa\u4e8e\u8f93\u5165 Token \u6570\u7684\u4fee\u526a<\/p>\n<p id=\"%E5%9F%BA%E4%BA%8E%E6%B6%88%E6%81%AF%E6%95%B0%E7%9A%84%E4%BF%AE%E5%89%AA-toc\" style=\"margin-left:80px\">\u57fa\u4e8e\u6d88\u606f\u6570\u7684\u4fee\u526a<\/p>\n<p id=\"%E6%B6%88%E6%81%AF%E8%BF%87%E6%BB%A4-toc\" style=\"margin-left:40px\">\u6d88\u606f\u8fc7\u6ee4<\/p>\n<p id=\"%E6%8C%89%E7%B1%BB%E5%9E%8B%E8%BF%9B%E8%A1%8C%E7%AD%9B%E9%80%89-toc\" style=\"margin-left:80px\">\u6309\u7c7b\u578b\u8fdb\u884c\u7b5b\u9009<\/p>\n<p id=\"%E6%8C%89%E7%B1%BB%E5%9E%8B%20%2B%20ID%20%E8%BF%9B%E8%A1%8C%E7%AD%9B%E9%80%89%EF%BC%9A-toc\" style=\"margin-left:80px\">\u6309\u7c7b\u578b &#043; ID \u8fdb\u884c\u7b5b\u9009&#xff1a;<\/p>\n<p id=\"%E6%B6%88%E6%81%AF%E5%90%88%E5%B9%B6-toc\" style=\"margin-left:40px\">\u6d88\u606f\u5408\u5e76<\/p>\n<hr \/>\n<h2 id=\"%E4%B8%80%E3%80%81%E4%BA%86%E8%A7%A3%E6%A0%B8%E5%BF%83%E7%BB%84%E4%BB%B6%EF%BC%88Components%EF%BC%89\" style=\"background-color:transparent\">\u4e00\u3001\u4e86\u89e3\u6838\u5fc3\u7ec4\u4ef6&#xff08;Components&#xff09;<\/h2>\n<p>\u4ece\u672c\u7bc7\u6587\u7ae0\u5f00\u59cb&#xff0c;\u6211\u4eec\u5c06\u5b66\u4e60\u5927\u91cf\u7684\u6982\u5ff5\u3001\u672f\u8bed&#xff0c;\u53ca\u5176\u5177\u4f53\u7528\u6cd5\u548c\u5bf9\u5e94\u7684\u63a5\u53e3\u65b9\u6cd5\u3002<\/p>\n<p>\u4f46\u4e0d\u7528\u62c5\u5fc3&#xff0c;\u5b83\u4eec\u672c\u8d28\u4e0a\u90fd\u662f\u56f4\u7ed5\u5927\u6a21\u578b\u8c03\u7528\u884d\u751f\u51fa\u6765\u7684\u4e00\u7cfb\u5217\u529f\u80fd\u6269\u5c55&#xff0c;\u56e0\u4e3a\u5927\u6a21\u578b\u4e5f\u4e0d\u662f\u968f\u968f\u4fbf\u4fbf\u5c31\u80fd\u88ab\u5f88\u597d\u7684\u8c03\u7528\u8d77\u6765\u3002\u56e0\u6b64&#xff0c;\u4e3a\u4e86\u8ba9\u6574\u4e2a\u4ea4\u4e92\u6d41\u7a0b\u66f4\u89c4\u8303\u3001\u66f4\u9ad8\u6548&#xff0c;LangChain \u5b9a\u4e49\u4e86\u4e00\u7cfb\u5217\u7684\u7ec4\u4ef6\u4f7f\u6211\u4eec\u4e0e\u5927\u6a21\u578b\u7684\u4ea4\u4e92\u66f4\u89c4\u8303\u3002<\/p>\n<p>\u56e0\u6b64\u5728\u5b66\u4e60\u8fc7\u7a0b\u4e2d&#xff0c;\u6709\u51e0\u70b9\u8981\u63d0\u524d\u5f3a\u8c03&#xff1a;<\/p>\n<li>\u7406\u89e3\u6bcf\u4e2a\u7ec4\u4ef6\u7684\u4f5c\u7528\u548c\u9002\u7528\u573a\u666f\u662f\u6700\u91cd\u8981\u7684&#xff0c;\u4e0d\u9700\u8981\u6b7b\u8bb0\u786c\u80cc\u63a5\u53e3\u548c\u53c2\u6570&#xff1b;<\/li>\n<li>\u5e76\u4e14\u6211\u4eec\u9700\u8981\u5b66\u4f1a\u5982\u4f55\u67e5\u9605\u5b98\u65b9\u6587\u6863&#xff0c;\u638c\u63e1\u81ea\u4e3b\u67e5\u8be2\u7684\u65b9\u6cd5\u624d\u662f\u5173\u952e&#xff1b;<\/li>\n<h2 id=\"%E4%BA%8C%E3%80%81%E6%B6%88%E6%81%AF%EF%BC%88Messages%EF%BC%89\">\u4e8c\u3001\u6d88\u606f&#xff08;Messages&#xff09;<\/h2>\n<p>\u6d88\u606f\u662f\u804a\u5929\u6a21\u578b\u4e2d\u7684\u901a\u4fe1\u5355\u4f4d&#xff0c;\u7528\u4e8e<span style=\"color:#fe2c24\">\u8868\u793a\u804a\u5929\u6a21\u578b\u7684\u8f93\u5165\u548c\u8f93\u51fa<\/span>&#xff0c;\u4ee5\u53ca\u53ef\u80fd\u4e0e\u5bf9\u8bdd\u5173\u8054\u7684\u4efb\u4f55\u5176\u4ed6\u4e0a\u4e0b\u6587\u6216\u5143\u6570\u636e\u3002<\/p>\n<h3 id=\"LLM%20%E5%A4%A7%E6%A8%A1%E5%9E%8B%E7%9A%84%E6%B6%88%E6%81%AF%E7%BB%93%E6%9E%84\">LLM \u5927\u6a21\u578b\u7684\u6d88\u606f\u7ed3\u6784<\/h3>\n<p><span style=\"color:#fe2c24\">\u6bcf\u6761\u6d88\u606f\u90fd\u6709\u4e00\u4e2a\u89d2\u8272\u548c\u5185\u5bb9&#xff0c;\u4ee5\u53ca\u56e0 LLM \u7684\u4e0d\u540c\u800c\u4e0d\u540c\u7684\u9644\u52a0\u5143\u6570\u636e\u3002<\/span><\/p>\n<p>1. \u6d88\u606f\u89d2\u8272 (Role)&#xff1a;\u7528\u6765\u533a\u5206\u5bf9\u8bdd\u4e2d\u4e0d\u540c\u7c7b\u578b\u7684\u6d88\u606f&#xff0c;\u5e76\u5e2e\u52a9\u804a\u5929\u6a21\u578b\u4e86\u89e3\u5982\u4f55\u54cd\u5e94\u7ed9\u5b9a\u7684\u6d88\u606f\u5e8f\u5217\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"324\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134142-6a9c1c16dfbca.png\" width=\"1265\" \/><\/p>\n<p>2. \u6d88\u606f\u5185\u5bb9 (Content)&#xff1a;<span style=\"color:#fe2c24\">\u8868\u793a\u591a\u6a21\u6001\u6570\u636e (\u4f8b\u5982&#xff0c;\u56fe\u50cf\u3001\u97f3\u9891\u3001\u89c6\u9891) \u7684\u6d88\u606f\u6587\u672c\u6216\u5b57\u5178\u5217\u8868\u7684\u5185\u5bb9\u3002<\/span>\u5185\u5bb9\u7684\u5177\u4f53\u683c\u5f0f\u53ef\u80fd\u56e0\u5e95\u5c42\u4e0d\u540c\u7684 LLM \u800c\u5f02\u3002<span style=\"color:#fe2c24\">\u76ee\u524d\u5927\u591a\u6570\u6a21\u578b\u90fd\u652f\u6301\u6587\u672c\u4f5c\u4e3a\u4e3b\u8981\u5185\u5bb9\u7c7b\u578b<\/span>&#xff0c;\u5bf9\u591a\u6a21\u6001\u6570\u636e\u7684\u652f\u6301\u4ecd\u7136\u6709\u9650\u3002<\/p>\n<p>3. \u6d88\u606f\u5176\u4ed6\u5143\u6570\u636e (Additional metadata)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"181\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134143-6a9c1c177b2ba.png\" width=\"484\" \/><\/p>\n<p>\u4e0b\u9762\u5c55\u793a\u4e00\u4e2a OpenAI \u7684\u683c\u5f0f\u6d88\u606f\u5217\u8868&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"464\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134143-6a9c1c17973b4.png\" width=\"1018\" \/><\/p>\n<p>\u4ee3\u7801\u8bb2\u89e3&#xff1a; \u8fd9\u662f OpenAI API \u539f\u751f\u7684\u5bf9\u8bdd\u6d88\u606f\u683c\u5f0f&#xff0c;\u662f\u4e00\u4e2a\u5217\u8868&#xff0c;\u5217\u8868\u91cc\u9762\u6bcf\u4e00\u4e2a\u5b57\u5178\u4ee3\u8868\u4e00\u6761\u5bf9\u8bdd\u6d88\u606f\u3002<\/p>\n<li>\u7b2c\u4e00\u6761\u5b57\u5178&#xff1a;<span style=\"color:#ff9900\">role:user \u4ee3\u8868\u8fd9\u6761\u6d88\u606f\u662f\u7528\u6237\u53d1\u51fa\u6765\u7684<\/span>&#xff0c;\u5185\u5bb9\u662f\u7528\u6237\u7684\u63d0\u95ee&#xff1a;Hello, how are you?\u3002<\/li>\n<li>\u7b2c\u4e8c\u6761\u5b57\u5178&#xff1a;<span style=\"color:#ff9900\">role:assistant \u4ee3\u8868\u8fd9\u6761\u662f\u5927\u6a21\u578b\u8fd4\u56de\u7684\u56de\u7b54&#xff0c;\u662f\u6a21\u578b\u5bf9\u4e0a\u4e00\u53e5\u8bdd\u7ed9\u51fa\u7684\u56de\u590d\u5185\u5bb9\u3002<\/span><\/li>\n<li>\u7b2c\u4e09\u6761\u5b57\u5178&#xff1a;<span style=\"color:#ff9900\">\u53c8\u4e00\u6761 user \u89d2\u8272\u6d88\u606f&#xff0c;\u4ee3\u8868\u7528\u6237\u63a5\u7740\u7ee7\u7eed\u63d0\u95ee<\/span>&#xff0c;\u8ba9\u6a21\u578b\u8bb2\u4e2a\u7b11\u8bdd\u3002<\/li>\n<p>\u6574\u4f53\u903b\u8f91&#xff1a;\u628a\u4e00\u8f6e\u4e00\u8f6e\u5bf9\u8bdd&#xff0c;\u6309<span style=\"color:#fe2c24\">\u7528\u6237\u63d0\u95ee\u2192\u6a21\u578b\u56de\u7b54\u2192\u7528\u6237\u518d\u63d0\u95ee<\/span>\u987a\u5e8f\u653e\u5230\u5217\u8868\u91cc&#xff0c;\u5b8c\u6574\u4fdd\u5b58\u4e0a\u4e0b\u6587\u4f20\u7ed9\u5927\u6a21\u578b&#xff0c;\u5927\u6a21\u578b\u5c31\u77e5\u9053\u5b8c\u6574\u804a\u5929\u5386\u53f2&#xff0c;\u4e0d\u4f1a\u4e22\u5931\u524d\u9762\u5bf9\u8bdd\u4fe1\u606f\u3002<\/p>\n<p>LangChain \u63a5\u53d7\u4e0b\u9762\u7684\u683c\u5f0f\u4f5c\u4e3a\u804a\u5929\u6a21\u578b\u7684\u8f93\u5165\u5982\u4e0b&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"456\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134143-6a9c1c17b9ca4.png\" width=\"909\" \/><\/p>\n<p>\u4ee3\u7801\u8bb2\u89e3&#xff1a;<\/p>\n<li>chat_model \u4ee3\u8868\u6211\u4eec\u5b9e\u4f8b\u5316\u597d\u7684\u804a\u5929\u5927\u6a21\u578b\u5bf9\u8c61&#xff0c;\u6bd4\u5982 ChatOpenAI\u3002<\/li>\n<li><span style=\"color:#fe2c24\">.invoke() \u5c31\u662f LangChain \u91cc\u9762\u6807\u51c6\u8c03\u7528\u65b9\u6cd5&#xff0c;\u4f5c\u7528\u5c31\u662f\u628a\u6d88\u606f\u4f20\u7ed9\u5927\u6a21\u578b&#xff0c;\u62ff\u5230\u8fd4\u56de\u7ed3\u679c\u3002<\/span><\/li>\n<li>invoke() \u62ec\u53f7\u91cc\u9762\u4f20\u5165\u7684\u5c31\u662f\u4e0a\u9762 OpenAI \u683c\u5f0f\u7684\u6d88\u606f\u5217\u8868\u3002<\/li>\n<li>\u5217\u8868\u5185\u90e8\u6d88\u606f\u987a\u5e8f\u548c\u4e0a\u9762\u5b8c\u5168\u4e00\u6837&#xff0c;\u4fdd\u5b58\u5b8c\u6574\u5bf9\u8bdd\u4e0a\u4e0b\u6587\u3002<\/li>\n<p>\u7b80\u5355\u8bf4&#xff1a;LangChain \u804a\u5929\u6a21\u578b\u53ef\u4ee5\u76f4\u63a5\u517c\u5bb9 OpenAI \u539f\u751f\u5b57\u5178\u6d88\u606f\u683c\u5f0f&#xff0c;\u628a\u5b8c\u6574\u5bf9\u8bdd\u5386\u53f2\u5217\u8868\u4e22\u8fdb invoke()&#xff0c;\u8fd9\u6837\u5c31\u53ef\u4ee5\u8c03\u7528\u5927\u6a21\u578b\u7ee7\u7eed\u5bf9\u8bdd\u3002<\/p>\n<p>\u540e\u9762\u6211\u4eec\u8fd8\u4f1a\u89c1\u5230 LangChain \u5c01\u88c5\u597d\u7684 HumanMessage\u3001AIMessage \u7c7b\u5bf9\u8c61&#xff0c;\u8fd9\u662f LangChain \u81ea\u5df1\u7684\u6d88\u606f\u5bf9\u8c61&#xff0c;\u548c\u8fd9\u79cd\u539f\u59cb\u5b57\u5178\u53ef\u4ee5\u4e92\u76f8\u8f6c\u6362\u3002<\/p>\n<hr \/>\n<h3 id=\"LangChain%20%E6%B6%88%E6%81%AF\">LangChain \u6d88\u606f<\/h3>\n<p><span style=\"color:#fe2c24\">LangChain \u63d0\u4f9b\u4e86\u4e00\u79cd\u7edf\u4e00\u7684\u6d88\u606f\u683c\u5f0f&#xff0c;\u53ef\u4ee5\u8de8\u804a\u5929\u6a21\u578b\u4f7f\u7528&#xff0c;\u5141\u8bb8\u7528\u6237\u4f7f\u7528\u4e0d\u540c\u7684\u804a\u5929\u6a21\u578b&#xff0c;\u800c\u65e0\u9700\u62c5\u5fc3\u6bcf\u4e2a\u6a21\u578b\u63d0\u4f9b\u5546\u4f7f\u7528\u7684\u6d88\u606f\u683c\u5f0f\u7684\u5177\u4f53\u7ec6\u8282\u3002<\/span>\u4f8b\u5982&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"366\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134143-6a9c1c17db98a.png\" width=\"1083\" \/><\/p>\n<p>\u4ee3\u7801\u8bb2\u89e3&#xff1a;<\/p>\n<li><span style=\"color:#ff9900\">init_chat_model() \u662f LangChain \u63d0\u4f9b\u7684\u7edf\u4e00\u521d\u59cb\u5316\u6a21\u578b\u7684\u51fd\u6570<\/span>\u3002<\/li>\n<li>\u7b2c\u4e00\u4e2a\u53c2\u6570\u586b\u5199\u6a21\u578b\u540d\u79f0&#xff0c;\u7b2c\u4e8c\u4e2a\u53c2\u6570 model_provider \u7528\u6765\u6307\u5b9a\u6a21\u578b\u6240\u5c5e\u5382\u5546\u3002<\/li>\n<li>\u793a\u4f8b\u5206\u522b\u521d\u59cb\u5316\u4e86\u56db\u5bb6\u4e0d\u540c\u5382\u5546\u7684\u5927\u6a21\u578b&#xff1a;OpenAI\u3001Anthropic\u3001DeepSeek\u3001\u8c37\u6b4c Gemini\u3002<\/li>\n<li><span style=\"color:#fe2c24\">\u867d\u7136\u5e95\u5c42\u5404\u5bb6\u5927\u6a21\u578b\u539f\u751f API \u6d88\u606f\u683c\u5f0f\u4e0d\u4e00\u6837&#xff0c;\u4f46\u901a\u8fc7\u8fd9\u4e2a\u51fd\u6570\u521d\u59cb\u5316\u5b8c\u6210\u4e4b\u540e\u5168\u90e8\u5c31\u4f1a\u7edf\u4e00\u4f7f\u7528 LangChain \u81ea\u5df1\u7684\u6d88\u606f\u5bf9\u8c61\u683c\u5f0f\u505a\u8f93\u5165\u8f93\u51fa\u3002<\/span><\/li>\n<li>\u6700\u540e\u4e00\u884c\u662f\u901a\u7528\u5199\u6cd5&#xff0c;\u53ef\u4ee5\u66ff\u6362\u6210\u5176\u4ed6\u4efb\u610f\u652f\u6301\u7684\u6a21\u578b\u4e0e\u5382\u5546\u3002<\/li>\n<li>\u597d\u5904&#xff1a;\u5207\u6362\u5927\u6a21\u578b\u7684\u65f6\u5019&#xff0c;\u4e0a\u5c42\u5199\u7684\u5bf9\u8bdd\u6d88\u606f\u4ee3\u7801\u4e0d\u7528\u5927\u89c4\u6a21\u6539\u52a8&#xff0c;\u964d\u4f4e\u5207\u6362\u6a21\u578b\u7684\u6210\u672c\u3002<\/li>\n<p>\u8fd9\u4e9b\u6a21\u578b\u63d0\u4f9b\u5546\u4e0d\u540c&#xff0c;\u4f46\u5bf9\u4e8e\u5176\u8f93\u5165\u548c\u8f93\u51fa&#xff0c;\u7edf\u4e00\u4f7f\u7528 LangChain \u7684\u6d88\u606f\u683c\u5f0f\u3002LangChain \u6d88\u606f\u683c\u5f0f\u4e3b\u8981\u5206\u4e3a\u4e94\u79cd&#xff0c;\u5206\u522b\u662f&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"586\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134144-6a9c1c18136d8.png\" width=\"1316\" \/><\/p>\n<p>\u8fd9\u51e0\u4e2a\u6d88\u606f\u7c7b\u578b&#xff0c;\u6211\u4eec\u5df2\u7ecf\u5168\u90e8\u89c1\u8fc7&#xff01;\u5b83\u4eec\u90fd\u662f LangChain BaseMessage \u7684\u5b50\u7c7b&#xff0c;\u5168\u90e8\u662f\u4f5c\u4e3a LangChain \u804a\u5929\u6a21\u578b\u7684\u8f93\u5165\u548c\u8f93\u51fa&#xff01;&#xff01;<\/p>\n<hr \/>\n<h4 id=\"BaseMessage%20%E6%8A%BD%E8%B1%A1%E6%B6%88%E6%81%AF%E7%B1%BB\">BaseMessage \u62bd\u8c61\u6d88\u606f\u7c7b<\/h4>\n<p>class langchain_core.messages.base.BaseMessage \u662f\u4f5c\u4e3a LangChain \u804a\u5929\u6a21\u578b\u7684\u8f93\u5165\u548c\u8f93\u51fa\u3002<\/p>\n<p>\u53c2\u6570\u5982\u4e0b&#xff1a;<\/p>\n<ul>\n<li><span style=\"color:#fe2c24\">content&#xff1a;\u6d88\u606f\u7684\u5b57\u7b26\u4e32\u5185\u5bb9\u3002<\/span><\/li>\n<li><span style=\"color:#fe2c24\">additional_kwargs&#xff1a;\u4e0e\u6d88\u606f\u5173\u8054\u7684\u5176\u4ed6\u6709\u6548\u8d1f\u8f7d\u6570\u636e\u3002<\/span>\u5bf9\u4e8e\u6765\u81ea AI \u7684\u6d88\u606f&#xff0c;\u53ef\u80fd\u5305\u62ec\u6a21\u578b\u63d0\u4f9b\u7a0b\u5e8f\u7f16\u7801\u7684\u5de5\u5177\u8c03\u7528\u3002<\/li>\n<li><span style=\"color:#fe2c24\">response_metadata&#xff1a;\u54cd\u5e94\u5143\u6570\u636e\u3002<\/span>\u4f8b\u5982&#xff1a;\u54cd\u5e94\u6807\u5934\u3001logprobs\u3001\u4ee4\u724c\u8ba1\u6570\u3001\u6a21\u578b\u540d\u79f0\u3002<\/li>\n<li><span style=\"color:#fe2c24\">type&#xff1a;\u6d88\u606f\u7684\u7c7b\u578b\u3002<\/span>\u5fc5\u987b\u662f\u6d88\u606f\u7c7b\u578b\u552f\u4e00\u7684\u5b57\u7b26\u4e32\u3002\u6b64\u5b57\u6bb5\u7684\u76ee\u7684\u662f\u5728\u5bf9\u6d88\u606f\u8fdb\u884c\u53cd\u5e8f\u5217\u5316\u65f6\u65b9\u4fbf\u5730\u8bc6\u522b\u6d88\u606f\u7c7b\u578b\u3002<\/li>\n<li>name&#xff1a;\u6d88\u606f\u540d\u79f0&#xff0c;\u4e3a\u6d88\u606f\u63d0\u4f9b\u4e00\u4e2a\u4eba\u7c7b\u53ef\u8bfb\u7684\u540d\u79f0\u3002\u8be5\u5b57\u6bb5\u7684\u4f7f\u7528\u662f\u53ef\u9009\u7684&#xff0c;\u662f\u5426\u4f7f\u7528\u5b83\u53d6\u51b3\u4e8e\u6a21\u578b\u5b9e\u73b0\u3002<\/li>\n<li>id&#xff1a;\u6d88\u606f\u7684\u53ef\u9009\u552f\u4e00\u6807\u8bc6\u7b26\u3002\u7406\u60f3\u60c5\u51b5\u4e0b&#xff0c;\u8fd9\u5e94\u8be5\u7531\u521b\u5efa\u6d88\u606f\u7684\u63d0\u4f9b\u8005 \/ \u6a21\u578b\u63d0\u4f9b\u3002<\/li>\n<\/ul>\n<p>\u5185\u7f6e\u65b9\u6cd5&#xff1a;<\/p>\n<ul>\n<li><span style=\"color:#fe2c24\">pretty_print() \u2192 None&#xff1a;\u6253\u5370\u6d88\u606f\u7684\u6f02\u4eae\u8868\u793a\u3002<\/span><\/li>\n<li>pretty_repr(html: bool &#061; False) \u2192 str&#xff1a;\u83b7\u5f97\u6d88\u606f\u7684\u6f02\u4eae\u8868\u793a\u3002\n<ul>\n<li>\u8bf7\u6c42&#xff1a;\u662f\u5426\u5c06\u6d88\u606f\u683c\u5f0f\u5316\u4e3a HTML\u3002\u5982\u679c\u4e3a True&#xff0c;\u5219\u6d88\u606f\u5c06\u4f7f\u7528 HTML \u6807\u8bb0\u8fdb\u884c\u683c\u5f0f\u5316\u3002\u9ed8\u8ba4\u503c\u4e3a False\u3002<\/li>\n<li>\u54cd\u5e94&#xff1a;\u8fd9\u662f\u6d88\u606f\u7684\u6f02\u4eae\u8868\u793a\u3002<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"color:#fe2c24\">text() \u2192 