{"id":84454,"date":"2026-07-26T13:09:24","date_gmt":"2026-07-26T05:09:24","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/84454.html"},"modified":"2026-07-26T13:09:24","modified_gmt":"2026-07-26T05:09:24","slug":"fastmcp%e8%ae%be%e8%ae%a1%e3%80%81%e5%8e%9f%e7%90%86%e4%b8%8e%e5%ba%94%e7%94%a8-17%e4%bb%8e%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%90%91%e5%ae%a2%e6%88%b7%e7%ab%af%e7%9a%84%e5%8f%8d%e5%90%91%e9%80%9a","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/84454.html","title":{"rendered":"[FastMCP\u8bbe\u8ba1\u3001\u539f\u7406\u4e0e\u5e94\u7528-17]\u4ece\u670d\u52a1\u5668\u5411\u5ba2\u6237\u7aef\u7684\u53cd\u5411\u901a\u77e5"},"content":{"rendered":"<p>\u4ece\u901a\u4fe1\u6216\u8005\u6d88\u606f\u4ea4\u6362\u6a21\u5f0f\u6765\u770b&#xff0c;\u524d\u9762\u6d89\u53ca\u7684\u90fd\u662f\u4ece\u5ba2\u6237\u7aef\u53d1\u9001\u8bf7\u6c42\u5230\u670d\u52a1\u5668\u5e76\u5f97\u5230\u5bf9\u5e94\u7684\u54cd\u5e94&#xff0c;\u8fd9\u662f\u5178\u578b\u7684\u4ece\u5ba2\u6237\u7aef\u5230\u670d\u52a1\u5668\u7684\u8bf7\u6c42\/\u54cd\u5e94\u6a21\u5f0f&#xff0c;\u63a5\u4e0b\u6765\u6211\u4eec\u4ecb\u7ecd\u4e24\u79cd\u4ece\u670d\u52a1\u5668\u5411\u5ba2\u6237\u7aef\u7684\u53cd\u5411\u901a\u4fe1\u6a21\u5f0f&#xff1a;<\/p>\n<ul>\n<li>\u901a\u77e5&#xff1a;\u670d\u52a1\u7aef\u53d1\u9001\u5355\u5411\u901a\u77e5\u7ed9\u5ba2\u6237\u7aef,\u5ba2\u6237\u7aef\u4e0d\u9700\u8981\u56de\u590d\u3002\u6bd4\u8f83\u5178\u578b\u5c31\u662f\u8fdb\u5ea6\u62a5\u544a\u548c\u65e5\u5fd7\u56de\u4f20&#xff0c;\u8fd9\u4e5f\u662f\u672c\u7bc7\u6587\u7ae0\u7740\u91cd\u4ecb\u7ecd\u7684\u5185\u5bb9&#xff1b;<\/li>\n<li>\u8bf7\u6c42&#xff1a;\u670d\u52a1\u7aef\u53d1\u9001\u8bf7\u6c42\u5230\u5ba2\u6237\u7aef&#xff0c;\u5e76\u5f97\u5230\u5bf9\u65b9\u7684\u54cd\u5e94\u3002\u6bd4\u8f83\u5178\u578b\u7684\u5c31\u662f\u4fe1\u606f\u5f81\u8be2&#xff08;Elicitation&#xff09;\u548c\u5ba2\u6237\u7aef\u91c7\u6837&#xff08;Client Sampling&#xff09;\u3002<\/li>\n<\/ul>\n<h3>1. \u8fdb\u5ea6\u62a5\u544a<\/h3>\n<p>\u5982\u679c\u5ba2\u6237\u7aef\u8c03\u7528\u7684\u5de5\u5177\u6d89\u53ca\u4ee5\u957f\u8017\u65f6\u7684\u64cd\u4f5c&#xff0c;\u670d\u52a1\u7aef\u53ef\u7528\u901a\u8fc7\u5411\u5ba2\u6237\u7aef\u5b9e\u65f6\u62a5\u544a\u5de5\u4f5c\u8fdb\u5ea6\u7684\u65b9\u5f0f\u6765\u63d0\u9ad8\u7528\u6237\u4f53\u9a8c\u3002\u8fdb\u5ea6\u62a5\u544a\u901a\u8fc7Context\u5982\u4e0b\u8fd9\u4e2areport_progress\u65b9\u6cd5\u6765\u5b8c\u6210&#xff0c;\u53c2\u6570progress\u548ctotal\u901a\u8fc7\u6570\u503c\u7684\u5f62\u5f0f\u6307\u5b9a\u5b8c\u6210\u5de5\u4f5c\u91cf\u548c\u603b\u4f53\u5de5\u4f5c\u91cf\u3002<\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;dataclass<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Context<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">report_progress<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> progress<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">float<\/span><span class=\"token punctuation\">,<\/span> total<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">float<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">,<\/span> message<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u521b\u5efaClient\u5bf9\u8c61\u6216\u8005\u5229\u7528\u5b83\u8c03\u7528\u5de5\u5177\u7684\u65f6\u5019\u6307\u5b9a\u4e00\u4e2aProgressHandler\u6765\u63a5\u6536\u8fdb\u5ea6\u901a\u77e5\u3002ProgressHandler\u8fd9\u4e2a\u53ef\u6267\u884c\u5bf9\u8c61\u7b7e\u540d\u5982\u4e0b&#xff1a;<\/p>\n<p>ProgressHandler<span class=\"token punctuation\">:<\/span> TypeAlias <span class=\"token operator\">&#061;<\/span> ProgressFnT<br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ProgressFnT<\/span><span class=\"token punctuation\">(<\/span>Protocol<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">__call__<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        self<span class=\"token punctuation\">,<\/span> progress<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">float<\/span><span class=\"token punctuation\">,<\/span> total<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">float<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">,<\/span> message<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span> <\/p>\n<p>\u5728\u5982\u4e0b\u8fd9\u4e2a\u6f14\u793a\u7a0b\u5e8f\u4e2d&#xff0c;\u5ba2\u6237\u7aef\u8c03\u7528\u5de5\u5177long_running_task\u6a21\u62df\u4e00\u4e2a\u957f\u8017\u65f6\u64cd\u4f5c&#xff0c;\u6211\u4eec\u5c06\u6574\u4e2a\u5de5\u4f5c\u5212\u5206\u4e3a5\u4e2a\u6b65\u9aa4&#xff0c;\u6bcf\u4e2a\u6b65\u9aa4\u5b8c\u6210\u540e\u8c03\u7528Context\u7684report_progress\u62a5\u544a\u4e00\u6b21\u8fdb\u5ea6\u3002<\/p>\n<p><span class=\"token keyword\">from<\/span> fastmcp <span class=\"token keyword\">import<\/span> FastMCP<br \/>\n<span class=\"token keyword\">from<\/span> fastmcp<span class=\"token punctuation\">.