{"id":43352,"date":"2025-06-12T07:30:57","date_gmt":"2025-06-11T23:30:57","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/43352.html"},"modified":"2025-06-12T07:30:57","modified_gmt":"2025-06-11T23:30:57","slug":"%e8%81%8a%e8%81%8a-sse%ef%bc%9a%e8%ae%a9%e6%9c%8d%e5%8a%a1%e5%99%a8%e4%b8%bb%e5%8a%a8%e5%bc%80%e5%8f%a3%e8%af%b4%e8%af%9d%e7%9a%84%e9%80%9a%e4%bf%a1%e6%96%b9%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/43352.html","title":{"rendered":"\u804a\u804a SSE\uff1a\u8ba9\u670d\u52a1\u5668\u201c\u4e3b\u52a8\u5f00\u53e3\u8bf4\u8bdd\u201d\u7684\u901a\u4fe1\u65b9\u5f0f"},"content":{"rendered":"<p>\u4f60\u6709\u6ca1\u6709\u60f3\u8fc7&#xff0c;\u4e3a\u4ec0\u4e48 ChatGPT \u80fd\u591f\u50cf\u4eba\u7c7b\u804a\u5929\u4e00\u6837&#xff0c;\u4e00\u4e2a\u5b57\u4e00\u4e2a\u5b57\u5730&#034;\u8e66&#034;\u51fa\u6765\u56de\u7b54\u4f60\u7684\u95ee\u9898&#xff1f;\u4e3a\u4ec0\u4e48\u80a1\u7968\u8f6f\u4ef6\u80fd\u591f\u5b9e\u65f6\u66f4\u65b0\u4ef7\u683c&#xff0c;\u800c\u4e0d\u9700\u8981\u4f60\u75af\u72c2\u5237\u65b0\u9875\u9762&#xff1f;<\/p>\n<p>\u7b54\u6848\u5c31\u85cf\u5728\u4eca\u5929\u6211\u4eec\u8981\u804a\u7684\u6280\u672f\u91cc\u2014\u2014SSE&#xff08;Server-Sent Events&#xff09;!<\/p>\n<h3>\u4e00\u3001\u4ec0\u4e48\u662f SSE&#xff1f;\u901a\u4fd7\u6bd4\u55bb\u4e86\u89e3\u5b83<\/h3>\n<p>\u6211\u4eec\u7528\u4e00\u4e2a\u996d\u5e97\u7684\u6bd4\u55bb\u6765\u89e3\u91ca&#xff1a;<\/p>\n<ul>\n<li>\u8f6e\u8be2&#xff1a;\u4f60\u70b9\u4e86\u83dc\u4e4b\u540e&#xff0c;\u6bcf\u9694\u4e00\u4f1a\u513f\u5c31\u8dd1\u53bb\u95ee\u670d\u52a1\u5458&#xff1a;\u201c\u6211\u7684\u83dc\u597d\u4e86\u6ca1&#xff1f;\u201d<\/li>\n<li>SSE&#xff1a;\u4f60\u70b9\u4e86\u83dc&#xff0c;\u5b89\u5fc3\u5750\u7740\u3002\u996d\u505a\u597d\u4e86&#xff0c;\u670d\u52a1\u5458\u4e3b\u52a8\u6765\u544a\u8bc9\u4f60&#xff1a;\u201c\u4e0a\u83dc\u5566&#xff01;\u201d<\/li>\n<li>WebSocket&#xff1a;\u4f60\u548c\u670d\u52a1\u5458\u4e4b\u95f4\u88c5\u4e86\u4e2a\u5bf9\u8bb2\u673a&#xff0c;\u968f\u65f6\u53ef\u4ee5\u4e92\u76f8\u8bf4\u8bdd\u3002<\/li>\n<\/ul>\n<p>SSE&#xff08;Server-Sent Events&#xff09;\u662f\u4e00\u79cd\u57fa\u4e8eHTTP\u7684\u5355\u5411\u901a\u4fe1\u534f\u8bae&#xff0c;\u5141\u8bb8\u670d\u52a1\u5668\u4e3b\u52a8\u5411\u6d4f\u89c8\u5668\u63a8\u9001\u6570\u636e\u3002\u5b83\u5c31\u50cf\u4e00\u6839\u4ece\u670d\u52a1\u5668\u8fde\u5230\u6d4f\u89c8\u5668\u7684\u201c\u6570\u636e\u6c34\u7ba1\u201d&#xff0c;\u6253\u5f00\u540e\u670d\u52a1\u5668\u53ef\u4ee5\u968f\u65f6\u901a\u8fc7\u8fd9\u6839\u7ba1\u5b50\u201c\u6d47\u6c34\u201d&#xff08;\u63a8\u9001\u6570\u636e&#xff09;\u3002<\/p>\n<p>\u6838\u5fc3\u7279\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u2705 \u5355\u5411\u901a\u4fe1&#xff1a;\u670d\u52a1\u5668 \u2192 \u6d4f\u89c8\u5668&#xff08;\u50cf\u5e7f\u64ad\u7535\u53f0&#xff09;<\/li>\n<li>\u2705 \u57fa\u4e8eHTTP&#xff1a;\u65e0\u9700\u7279\u6b8a\u534f\u8bae<\/li>\n<li>\u2705 \u81ea\u52a8\u91cd\u8fde&#xff1a;\u7f51\u7edc\u4e2d\u65ad\u4f1a\u81ea\u52a8\u6062\u590d<\/li>\n<li>\u2705 \u8f7b\u91cf\u7ea7&#xff1a;\u539f\u751f\u6d4f\u89c8\u5668\u652f\u6301&#xff0c;\u65e0\u9700\u989d\u5916\u5e93<\/li>\n<li>\u23f1\ufe0f \u4f4e\u5ef6\u8fdf&#xff1a;\u6570\u636e\u5b9e\u65f6\u5230\u8fbe&#xff08;\u6beb\u79d2\u7ea7&#xff09;<\/li>\n<\/ul>\n<h3>\u4e8c\u3001SSE \u548c\u5176\u4ed6\u901a\u4fe1\u65b9\u5f0f\u7684\u5bf9\u6bd4<\/h3>\n<p>\u6211\u4eec\u6765\u770b\u4e00\u5f20\u76f4\u89c2\u7684\u5bf9\u6bd4\u8868&#xff1a;<\/p>\n<table>\n<tr>\u6280\u672f\u901a\u4fe1\u65b9\u5411\u534f\u8bae\u4f7f\u7528\u590d\u6742\u5ea6\u9002\u7528\u573a\u666f\u662f\u5426\u652f\u6301\u6d4f\u89c8\u5668\u539f\u751f<\/tr>\n<tbody>\n<tr>\n<td>\u8f6e\u8be2&#xff08;HTTP