str&#xff1a;\u83b7\u53d6\u6d88\u606f\u7684\u6587\u672c\u5185\u5bb9\u3002<\/span><\/li>\n<\/ul>\n<h4 id=\"%E5%AF%B9%E8%AF%9D%E6%A8%A1%E5%BC%8F\">\u5bf9\u8bdd\u6a21\u5f0f<\/h4>\n<p>\u5927\u591a\u6570\u5bf9\u8bdd\u90fd\u4ee5\u8bbe\u7f6e\u5bf9\u8bdd\u4e0a\u4e0b\u6587\u7684\u7cfb\u7edf\u6d88\u606f\u5f00\u59cb\u3002\u63a5\u4e0b\u6765\u662f\u5305\u542b\u7528\u6237\u8f93\u5165\u7684\u7528\u6237\u6d88\u606f&#xff0c;\u7136\u540e\u662f\u5305\u542b\u6a21\u578b\u54cd\u5e94\u7684\u52a9\u624b\u6d88\u606f\u3002\u5982\u4e0b\u56fe\u6240\u793a&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"386\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134144-6a9c1c1855c5e.png\" width=\"1074\" \/>\u5de6\u4fa7\u666e\u901a\u5bf9\u8bdd\u6d41\u7a0b&#xff1a;<\/p>\n<ul>\n<li>Turn 1&#xff1a;System message \u2192 Human message \u2192 AI message<\/li>\n<li>Turn 2&#xff1a;Human message \u2192 AI message<\/li>\n<\/ul>\n<h2 id=\"%E4%B8%89%E3%80%81%E7%BC%93%E5%AD%98%E5%8E%86%E5%8F%B2%E6%B6%88%E6%81%AF\">\u4e09\u3001\u7f13\u5b58\u5386\u53f2\u6d88\u606f<\/h2>\n<h3 id=\"%E5%A4%9A%E8%BD%AE%E5%AF%B9%E8%AF%9D\">\u591a\u8f6e\u5bf9\u8bdd<\/h3>\n<p>\u5728\u4e0e\u5927\u578b\u8bed\u8a00\u6a21\u578b\u4ea4\u4e92\u7684\u8fc7\u7a0b\u4e2d&#xff0c;\u6211\u4eec\u5e38\u5e38\u4f53\u9a8c\u5230\u4e0e\u667a\u80fd\u52a9\u624b\u8fdb\u884c\u8fde\u8d2f\u591a\u8f6e\u5bf9\u8bdd\u7684\u4fbf\u5229\u6027\u3002\u4f46\u76ee\u524d\u6211\u4eec\u7684\u7cfb\u7edf\u8fd8\u4e0d\u652f\u6301\u6b64\u529f\u80fd&#xff0c;\u4ee3\u7801\u5982\u4e0b&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"394\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134144-6a9c1c188ca1c.png\" width=\"1068\" \/><\/p>\n<p>\u4ee3\u7801\u8bb2\u89e3&#xff1a;<\/p>\n<li>\u5f00\u5934\u4e24\u884c\u662f\u5bfc\u5165\u6a21\u5757&#xff1a;<span style=\"color:#fe2c24\">ChatOpenAI \u7528\u6765\u521b\u5efa OpenAI \u804a\u5929\u6a21\u578b\u5bf9\u8c61&#xff0c;HumanMessage \u4ee3\u8868\u7528\u6237\u6d88\u606f\u5bf9\u8c61\u3002<\/span><\/li>\n<li>model &#061; ChatOpenAI(model&#061;&#034;gpt-4o-mini&#034;) \u5b9e\u4f8b\u5316\u4e00\u4e2a gpt\u20114o\u2011mini \u6a21\u578b\u5bf9\u8c61&#xff0c;\u540e\u7eed\u5c31\u7528\u8fd9\u4e2a\u5bf9\u8c61\u8c03\u7528\u5927\u6a21\u578b\u3002<\/li>\n<li>\u7b2c\u4e00\u6b21\u8c03\u7528 model.invoke()&#xff1a;\u4f20\u5165\u4e00\u6761\u7528\u6237\u6d88\u606f&#xff0c;\u5185\u5bb9\u662f Hi! I&#039;m Bob&#xff0c;\u544a\u8bc9\u6a21\u578b\u6211\u53eb Bob\u3002\u8c03\u7528\u5b8c\u6210\u5f97\u5230\u8fd4\u56de\u7ed3\u679c result\u3002<\/li>\n<li><span style=\"color:#fe2c24\">result.pretty_print()&#xff1a;\u8c03\u7528\u5185\u7f6e\u65b9\u6cd5&#xff0c;\u683c\u5f0f\u5316\u6253\u5370\u6a21\u578b\u8fd4\u56de\u7684 AI \u56de\u590d\u5185\u5bb9\u3002<\/span><\/li>\n<li>\u7b2c\u4e8c\u6b21\u7ee7\u7eed\u8c03\u7528 model.invoke()&#xff1a;\u8fd9\u91cc\u53ea\u4f20\u4e86\u4e00\u6761\u5168\u65b0\u7684\u7528\u6237\u6d88\u606f What&#039;s my name?&#xff0c;\u6ca1\u6709\u5e26\u4e0a\u4e0a\u4e00\u8f6e \u201c\u6211\u53eb Bob\u201d \u8fd9\u6761\u5386\u53f2\u6d88\u606f\u3002<\/li>\n<li>\u7b2c\u4e8c\u6b21\u4e5f\u8c03\u7528 pretty_print() \u6253\u5370\u65b0\u56de\u590d\u3002<\/li>\n<p>\u6838\u5fc3\u95ee\u9898&#xff1a;<span style=\"color:#fe2c24\">\u6bcf\u4e00\u6b21\u5355\u72ec\u8c03\u7528 invoke&#xff0c;\u6a21\u578b\u53ea\u4f1a\u770b\u5230\u672c\u6b21\u4f20\u5165\u7684\u6d88\u606f&#xff0c;\u4e0d\u4f1a\u81ea\u52a8\u8bb0\u4f4f\u4e4b\u524d\u5bf9\u8bdd\u5185\u5bb9&#xff0c;\u56e0\u4e3a\u6a21\u578b\u672c\u8eab\u6ca1\u6709\u8bb0\u5fc6&#xff0c;\u6240\u4ee5\u7b2c\u4e8c\u6b21\u63d0\u95ee\u5b83\u4e0d\u77e5\u9053\u4f60\u53eb Bob\u3002<\/span><\/p>\n<p>\u6253\u5370\u7ed3\u679c&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"204\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134144-6a9c1c18c5e18.png\" width=\"1095\" \/><\/p>\n<li>\u7b2c\u4e00\u8f6e\u8f93\u51fa&#xff0c;\u6a21\u578b\u6536\u5230 \u201c\u6211\u53eb Bob\u201d&#xff0c;\u6b63\u5e38\u5e94\u7b54\u95ee\u5019\u3002<\/li>\n<li>\u7b2c\u4e8c\u8f6e\u63d0\u95ee\u95ee \u201c\u6211\u7684\u540d\u5b57\u662f\u4ec0\u4e48\u201d&#xff0c;\u6a21\u578b\u56de\u590d\u8bf4\u4e0d\u77e5\u9053 Bob \u7684\u4e2a\u4eba\u4fe1\u606f\u3002<\/li>\n<p>\u539f\u56e0&#xff1a;\u56e0\u4e3a\u7b2c\u4e8c\u6b21 invoke \u53ea\u7ed9\u4e86\u65b0\u95ee\u9898&#xff0c;\u6ca1\u6709\u628a\u7b2c\u4e00\u8f6e\u5bf9\u8bdd\u6d88\u606f\u4e00\u5e76\u4f20\u7ed9\u6a21\u578b&#xff0c;\u6a21\u578b\u770b\u4e0d\u5230\u4e4b\u524d\u7684\u804a\u5929\u8bb0\u5f55\u3002<\/p>\n<p>\u6240\u4ee5\u53ef\u4ee5\u53d1\u73b0&#xff0c;\u804a\u5929\u6a21\u578b\u5e76\u4e0d\u8ba4\u8bc6\u6211\u4eec&#xff0c;\u66f4\u522b\u8bf4\u652f\u6301\u66f4\u591a\u8f6e\u7684\u5bf9\u8bdd\u4e86&#xff5e;<\/p>\n<p>\u4e0b\u9762\u7a0d\u4f5c\u4fee\u6539&#xff0c;\u8ba9\u6211\u4eec\u5c06 AI \u56de\u590d\u7ed9\u6211\u4eec\u7684\u54cd\u5e94\u8ddf\u7740\u65b0\u7684\u7528\u6237\u6d88\u606f\u4e00\u8d77\u53d1\u7ed9\u804a\u5929\u6a21\u578b\u8bd5\u8bd5\u3002\u4ee3\u7801\u5982\u4e0b&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"337\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134144-6a9c1c18f25bd.png\" width=\"589\" \/><\/p>\n<p><span style=\"color:#494949\">\u4ee3\u7801\u8bb2\u89e3&#xff1a;<\/span><\/p>\n<li><span style=\"color:#fe2c24\">\u5bfc\u5165\u90e8\u5206\u76f8\u6bd4\u4e0a\u4e00\u6bb5\u4ee3\u7801\u989d\u5916\u5bfc\u5165\u4e86 AIMessage<\/span>&#xff0c;\u8fd9\u4e2a\u7c7b\u4e13\u95e8\u7528\u6765\u4ee3\u8868\u5927\u6a21\u578b\u8f93\u51fa\u7684\u56de\u590d\u6d88\u606f\u3002<\/li>\n<li>\u4f9d\u65e7\u521b\u5efa gpt\u20114o\u2011mini \u6a21\u578b\u5b9e\u4f8b model\u3002<\/li>\n<li><span style=\"color:#fe2c24\">\u5b9a\u4e49 messages \u5217\u8868&#xff0c;\u8fd9\u4e2a\u5217\u8868\u7528\u6765\u5b58\u653e\u5b8c\u6574\u7684\u5168\u90e8\u5bf9\u8bdd\u5386\u53f2:<\/span>\n<ul>\n<li>\u7b2c\u4e00\u6761&#xff1a;HumanMessage&#xff0c;\u7528\u6237\u8bf4 \u201cHi! I&#039;m Bob\u201d&#xff0c;\u5bf9\u5e94\u7b2c\u4e00\u8f6e\u7528\u6237\u63d0\u95ee\u3002<\/li>\n<li>\u7b2c\u4e8c\u6761&#xff1a;AIMessage&#xff0c;\u628a\u4e0a\u4e00\u8f6e AI \u8fd4\u56de\u7684\u56de\u7b54\u624b\u52a8\u5199\u8fdb\u5217\u8868&#xff0c;\u4ee3\u8868\u6a21\u578b\u4e4b\u524d\u8f93\u51fa\u8fc7\u7684\u5185\u5bb9\u3002<\/li>\n<li>\u7b2c\u4e09\u6761&#xff1a;\u65b0\u7684 HumanMessage&#xff0c;\u7528\u6237\u7ee7\u7eed\u63d0\u95ee \u201cWhat&#039;s my name?