<\/span>server <span class=\"token keyword\">import<\/span> Context<br \/>\n<span class=\"token keyword\">from<\/span> fastmcp<span class=\"token punctuation\">.<\/span>client <span class=\"token keyword\">import<\/span> Client<br \/>\n<span class=\"token keyword\">import<\/span> asyncio<\/p>\n<p>server <span class=\"token operator\">&#061;<\/span> FastMCP<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Server&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;server<span class=\"token punctuation\">.<\/span>tool<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">long_running_task<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    context<span class=\"token punctuation\">:<\/span> Context<span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">int<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> i <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">6<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> context<span class=\"token punctuation\">.<\/span>report_progress<span class=\"token punctuation\">(<\/span>progress<span class=\"token operator\">&#061;<\/span>i<span class=\"token punctuation\">,<\/span> total<span class=\"token operator\">&#061;<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> message<span class=\"token operator\">&#061;<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;Step <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>i<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> completed&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> asyncio<span class=\"token punctuation\">.<\/span>sleep<span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token number\">5<\/span><\/p>\n<p><span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">handle_progress<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    progress<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">float<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    total<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">float<\/span><span class=\"token operator\">|<\/span><span class=\"token boolean\">None<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    message<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token operator\">|<\/span><span class=\"token boolean\">None<\/span><br \/>\n<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    percentage <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>progress <span class=\"token operator\">\/<\/span> <span class=\"token punctuation\">(<\/span>total <span class=\"token keyword\">or<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">100<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;Progress: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>percentage<span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.1f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">% &#8211; <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>message <span class=\"token keyword\">or<\/span> <span class=\"token string\">&#039;&#039;<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">with<\/span> Client<span class=\"token punctuation\">(<\/span>server<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">as<\/span> client<span class=\"token punctuation\">:<\/span><br \/>\n        result <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> client<span class=\"token punctuation\">.<\/span>call_tool<span class=\"token punctuation\">(<\/span><br \/>\n            name<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;long_running_task&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            progress_handler<span class=\"token operator\">&#061;<\/span> handle_progress<br \/>\n        <span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">assert<\/span> result<span class=\"token punctuation\">.<\/span>content<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>text <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#034;5&#034;<\/span> <span class=\"token comment\"># type: ignore        <\/span><\/p>\n<p>asyncio<span class=\"token punctuation\">.<\/span>run<span class=\"token punctuation\">(<\/span>main<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u6211\u4eec\u5b9a\u4e49\u4e86handle_progress\u51fd\u6570\u4f5c\u4e3a\u63a5\u6536\u8fdb\u5ea6\u901a\u77e5\u3002\u5728\u5229\u7528Client\u8c03\u7528\u5de5\u5177long_running_task\u65f6&#xff0c;\u6211\u4eec\u5c06\u8fd9\u4e2a\u51fd\u6570\u4f5c\u4e3aprogress_handler\u53c2\u6570\u3002\u7a0b\u5e8f\u8fd0\u884c\u540e&#xff0c;\u5ba2\u6237\u7aef\u7aef\u63a5\u6536\u5230\u7684\u8fdb\u5ea6\u4f1a\u5b9e\u65f6\u6253\u5370\u51fa\u6765&#xff1a;<\/p>\n<p>Progress: 20.0% &#8211; Step 1 completed<br \/>\nProgress: 40.0% &#8211; Step 2 completed<br \/>\nProgress: 60.0% &#8211; Step 3 completed<br \/>\nProgress: 80.0% &#8211; Step 4 completed<br \/>\nProgress: 100.0% &#8211; Step 