{"id":81370,"date":"2026-07-25T01:21:40","date_gmt":"2026-07-24T17:21:40","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/81370.html"},"modified":"2026-07-25T01:21:40","modified_gmt":"2026-07-24T17:21:40","slug":"%e6%9c%8d%e5%8a%a1%e5%99%a8%e4%b8%bb%e5%8a%a8%e6%8e%a8%e9%80%81%e6%95%b0%e6%8d%ae%e5%88%b0%e5%ae%a2%e6%88%b7%e7%ab%af%e7%9a%84%e5%87%a0%e7%a7%8d%e6%96%b9%e5%bc%8f%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/81370.html","title":{"rendered":"\u670d\u52a1\u5668\u4e3b\u52a8\u63a8\u9001\u6570\u636e\u5230\u5ba2\u6237\u7aef\u7684\u51e0\u79cd\u65b9\u5f0f\u8be6\u89e3"},"content":{"rendered":"<\/p>\n<h4>\u670d\u52a1\u5668\u4e3b\u52a8\u63a8\u9001\u6570\u636e\u5230\u5ba2\u6237\u7aef\u7684\u51e0\u79cd\u65b9\u5f0f\u8be6\u89e3<\/h4>\n<ul>\n<li>\n<ul>\n<li>\u5f15\u8a00<\/li>\n<li>1. \u77ed\u8f6e\u8be2&#xff08;Short Polling&#xff09;<\/li>\n<li>\n<ul>\n<li>\u539f\u7406<\/li>\n<li>\u4f18\u7f3a\u70b9<\/li>\n<\/ul>\n<\/li>\n<li>2. \u957f\u8f6e\u8be2&#xff08;Long Polling&#xff09;<\/li>\n<li>\n<ul>\n<li>\u539f\u7406<\/li>\n<li>\u4f18\u7f3a\u70b9<\/li>\n<\/ul>\n<\/li>\n<li>3. XHR Multipart Streaming<\/li>\n<li>\n<ul>\n<li>\u539f\u7406<\/li>\n<li>\u4f18\u7f3a\u70b9<\/li>\n<\/ul>\n<\/li>\n<li>4. Server-Sent Events (SSE)<\/li>\n<li>\n<ul>\n<li>\u539f\u7406<\/li>\n<li>\u4f18\u7f3a\u70b9<\/li>\n<\/ul>\n<\/li>\n<li>5. WebSocket<\/li>\n<li>\n<ul>\n<li>\u539f\u7406<\/li>\n<li>WebSocket\u901a\u8fc7Flash\u5b9e\u73b0<\/li>\n<li>\u4f18\u7f3a\u70b9<\/li>\n<\/ul>\n<\/li>\n<li>6. \u57fa\u4e8eIframe\u7684\u63a8\u9001&#xff08;Comet&#xff09;<\/li>\n<li>\n<ul>\n<li>\u539f\u7406<\/li>\n<li>\u4f18\u7f3a\u70b9<\/li>\n<\/ul>\n<\/li>\n<li>7. \u57fa\u4e8eScript\u6807\u7b7e\u7684\u957f\u8fde\u63a5&#xff08;JSONP Polling&#xff09;<\/li>\n<li>\n<ul>\n<li>\u539f\u7406<\/li>\n<li>\u4f18\u7f3a\u70b9<\/li>\n<\/ul>\n<\/li>\n<li>8. \u6280\u672f\u5bf9\u6bd4\u603b\u7ed3<\/li>\n<li>9. \u9009\u578b\u5efa\u8bae<\/li>\n<li>\n<ul>\n<li>\u6839\u636e\u4e1a\u52a1\u573a\u666f\u9009\u62e9<\/li>\n<li>\u73b0\u4ee3\u5e94\u7528\u67b6\u6784\u63a8\u8350<\/li>\n<\/ul>\n<\/li>\n<li>\u7ed3\u8bed<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<table width=\"100%\">\n<tbody>\n<tr>\n<td width=\"50%\">\n<p>     <font face=\"STCAIYUN\" color=\"red\" size=\"4\">&#x1f33a;The Begin&#x1f33a;\u70b9\u70b9\u5173\u6ce8&#xff0c;\u6536\u85cf\u4e0d\u8ff7\u8def&#x1f33a;<\/font>\n     <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u5f15\u8a00<\/h3>\n<p>\u5728\u4f20\u7edf\u7684Web\u5e94\u7528\u4e2d&#xff0c;\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u7684\u901a\u4fe1\u6a21\u5f0f\u901a\u5e38\u662f\u201c\u5ba2\u6237\u7aef\u8bf7\u6c42 &#8211; \u670d\u52a1\u5668\u54cd\u5e94\u201d\u3002\u8fd9\u79cd\u6a21\u5f0f\u5bf9\u4e8e\u9700\u8981\u5b9e\u65f6\u66f4\u65b0\u7684\u529f\u80fd&#xff08;\u5982\u5373\u65f6\u6d88\u606f\u3001\u80a1\u7968\u884c\u60c5\u3001\u6e38\u620f\u5bf9\u6218&#xff09;\u663e\u5f97\u529b\u4e0d\u4ece\u5fc3\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898&#xff0c;\u4e1a\u754c\u53d1\u5c55\u51fa\u4e86\u591a\u79cd\u670d\u52a1\u5668\u4e3b\u52a8\u63a8\u9001\u6570\u636e\u7684\u6280\u672f\u65b9\u6848\u3002<\/p>\n<p>\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u51e0\u79cd\u4e3b\u6d41\u7684\u670d\u52a1\u5668\u63a8\u9001\u6280\u672f&#xff0c;\u5206\u6790\u5404\u81ea\u7684\u539f\u7406\u3001\u4f18\u7f3a\u70b9\u53ca\u9002\u7528\u573a\u666f\u3002<\/p>\n<h3>1. \u77ed\u8f6e\u8be2&#xff08;Short Polling&#xff09;<\/h3>\n<p>\u867d\u7136\u4e25\u683c\u610f\u4e49\u4e0a\u4e0d\u5c5e\u4e8e\u201c\u4e3b\u52a8\u63a8\u9001\u201d&#xff0c;\u4f46\u4f5c\u4e3a\u6700\u57fa\u7840\u7684\u5b9e\u73b0\u65b9\u5f0f&#xff0c;\u6709\u5fc5\u8981\u5148\u4e86\u89e3\u3002<\/p>\n<h4>\u539f\u7406<\/h4>\n<p>\u5ba2\u6237\u7aef\u901a\u8fc7JavaScript\u5b9a\u65f6\u5668&#xff08;\u5982setInterval&#xff09;\u6bcf\u9694\u4e00\u6bb5\u65f6\u95f4\u5411\u670d\u52a1\u5668\u53d1\u9001HTTP\u8bf7\u6c42&#xff0c;\u670d\u52a1\u5668\u7acb\u5373\u8fd4\u56de\u6570\u636e&#xff08;\u65e0\u8bba\u662f\u5426\u6709\u66f4\u65b0&#xff09;\u3002<\/p>\n<p><span class=\"token comment\">\/\/ \u5ba2\u6237\u7aef\u4ee3\u7801\u793a\u4f8b<\/span><br \/>\n<span class=\"token function\">setInterval<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">fetch<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/api\/get-updates&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">then<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">response<\/span> <span class=\"token operator\">&#061;&gt;<\/span> response<span class=\"token punctuation\">.