\u201d\u3002<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"color:#fe2c24\">\u5c06\u5b58\u653e\u4e86\u5b8c\u6574\u5386\u53f2\u5bf9\u8bdd\u7684 messages \u5217\u8868\u6574\u4f53\u4f20\u5165 model.invoke()\u3002<\/span><\/li>\n<li>\u8c03\u7528 pretty_print() \u76f4\u63a5\u6253\u5370\u6a21\u578b\u672c\u6b21\u8fd4\u56de\u7ed3\u679c\u3002<\/li>\n<p>\u6838\u5fc3\u903b\u8f91&#xff1a;\u5927\u6a21\u578b\u672c\u8eab\u6ca1\u6709\u8bb0\u5fc6\u80fd\u529b&#xff0c;\u8bb0\u5fc6\u9700\u8981\u6211\u4eec\u81ea\u5df1\u7ef4\u62a4\u6d88\u606f\u5217\u8868&#xff0c;\u628a\u8fc7\u53bb\u5168\u90e8\u7528\u6237\u6d88\u606f\u3001AI \u56de\u590d\u5168\u90e8\u653e\u8fdb\u5217\u8868&#xff0c;\u6bcf\u6b21\u8c03\u7528\u90fd\u5b8c\u6574\u4f20\u7ed9\u6a21\u578b&#xff0c;\u6a21\u578b\u624d\u80fd\u770b\u61c2\u4e0a\u4e0b\u6587\u3002<\/p>\n<p>\u6253\u5370\u7ed3\u679c&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"96\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134145-6a9c1c19189e5.png\" width=\"730\" \/><\/p>\n<p>\u8f93\u51fa\u8bb2\u89e3&#xff1a; \u73b0\u5728\u6a21\u578b\u6b63\u786e\u8bc6\u522b\u51fa\u6765\u7528\u6237\u540d\u5b57\u662f Bob\u3002<span style=\"color:#fe2c24\">\u56e0\u4e3a\u8fd9\u4e00\u6b21\u8c03\u7528\u7684\u65f6\u5019\u6211\u4eec\u628a\u4e4b\u524d\u5b8c\u6574\u5bf9\u8bdd\u5168\u90e8\u4ea4\u7ed9\u6a21\u578b&#xff0c;\u6a21\u578b\u8bfb\u53d6\u5386\u53f2\u8bb0\u5f55\u62ff\u5230\u540d\u5b57\u4fe1\u606f&#xff0c;\u5c31\u53ef\u4ee5\u6b63\u786e\u56de\u7b54\u540e\u7eed\u95ee\u9898\u3002<\/span><\/p>\n<p>\u4ece\u7ed3\u679c\u53ef\u77e5&#xff0c;\u53ea\u8981\u5c06\u5386\u53f2\u6d88\u606f\u91cd\u65b0\u53d1\u9001\u7ed9\u804a\u5929\u6a21\u578b&#xff0c;\u90a3\u4e48\u5c31\u53ef\u4ee5\u5b9e\u73b0\u591a\u8f6e\u5bf9\u8bdd\u7684\u529f\u80fd\u3002<\/p>\n<hr \/>\n<h3 id=\"%E5%86%85%E5%AD%98%E7%BC%93%E5%AD%98\">\u5185\u5b58\u7f13\u5b58<\/h3>\n<p>\u901a\u8fc7\u4e0a\u8ff0\u4ee3\u7801\u6211\u4eec\u5c31\u80fd\u77e5\u9053\u5bf9\u4e8e\u5386\u53f2\u6d88\u606f\u7684\u7ba1\u7406\u5c31\u663e\u5f97\u5c24\u4e3a\u91cd\u8981\u3002<span style=\"color:#fe2c24\">\u5728 LangChain \u8001\u7248\u672c\u4e2d\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 RunnableWithMessageHistory \u6d88\u606f\u5386\u53f2\u7c7b\u6765\u5305\u88c5\u53e6\u4e00\u4e2a Runnable \u5e76\u4e3a\u5176\u7ba1\u7406\u804a\u5929\u6d88\u606f\u5386\u53f2\u8bb0\u5f55\u3002\u5b83\u5c06\u8ddf\u8e2a\u6a21\u578b\u7684\u8f93\u5165\u548c\u8f93\u51fa&#xff0c;\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u67d0\u4e2a\u6570\u636e\u5b58\u50a8\u4e2d\u3002<\/span>\u672a\u6765\u7684\u4ea4\u4e92\u5c06\u52a0\u8f7d\u8fd9\u4e9b\u6d88\u606f&#xff0c;\u5e76\u5c06\u5176\u4f5c\u4e3a\u8f93\u5165\u7684\u4e00\u90e8\u5206\u4f20\u9012\u7ed9\u94fe\u3002<\/p>\n<p>\u4ee3\u7801\u5982\u4e0b&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"927\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134145-6a9c1c1924db3.png\" width=\"981\" \/><\/p>\n<p>\u4ee3\u7801\u8bb2\u89e3&#xff1a;<\/p>\n<p>1. \u5bfc\u5165\u6a21\u5757&#xff1a;<\/p>\n<ul>\n<li>ChatOpenAI&#xff1a;\u521b\u5efa\u804a\u5929\u5927\u6a21\u578b\u5b9e\u4f8b\u3002<\/li>\n<li>HumanMessage\u3001AIMessage&#xff1a;\u7528\u6237\u6d88\u606f\u3001AI \u6d88\u606f\u5bf9\u8c61\u3002<\/li>\n<li><span style=\"color:#fe2c24\">BaseChatMessageHistory&#xff1a;\u804a\u5929\u5386\u53f2\u7684\u62bd\u8c61\u57fa\u7c7b&#xff1b;InMemoryChatMessageHistory \u662f\u5185\u5b58\u7248\u5b9e\u73b0&#xff0c;\u6d88\u606f\u4fdd\u5b58\u5728\u7a0b\u5e8f\u5185\u5b58\u91cc&#xff0c;\u7a0b\u5e8f\u5173\u95ed\u6570\u636e\u5c31\u6d88\u5931\u3002<\/span><\/li>\n<li>RunnableWithMessageHistory \u4e13\u95e8\u7528\u6765\u7ed9\u6a21\u578b\u81ea\u52a8\u7ef4\u62a4\u5bf9\u8bdd\u5386\u53f2\u7684\u5305\u88c5\u5668&#xff0c;\u4e0d\u7528\u6211\u4eec\u624b\u52a8\u62fc\u63a5 messages \u5217\u8868\u3002<\/li>\n<\/ul>\n<p>2. \u521b\u5efa\u6a21\u578b\u5bf9\u8c61 model&#xff0c;\u4f7f\u7528 gpt\u20114o\u2011mini \u6a21\u578b\u3002<\/p>\n<\/p>\n<p><span style=\"color:#fe2c24\">3. store &#061; {}&#xff1a;\u5b9a\u4e49\u4e00\u4e2a\u5b57\u5178\u5145\u5f53\u5168\u5c40\u5b58\u50a8\u4ed3\u5e93&#xff0c;\u7528\u6765\u5b58\u653e\u4e0d\u540c\u4f1a\u8bdd\u7684\u804a\u5929\u5386\u53f2\u3002<\/span>\u5b57\u5178\u7684 key \u5c31\u662f session_id&#xff0c;value \u662f\u5bf9\u5e94\u4f1a\u8bdd\u7684\u6d88\u606f\u5386\u53f2\u5bf9\u8c61\u3002<\/p>\n<\/p>\n<p>4. get_session_history \u56de\u8c03\u51fd\u6570&#xff1a;\u63a5\u6536 session_id \u4f1a\u8bdd\u7f16\u53f7\u4f5c\u4e3a\u53c2\u6570\u3002<\/p>\n<ul>\n<li>\u5982\u679c\u8fd9\u4e2a session_id \u4e0d\u5728 store \u5b57\u5178\u5c31\u65b0\u5efa\u4e00\u4e2a\u5185\u5b58\u804a\u5929\u5386\u53f2\u5bf9\u8c61\u5b58\u5165 store\u3002<\/li>\n<li>\u5982\u679c\u5df2\u7ecf\u5b58\u5728\u5c31\u76f4\u63a5\u8fd4\u56de\u5df2\u6709\u7684\u5386\u53f2\u5bf9\u8c61\u3002\u4f5c\u7528&#xff1a;\u6839\u636e\u4f1a\u8bdd ID \u53d6\u51fa\u8be5\u4f1a\u8bdd\u5168\u90e8\u804a\u5929\u8bb0\u5f55&#xff0c;\u4e0d\u540c session_id \u4ee3\u8868\u4e0d\u540c\u7528\u6237\/\u4e0d\u540c\u5bf9\u8bdd&#xff0c;\u4e92\u76f8\u9694\u79bb\u4e92\u4e0d\u5e72\u6270\u3002<\/li>\n<\/ul>\n<p><span style=\"color:#fe2c24\">5. with_message_history &#061; RunnableWithMessageHistory(model, get_session_history) \u628a\u539f\u59cb model \u4f20\u5165&#xff0c;\u7ed1\u5b9a\u5386\u53f2\u56de\u8c03\u51fd\u6570&#xff0c;\u5f97\u5230\u5305\u88c5\u540e\u7684\u5bf9\u8c61\u3002\u4e4b\u540e\u8c03\u7528\u8fd9\u4e2a\u5bf9\u8c61&#xff0c;\u6846\u67b6\u5185\u90e8\u81ea\u52a8\u5e2e\u6211\u4eec\u8ffd\u52a0\u3001\u4fdd\u5b58\u5386\u53f2\u6d88\u606f&#xff0c;\u4e0d\u9700\u8981\u624b\u52a8\u7ef4\u62a4 messages \u5217\u8868\u3002<\/span><\/p>\n<\/p>\n<p><span style=\"color:#ff9900\">6. config &#061; {&#034;configurable&#034;: {&#034;session_id&#034;: &#034;1&#034;}} \u914d\u7f6e\u53c2\u6570&#xff0c;\u6307\u5b9a\u5f53\u524d\u4f7f\u7528\u4f1a\u8bdd\u7f16\u53f7\u4e3a&#034;1&#034;\u3002\u8c03\u7528 invoke \u7684\u65f6\u5019\u5fc5\u987b\u4f20\u5165\u8fd9\u4e2a config&#xff0c;\u6846\u67b6\u624d\u80fd\u77e5\u9053\u8be5\u7528\u54ea\u4e00\u4efd\u804a\u5929\u5386\u53f2\u3002<\/span><\/p>\n<\/p>\n<p>7. \u7b2c\u4e00\u6b21 invoke \u8c03\u7528&#xff1a;\u4f20\u5165\u7528\u6237\u6d88\u606f Hi! I&#039;m Bob&#xff0c;\u540c\u65f6\u5e26\u4e0a config\u3002\u6846\u67b6\u5185\u90e8\u81ea\u52a8\u4fdd\u5b58\u672c\u6b21\u7528\u6237\u6d88\u606f\u548c AI \u56de\u590d\u5230 session_id&#061;1 \u5bf9\u5e94\u7684\u5185\u5b58\u5386\u53f2\u3002\u8c03\u7528 pretty_print() \u6253\u5370\u56de\u590d\u3002<\/p>\n<\/p>\n<p>8. \u7b2c\u4e8c\u6b21 invoke \u8c03\u7528&#xff1a;\u53ea\u4f20\u5165\u65b0\u95ee\u9898 What&#039;s my name?