5 completed<\/p>\n<h3>2. \u65e5\u5fd7\u56de\u4f20<\/h3>\n<p>\u5982\u679c\u5de5\u5177\u6267\u884c\u8fc7\u7a0b\u4e2d\u5229\u7528Context\u5982\u4e0b\u8fd9\u51e0\u4e2a\u65b9\u6cd5\u8bb0\u5f55\u4e0d\u540c\u7b49\u7ea7\u7684\u65e5\u5fd7&#xff0c;\u8fd9\u4e9b\u65e5\u5fd7\u4f1a\u81ea\u52a8\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u3002<\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;dataclass<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Context<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">debug<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        self<span class=\"token punctuation\">,<\/span><br \/>\n        message<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        logger_name<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        extra<span class=\"token punctuation\">:<\/span> Mapping<span class=\"token punctuation\">[<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span> Any<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><\/p>\n<p>    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">info<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        self<span class=\"token punctuation\">,<\/span><br \/>\n        message<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        logger_name<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        extra<span class=\"token punctuation\">:<\/span> Mapping<span class=\"token punctuation\">[<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span> Any<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><\/p>\n<p>    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">warning<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        self<span class=\"token punctuation\">,<\/span><br \/>\n        message<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        logger_name<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        extra<span class=\"token punctuation\">:<\/span> Mapping<span class=\"token punctuation\">[<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span> Any<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><\/p>\n<p>    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">error<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        self<span class=\"token punctuation\">,<\/span><br \/>\n        message<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        logger_name<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        extra<span class=\"token punctuation\">:<\/span> Mapping<span class=\"token punctuation\">[<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span> Any<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><\/p>\n<p>\u5ba2\u6237\u7aef\u53ef\u4ee5\u5728\u521b\u5efaClient\u5bf9\u8c61\u65f6\u4e3a\u5176\u6307\u5b9a\u4e00\u4e2aLogHandler\u6765\u5904\u7406\u63a5\u6536\u7684\u65e5\u5fd7&#xff0c;LogHandler\u5bf9\u5e94\u53ef\u6267\u884c\u5bf9\u8c61\u7b7e\u540d\u548c\u4f5c\u4e3a\u53c2\u6570\u7684LogMessage\u7c7b\u578b\u5b9a\u4e49\u5982\u4e0b\u3002<\/p>\n<p>LogMessage<span class=\"token punctuation\">:<\/span> TypeAlias <span class=\"token operator\">&#061;<\/span> LoggingMessageNotificationParams<br \/>\nLogHandler<span class=\"token punctuation\">:<\/span> TypeAlias <span class=\"token operator\">&#061;<\/span> Callable<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">[<\/span>LogMessage<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> Awaitable<span class=\"token punctuation\">[<\/span><span class=\"token boolean\">None<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">LoggingMessageNotificationParams<\/span><span class=\"token punctuation\">(<\/span>NotificationParams<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    level<span class=\"token punctuation\">:<\/span> LoggingLevel<br \/>\n    logger<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><br \/>\n    data<span class=\"token punctuation\">:<\/span> Any<br \/>\n    model_config <span class=\"token operator\">&#061;<\/span> ConfigDict<span class=\"token punctuation\">(<\/span>extra<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;allow&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">NotificationParams<\/span><span class=\"token punctuation\">(<\/span>BaseModel<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Meta<\/span><span class=\"token punctuation\">(<\/span>BaseModel<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        model_config <span class=\"token operator\">&#061;<\/span> ConfigDict<span class=\"token punctuation\">(<\/span>extra<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;allow&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    meta<span class=\"token punctuation\">:<\/span> Meta <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> Field<span class=\"token