Polling&#xff09;<\/td>\n<td>\u5ba2\u6237\u7aef \u279c \u670d\u52a1\u7aef<\/td>\n<td>HTTP<\/td>\n<td>\u7b80\u5355<\/td>\n<td>\u6d88\u606f\u4e0d\u9891\u7e41\u7684\u5e94\u7528<\/td>\n<td>\u2705<\/td>\n<\/tr>\n<tr>\n<td>\u957f\u8f6e\u8be2&#xff08;HTTP Long Polling&#xff09;<\/td>\n<td>\u5ba2\u6237\u7aef \u279c \u670d\u52a1\u7aef<\/td>\n<td>HTTP<\/td>\n<td>\u4e2d\u7b49<\/td>\n<td>\u4f4e\u9891\u4f46\u5bf9\u5b9e\u65f6\u6027\u6709\u8981\u6c42<\/td>\n<td>\u2705<\/td>\n<\/tr>\n<tr>\n<td>SSE<\/td>\n<td>\u670d\u52a1\u7aef \u279c \u5ba2\u6237\u7aef<\/td>\n<td>HTTP<\/td>\n<td>\u7b80\u5355<\/td>\n<td>\u6d88\u606f\u6d41\u5b9e\u65f6\u63a8\u9001<\/td>\n<td>\u2705&#xff08;\u9664 IE&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>WebSocket<\/td>\n<td>\u53cc\u5411<\/td>\n<td>\u81ea\u5b9a\u4e49\u534f\u8bae<\/td>\n<td>\u590d\u6742<\/td>\n<td>\u804a\u5929\u3001\u6e38\u620f\u3001IoT \u7b49<\/td>\n<td>\u2705<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>&#x1f50d; \u573a\u666f\u9009\u62e9\u6307\u5357&#xff1a;<\/h4>\n<ul>\n<li>&#x1f6a8; \u9009SSE&#xff1a;\u5f53\u53ea\u9700\u8981\u670d\u52a1\u5668\u5355\u5411\u63a8\u9001\u65f6&#xff08;\u5982\u65b0\u95fb\u63a8\u9001\u3001\u76d1\u63a7\u4eea\u8868\u76d8&#xff09;&#xff0c;SSE \u662f\u6700\u7b80\u5355\u7701\u4e8b\u7684\u9009\u62e9\u3002<\/li>\n<li>&#x1f3ae; \u9009WebSocket&#xff1a;\u9700\u8981\u53cc\u5411\u5b9e\u65f6\u901a\u4fe1&#xff08;\u5982\u5728\u7ebf\u6e38\u620f&#xff09;&#xff0c;\u90a3\u5c31\u8bf7 WebSocket \u767b\u573a\u3002<\/li>\n<li>\u23f3 \u9009\u8f6e\u8be2\/\u957f\u8f6e\u8be2&#xff1a;\u5982\u679c\u53ea\u662f\u5076\u5c14\u6709\u6570\u636e\u53d8\u5316&#xff0c;\u4f7f\u7528\u8f6e\u8be2\u4e5f\u8bb8\u66f4\u7b80\u5355\u7c97\u66b4\u3002<\/li>\n<\/ul>\n<p>&#x1f4a1; \u7cbe\u5999\u6bd4\u55bb&#xff1a;<\/p>\n<ul>\n<li>SSE \u50cf\u6536\u97f3\u673a&#xff08;\u53ea\u80fd\u63a5\u6536\u4fe1\u53f7&#xff09;<\/li>\n<li>WebSocket \u50cf\u7535\u8bdd&#xff08;\u53cc\u5411\u901a\u8bdd&#xff09;<\/li>\n<li>\u8f6e\u8be2 \u50cf\u4e0d\u65ad\u7ffb\u4fe1\u7bb1\u67e5\u4fe1<\/li>\n<li>\u957f\u8f6e\u8be2 \u50cf\u5b88\u5728\u4fe1\u7bb1\u65c1\u7b49\u90ae\u5dee<\/li>\n<\/ul>\n<h3>\u4e09\u3001SSE \u7684\u539f\u7406<\/h3>\n<p>\u6211\u4eec\u7528\u4e00\u4e2a\u56fe\u6765\u7b80\u5355\u63cf\u7ed8 SSE \u7684\u5de5\u4f5c\u8fc7\u7a0b&#xff1a;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611233054-684a11aea2cc3.jpg\" \/> <\/p>\n<h4>&#x1f4e6; \u5173\u952e\u8981\u7d20\u89e3\u6790<\/h4>\n<li>HTTP \u8bf7\u6c42\u5934&#xff1a;\u5ba2\u6237\u7aef\u53d1\u9001 Accept: text\/event-stream \u544a\u8bc9\u670d\u52a1\u5668&#034;\u6211\u8981\u63a5\u6536\u4e8b\u4ef6\u6d41&#034;<\/li>\n<li>\u54cd\u5e94\u683c\u5f0f&#xff1a;\u670d\u52a1\u5668\u8fd4\u56de Content-Type: text\/event-stream&#xff0c;\u7136\u540e\u6301\u7eed\u53d1\u9001\u6570\u636e<\/li>\n<li>\u4e8b\u4ef6\u683c\u5f0f&#xff1a;\u6bcf\u4e2a\u4e8b\u4ef6\u4ee5 data: \u5185\u5bb9\\\\n\\\\n \u7ed3\u675f&#xff0c;\u4e24\u4e2a\u6362\u884c\u7b26\u8868\u793a\u4e8b\u4ef6\u7ed3\u675f<\/li>\n<li>\u81ea\u52a8\u91cd\u8fde&#xff1a;\u8fde\u63a5\u65ad\u5f00\u540e&#xff0c;\u6d4f\u89c8\u5668\u4f1a\u81ea\u52a8\u53d1\u8d77\u65b0\u7684\u8fde\u63a5\u8bf7\u6c42<\/li>\n<h3>\u56db\u3001SSE \u7684\u5b9e\u9645\u5e94\u7528\u573a\u666f<\/h3>\n<p>SSE \u5df2\u7ecf\u5728\u5f88\u591a\u4ea7\u54c1\u4e2d\u843d\u5730&#xff0c;\u4ee5\u4e0b\u662f\u51e0\u4e2a\u5178\u578b\u573a\u666f&#xff1a;<\/p>\n<h4>1. &#x1f916; ChatGPT \u7684\u56de\u7b54\u663e\u793a\u673a\u5236<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611233055-684a11af7766c.jpg\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>ChatGPT \u5728\u56de\u7b54\u4f60\u95ee\u9898\u65f6&#xff0c;\u662f\u4e00\u53e5\u4e00\u53e5\u201c\u6253\u5b57\u5f0f\u201d\u8f93\u51fa\u7684&#xff0c;\u6ca1\u9519&#xff01;\u5c31\u662f\u7528\u4e86 SSE \u6765\u6d41\u5f0f\u4f20\u8f93\u751f\u6210\u7684\u5185\u5bb9\u3002<\/p>\n<h4>2. &#x1f6a8; \u540e\u53f0\u7cfb\u7edf\u6d88\u606f\u63d0\u9192<\/h4>\n<p>\u6bd4\u5982&#xff1a;<\/p>\n<ul>\n<li>\u6709\u65b0\u7684\u8ba2\u5355&#xff1b;<\/li>\n<li>\u7528\u6237\u63d0\u4ea4\u4e86\u65b0\u8bc4\u8bba&#xff1b;<\/li>\n<li>\u540e\u53f0\u5de5\u5355\u66f4\u65b0\u4e86\u72b6\u6001\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u63d0\u9192\u90fd\u53ef\u4ee5\u7528 SSE \u6765\u5b9e\u65f6\u63a8\u9001\u3002<\/p>\n<h4>3. &#x1f4c8; \u5b9e\u65f6\u6570\u636e\u9762\u677f<\/h4>\n<ul>\n<li>\u80a1\u7968\u4ef7\u683c\u53d8\u52a8<\/li>\n<li>\u533a\u5757\u94fe\u4ea4\u6613\u52a8\u6001<\/li>\n<li>\u8bbe\u5907\u6e29\u6e7f\u5ea6\u66f4\u65b0<\/li>\n<\/ul>\n<p>\u53ea\u9700\u8981\u540e\u7aef\u6bcf\u9694\u51e0\u79d2\u63a8\u9001\u4e00\u6b21&#xff0c;\u524d\u7aef\u5c31\u80fd\u4e0d\u65ad\u5c55\u793a\u6700\u65b0\u6570\u636e\u3002<\/p>\n<h3>\u4e94\u3001\u7b80\u5355\u4ee3\u7801\u793a\u4f8b&#xff08;\u524d\u7aef &#043; \u540e\u7aef&#xff09;<\/h3>\n<h4>\u524d\u7aef\u4ee3\u7801&#xff08;\u6d4f\u89c8\u5668 JS&#xff09;<\/h4>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>script<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token script\"><span class=\"token language-javascript\"><br \/>\n  <span class=\"token keyword\">const<\/span> eventSource <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">EventSource<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/sse\/stream&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  eventSource<span class=\"token punctuation\">.<\/span><span class=\"token function-variable function\">onmessage<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">event<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u6536\u5230\u6d88\u606f&#xff1a;&#039;<\/span><span class=\"token punctuation\">,<\/span> event<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u53ef\u66f4\u65b0\u5230\u9875\u9762\u4e0a<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  eventSource<span class=\"token punctuation\">.<\/span><span class=\"token function-variable function\">onerror<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">err<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u8fde\u63a5\u51fa\u9519&#039;<\/span><span class=\"token punctuation\">,<\/span> err<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u53ef\u4ee5\u5c55\u793a\u8fde\u63a5\u65ad\u5f00\u7684\u63d0\u793a<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>script<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h4>\u540e\u7aef\u4ee3\u7801\u793a\u4f8b<\/h4>\n<h5>\u540e\u7aef&#xff08;Java&#xff0c;\u4f7f\u7528 Spring Boot \u793a\u4f8b&#xff09;<\/h5>\n<p><span class=\"token annotation punctuation\">&#064;RestController<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">SseController<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">Map<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">SseEmitter<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> emitters <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ConcurrentHashMap<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u6d4f\u89c8\u5668\u8fde\u63a5\u5165\u53e3<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;GetMapping<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/sse-connect&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">SseEmitter<\/span> <span class=\"token function\">connect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token annotation punctuation\">&#064;RequestParam<\/span> <span class=\"token class-name\">String<\/span> userId<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">SseEmitter<\/span> emitter <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">SseEmitter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">30<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">60<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">1000L<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ 30\u5206\u949f\u8d85\u65f6<\/span><br \/>\n        emitters<span class=\"token punctuation\">.<\/span><span class=\"token function\">put<\/span><span class=\"token punctuation\">(<\/span>userId<span class=\"token punctuation\">,<\/span> emitter<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u53d1\u9001\u6b22\u8fce\u6d88\u606f<\/span><br \/>\n        <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            emitter<span class=\"token punctuation\">.<\/span><span class=\"token function\">send<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">SseEmitter<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">event<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                    <span class=\"token punctuation\">.<\/span><span class=\"token function\">name<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;welcome&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                    <span class=\"token punctuation\">.<\/span><span class=\"token function\">data<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#x1f389; \u8fde\u63a5\u6210\u529f&#xff01;\u6b22\u8fce\u4f7f\u7528 SSE \u670d\u52a1&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IOException<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>err<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u53d1\u9001\u6b22\u8fce\u6d88\u606f\u5931\u8d25: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> e<span class=\"token punctuation\">.<\/span><span class=\"token function\">getMessage<\/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 punctuation\">}<\/span><\/p>\n<p>        emitter<span class=\"token punctuation\">.<\/span><span class=\"token function\">onCompletion<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">-&gt;<\/span> emitters<span class=\"token punctuation\">.<\/span><span class=\"token function\">remove<\/span><span class=\"token punctuation\">(<\/span>userId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        emitter<span class=\"token punctuation\">.<\/span><span class=\"token function\">onTimeout<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">-&gt;<\/span> emitters<span class=\"token punctuation\">.