&#xff0c;\u4e0d\u9700\u8981\u624b\u52a8\u5e26\u4e0a\u4e4b\u524d\u7684\u5bf9\u8bdd\u3002\u6846\u67b6\u4f1a\u81ea\u52a8\u8bfb\u53d6 session_id&#061;1 \u7684\u5168\u90e8\u5386\u53f2\u6d88\u606f&#xff0c;\u62fc\u63a5\u5b8c\u6574\u6d88\u606f\u5217\u8868\u4f20\u7ed9\u5927\u6a21\u578b&#xff0c;\u540c\u65f6\u4fdd\u5b58\u65b0\u4e00\u8f6e\u5bf9\u8bdd\u3002<\/p>\n<p>\u6ce8\u610f&#xff1a;InMemoryChatMessageHistory \u662f\u5185\u5b58\u5b58\u50a8&#xff0c;\u7a0b\u5e8f\u4e00\u65e6\u91cd\u542f store \u5b57\u5178\u5168\u90e8\u6e05\u7a7a&#xff0c;\u8bb0\u5fc6\u5c31\u4e22\u5931\u4e86&#xff0c;\u4e0d\u80fd\u6301\u4e45\u5316\u4fdd\u5b58\u3002<\/p>\n<p>RunnableWithMessageHistory \u7c7b\u521d\u59cb\u5316\u53c2\u6570\u8bf4\u660e&#xff1a;<\/p>\n<ul>\n<li>\n<p>runnable&#xff1a;\u88ab\u5305\u88c5 Runnable \u5b9e\u4f8b&#xff0c;\u8fd9\u91cc\u5c31\u662f\u6211\u4eec\u5b9a\u4e49\u7684\u804a\u5929\u6a21\u578b\u3002<\/p>\n<\/li>\n<li>\n<p>get_session_history&#xff1a;\u8fd4\u56de\u7c7b\u578b\u4e3a BaseChatMessageHistory \u7684\u56de\u8c03\u51fd\u6570\u3002\u63a5\u6536 session_id \u5b57\u7b26\u4e32\u5e76\u8fd4\u56de\u5bf9\u5e94\u4f1a\u8bdd\u7684\u804a\u5929\u6d88\u606f\u5386\u53f2\u5b9e\u4f8b\u3002<\/p>\n<\/li>\n<\/ul>\n<p>RunnableWithMessageHistory \u7c7b\u65b9\u6cd5\u8bf4\u660e&#xff1a;<\/p>\n<ul>\n<li>\n<p>.invoke()\u65b9\u6cd5&#xff1a;\u7528\u6cd5\u548c\u666e\u901a Runnable \u7684 invoke \u4e00\u81f4\u3002\u4f46\u662f\u5fc5\u987b\u4f20\u5165config&#061; {&#034;configurable&#034;: {&#034;session_id&#034;: &#034;xxx&#034;}} \u914d\u7f6e&#xff0c;\u6846\u67b6\u9760\u8fd9\u4e2a\u62ff\u5230\u4f1a\u8bdd id \u8bfb\u53d6\u5bf9\u5e94\u7684\u804a\u5929\u5386\u53f2\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u6700\u7ec8\u6253\u5370\u7ed3\u679c&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"200\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134145-6a9c1c196c736.png\" width=\"891\" \/><\/p>\n<p>\u6b64\u65f6\u6211\u4eec\u901a\u8fc7\u5185\u5b58\u7f13\u5b58\u5c31\u6210\u529f\u5b9e\u73b0\u8bb0\u5fc6\u529f\u80fd&#xff01;<\/p>\n<h4 id=\"%E8%AF%B4%E6%98%8E\">\u8bf4\u660e<\/h4>\n<p>\u4ece LangChain \u7684 v0.3 \u7248\u672c\u5f00\u59cb&#xff0c;\u5b98\u65b9\u5efa\u8bae LangChain \u7528\u6237\u4e0d\u8981\u4f7f\u7528 RunnableWithMessageHist ory&#xff0c;\u800c\u662f\u5229\u7528 LangGraph \u6301\u4e45\u6027\u6765\u5b8c\u6210\u3002<\/p>\n<p>\u539f\u56e0\u662f\u5b83\u4eec\u7684\u529f\u80fd\u6709\u9650&#xff0c;\u4e0d\u592a\u9002\u5408\u73b0\u5b9e\u4e16\u754c\u7684\u5bf9\u8bdd\u5f0f AI \u5e94\u7528\u7a0b\u5e8f\u3002\u8fd9\u4e9b\u5185\u5b58\u62bd\u8c61\u7f3a\u4e4f\u5bf9\u591a\u7528\u6237\u548c\u591a\u5bf9\u8bdd\u573a\u666f\u7684\u5185\u7f6e\u652f\u6301&#xff0c;\u800c\u8fd9\u5bf9\u4e8e\u5b9e\u9645\u7684\u5bf9\u8bdd\u5f0f\u4eba\u5de5\u667a\u80fd\u7cfb\u7edf\u81f3\u5173\u91cd\u8981\u3002<span style=\"color:#fe2c24\">\u8fd9\u4e9b\u5b9e\u73b0\u4e2d\u7684\u5927\u591a\u6570\u5df2\u5728 LangChain 0.3.x \u4e2d\u88ab\u6b63\u5f0f\u5f03\u7528&#xff0c;\u53d6\u800c\u4ee3\u4e4b\u7684\u662f LangGraph \u6301\u4e45\u6027\u3002<\/span>LangGraph \u6301\u4e45\u6027\u975e\u5e38\u7075\u6d3b&#xff0c;\u53ef\u4ee5\u652f\u6301\u6bd4 RunnableWithMessageHistory \u63a5\u53e3\u66f4\u5e7f\u6cdb\u7684\u7528\u4f8b\u3002\u6211\u4eec\u4f1a\u5728 LangGraph \u7bc7\u7ae0\u4e2d\u5b66\u4e60\u5b83&#xff01;<\/p>\n<p>\u56e0\u6b64&#xff0c;RunnableWithMessageHistory \u8fd9\u90e8\u5206\u6211\u4eec\u8bb2\u89e3\u7684\u5e76\u4e0d\u6df1\u5165\u3002\u5728\u4e4b\u524d\u5bf9\u4e8e\u751f\u4ea7\u73af\u5883&#xff0c;\u6211\u4eec\u8fd8\u9700\u8981\u4f7f\u7528\u804a\u5929\u6d88\u606f\u5386\u53f2\u8bb0\u5f55\u7684\u6301\u4e45\u5316\u5b9e\u73b0&#xff0c;\u4f8b\u5982 RedisChatMessageHistory()&#xff0c;\u800c\u4e0d\u662fInMemoryChatMessageHistory()&#xff0c;\u4f46\u73b0\u5728\u4e5f\u5df2\u4e0d\u63a8\u8350\u65b0\u5e94\u7528\u4f7f\u7528\u5b83\u4eec\u4e86\u3002<\/p>\n<h2 id=\"%E5%9B%9B%E3%80%81%E7%AE%A1%E7%90%86%E5%8E%86%E5%8F%B2%E6%B6%88%E6%81%AF\">\u56db\u3001\u7ba1\u7406\u5386\u53f2\u6d88\u606f<\/h2>\n<h3 id=\"%E5%89%8D%E7%BD%AE%E6%A6%82%E5%BF%B5\">\u524d\u7f6e\u6982\u5ff5<\/h3>\n<p>\u7ba1\u7406\u5386\u53f2\u6d88\u606f&#xff0c;\u65e0\u975e\u5c31\u662f\u7406\u89e3\u5982\u4f55 \u201c\u7ba1\u7406\u201d&#xff0c;\u201c\u7ba1\u7406\u201d \u65e0\u975e\u4e5f\u5c31\u662f\u4e00\u4e9b \u201cCRUD\u201d\u3002\u90a3\u4e48\u5728\u4e86\u89e3\u5982\u4f55\u7ba1\u7406\u6d88\u606f\u4e4b\u524d&#xff0c;\u9700\u8981\u5148\u4e86\u89e3\u4e0b\u591a\u8f6e\u5bf9\u8bdd\u7684\u6838\u5fc3\u6982\u5ff5&#xff1a;<\/p>\n<h4 id=\"%E4%B8%8A%E4%B8%8B%E6%96%87%E7%AA%97%E5%8F%A3\">\u4e0a\u4e0b\u6587\u7a97\u53e3<\/h4>\n<p>\u4e0a\u4e0b\u6587\u7a97\u53e3 : <span style=\"color:#fe2c24\">\u4e0a\u4e0b\u6587\u7a97\u53e3\u53ef\u4ee5\u7406\u89e3\u4e3a\u6a21\u578b\u7684 \u201c\u77ed\u671f\u5de5\u4f5c\u8bb0\u5fc6\u533a\u201d&#xff0c;\u5373 LLM \u5728\u4e00\u6b21\u5904\u7406\u8bf7\u6c42\u65f6\u6240\u80fd\u67e5\u770b\u548c\u5904\u7406\u7684\u6700\u5927 Token \u6570\u91cf<\/span>&#xff0c;\u5b83\u5305\u542b\u4e86&#xff1a;<\/p>\n<ul>\n<li>\u7528\u6237\u7684\u8f93\u5165<\/li>\n<li>\u5927\u6a21\u578b\u7684\u8f93\u51fa<\/li>\n<li>\u6709\u65f6\u8fd8\u5305\u62ec\u7cfb\u7edf\u6307\u4ee4&#xff08;SystemMessage&#xff09;\u548c\u5bf9\u8bdd\u5386\u53f2\u3002<\/li>\n<\/ul>\n<p>\u4e0d\u540c\u5927\u6a21\u578b\u652f\u6301\u7684\u4e0a\u4e0b\u6587\u7a97\u53e3\u5927\u5c0f\u4e0d\u540c&#xff0c;\u4f8b\u5982&#xff1a;<\/p>\n<ul>\n<li>OpenAI \u4e0b GPT\u20115 \u6a21\u578b\u4e0a\u4e0b\u6587\u7a97\u53e3\u4e3a 400000&#xff08;\u6700\u5927 Token \u6570\u91cf&#xff09;<\/li>\n<li>GPT\u20114.1 \u6a21\u578b\u4e0a\u4e0b\u6587\u7a97\u53e3\u4e3a 1047576&#xff08;\u6700\u5927 Token \u6570\u91cf&#xff09;<\/li>\n<li>\u5176\u4ed6\u6a21\u578b\u4e0a\u4e0b\u6587\u7a97\u53e3\u53ef\u53c2\u8003\u5bf9\u5e94\u6a21\u578b\u5b98\u7f51\u8bf4\u660e&#xff0c;\u5982 OpenAI \u4e0b\u6a21\u578b\u53ef\u4ee5\u53c2\u8003\u5b98\u7f51\u6587\u6863\u3002<\/li>\n<\/ul>\n<h4 id=\"Token\">Token<\/h4>\n<p><span style=\"color:#fe2c24\">\u5728\u81ea\u7136\u8bed\u8a00\u5904\u7406&#xff08;NLP&#xff09;\u4e2d&#xff0c;Token \u662f\u6587\u672c\u7684\u57fa\u672c\u5355\u4f4d\u3002\u5b83\u4e0d\u662f\u5b8c\u5168\u7b49\u540c\u4e8e\u4e00\u4e2a\u5355\u8bcd\u6216\u4e00\u4e2a\u6c49\u5b57&#xff0c;\u800c\u662f\u4e00\u4e2a\u66f4\u7ec6\u7c92\u5ea6\u7684\u5212\u5206\u3002<\/span><\/p>\n<p>\u4e3a\u4ec0\u4e48\u7528 Token&#xff1f;<\/p>\n<p>\u56e0\u4e3a\u8ba1\u7b97\u673a\u65e0\u6cd5\u76f4\u63a5\u7406\u89e3\u6587\u5b57&#xff0c;\u5b83\u9700\u8981\u5c06\u6587\u672c\u8f6c\u6362\u4e3a\u6570\u5b57\u5411\u91cf\u3002\u800c\u00a0Tokenization \u4ee4\u724c\u5316\u5c31\u662f\u8fd9\u4e2a\u8f6c\u6362\u8fc7\u7a0b\u7684\u7b2c\u4e00\u6b65&#xff0c;\u5c06\u53e5\u5b50\u5206\u89e3\u6210\u6a21\u578b\u53ef\u4ee5\u7406\u89e3\u548c\u5904\u7406\u7684\u788e\u7247\u3002<\/p>\n<ul>\n<li>\n<p>\u5bf9\u4e8e\u82f1\u6587&#xff1a;1 \u4e2a Token \u2248 4 \u4e2a\u5b57\u7b26\u6216 0.75 \u4e2a\u5355\u8bcd&#xff0c;1000 \u4e2a Tokens \u7ea6\u7b49\u4e8e 750 \u4e2a\u82f1\u6587\u5355\u8bcd\u3002 \u4e00\u4e2a Token \u53ef\u4ee5\u662f\u4e00\u4e2a\u5355\u8bcd (\u5982 &#034;apple&#034;)\u3001\u4e00\u4e2a\u8bcd\u6839 (\u5982 &#034;un&#034; \u5728 &#034;unlikely&#034; \u4e2d)&#xff0c;\u6216\u8005\u4e00\u4e2a\u6807\u70b9\u7b26\u53f7 (\u5982 &#034;.&#034;)\u3002<span style=\"color:#ff9900\">\u4f8b\u5982\u00a0&#034;ChatGPT is great!&#034; \u53ef\u80fd\u4f1a\u88ab\u5206\u6210 [&#034;Chat&#034;, &#034;G&#034;, &#034;PT&#034;, &#034; is&#034;, &#034; great&#034;, &#034;!