punctuation\">(<\/span>alias<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;_meta&#034;<\/span><span class=\"token punctuation\">,<\/span> default<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">None<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u503c\u5f97\u4e00\u63d0\u7684&#xff0c;LogHandler\u80fd\u591f\u5f97\u5230\u67d0\u6761\u65e5\u5fd7\u53d6\u51b3\u4e8eClient\u901a\u8fc7set_logging_level\u65b9\u6cd5\u8bbe\u7f6e\u7684\u6700\u4f4e\u65e5\u5fd7\u7b49\u7ea7&#xff0c;\u5b83\u53ea\u80fd\u770b\u5230\u7b49\u7ea7\u4e0d\u4f4e\u4e8e\u8fd9\u4e2a\u8bbe\u5b9a\u7b49\u7ea7\u7684\u65e5\u5fd7\u3002<\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Client<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">set_logging_level<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> level<span class=\"token punctuation\">:<\/span> mcp<span class=\"token punctuation\">.<\/span>types<span class=\"token punctuation\">.<\/span>LoggingLevel<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><br \/>\nLoggingLevel <span class=\"token operator\">&#061;<\/span> Literal<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;debug&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;info&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;notice&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;warning&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;error&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;critical&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;alert&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;emergency&#034;<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p>\u6211\u4eec\u6309\u7167\u5982\u4e0b\u7684\u65b9\u5f0f\u5c06\u4e0a\u9762\u6f14\u793a\u5b9e\u4f8b\u901a\u8fc7\u8fdb\u5ea6\u62a5\u544a\u7684\u901a\u77e5\u5f62\u5f0f\u66ff\u6362\u6210\u4e86\u65e5\u5fd7\u5f62\u5f0f\u3002<\/p>\n<p><span class=\"token keyword\">from<\/span> fastmcp <span class=\"token keyword\">import<\/span> FastMCP<br \/>\n<span class=\"token keyword\">from<\/span> fastmcp<span class=\"token punctuation\">.<\/span>server <span class=\"token keyword\">import<\/span> Context<br \/>\n<span class=\"token keyword\">from<\/span> fastmcp<span class=\"token punctuation\">.<\/span>client <span class=\"token keyword\">import<\/span> Client<br \/>\n<span class=\"token keyword\">from<\/span> fastmcp<span class=\"token punctuation\">.<\/span>client<span class=\"token punctuation\">.<\/span>logging <span class=\"token keyword\">import<\/span> LogMessage<br \/>\n<span class=\"token keyword\">import<\/span> asyncio<\/p>\n<p>server <span class=\"token operator\">&#061;<\/span> FastMCP<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Server&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;server<span class=\"token punctuation\">.<\/span>tool<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">long_running_task<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    context<span class=\"token punctuation\">:<\/span> Context<span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">int<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> i <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">6<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> context<span class=\"token punctuation\">.<\/span>info <span class=\"token punctuation\">(<\/span>message<span class=\"token operator\">&#061;<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;Step <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>i<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> completed&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> asyncio<span class=\"token punctuation\">.<\/span>sleep<span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token number\">5<\/span><\/p>\n<p>log <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">handle_log<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    log_message<span class=\"token punctuation\">:<\/span> LogMessage<br \/>\n<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    log<span class=\"token punctuation\">.<\/span>append<span class=\"token punctuation\">(<\/span>log_message<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">with<\/span> Client<span class=\"token punctuation\">(<\/span>server<span class=\"token punctuation\">,<\/span> log_handler<span class=\"token operator\">&#061;<\/span>handle_log<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">as<\/span> client<span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> client<span class=\"token punctuation\">.<\/span>set_logging_level<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;emergency&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        result <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> client<span class=\"token punctuation\">.