<\/span><span class=\"token function\">remove<\/span><span class=\"token punctuation\">(<\/span>userId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">return<\/span> emitter<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u6a21\u62df\u63a8\u9001\u670d\u52a1<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Scheduled<\/span><span class=\"token punctuation\">(<\/span>fixedRate <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">2000<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">pushData<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        emitters<span class=\"token punctuation\">.<\/span><span class=\"token function\">forEach<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>userId<span class=\"token punctuation\">,<\/span> emitter<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">-&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token class-name\">String<\/span> json <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">String<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">format<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                        <span class=\"token string\">&#034;{\\\\&#034;time\\\\&#034;: \\\\&#034;%s\\\\&#034;, \\\\&#034;value\\\\&#034;: %.2f}&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                        <span class=\"token class-name\">LocalTime<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">now<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Math<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">random<\/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 punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>                <span class=\"token comment\">\/\/ \u6784\u5efa\u7b26\u5408SSE\u683c\u5f0f\u7684\u6d88\u606f<\/span><br \/>\n                emitter<span class=\"token punctuation\">.<\/span><span class=\"token function\">send<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">SseEmitter<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">event<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                        <span class=\"token punctuation\">.<\/span><span class=\"token function\">id<\/span><span class=\"token punctuation\">(<\/span><span class=\"token constant\">UUID<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">randomUUID<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">toString<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                        <span class=\"token punctuation\">.<\/span><span class=\"token function\">name<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;system-metrics&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                        <span class=\"token punctuation\">.<\/span><span class=\"token function\">data<\/span><span class=\"token punctuation\">(<\/span>json<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IOException<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                emitters<span class=\"token punctuation\">.<\/span><span class=\"token function\">remove<\/span><span class=\"token punctuation\">(<\/span>userId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>curl &#8211;location &#039;localhost:18500\/sse-connect?userId&#061;1&#039; \\\\<br \/>\n&#8211;header &#039;Key: Accept&#039; \\\\<br \/>\n&#8211;header &#039;Value: text\/event-stream&#039;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611233055-684a11af86e29.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u516d\u3001\u603b\u7ed3<\/h3>\n<p>SSE 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