<\/span><span class=\"token function\">json<\/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\">then<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">data<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token function\">handleData<\/span><span class=\"token punctuation\">(<\/span>data<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 punctuation\">,<\/span> <span class=\"token number\">3000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6bcf3\u79d2\u8bf7\u6c42\u4e00\u6b21<\/span><\/p>\n<h4>\u4f18\u7f3a\u70b9<\/h4>\n<ul>\n<li>\u2705 \u5b9e\u73b0\u7b80\u5355&#xff0c;\u517c\u5bb9\u6240\u6709\u6d4f\u89c8\u5668<\/li>\n<li>\u274c \u5b9e\u65f6\u6027\u5dee&#xff08;\u53d6\u51b3\u4e8e\u95f4\u9694\u65f6\u95f4&#xff09;<\/li>\n<li>\u274c \u5927\u91cf\u65e0\u6548\u8bf7\u6c42&#xff0c;\u6d6a\u8d39\u5e26\u5bbd\u548c\u670d\u52a1\u5668\u8d44\u6e90<\/li>\n<\/ul>\n<h3>2. \u957f\u8f6e\u8be2&#xff08;Long Polling&#xff09;<\/h3>\n<p>\u957f\u8f6e\u8be2\u662f\u5bf9\u77ed\u8f6e\u8be2\u7684\u6539\u8fdb&#xff0c;\u4e5f\u662f\u65e9\u671f\u6700\u5e38\u7528\u7684\u201c\u4f2a\u63a8\u9001\u201d\u6280\u672f\u3002<\/p>\n<h4>\u539f\u7406<\/h4>\n<p>\u5ba2\u6237\u7aef\u53d1\u9001\u8bf7\u6c42\u5230\u670d\u52a1\u5668\u540e&#xff0c;\u670d\u52a1\u5668\u4fdd\u6301\u8fde\u63a5\u6253\u5f00&#xff0c;\u76f4\u5230\u6709\u65b0\u6570\u636e\u53ef\u53d1\u9001\u6216\u8d85\u65f6\u624d\u8fd4\u56de\u54cd\u5e94\u3002\u5ba2\u6237\u7aef\u6536\u5230\u54cd\u5e94\u540e\u7acb\u5373\u53d1\u8d77\u4e0b\u4e00\u6b21\u8bf7\u6c42\u3002<\/p>\n<p><span class=\"token comment\">\/\/ \u5ba2\u6237\u7aef\u957f\u8f6e\u8be2\u5b9e\u73b0<\/span><br \/>\n<span class=\"token keyword\">function<\/span> <span class=\"token function\">longPoll<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">fetch<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/api\/long-poll&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">then<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">response<\/span> <span class=\"token operator\">&#061;&gt;<\/span> response<span class=\"token punctuation\">.<\/span><span class=\"token function\">json<\/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\">then<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">data<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">handleData<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">longPoll<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6536\u5230\u54cd\u5e94\u540e\u7acb\u5373\u53d1\u8d77\u65b0\u8bf7\u6c42<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">catch<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">err<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">setTimeout<\/span><span class=\"token punctuation\">(<\/span>longPoll<span class=\"token punctuation\">,<\/span> <span class=\"token number\">5000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u51fa\u9519\u540e\u5ef6\u8fdf\u91cd\u8fde<\/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 function\">longPoll<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u670d\u52a1\u7aef\u4f2a\u4ee3\u7801&#xff08;Servlet 3.0\u5f02\u6b65\u652f\u6301&#xff09;<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;WebServlet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/api\/long-poll&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">LongPollServlet<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">HttpServlet<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">doGet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletRequest<\/span> req<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">HttpServletResponse<\/span> resp<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">AsyncContext<\/span> asyncCtx <span class=\"token operator\">&#061;<\/span> req<span class=\"token punctuation\">.