<\/span>call_tool<span class=\"token punctuation\">(<\/span><br \/>\n            name<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;long_running_task&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">assert<\/span> result<span class=\"token punctuation\">.<\/span>content<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>text <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#034;5&#034;<\/span> <span class=\"token comment\"># type: ignore<\/span><br \/>\n        <span class=\"token keyword\">assert<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>log<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">5<\/span><br \/>\n        <span class=\"token keyword\">assert<\/span> <span class=\"token builtin\">all<\/span><span class=\"token punctuation\">(<\/span>log_message<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#034;info&#034;<\/span> <span class=\"token keyword\">for<\/span> log_message <span class=\"token keyword\">in<\/span> log<span class=\"token punctuation\">)<\/span> <\/p>\n<p>asyncio<span class=\"token punctuation\">.<\/span>run<span class=\"token punctuation\">(<\/span>main<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>    <\/p>\n<h3>3. \u53d1\u9001\u901a\u77e5<\/h3>\n<p>\u5305\u62ec\u4e0a\u9762\u4ecb\u7ecd\u7684\u8fdb\u5ea6\u548c\u65e5\u5fd7&#xff0c;\u4ee5\u53ca\u5176\u4ed6\u76f8\u5173\u7684\u901a\u77e5\u53ef\u4ee5\u76f4\u63a5\u901a\u8fc7\u8c03\u7528Context\u7684send_notification\u65b9\u6cd5\u6765\u5b8c\u6210\u3002\u53c2\u6570notification\u7684\u7c7b\u578bServerNotificationType\u662f\u5bf9\u591a\u4e2a\u901a\u77e5\u7c7b\u578b\u7684\u8054\u5408&#xff0c;\u5b83\u4eec\u90fd\u662fNotification\u7684\u5b50\u7c7b\u3002\u4f17\u591a\u901a\u77e5\u7c7b\u578b\u7531mcp\u5e93\u63d0\u4f9b&#xff08;\u6a21\u5757\u8def\u5f84\u4e3amcp.types&#xff09;&#xff0c;\u662f\u5bf9MCP\u89c4\u8303\u7684\u5b9e\u73b0\u3002\u7531\u4e8eMCP\u91c7\u7528JSON-RPC\u534f\u8bae&#xff0c;\u6240\u4ee5Notification\u5206\u522b\u5229\u7528\u5176method\u548cparams\u5b57\u6bb5\u8868\u793aJSON-RPC\u7684\u65b9\u6cd5\u548c\u53c2\u6570&#xff0c;\u540e\u8005\u7684\u57fa\u7c7b\u4e3aNotificationParams&#xff0c;\u5177\u6709\u4e00\u4e2a\u8868\u793a\u5143\u6570\u636e\u7684meta\u5b57\u6bb5\u3002<\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;dataclass<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Context<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">send_notification<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        self<span class=\"token punctuation\">,<\/span> notification<span class=\"token punctuation\">:<\/span> mcp<span class=\"token punctuation\">.<\/span>types<span class=\"token punctuation\">.<\/span>ServerNotificationType<br \/>\n    <span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><br \/>\nServerNotificationType<span class=\"token punctuation\">:<\/span> TypeAlias <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><br \/>\n    CancelledNotification<br \/>\n    <span class=\"token operator\">|<\/span> ProgressNotification<br \/>\n    <span class=\"token operator\">|<\/span> LoggingMessageNotification<br \/>\n    <span class=\"token operator\">|<\/span> ResourceUpdatedNotification<br \/>\n    <span class=\"token operator\">|<\/span> ResourceListChangedNotification<br \/>\n    <span class=\"token operator\">|<\/span> ToolListChangedNotification<br \/>\n    <span class=\"token operator\">|<\/span> PromptListChangedNotification<br \/>\n    <span class=\"token operator\">|<\/span> ElicitCompleteNotification<br \/>\n    <span class=\"token operator\">|<\/span> TaskStatusNotification<br \/>\n<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Notification<\/span><span class=\"token punctuation\">(<\/span>BaseModel<span class=\"token punctuation\">,<\/span> Generic<span class=\"token punctuation\">[<\/span>NotificationParamsT<span class=\"token punctuation\">,<\/span> MethodT<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    method<span class=\"token punctuation\">:<\/span> MethodT<br \/>\n    params<span class=\"token punctuation\">:<\/span> NotificationParamsT<br \/>\n    model_config <span class=\"token operator\">&#061;<\/span> ConfigDict<span class=\"token punctuation\">(<\/span>extra<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;allow&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">NotificationParams<\/span><span class=\"token punctuation\">(<\/span>BaseModel<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Meta<\/span><span class=\"token punctuation\">(<\/span>BaseModel<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        model_config <span class=\"token operator\">&#061;<\/span> ConfigDict<span class=\"token punctuation\">(<\/span>extra<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;allow&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    meta<span class=\"token