&#034;] \u8fd9 6 \u4e2a Token\u3002<\/span><\/p>\n<\/li>\n<li>\n<p>\u5bf9\u4e8e\u4e2d\u6587&#xff1a;1 \u4e2a\u6c49\u5b57 \u2248 1.5\u20112 \u4e2a Tokens&#xff0c;1000 \u4e2a Tokens \u5927\u7ea6\u76f8\u5f53\u4e8e 500\u2011700 \u4e2a\u6c49\u5b57\u3002\u5e38\u89c1\u7684\u8bcd\u548c\u5b57\u53ef\u80fd\u662f\u4e00\u4e2a Token&#xff0c;\u751f\u50fb\u5b57\u6216\u590d\u6742\u8bcd\u53ef\u80fd\u4f1a\u88ab\u62c6\u5206\u6210\u591a\u4e2a\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u4e3e\u4e2a\u4f8b\u5b50&#xff0c;\u4e0a\u4e0b\u6587\u7a97\u53e3\u5c31\u50cf\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u5de5\u4f5c\u53f0&#xff0c;\u518d\u628a Token \u6bd4\u4f5c\u4e00\u4e2a\u79ef\u6728\u96f6\u4ef6&#xff0c;\u628a\u5927\u6a21\u578b\u6bd4\u4f5c\u4e00\u4e2a\u5de5\u5320\u3002\u5de5\u5320\u9700\u8981\u62fc\u51fa\u6a21\u578b&#xff0c;\u5fc5\u987b\u628a\u6240\u9700\u7684\u96f6\u4ef6 (\u8f93\u5165\u7684 Token) \u653e\u5728\u5de5\u4f5c\u53f0\u4e0a&#xff0c;\u4e00\u8fb9\u62fc\u88c5 (\u751f\u6210\u56de\u590d)&#xff0c;\u4e00\u8fb9\u628a\u62fc\u597d\u7684\u90e8\u5206 (\u8f93\u51fa\u7684 Token) \u4e5f\u653e\u5728\u5de5\u4f5c\u53f0\u4e0a\u3002\u6574\u4e2a\u8fc7\u7a0b (\u8f93\u5165 &#043; \u8f93\u51fa) \u4e2d&#xff0c;\u5de5\u4f5c\u53f0\u4e0a\u7684\u6240\u6709\u79ef\u6728 (Tokens) \u603b\u6570\u90fd\u4e0d\u80fd\u8d85\u8fc7\u5de5\u4f5c\u53f0\u7684\u6700\u5927\u5bb9\u91cf (\u4e0a\u4e0b\u6587\u7a97\u53e3\u5927\u5c0f)\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"417\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134145-6a9c1c1980807.png\" width=\"786\" \/><\/p>\n<h3 id=\"%E6%B6%88%E6%81%AF%E8%A3%81%E5%89%AA\">\u6d88\u606f\u88c1\u526a<\/h3>\n<p>\u6709\u4e86\u4e0a\u4e0b\u6587\u7a97\u53e3\u548c Token \u7684\u8ba4\u77e5&#xff0c;\u6211\u4eec\u518d\u6765\u770b\u591a\u8f6e\u5bf9\u8bdd\u7684\u5b9e\u73b0\u539f\u7406&#xff0c;\u5176\u5b9e\u5c31\u662f&#xff1a;<\/p>\n<ul>\n<li><span style=\"color:#fe2c24\">\u8f93\u5165 &#061; \u7cfb\u7edf\u6d88\u606f &#043; \u5bf9\u8bdd\u5386\u53f2 &#043; \u6700\u65b0\u7528\u6237\u95ee\u9898<\/span><\/li>\n<li><span style=\"color:#fe2c24\">\u5bf9\u4e8e\u6a21\u578b\u6765\u8bf4&#xff0c;\u5e76\u4e0d\u771f\u6b63 \u201c\u8bb0\u5fc6\u201d&#xff0c;\u800c\u662f\u6bcf\u6b21\u90fd\u5c06\u5b8c\u6574\u7684\u4e0a\u4e0b\u6587\u91cd\u65b0\u8f93\u5165\u3002<\/span><\/li>\n<\/ul>\n<p>\u7531\u4e8e\u6240\u6709\u6a21\u578b\u7684\u4e0a\u4e0b\u6587\u7a97\u53e3\u5927\u5c0f\u90fd\u662f\u6709\u9650\u7684&#xff0c;\u8fd9\u610f\u5473\u7740\u4f5c\u4e3a\u8f93\u5165\u7684 Token \u4e5f\u662f\u6709\u9650\u7684\u3002\u5982\u679c\u6709\u7d2f\u79ef\u4e86\u5f88\u957f\u7684\u6d88\u606f\u5386\u53f2\u8bb0\u5f55&#xff0c;\u5219<span style=\"color:#fe2c24\">\u9700\u8981\u7ba1\u7406\u4f20\u9012\u7ed9\u6a21\u578b\u7684\u6d88\u606f\u7684\u957f\u5ea6\u3002<\/span><\/p>\n<p>\u800c\u4e0b\u9762\u6211\u4eec\u8981\u8bb2\u7684 trim_messages\u00a0\u5c31\u80fd\u7528\u4e8e\u5c06\u804a\u5929\u5386\u53f2\u8bb0\u5f55\u7684\u5927\u5c0f\u51cf\u5c0f\u4e3a\u6307\u5b9a\u7684\u4ee4\u724c\u8ba1\u6570\u6216\u6307\u5b9a\u7684\u6d88\u606f\u8ba1\u6570\u3002<\/p>\n<h4 id=\"%E5%9F%BA%E4%BA%8E%E8%BE%93%E5%85%A5%20Token%20%E6%95%B0%E7%9A%84%E4%BF%AE%E5%89%AA\">\u57fa\u4e8e\u8f93\u5165 Token \u6570\u7684\u4fee\u526a<\/h4>\n<p>\u4e0b\u9762\u6f14\u793a\u4e00\u4e2a\u901a\u8fc7 trim_messages \u88c1\u526a\u6d88\u606f\u7684\u793a\u4f8b&#xff08;\u57fa\u4e8e\u8f93\u5165 Token \u6570\u7684\u4fee\u526a&#xff09;\u3002<\/p>\n<p>\u5148\u6765\u770b\u770b\u4e0d\u505a\u4efb\u4f55\u8f93\u5165\u9650\u5236\u7684\u804a\u5929&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"648\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134145-6a9c1c19ce4b4.png\" width=\"943\" \/><\/p>\n<p>\u4ee3\u7801\u8bb2\u89e3&#xff1a;<\/p>\n<li>\u5bfc\u5165\u6a21\u578b\u7c7b\u3001\u5404\u7c7b\u6d88\u606f\u5bf9\u8c61&#xff0c;\u8fd8\u6709\u88c1\u526a\u5de5\u5177 trim_messages\u3002<\/li>\n<li>\u521b\u5efa gpt\u20114o\u2011mini \u6a21\u578b\u5b9e\u4f8b\u3002<\/li>\n<li>messages \u5217\u8868\u5b8c\u6574\u5b58\u653e\u5168\u90e8\u5bf9\u8bdd&#xff0c;\u5305\u542b\u7cfb\u7edf\u63d0\u793a\u3001\u591a\u8f6e\u7528\u6237\u6d88\u606f\u3001AI \u56de\u590d&#xff0c;\u6700\u540e\u4e00\u6761\u7528\u6237\u63d0\u95ee\u8be2\u95ee\u81ea\u5df1\u7684\u540d\u5b57\u3002<\/li>\n<li>\u5c06\u5168\u90e8\u5386\u53f2\u6d88\u606f\u76f4\u63a5\u4f20\u5165 invoke&#xff0c;\u6253\u5370\u5b8c\u6574\u8fd4\u56de\u5bf9\u8c61\u3002\u8fd4\u56de\u5bf9\u8c61\u4e0d\u5149\u5305\u542b AI \u56de\u7b54\u6587\u672c&#xff0c;\u8fd8\u643a\u5e26 token \u7528\u91cf\u3001\u6a21\u578b id \u7b49\u5143\u6570\u636e\u3002<\/li>\n<p>\u6253\u5370\u7ed3\u679c&#xff1a;<\/p>\n<p><span style=\"color:#fe2c24\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"567\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134146-6a9c1c1a06a48.png\" width=\"374\" \/><\/span><\/p>\n<p><span style=\"color:#fe2c24\">\u6a21\u578b\u6b63\u786e\u56de\u7b54\u51fa\u540d\u5b57\u662f Bob\u3002prompt_tokens:88 \u4ee3\u8868\u8f93\u5165\u4e00\u5171\u6d88\u8017 88 \u4e2a token\u3002completion_tokens:5 \u662f\u6a21\u578b\u8f93\u51fa\u6d88\u8017\u7684 token&#xff0c;\u5408\u8ba1 93 \u4e2a token\u3002<\/span><\/p>\n<p>\u4ece\u6253\u5370\u7ed3\u679c\u770b\u6765&#xff0c;LLM \u8fd8\u8ba4\u8bc6\u6211\u4eec&#xff0c;\u4e14\u5171\u8f93\u5165\u4e86 88 tokens\u3002\u63a5\u4e0b\u6765\u8ba9\u6211\u4eec\u5bf9\u6d88\u606f\u8fdb\u884c\u88c1\u526a&#xff0c;\u6211\u4eec\u53ea\u5e0c\u671b\u5c06\u6765\u8f93\u5165\u65f6&#xff0c;\u6700\u591a\u8f93\u5165 65 tokens&#xff0c;\u8d85\u51fa\u7684\u9700\u8981\u6309\u7167\u4e00\u5b9a\u7684 \u201c\u89c4\u5219\u201d \u8fdb\u884c\u88c1\u526a\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"1064\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134146-6a9c1c1a1eca3.png\" width=\"1052\" \/><\/p>\n<p>\u4ee3\u7801\u8bb2\u89e3<\/p>\n<\/p>\n<p>1. <span style=\"color:#fe2c24\">trimmer &#061; trim_messages(&#8230;) \u6784\u9020\u6d88\u606f\u4fee\u526a\u5668\u3002<\/span><\/p>\n<ul>\n<li>max_tokens&#061;65&#xff1a;\u4fee\u526a\u540e\u8f93\u5165\u6d88\u606f\u603b token \u4e0a\u9650\u8bbe\u4e3a 65\u3002<\/li>\n<li>strategy&#061;&#034;last&#034;&#xff1a;\u4ece\u65e7\u6d88\u606f\u5f00\u59cb\u4e22\u5f03&#xff0c;\u4f18\u5148\u4fdd\u7559\u9760\u540e\u6700\u65b0\u7684\u5bf9\u8bdd\u3002<\/li>\n<li>token_counter&#061;model&#xff1a;\u76f4\u63a5\u4f7f\u7528\u6a21\u578b\u672c\u8eab\u505a token \u8ba1\u6570&#xff0c;\u4e0d\u540c\u6a21\u578b token \u8ba1\u7b97\u89c4\u5219\u4e0d\u4e00\u6837&#xff0c;\u4ea4\u7ed9\u6a21\u578b\u8ba1\u7b97\u6700\u51c6\u786e\u3002<\/li>\n<li>include_system&#061;True&#xff1a;\u5f3a\u5236\u4fdd\u7559 SystemMessage \u7cfb\u7edf\u63d0\u793a\u8bcd&#xff0c;\u4e0d\u4f1a\u628a\u7cfb\u7edf\u6d88\u606f\u88c1\u6389\u3002<\/li>\n<li>allow_partial&#061;False&#xff1a;\u4e0d\u5141\u8bb8\u628a\u5355\u6761\u6d88\u606f\u62c6\u5f00\u622a\u65ad&#xff0c;\u53ea\u80fd\u6574\u6761\u6d88\u606f\u4e22\u5f03\u3002<\/li>\n<li><span style=\"color:#fe2c24\">start_on&#061;&#034;human&#034;&#xff1a;\u4fee\u526a\u5b8c\u6210\u4e4b\u540e&#xff0c;\u7b2c\u4e00\u6761\u975e\u7cfb\u7edf\u6d88\u606f\u5fc5\u987b\u662f\u7528\u6237 HumanMessage \u7c7b\u578b&#xff0c;\u907f\u514d\u4fee\u526a\u5b8c\u5f00\u5934\u6b8b\u7559 AI \u6d88\u606f\u3002<\/span><\/li>\n<\/ul>\n<p>2. chain &#061; trimmer | model&#xff0c;LangChain \u7684\u7ba1\u9053\u5199\u6cd5&#xff1a;\u5148\u8dd1\u6d88\u606f\u88c1\u526a&#xff0c;\u628a\u88c1\u526a\u5b8c\u6bd5\u7684\u6d88\u606f\u5217\u8868\u9001\u5165\u5927\u6a21\u578b\u3002<\/p>\n<\/p>\n<p>3. chain.invoke(messages)&#xff0c;\u4f20\u5165\u5b8c\u6574\u539f\u59cb\u6d88\u606f\u5217\u8868&#xff0c;\u94fe\u5185\u90e8\u5148\u88c1\u526a&#xff0c;\u518d\u8c03\u7528\u6a21\u578b\u3002<\/p>\n<p>\u6253\u5370\u7ed3\u679c&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"675\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134146-6a9c1c1a8fbc2.png\" width=\"466\" \/><\/p>\n<p>\u7ed3\u679c\u89e3\u8bfb<\/p>\n<ul>\n<li>input_tokens \u53d8\u6210 60&#xff0c;\u88ab\u63a7\u5236\u5728\u8bbe\u7f6e\u7684 max_tokens&#061;65 \u4ee5\u5185\u3002<\/li>\n<li><span style=\"color:#fe2c24\">\u6a21\u578b\u56de\u7b54 \u201c\u6211\u4e0d\u77e5\u9053\u4f60\u7684\u540d\u5b57\u201d&#xff0c;\u4ee3\u8868\u65e9\u671f\u5bf9\u8bdd hi! I&#039;m bob \u8fd9\u4e00\u8f6e\u6d88\u606f\u5df2\u7ecf\u88ab\u88c1\u526a\u4e22\u5f03&#xff0c;\u6a21\u578b\u770b\u4e0d\u5230\u6700\u65e9\u81ea\u6211\u4ecb\u7ecd\u7684\u5185\u5bb9\u3002<\/span><\/li>\n<li>\u88c1\u526a\u7b56\u7565 last \u4ee3\u8868\u65e7\u5386\u53f2\u88ab\u5220\u6389&#xff0c;\u53ea\u7559\u4e0b\u9760\u540e\u7684\u90e8\u5206\u5bf9\u8bdd&#xff0c;\u7cfb\u7edf\u6d88\u606f\u88ab\u4fdd\u7559\u3002<\/li>\n<li>\u8fd9\u5c31\u662f\u957f\u5bf9\u8bdd\u7684\u5e38\u89c1\u95ee\u9898&#xff1a;\u6d88\u606f\u88c1\u526a\u4f1a\u4e22\u5931\u4e45\u8fdc\u5386\u53f2\u4fe1\u606f&#xff0c;\u662f\u6743\u8861\u4e0a\u4e0b\u6587\u957f\u5ea6\u4e0e\u8bb0\u5fc6\u4fdd\u7559\u7684\u53d6\u820d\u3002<\/li>\n<\/ul>\n<p>\u4e0b\u9762\u6211\u4eec\u67e5\u770b\u88c1\u526a\u540e\u5b9e\u9645\u6d88\u606f\u5185\u5bb9:<\/p>\n<p>\u6211\u4eec\u76f4\u63a5\u8c03\u7528 trimmer.invoke(messages) \u6253\u5370\u88c1\u526a\u5668\u8f93\u51fa&#xff0c;\u5c31\u80fd\u770b\u89c1\u5230\u5e95\u54ea\u4e9b\u6d88\u606f\u88ab\u5220\u6389\u3001\u54ea\u4e9b\u88ab\u4fdd\u7559\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"250\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134146-6a9c1c1aa7d40.png\" width=\"389\" \/><\/p>\n<p>\u8f93\u51fa\u7ed3\u679c:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"288\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260905134146-6a9c1c1abba7f.png\" width=\"1019\" \/><\/p>\n<p>\u4ece\u7ed3\u679c\u6765\u770b&#xff0c;\u786e\u5b9e\u662f\u6309\u7167\u6211\u4eec\u7ed9\u5b9a\u7684\u88c1\u526a \u201c\u89c4\u5219\u201d \u6765\u5b8c\u6210\u7684\u3002\u4fee\u526a\u804a\u5929\u8bb0\u5f55\u540e&#xff0c;\u751f\u6210\u7684\u804a\u5929\u8bb0\u5f55 (\u8f93\u5165) \u5e94\u8be5\u6709\u6548&#xff0c;\u9700\u9075\u5faa\u5bf9\u8bdd\u6a21\u5f0f\u539f\u5219&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"489\" src=\"2026-09-05icmzfznbkpz.png\" width=\"1348\" \/><\/p>\n<ul>\n<li>\u804a\u5929\u8bb0\u5f55\u4ee5 HumanMessage \u6216 SystemMessage \u5f00\u5934&#xff0c;\u540e\u8ddf HumanMessage\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e start_on&#061;&#034;human&#034; \u6765\u5b9e\u73b0\u3002<\/li>\n<li>\u804a\u5929\u8bb0\u5f55\u4ee5 HumanMessage \u6216 ToolMessage \u7ed3\u5c3e\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e ends_on&#061;(&#034;human&#034;, &#034;tool&#034;) \u6765\u5b9e\u73b0\u3002<\/li>\n<li>ToolMessage \u53ea\u80fd\u51fa\u73b0\u5728\u6d89\u53ca\u5de5\u5177\u8c03\u7528\u7684 AIMessage \u4e4b\u540e\u3002\u5982\u679c\u539f\u59cb\u804a\u5929\u5386\u53f2\u8bb0\u5f55\u4e2d\u5b58\u5728 SystemMessage&#xff0c;\u5219\u65b0\u804a\u5929\u5386\u53f2\u8bb0\u5f55\u5e94\u5305\u62ec SystemMessage&#xff0c;\u56e0\u4e3a SystemMessage \u5305\u542b\u5bf9\u804a\u5929\u6a21\u578b\u7684\u7279\u6b8a\u8bf4\u660e\u3002SystemMessage \u603b\u662f\u5386\u53f2\u8bb0\u5f55\u4e2d\u7684\u7b2c\u4e00\u6761\u6d88\u606f (\u5982\u679c\u5b58\u5728)\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e include_system&#061;True\u3002<\/li>\n<\/ul>\n<h4 id=\"%E5%9F%BA%E4%BA%8E%E6%B6%88%E6%81%AF%E6%95%B0%E7%9A%84%E4%BF%AE%E5%89%AA\">\u57fa\u4e8e\u6d88\u606f\u6570\u7684\u4fee\u526a<\/h4>\n<p>\u9664\u4e86\u57fa\u4e8e token \u7684\u4fee\u526a&#xff0c;\u8fd8\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e token_counter&#061;len \u6839\u636e\u6d88\u606f\u6570\u4fee\u526a\u804a\u5929\u8bb0\u5f55\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b&#xff0c;max_tokens \u5c06\u63a7\u5236\u6700\u5927\u6d88\u606f\u6570\u3002\u793a\u4f8b\u5982\u4e0b&#xff1a;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"1032\" src=\"2026-09-054tsygstir3o.png\" width=\"1156\" \/><\/p>\n<ul>\n<li><span style=\"color:#fe2c24\">max_tokens&#061;11&#xff1a;\u6700\u5927\u6d88\u606f\u6570&#xff0c;\u6ce8\u610f\u8fd9\u91cc\u4e0d\u662f token \u6570\u91cf&#xff0c;\u5f53 token_counter&#061;len \u5f00\u542f\u6309\u6d88\u606f\u6761\u6570\u88c1\u526a\u65f6&#xff0c;\u8be5\u53c2\u6570\u4ee3\u8868\u6700\u591a\u4fdd\u7559\u591a\u5c11\u6761\u6d88\u606f\u3002<\/span><\/li>\n<li>strategy&#061;&#034;last&#034;&#xff1a;\u4fee\u526a\u7b56\u7565\n<ul>\n<li>&#034;last&#034; (\u9ed8\u8ba4) &#xff1a;\u4fdd\u7559\u6700\u540e\u7684\u6d88\u606f\u3002\u53ef\u83b7\u53d6\u6d88\u606f\u5217\u8868\u4e2d\u7684\u6700\u540e\u4e00\u4e2a max_tokens<\/li>\n<li>&#034;first&#034;&#xff1a;\u4fdd\u7559\u6700\u65e9\u7684\u6d88\u606f\u3002<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"color:#fe2c24\">token_counter&#061;len&#xff1a;\u6839\u636e\u6d88\u606f\u6570\u88c1\u526a&#xff0c;\u7528 Python \u5185\u7f6e len() \u7edf\u8ba1\u6d88\u606f\u5217\u8868\u957f\u5ea6&#xff0c;\u4e0d\u518d\u8c03\u7528\u5927\u6a21\u578b\u505a token \u8ba1\u6570\u3002<\/span><\/li>\n<li>include_system&#061;True&#xff1a;\u5982\u679c\u60f3\u59cb\u7ec8\u4fdd\u7559\u521d\u59cb\u7cfb\u7edf\u6d88\u606f&#xff0c;\u53ef\u4ee5\u6307\u5b9a<\/li>\n<li>include_system&#061;True&#xff0c;\u5f3a\u5236\u628a SystemMessage \u7b97\u8fdb\u4fdd\u7559\u5217\u8868\u3002<\/li>\n<li>allow_partial&#061;False&#xff1a;\u662f\u5426\u5141\u8bb8\u62c6\u5206\u6d88\u606f\u7684\u5185\u5bb9&#xff0c;False \u4ee3\u8868\u4e0d\u80fd\u628a\u5355\u6761\u6d88\u606f\u62c6\u5f00\u622a\u65ad&#xff0c;\u53ea\u80fd\u6574\u6761\u6d88\u606f\u4e22\u5f03\u3002<\/li>\n<li>start_on&#061;&#034;human&#034;&#xff1a;\u5982\u679c\u9700\u8981\u786e\u4fdd\u6211\u4eec\u7684\u7b2c\u4e00\u6761\u6d88\u606f&#xff08;\u4e0d\u5305\u62ec\u7cfb\u7edf\u6d88\u606f&#xff09;\u59cb\u7ec8\u662f\u7279\u5b9a\u7c7b\u578b&#xff0c;\u53ef\u4ee5\u6307\u5b9astart_on\u3002<\/li>\n<\/ul>\n<p>\u7ed3\u679c\u5982\u4e0b&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"338\" src=\"2026-09-051jttkmm0f25.png\" width=\"1092\" \/><\/p>\n<p>\u8fd0\u884c\u7ed3\u679c\u73b0\u8c61<\/p>\n<li>\u539f\u59cb\u603b\u6d88\u606f\u4e00\u5171 11 \u6761 (1 \u6761 System &#043; 10 \u6761\u5bf9\u8bdd)&#xff0c;max_tokens&#061;11\u3001include_system&#061;True&#xff0c;\u7cfb\u7edf\u6d88\u606f\u5f3a\u5236\u5360 1 \u6761\u914d\u989d&#xff0c;\u6240\u4ee5\u53ea\u820d\u5f03\u6700\u5f00\u5934\u4e00\u7ec4\u5bf9\u8bdd&#xff1a;<\/li>\n<li>HumanMessage(content&#061;&#034;hi! I&#039;m bob&#034;)\u3001AIMessage(content&#061;&#034;hi!