<\/span><span class=\"token function\">startAsync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        asyncCtx<span class=\"token punctuation\">.<\/span><span class=\"token function\">setTimeout<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">30000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ 30\u79d2\u8d85\u65f6<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u5c06asyncCtx\u52a0\u5165\u961f\u5217&#xff0c;\u5f53\u6709\u6570\u636e\u65f6\u518d\u5199\u5165\u54cd\u5e94<\/span><br \/>\n        pollQueue<span class=\"token punctuation\">.<\/span><span class=\"token function\">register<\/span><span class=\"token punctuation\">(<\/span>asyncCtx<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<h4>\u4f18\u7f3a\u70b9<\/h4>\n<ul>\n<li>\u2705 \u76f8\u6bd4\u77ed\u8f6e\u8be2&#xff0c;\u51cf\u5c11\u4e86\u65e0\u6548\u8bf7\u6c42\u6b21\u6570<\/li>\n<li>\u2705 \u5b9e\u65f6\u6027\u8f83\u597d<\/li>\n<li>\u274c \u4ecd\u7136\u5b58\u5728\u8fde\u63a5\u5f00\u9500<\/li>\n<li>\u274c \u670d\u52a1\u5668\u9700\u8981\u7ef4\u62a4\u6302\u8d77\u7684\u8fde\u63a5&#xff0c;\u53ef\u80fd\u6d88\u8017\u8f83\u591a\u8d44\u6e90<\/li>\n<\/ul>\n<h3>3. XHR Multipart Streaming<\/h3>\n<p>\u8fd9\u662f\u4e00\u79cd\u8f83\u8001\u7684\u6280\u672f&#xff0c;\u5229\u7528XHR\u5bf9\u8c61\u63a5\u6536multipart\/mixed\u683c\u5f0f\u7684\u54cd\u5e94\u3002<\/p>\n<h4>\u539f\u7406<\/h4>\n<p>\u670d\u52a1\u5668\u5206\u5757\u53d1\u9001\u6570\u636e&#xff0c;\u6bcf\u4e2a\u5757\u4f5c\u4e3amultipart\u7684\u4e00\u90e8\u5206&#xff0c;\u5ba2\u6237\u7aef\u901a\u8fc7\u76d1\u542creadyState\u4e3a3&#xff08;\u4ea4\u4e92\u72b6\u6001&#xff09;\u6765\u9010\u6b65\u8bfb\u53d6\u5df2\u63a5\u6536\u7684\u6570\u636e\u3002<\/p>\n<p><span class=\"token comment\">\/\/ \u5ba2\u6237\u7aef\u4ee3\u7801<\/span><br \/>\n<span class=\"token keyword\">var<\/span> xhr <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">XMLHttpRequest<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nxhr<span class=\"token punctuation\">.<\/span>multipart <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u90e8\u5206\u6d4f\u89c8\u5668\u9700\u8981\u8bbe\u7f6e<\/span><br \/>\nxhr<span class=\"token punctuation\">.<\/span><span class=\"token function\">open<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;GET&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;\/api\/stream&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nxhr<span class=\"token punctuation\">.<\/span><span class=\"token function-variable function\">onreadystatechange<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>xhr<span class=\"token punctuation\">.<\/span>readyState <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u63a5\u6536\u5230\u90e8\u5206\u6570\u636e<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u89e3\u6790multipart\u6570\u636e\u5757<\/span><br \/>\n        <span class=\"token function\">processData<\/span><span class=\"token punctuation\">(<\/span>xhr<span class=\"token punctuation\">.<\/span>responseText<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><br \/>\nxhr<span class=\"token punctuation\">.<\/span><span class=\"token function\">send<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h4>\u4f18\u7f3a\u70b9<\/h4>\n<ul>\n<li>\u2705 \u4fdd\u6301\u5355\u4e00\u957f\u8fde\u63a5&#xff0c;\u6301\u7eed\u63a5\u6536\u6570\u636e<\/li>\n<li>\u274c \u6d4f\u89c8\u5668\u652f\u6301\u5ea6\u6709\u9650<\/li>\n<li>\u274c multipart\u89e3\u6790\u590d\u6742<\/li>\n<\/ul>\n<h3>4. Server-Sent Events (SSE)<\/h3>\n<p>SSE\u662fHTML5\u89c4\u8303\u4e2d\u4e13\u95e8\u7528\u4e8e\u670d\u52a1\u5668\u63a8\u9001\u7684\u6280\u672f\u3002<\/p>\n<h4>\u539f\u7406<\/h4>\n<p>\u5ba2\u6237\u7aef\u901a\u8fc7EventSource API\u4e0e\u670d\u52a1\u5668\u5efa\u7acb\u8fde\u63a5&#xff0c;\u670d\u52a1\u5668\u4ee5text\/event-stream\u683c\u5f0f\u6301\u7eed\u53d1\u9001\u6570\u636e\u3002\u8fde\u63a5\u4e00\u65e6\u5efa\u7acb&#xff0c;\u670d\u52a1\u5668\u53ef\u4ee5\u968f\u65f6\u53d1\u9001\u6d88\u606f\u3002<\/p>\n<p><span class=\"token comment\">\/\/ \u5ba2\u6237\u7aefSSE\u5b9e\u73b0<\/span><br \/>\n<span class=\"token keyword\">var<\/span> source <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;\/api\/sse&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u76d1\u542c\u547d\u540d\u4e8b\u4ef6<\/span><br \/>\nsource<span class=\"token punctuation\">.