punctuation\">:<\/span> Meta <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> Field<span class=\"token punctuation\">(<\/span>alias<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;_meta&#034;<\/span><span class=\"token punctuation\">,<\/span> default<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">None<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>RequestParamsT <span class=\"token operator\">&#061;<\/span> TypeVar<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;RequestParamsT&#034;<\/span><span class=\"token punctuation\">,<\/span> bound<span class=\"token operator\">&#061;<\/span>RequestParams <span class=\"token operator\">|<\/span> <span class=\"token builtin\">dict<\/span><span class=\"token punctuation\">[<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span> Any<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">)<\/span><br \/>\nNotificationParamsT <span class=\"token operator\">&#061;<\/span> TypeVar<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;NotificationParamsT&#034;<\/span><span class=\"token punctuation\">,<\/span> bound<span class=\"token operator\">&#061;<\/span>NotificationParams <span class=\"token operator\">|<\/span> <span class=\"token builtin\">dict<\/span><span class=\"token punctuation\">[<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span> Any<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">)<\/span><br \/>\nMethodT <span class=\"token operator\">&#061;<\/span> TypeVar<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;MethodT&#034;<\/span><span class=\"token punctuation\">,<\/span> bound<span class=\"token operator\">&#061;<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span>   <\/p>\n<p>\u63a5\u4e0b\u6765\u6211\u4eec\u5bf9\u5404\u79cd\u901a\u77e5\u7c7b\u578b\u548c\u5bf9\u5e94\u7684JSON-RPC\u65b9\u6cd5\u8fdb\u884c\u6982\u62ec\u6027\u4ecb\u7ecd&#xff1a;<\/p>\n<ul>\n<li>CancelledNotification&#xff08;notifications\/cancelled&#xff09;&#xff1a;\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u5411\u5bf9\u65b9\u53d1\u9001\u7684\u53d6\u6d88\u4e4b\u524d\u8bf7\u6c42\u7684\u901a\u77e5&#xff1b;<\/li>\n<li>ProgressNotification&#xff08;notifications\/progress&#xff09;&#xff1a;\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u5411\u5bf9\u65b9\u53d1\u9001\u7684\u8fdb\u5ea6\u62a5\u544a&#xff1b;<\/li>\n<li>LoggingMessageNotification&#xff08;notifications\/message&#xff09;&#xff1a;\u670d\u52a1\u7aef\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u65e5\u5fd7&#xff1b;<\/li>\n<li>ResourceUpdatedNotification&#xff08;notifications\/resources\/updated&#xff09;&#xff1a;\u670d\u52a1\u7aef\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u5173\u4e8e\u8d44\u6e90\u88ab\u66f4\u65b0\u7684\u901a\u77e5&#xff1b;<\/li>\n<li>ResourceListChangedNotification(notifications\/resources\/list_changed)&#xff1a;\u670d\u52a1\u7aef\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u5173\u4e8e\u8d44\u6e90\u5217\u8868\u53d1\u751f\u6539\u53d8\u7684\u901a\u77e5&#xff1b;<\/li>\n<li>ToolListChangedNotification&#xff08;notifications\/tools\/list_changed&#xff09;&#xff1a;\u670d\u52a1\u7aef\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u5173\u4e8e\u5de5\u5177\u5217\u8868\u53d1\u751f\u6539\u53d8\u7684\u901a\u77e5&#xff1b;<\/li>\n<li>PromptListChangedNotification&#xff08;notifications\/prompts\/list_changed&#xff09;&#xff1a;\u670d\u52a1\u7aef\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u5173\u4e8e\u63d0\u793a\u8bcd\u5217\u8868\u53d1\u751f\u6539\u53d8\u7684\u901a\u77e5&#xff1b;<\/li>\n<li>ElicitCompleteNotification&#xff08;notifications\/elicitation\/complete&#xff09;&#xff1a;\u670d\u52a1\u5668\u53d1\u7ed9\u5ba2\u6237\u7aef\u7684\u5f02\u6b65\u201c\u901a\u5173\u4fe1\u53f7\u201d&#xff0c;\u544a\u77e5\u4e4b\u524d\u56e0\u6743\u9650\u6216\u914d\u7f6e\u53d7\u9650\u7684URL\u8bbf\u95ee\u5df2\u5904\u7406\u5b8c\u6210;<\/li>\n<li>TaskStatusNotification(notifications\/tasks\/status)&#xff1a;\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u5411\u5bf9\u65b9\u53d1\u9001\u7684\u5173\u4e8e\u4efb\u52a1\u72b6\u6001\u6539\u53d8\u7684\u901a\u77e5\u3002<\/li>\n<\/ul>\n<p>\u5ba2\u6237\u7aef\u53ef\u4ee5\u5728\u521b\u5efaClient\u7684\u65f6\u5019\u521b\u5efa\u4e00\u4e2aMessageHandlerT\u5bf9\u8c61\u4f5c\u4e3a\u5176message_handler\u53c2\u6570\u6765\u5904\u7406\u63a5\u6536\u5230\u7684\u901a\u77e5\u3002MessageHandlerT\u8fd9\u4e2a\u53ef\u6267\u884c\u5bf9\u8c61\u7684\u7b7e\u540d\u5b9a\u4e49\u5982\u4e0b&#xff0c;\u5b83\u7684\u53c2\u6570\u901a\u5e38\u4e3a\u4e00\u4e2amcp.types.ServerNotification\u5bf9\u8c61&#xff0c;\u53ef\u4ee5\u901a\u8fc7\u540e\u8005\u7684root\u5b57\u5178\u5f97\u5230\u4e0a\u8ff0\u8fd9\u4e9b\u4e2a\u901a\u77e5\u5bf9\u8c61\u3002<\/p>\n<p>MessageHandlerT<span class=\"token punctuation\">:<\/span> TypeAlias <span class=\"token operator\">&#061;<\/span> MessageHandlerFnT<br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MessageHandlerFnT<\/span><span class=\"token punctuation\">(<\/span>Protocol<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">__call__<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        self<span class=\"token punctuation\">,<\/span><br \/>\n        message<span class=\"token punctuation\">:<\/span> RequestResponder<span class=\"token punctuation\">[<\/span>types<span class=\"token punctuation\">.