&#034;) \u8fd9\u4e24\u6761\u88ab\u5220\u6389\u3002<\/li>\n<li>\u8f93\u51fa\u5217\u8868\u4fdd\u7559\u7cfb\u7edf\u6d88\u606f &#043; \u540e\u9762\u5269\u4f59 10 \u6761\u6d88\u606f&#xff0c;\u5408\u8ba1 11 \u6761&#xff0c;\u521a\u597d\u7b49\u4e8e max_tokens&#061;11 \u8bbe\u7f6e\u7684\u4e0a\u9650\u3002<\/li>\n<ul><\/ul>\n<p>\u533a\u5206\u4e24\u79cd\u6a21\u5f0f\u5173\u952e\u70b9&#xff1a;<\/p>\n<li>token_counter&#061;model&#xff1a;\u6309 token \u5b57\u7b26\u603b\u91cf\u88c1\u526a&#xff0c;max_tokens &#061; token \u4e0a\u9650<\/li>\n<li>token_counter&#061;len&#xff1a;\u6309\u6d88\u606f\u6761\u76ee\u6570\u91cf\u88c1\u526a&#xff0c;max_tokens &#061; \u6700\u591a\u4fdd\u7559\u6d88\u606f\u6761\u6570\u3002<\/li>\n<h3 id=\"%E6%B6%88%E6%81%AF%E8%BF%87%E6%BB%A4\">\u6d88\u606f\u8fc7\u6ee4<\/h3>\n<p>\u5728\u66f4\u590d\u6742\u7684\u573a\u666f\u4e0b&#xff0c;\u6211\u4eec\u53ef\u80fd\u4f1a\u4f7f\u7528\u6d88\u606f\u5217\u8868\u6765\u8ddf\u8e2a\u72b6\u6001&#xff0c;\u4f8b\u5982<span style=\"color:#fe2c24\">\u6211\u4eec\u53ef\u80fd\u53ea\u60f3\u5c06\u8fd9\u4e2a\u5b8c\u6574\u6d88\u606f\u5217\u8868\u7684\u5b50\u96c6\u4f20\u9012\u6a21\u578b\u8c03\u7528&#xff0c;\u800c\u4e0d\u662f\u6240\u6709\u7684\u5386\u53f2\u8bb0\u5f55\u3002<\/span><\/p>\n<p><span style=\"color:#fe2c24\">filter_messages \u65b9\u6cd5\u5219\u53ef\u4ee5\u8f7b\u677e\u5730\u6309\u7c7b\u578b\u3001ID \u6216\u540d\u79f0\u8fc7\u6ee4 message\u3002<\/span><\/p>\n<p>\u4e0b\u9762\u6f14\u793a\u76f8\u5173\u8fc7\u6ee4\u793a\u4f8b&#xff0c;\u9996\u5148\u51c6\u5907\u6d88\u606f\u5217\u8868&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"337\" src=\"2026-09-05lsbxgmdvzt4.png\" width=\"1022\" \/>\u4ee3\u7801\u8bb2\u89e3<\/p>\n<p>\u5bfc\u5165\u9700\u8981\u7684\u6d88\u606f\u7c7b\u4e0e filter_messages \u8fc7\u6ee4\u5de5\u5177&#xff1b;\u6784\u9020\u6d88\u606f\u5217\u8868&#xff0c;\u6bcf\u6761\u6d88\u606f\u8bbe\u7f6e id \u5c5e\u6027&#xff0c;\u540e\u7eed\u53ef\u4ee5\u4f9d\u636e id \u505a\u8fc7\u6ee4\u3002<\/p>\n<h4 id=\"%E6%8C%89%E7%B1%BB%E5%9E%8B%E8%BF%9B%E8%A1%8C%E7%AD%9B%E9%80%89\">\u6309\u7c7b\u578b\u8fdb\u884c\u7b5b\u9009<\/h4>\n<p>\u6211\u4eec\u53ef\u4ee5\u6309\u7c7b\u578b\u8fdb\u884c\u7b5b\u9009&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"342\" src=\"2026-09-05be4y0qic0ol.png\" width=\"1098\" \/><\/p>\n<p>\u4ee3\u7801\u8bb2\u89e3<\/p>\n<p><span style=\"color:#fe2c24\">include_types&#061;&#034;human&#034; \u53ea\u4fdd\u7559 HumanMessage \u7528\u6237\u6d88\u606f&#xff0c;\u8fc7\u6ee4\u6389\u7cfb\u7edf\u6d88\u606f\u548c AI \u56de\u590d\u6d88\u606f\u3002<\/span>\u6709\u4e24\u79cd\u8c03\u7528\u5f62\u5f0f&#xff1a;<\/p>\n<li>\u76f4\u63a5\u4f20\u5217\u8868&#xff1a;filter_messages(messages, include_types&#061;&#034;human&#034;)<\/li>\n<li>\u8fd4\u56de\u53ef\u8fd0\u884c\u5bf9\u8c61\u518d\u8c03\u7528 invoke \u4f20\u5165\u6d88\u606f&#xff1a;filter_messages(include_types&#061;&#034;human&#034;).invoke(messages)<\/li>\n<h4 id=\"%E6%8C%89%E7%B1%BB%E5%9E%8B%20%2B%20ID%20%E8%BF%9B%E8%A1%8C%E7%AD%9B%E9%80%89%EF%BC%9A\">\u6309\u7c7b\u578b &#043; ID \u8fdb\u884c\u7b5b\u9009&#xff1a;<\/h4>\n<p>\u4e5f\u53ef\u4ee5\u6309\u7c7b\u578b &#043; ID \u8fdb\u884c\u7b5b\u9009&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"309\" src=\"2026-09-05blviq3cdi4a.png\" width=\"1175\" \/>\u4ee3\u7801\u8bb2\u89e3<\/p>\n<ul>\n<li>include_types&#061;[HumanMessage, AIMessage]&#xff1a;\u4fdd\u7559\u7528\u6237\u6d88\u606f\u4e0e AI \u6d88\u606f&#xff0c;\u6392\u9664 SystemMessage \u7cfb\u7edf\u6d88\u606f\u3002<\/li>\n<li>exclude_ids&#061;[&#034;3&#034;]&#xff1a;\u628a id \u7b49\u4e8e&#034;3&#034;\u7684\u6d88\u606f\u5254\u9664&#xff0c;\u4e5f\u5c31\u662f id&#061;3 \u90a3\u4e00\u6761 AI \u6d88\u606f \u201c\u793a\u4f8b\u8f93\u51fa\u201d \u4f1a\u88ab\u8fc7\u6ee4\u6389&#xff0c;\u4e0d\u4f1a\u51fa\u73b0\u5728\u8fd4\u56de\u7ed3\u679c\u3002<\/li>\n<\/ul>\n<h3 id=\"%E6%B6%88%E6%81%AF%E5%90%88%E5%B9%B6\">\u6d88\u606f\u5408\u5e76<\/h3>\n<p>\u82e5\u6211\u4eec\u7684\u6d88\u606f\u5217\u8868\u5b58\u5728\u8fde\u7eed\u67d0\u79cd\u7c7b\u578b\u76f8\u540c\u7684\u6d88\u606f&#xff0c;\u4f46\u5b9e\u9645\u4e0a\u67d0\u4e9b\u6a21\u578b\u4e0d\u652f\u6301\u4f20\u9012\u76f8\u540c\u7c7b\u578b\u7684\u8fde\u7eed\u6d88\u606f\u3002\u56e0\u6b64\u5bf9\u4e8e\u8fd9\u79cd\u60c5\u51b5&#xff0c;<span style=\"color:#fe2c24\">\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 merge_message_runs \u65b9\u6cd5\u8f7b\u677e\u5408\u5e76\u76f8\u540c\u7c7b\u578b\u7684\u8fde\u7eed\u6d88\u606f\u3002<\/span><\/p>\n<p>\u793a\u4f8b\u5982\u4e0b&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"619\" src=\"2026-09-051rzcegxswud.png\" width=\"1073\" \/>\u4ee3\u7801\u8bb2\u89e3<\/p>\n<li>\u5bfc\u5165\u5927\u6a21\u578b\u7c7b\u4ee5\u53ca\u6d88\u606f\u7c7b\u578b\u3001\u6d88\u606f\u5408\u5e76\u5de5\u5177 merge_message_runs\u3002<\/li>\n<li>\u6784\u9020\u539f\u59cb\u6d88\u606f\u5217\u8868\u91cc\u9762\u5b58\u5728\u8fde\u7eed\u591a\u6761 SystemMessage\u3001\u8fde\u7eed\u591a\u6761 HumanMessage\u3001\u8fde\u7eed\u591a\u6761 AIMessage&#xff0c;\u8fd9\u5c31\u662f\u5f85\u5408\u5e76\u7684\u539f\u59cb\u6570\u636e\u3002<\/li>\n<li><span style=\"color:#fe2c24\">\u8c03\u7528 merge_message_runs(messages) \u6267\u884c\u5408\u5e76&#xff0c;\u628a\u8fde\u7eed\u540c\u7c7b\u578b\u6d88\u606f\u5408\u5e76\u6210\u4e3a\u5355\u6761\u6d88\u606f\u3002<\/span><\/li>\n<li>repr(x) 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src=\"2026-09-05ypxp3bcysod.png\" width=\"711\" \/>\u4ee3\u7801\u8bb2\u89e3<\/p>\n<li>\u65b9\u5f0f\u4e00&#xff1a;\u5148\u624b\u52a8\u8c03\u7528 merge_message_runs \u5b8c\u6210\u6d88\u606f\u5408\u5e76&#xff0c;\u4e4b\u540e\u518d\u8c03\u7528\u6a21\u578b\u6267\u884c\u3002<\/li>\n<li>\u65b9\u5f0f\u4e8c&#xff1a;\u4f7f\u7528 LangChain \u7684\u7ba1\u9053 | \u8fd0\u7b97\u7b26&#xff0c;<span style=\"color:#fe2c24\">\u5c06\u6d88\u606f\u5408\u5e76\u5668\u548c\u6a21\u578b\u62fc\u63a5\u6210\u94fe\u3002merger \u4e0d\u9700\u8981\u4f20\u5165\u6d88\u606f&#xff0c;\u5728\u94fe\u6267\u884c chain.invoke(messages) \u7684\u65f6\u5019\u81ea\u52a8\u4f20\u5165\u6d88\u606f\u505a\u5408\u5e76&#xff0c;\u4e4b\u540e\u9001\u5165\u5927\u6a21\u578b\u3002<\/span>.pretty_print() 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\/>\n\u56db\u3001\u7ba1\u7406\u5386\u53f2\u6d88\u606f<br \/>\n\u524d\u7f6e\u6982\u5ff5<br \/>\n\u4e0a\u4e0b\u6587\u7a97\u53e3<br \/>\nToken<br \/>\n\u6d88\u606f\u88c1\u526a<br \/>\n\u57fa\u4e8e\u8f93\u5165 Token \u6570\u7684\u4fee\u526a<br \/>\n\u57fa\u4e8e\u6d88\u606f\u6570\u7684\u4fee\u526a<br \/>\n\u6d88\u606f\u8fc7\u6ee4<br \/>\n\u6309\u7c7b\u578b\u8fdb\u884c\u7b5b\u9009<br \/>\n\u6309\u7c7b\u578b  ID \u8fdb\u884c\u7b5b\u9009&amp;<\/p>\n","protected":false},"author":2,"featured_media":100968,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[997],"topic":[],"class_list":["post-100988","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-langchain"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>LangChain 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