<\/span><span class=\"token function\">addEventListener<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;news&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">e<\/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\u65b0\u95fb:&#039;<\/span><span class=\"token punctuation\">,<\/span> e<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u76d1\u542c\u9ed8\u8ba4\u6d88\u606f<\/span><br \/>\nsource<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\">e<\/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:&#039;<\/span><span class=\"token punctuation\">,<\/span> e<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5904\u7406\u8fde\u63a5\u6253\u5f00<\/span><br \/>\nsource<span class=\"token punctuation\">.<\/span><span class=\"token function-variable function\">onopen<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">e<\/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;\u8fde\u63a5\u5df2\u5efa\u7acb&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5904\u7406\u9519\u8bef<\/span><br \/>\nsource<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\">e<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>source<span class=\"token punctuation\">.<\/span>readyState <span class=\"token operator\">&#061;&#061;&#061;<\/span> EventSource<span class=\"token punctuation\">.<\/span><span class=\"token constant\">CLOSED<\/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;\u8fde\u63a5\u5df2\u5173\u95ed&#039;<\/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><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u670d\u52a1\u7aefSSE\u5b9e\u73b0&#xff08;Spring Boot\u793a\u4f8b&#xff09;<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;GetMapping<\/span><span class=\"token punctuation\">(<\/span>path <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\/api\/sse&#034;<\/span><span class=\"token punctuation\">,<\/span> produces <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">MediaType<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">TEXT_EVENT_STREAM_VALUE<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Flux<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">sseEvents<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">Flux<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">interval<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Duration<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">ofSeconds<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">map<\/span><span class=\"token punctuation\">(<\/span>seq <span class=\"token operator\">-&gt;<\/span> <span class=\"token string\">&#034;data: \u5f53\u524d\u65f6\u95f4 &#034;<\/span> <span class=\"token operator\">&#043;<\/span> <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 operator\">&#043;<\/span> <span class=\"token string\">&#034;\\\\n\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>\u4f18\u7f3a\u70b9<\/h4>\n<ul>\n<li>\u2705 \u57fa\u4e8eHTTP\u534f\u8bae&#xff0c;\u65e0\u9700\u989d\u5916\u534f\u8bae<\/li>\n<li>\u2705 \u81ea\u52a8\u91cd\u8fde\u673a\u5236<\/li>\n<li>\u2705 \u652f\u6301\u4e8b\u4ef6\u7c7b\u578b\u533a\u5206<\/li>\n<li>\u274c \u4ec5\u652f\u6301\u6587\u672c\u6570\u636e<\/li>\n<li>\u274c \u6d4f\u89c8\u5668\u9650\u5236\u6700\u5927\u5e76\u53d1\u8fde\u63a5\u6570&#xff08;\u901a\u5e386\u4e2a&#xff09;<\/li>\n<li>\u274c \u5355\u5411\u901a\u4fe1&#xff08;\u4ec5\u670d\u52a1\u5668\u5230\u5ba2\u6237\u7aef&#xff09;<\/li>\n<\/ul>\n<h3>5. WebSocket<\/h3>\n<p>WebSocket\u662fHTML5\u5b9a\u4e49\u7684\u5168\u53cc\u5de5\u901a\u4fe1\u534f\u8bae&#xff0c;\u76ee\u524d\u6700\u4e3b\u6d41\u7684\u5b9e\u65f6\u63a8\u9001\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<h4>\u539f\u7406<\/h4>\n<p>\u901a\u8fc7HTTP\u5347\u7ea7\u534f\u8bae&#xff08;Upgrade\u5934\u90e8&#xff09;\u5efa\u7acbTCP\u957f\u8fde\u63a5&#xff0c;\u4e4b\u540e\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u53ef\u4ee5\u4e92\u76f8\u53d1\u9001\u6570\u636e\u5e27\u3002<\/p>\n<p><span class=\"token comment\">\/\/ \u5ba2\u6237\u7aefWebSocket\u5b9e\u73b0<\/span><br \/>\n<span class=\"token keyword\">var<\/span> ws <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">WebSocket<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;ws:\/\/example.com\/socket&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u8fde\u63a5\u5efa\u7acb<\/span><br \/>\nws<span class=\"token punctuation\">.