<\/span>ServerRequest<span class=\"token punctuation\">,<\/span> types<span class=\"token punctuation\">.<\/span>ClientResult<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">|<\/span> types<span class=\"token punctuation\">.<\/span>ServerNotification <span class=\"token operator\">|<\/span> Exception<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ServerNotification<\/span><span class=\"token punctuation\">(<\/span>RootModel<span class=\"token punctuation\">[<\/span>ServerNotificationType<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">pass<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">RootModel<\/span><span class=\"token punctuation\">(<\/span>BaseModel<span class=\"token punctuation\">,<\/span> Generic<span class=\"token punctuation\">[<\/span>RootModelRootType<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> metaclass<span class=\"token operator\">&#061;<\/span>_RootModelMetaclass<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    root<span class=\"token punctuation\">:<\/span> RootModelRootType<\/p>\n<p>\u4e0b\u9762\u7684\u7a0b\u5e8f\u6f14\u793a\u4e86\u5728\u4e00\u4e2a\u5de5\u5177\u51fd\u6570\u4e2d\u5229\u7528\u6ce8\u5165\u7684Context\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u56db\u79cd\u7c7b\u578b\u7684\u901a\u77e5&#xff0c;\u4ee5\u53ca\u5ba2\u6237\u7aef\u5229\u7528\u6ce8\u518c\u7684MessageHandler\u6765\u5904\u7406\u8fd9\u4e9b\u901a\u77e5\u3002<\/p>\n<p><span class=\"token keyword\">from<\/span> fastmcp <span class=\"token keyword\">import<\/span> FastMCP<br \/>\n<span class=\"token keyword\">from<\/span> fastmcp<span class=\"token punctuation\">.<\/span>server <span class=\"token keyword\">import<\/span> Context<br \/>\n<span class=\"token keyword\">from<\/span> fastmcp<span class=\"token punctuation\">.<\/span>client <span class=\"token keyword\">import<\/span> Client<br \/>\n<span class=\"token keyword\">from<\/span> pydantic <span class=\"token keyword\">import<\/span> AnyUrl<br \/>\n<span class=\"token keyword\">from<\/span> mcp<span class=\"token punctuation\">.<\/span>types <span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">(<\/span><br \/>\n    ServerNotification<span class=\"token punctuation\">,<\/span><br \/>\n    ServerRequest<span class=\"token punctuation\">,<\/span><br \/>\n    ClientResult<span class=\"token punctuation\">,<\/span><br \/>\n    ResourceUpdatedNotification<span class=\"token punctuation\">,<\/span><br \/>\n    ResourceListChangedNotification<span class=\"token punctuation\">,<\/span><br \/>\n    ToolListChangedNotification<span class=\"token punctuation\">,<\/span><br \/>\n    PromptListChangedNotification<span class=\"token punctuation\">,<\/span><br \/>\n    ResourceUpdatedNotificationParams<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">from<\/span> mcp<span class=\"token punctuation\">.<\/span>shared<span class=\"token punctuation\">.<\/span>session <span class=\"token keyword\">import<\/span> RequestResponder<br \/>\n<span class=\"token keyword\">import<\/span> asyncio<\/p>\n<p>server <span class=\"token operator\">&#061;<\/span> FastMCP<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Server&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token decorator annotation punctuation\">&#064;server<span class=\"token punctuation\">.<\/span>tool<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">fire_notifications<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    context<span class=\"token punctuation\">:<\/span> Context<span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    params <span class=\"token operator\">&#061;<\/span> ResourceUpdatedNotificationParams<span class=\"token punctuation\">(<\/span>uri<span class=\"token operator\">&#061;<\/span>AnyUrl<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;file:\/\/\/path\/to\/resource&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> context<span class=\"token punctuation\">.<\/span>send_notification<span class=\"token punctuation\">(<\/span>ResourceUpdatedNotification<span class=\"token punctuation\">(<\/span>params<span class=\"token operator\">&#061;<\/span>params<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> context<span class=\"token punctuation\">.<\/span>send_notification<span class=\"token punctuation\">(<\/span>ResourceListChangedNotification<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> context<span class=\"token punctuation\">.