<\/span><span class=\"token function-variable function\">onopen<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/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;\u8fde\u63a5\u5df2\u5efa\u7acb&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    ws<span class=\"token punctuation\">.<\/span><span class=\"token function\">send<\/span><span class=\"token punctuation\">(<\/span><span class=\"token constant\">JSON<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">stringify<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><span class=\"token literal-property property\">type<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#039;auth&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token literal-property property\">token<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#039;xxx&#039;<\/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><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u63a5\u6536\u6d88\u606f<\/span><br \/>\nws<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\">e<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">var<\/span> data <span class=\"token operator\">&#061;<\/span> <span class=\"token constant\">JSON<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">parse<\/span><span class=\"token punctuation\">(<\/span>e<span class=\"token punctuation\">.<\/span>data<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:&#039;<\/span><span class=\"token punctuation\">,<\/span> data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u53d1\u9001\u6d88\u606f<\/span><br \/>\n<span class=\"token keyword\">function<\/span> <span class=\"token function\">sendMessage<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">msg<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    ws<span class=\"token punctuation\">.<\/span><span class=\"token function\">send<\/span><span class=\"token punctuation\">(<\/span><span class=\"token constant\">JSON<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">stringify<\/span><span class=\"token punctuation\">(<\/span>msg<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><span class=\"token comment\">\/\/ \u9519\u8bef\u5904\u7406<\/span><br \/>\nws<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;WebSocket\u9519\u8bef:&#039;<\/span><span class=\"token punctuation\">,<\/span> err<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u8fde\u63a5\u5173\u95ed<\/span><br \/>\nws<span class=\"token punctuation\">.<\/span><span class=\"token function-variable function\">onclose<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/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;\u8fde\u63a5\u5df2\u5173\u95ed&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u670d\u52a1\u7aefWebSocket&#xff08;Java EE\u6ce8\u89e3&#xff09;<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;ServerEndpoint<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/websocket&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">WebSocketEndpoint<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;OnOpen<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">onOpen<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Session<\/span> session<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u8fde\u63a5\u5efa\u7acb: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> session<span class=\"token punctuation\">.<\/span><span class=\"token function\">getId<\/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>    <span class=\"token annotation punctuation\">&#064;OnMessage<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">onMessage<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> message<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Session<\/span> session<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6536\u5230\u6d88\u606f: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> message<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u5e7f\u64ad\u7ed9\u6240\u6709\u5ba2\u6237\u7aef<\/span><br \/>\n        session<span class=\"token punctuation\">.<\/span><span class=\"token function\">getOpenSessions<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">forEach<\/span><span class=\"token punctuation\">(<\/span>s <span class=\"token operator\">-&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            s<span class=\"token punctuation\">.<\/span><span class=\"token function\">getAsyncRemote<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">sendText<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u670d\u52a1\u5668\u56de\u590d: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> message<span class=\"token punctuation\">)<\/span><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><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;OnClose<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">onClose<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Session<\/span> session<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u8fde\u63a5\u5173\u95ed: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> session<span class=\"token punctuation\">.<\/span><span class=\"token function\">getId<\/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>    <span class=\"token annotation punctuation\">&#064;OnError<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">onError<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Throwable<\/span> error<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        error<span class=\"token punctuation\">.<\/span><span class=\"token function\">printStackTrace<\/span><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<h4>WebSocket\u901a\u8fc7Flash\u5b9e\u73b0<\/h4>\n<p>\u5728HTML5 WebSocket\u666e\u53ca\u524d&#xff0c;Flash Socket\u662f\u4e00\u79cd\u5e38\u7528\u7684\u5907\u9009\u65b9\u6848\u3002<\/p>\n<p><span class=\"token comment\">\/\/ \u4f7f\u7528web-socket-js\u5e93\u4f5c\u4e3aFlash\u56de\u9000<\/span><br \/>\n<span class=\"token operator\">&lt;<\/span>script src<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;swfobject.js&#034;<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>script<span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token operator\">&lt;<\/span>script src<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;web_socket.js&#034;<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>script<span class=\"token operator\">&gt;<\/span><\/p>\n<p><span class=\"token operator\">&lt;<\/span>script<span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u5e93\u4f1a\u81ea\u52a8\u68c0\u6d4b\u6d4f\u89c8\u5668\u662f\u5426\u652f\u6301WebSocket<\/span><br \/>\n<span class=\"token comment\">\/\/ \u4e0d\u652f\u6301\u5219\u4f7f\u7528Flash Socket<\/span><br \/>\n<span class=\"token keyword\">var<\/span> ws <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">WebSocket<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;ws:\/\/example.com:8080&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>script<span class=\"token operator\">&gt;<\/span><\/p>\n<h4>\u4f18\u7f3a\u70b9<\/h4>\n<ul>\n<li>\u2705 \u5168\u53cc\u5de5\u901a\u4fe1&#xff0c;\u53cc\u5411\u5b9e\u65f6<\/li>\n<li>\u2705 \u4e8c\u8fdb\u5236\u6570\u636e\u652f\u6301<\/li>\n<li>\u2705 \u5934\u90e8\u5f00\u9500\u5c0f&#xff08;\u8fde\u63a5\u5efa\u7acb\u540e&#xff09;<\/li>\n<li>\u274c \u534f\u8bae\u76f8\u5bf9\u590d\u6742<\/li>\n<li>\u274c \u9700\u8981\u4e13\u95e8\u7684\u670d\u52a1\u5668\u652f\u6301<\/li>\n<li>\u274c \u90e8\u5206\u9632\u706b\u5899\u53ef\u80fd\u62e6\u622a\u975e80\/443\u7aef\u53e3\u7684WebSocket<\/li>\n<\/ul>\n<h3>6. \u57fa\u4e8eIframe\u7684\u63a8\u9001&#xff08;Comet&#xff09;<\/h3>\n<p>\u5229\u7528\u9690\u85cf\u7684Iframe\u5b9e\u73b0\u957f\u8fde\u63a5\u63a8\u9001\u3002<\/p>\n<h4>\u539f\u7406<\/h4>\n<p>\u5728\u9875\u9762\u4e2d\u5d4c\u5165\u4e00\u4e2a\u9690\u85cf\u7684Iframe&#xff0c;\u5176src\u6307\u5411\u4e00\u4e2a\u957f\u8fde\u63a5\u8bf7\u6c42\u3002\u670d\u52a1\u5668\u5206\u5757\u8fd4\u56de&lt;script&gt;\u6807\u7b7e&#xff0c;\u6d4f\u89c8\u5668\u63a5\u6536\u5230\u540e\u4f1a\u7acb\u5373\u6267\u884c\u3002<\/p>\n<p><span class=\"token comment\">&lt;!