<\/span>send_notification<span class=\"token punctuation\">(<\/span>ToolListChangedNotification<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> context<span class=\"token punctuation\">.<\/span>send_notification<span class=\"token punctuation\">(<\/span>PromptListChangedNotification<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">handle_notifications<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    message<span class=\"token punctuation\">:<\/span> RequestResponder<span class=\"token punctuation\">[<\/span>ServerRequest<span class=\"token punctuation\">,<\/span> ClientResult<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">|<\/span> ServerNotification <span class=\"token operator\">|<\/span> Exception<span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">match<\/span> message<span class=\"token punctuation\">.<\/span>root<span class=\"token punctuation\">:<\/span> <span class=\"token comment\"># type: ignore<\/span><br \/>\n        <span class=\"token keyword\">case<\/span> ResourceUpdatedNotification<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Received resource updated notification for URI:&#034;<\/span><span class=\"token punctuation\">,<\/span> message<span class=\"token punctuation\">.<\/span>root<span class=\"token punctuation\">.<\/span>params<span class=\"token punctuation\">.<\/span>uri<span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># type: ignore<\/span><br \/>\n        <span class=\"token keyword\">case<\/span> ResourceListChangedNotification<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Received resource list changed notification&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">case<\/span> ToolListChangedNotification<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Received tool list changed notification&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">case<\/span> PromptListChangedNotification<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Received prompt list changed notification&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">with<\/span> Client<span class=\"token punctuation\">(<\/span>server<span class=\"token punctuation\">,<\/span> message_handler<span class=\"token operator\">&#061;<\/span>handle_notifications<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">as<\/span> client<span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> client<span class=\"token punctuation\">.<\/span>call_tool<span class=\"token punctuation\">(<\/span><br \/>\n            name<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;fire_notifications&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> asyncio<span class=\"token punctuation\">.<\/span>sleep<span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># Wait for notifications to be processed<\/span><\/p>\n<p>asyncio<span class=\"token punctuation\">.<\/span>run<span class=\"token punctuation\">(<\/span>main<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8f93\u51fa&#xff1a;<\/p>\n<p>Received resource updated notification for URI: file:\/\/\/path\/to\/resource<br \/>\nReceived resource list changed notification<br \/>\nReceived tool list changed notification<br \/>\nReceived prompt list changed notification<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ece\u901a\u4fe1\u6216\u8005\u6d88\u606f\u4ea4\u6362\u6a21\u5f0f\u6765\u770b&#xff0c;\u524d\u9762\u6d89\u53ca\u7684\u90fd\u662f\u4ece\u5ba2\u6237\u7aef\u53d1\u9001\u8bf7\u6c42\u5230\u670d\u52a1\u5668\u5e76\u5f97\u5230\u5bf9\u5e94\u7684\u54cd\u5e94&#xff0c;\u8fd9\u662f\u5178\u578b\u7684\u4ece\u5ba2\u6237\u7aef\u5230\u670d\u52a1\u5668\u7684\u8bf7\u6c42\/\u54cd\u5e94\u6a21\u5f0f&#xff0c;\u63a5\u4e0b\u6765\u6211\u4eec\u4ecb\u7ecd\u4e24\u79cd\u4ece\u670d\u52a1\u5668\u5411\u5ba2\u6237\u7aef\u7684\u53cd\u5411\u901a\u4fe1\u6a21\u5f0f&#xff1a;<br \/>\n\u901a\u77e5&#xff1a;\u670d\u52a1\u7aef\u53d1\u9001\u5355\u5411\u901a\u77e5\u7ed9\u5ba2\u6237\u7aef,\u5ba2\u6237\u7aef\u4e0d\u9700\u8981\u56de\u590d\u3002\u6bd4\u8f83\u5178\u578b\u5c31\u662f\u8fdb\u5ea6\u62a5\u544a\u548c\u65e5\u5fd7\u56de\u4f20&#xff0c;\u8fd9\u4e5f\u662f\u672c\u7bc7\u6587\u7ae0\u7740\u91cd\u4ecb\u7ecd\u7684\u5185\u5bb9&#xff1b;\u8bf7\u6c42&#xff1a;\u670d\u52a1\u7aef\u53d1\u9001\u8bf7\u6c42\u5230\u5ba2\u6237\u7aef&#xff0c;\u5e76\u5f97\u5230\u5bf9\u65b9\u7684\u54cd\u5e94\u3002\u6bd4\u8f83\u5178\u578b\u7684<\/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":[71,53,4258,73,81],"topic":[],"class_list":["post-84454","post","type-post","status-publish","format-standard","hentry","category-server","tag-ai-agent","tag-ai","tag-fastmcp","tag-mcp","tag-python"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 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