&#8211; \u5ba2\u6237\u7aef\u9875\u9762 &#8211;&gt;<\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>iframe<\/span> <span class=\"token attr-name\">id<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>hidden-frame<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">src<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\/api\/iframe-stream<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token special-attr\"><span class=\"token attr-name\">style<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span><span class=\"token value css language-css\"><span class=\"token property\">display<\/span><span class=\"token punctuation\">:<\/span>none<span class=\"token punctuation\">;<\/span><\/span><span class=\"token punctuation\">&#034;<\/span><\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>iframe<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\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 comment\">\/\/ \u5168\u5c40\u56de\u8c03\u51fd\u6570<\/span><br \/>\n<span class=\"token keyword\">function<\/span> <span class=\"token function\">handlePush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">data<\/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\u63a8\u9001:&#039;<\/span><span class=\"token punctuation\">,<\/span> data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<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<p><span class=\"token comment\">\/\/ \u670d\u52a1\u7aef\u4ee3\u7801<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;GetMapping<\/span><span class=\"token punctuation\">(<\/span>value <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\/api\/iframe-stream&#034;<\/span><span class=\"token punctuation\">,<\/span> produces <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;text\/html&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">iframeStream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">HttpServletResponse<\/span> response<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    response<span class=\"token punctuation\">.<\/span><span class=\"token function\">setContentType<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;text\/html;charset&#061;UTF-8&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token class-name\">PrintWriter<\/span> writer <span class=\"token operator\">&#061;<\/span> response<span class=\"token punctuation\">.<\/span><span class=\"token function\">getWriter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u6301\u7eed\u8f93\u51fascript\u6807\u7b7e<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        writer<span class=\"token punctuation\">.<\/span><span class=\"token function\">write<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&lt;script&gt;parent.handlePush(&#039;\u6d88\u606f&#034;<\/span> <span class=\"token operator\">&#043;<\/span> i <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034;&#039;);&lt;\/script&gt;\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        writer<span class=\"token punctuation\">.<\/span><span class=\"token function\">flush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token class-name\">Thread<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">sleep<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">InterruptedException<\/span> e<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<h4>\u4f18\u7f3a\u70b9<\/h4>\n<ul>\n<li>\u2705 \u517c\u5bb9\u6240\u6709\u6d4f\u89c8\u5668<\/li>\n<li>\u2705 \u5b9e\u73b0\u7b80\u5355<\/li>\n<li>\u274c \u6d4f\u89c8\u5668\u8fdb\u5ea6\u6761\u4e00\u76f4\u5904\u4e8e\u52a0\u8f7d\u72b6\u6001&#xff0c;\u5f71\u54cd\u7528\u6237\u4f53\u9a8c<\/li>\n<li>\u274c \u9875\u9762\u6807\u9898\u4f1a\u663e\u793a\u201c\u6b63\u5728\u52a0\u8f7d\u2026\u201d<\/li>\n<\/ul>\n<h3>7. \u57fa\u4e8eScript\u6807\u7b7e\u7684\u957f\u8fde\u63a5&#xff08;JSONP Polling&#xff09;<\/h3>\n<p>\u5229\u7528&lt;script&gt;\u6807\u7b7e\u53ef\u4ee5\u8de8\u57df\u7684\u7279\u6027\u5b9e\u73b0\u8de8\u57df\u63a8\u9001\u3002<\/p>\n<h4>\u539f\u7406<\/h4>\n<p>\u52a8\u6001\u521b\u5efa&lt;script&gt;\u6807\u7b7e\u8bf7\u6c42\u670d\u52a1\u5668&#xff0c;\u670d\u52a1\u5668\u4fdd\u6301\u8fde\u63a5&#xff0c;\u8fd4\u56deJavaScript\u4ee3\u7801&#xff08;\u8c03\u7528\u56de\u8c03\u51fd\u6570&#xff09;\u3002\u6807\u7b7e\u52a0\u8f7d\u5b8c\u6210\u540e\u89e6\u53d1\u4e0b\u4e00\u6b21\u8bf7\u6c42\u3002<\/p>\n<p><span class=\"token comment\">\/\/ \u5ba2\u6237\u7aef\u5b9e\u73b0<\/span><br \/>\n<span class=\"token keyword\">function<\/span> <span class=\"token function\">jsonpLongPoll<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">var<\/span> script <span class=\"token operator\">&#061;<\/span> document<span class=\"token punctuation\">.<\/span><span class=\"token function\">createElement<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;script&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    script<span class=\"token punctuation\">.<\/span>src <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;http:\/\/api.example.com\/jsonp-push?callback&#061;handlePush&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u8d85\u65f6\u5904\u7406<\/span><br \/>\n    <span class=\"token keyword\">var<\/span> timeout <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">setTimeout<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        script<span class=\"token punctuation\">.<\/span><span class=\"token function\">remove<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">jsonpLongPoll<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u91cd\u65b0\u8fde\u63a5<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">30000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    window<span class=\"token punctuation\">.<\/span><span class=\"token function-variable function\">handlePush<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">data<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">clearTimeout<\/span><span class=\"token punctuation\">(<\/span>timeout<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">processData<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        script<span class=\"token punctuation\">.<\/span><span class=\"token function\">remove<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">jsonpLongPoll<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u7acb\u5373\u53d1\u8d77\u4e0b\u4e00\u6b21\u8bf7\u6c42<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    document<span class=\"token punctuation\">.<\/span>head<span class=\"token punctuation\">.<\/span><span class=\"token function\">appendChild<\/span><span class=\"token punctuation\">(<\/span>script<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token function\">jsonpLongPoll<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h4>\u4f18\u7f3a\u70b9<\/h4>\n<ul>\n<li>\u2705 \u652f\u6301\u8de8\u57df&#xff08;\u8fd9\u662f\u6700\u5927\u4f18\u52bf&#xff09;<\/li>\n<li>\u2705 \u517c\u5bb9\u6240\u6709\u6d4f\u89c8\u5668<\/li>\n<li>\u274c \u53ea\u80fd\u53d1\u9001GET\u8bf7\u6c42<\/li>\n<li>\u274c \u9519\u8bef\u5904\u7406\u56f0\u96be&#xff08;script\u52a0\u8f7d\u5931\u8d25\u4e0d\u6613\u6355\u83b7&#xff09;<\/li>\n<li>\u274c \u4f9d\u8d56\u5168\u5c40\u56de\u8c03\u51fd\u6570<\/li>\n<\/ul>\n<h3>8. \u6280\u672f\u5bf9\u6bd4\u603b\u7ed3<\/h3>\n<table>\n<tr>\u6280\u672f\u65b9\u6848\u65b9\u5411\u8de8\u57df\u652f\u6301\u5b9e\u65f6\u6027\u6d4f\u89c8\u5668\u517c\u5bb9\u5b9e\u73b0\u590d\u6742\u5ea6<\/tr>\n<tbody>\n<tr>\n<td align=\"left\">\u77ed\u8f6e\u8be2<\/td>\n<td align=\"left\">\u5355\u5411<\/td>\n<td align=\"left\">\u652f\u6301<\/td>\n<td align=\"left\">\u4f4e<\/td>\n<td align=\"left\">\u6700\u597d<\/td>\n<td align=\"left\">\u7b80\u5355<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">\u957f\u8f6e\u8be2<\/td>\n<td align=\"left\">\u5355\u5411<\/td>\n<td align=\"left\">\u652f\u6301<\/td>\n<td align=\"left\">\u4e2d<\/td>\n<td align=\"left\">\u6700\u597d<\/td>\n<td align=\"left\">\u4e2d\u7b49<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">XHR Multipart<\/td>\n<td align=\"left\">\u5355\u5411<\/td>\n<td align=\"left\">\u652f\u6301<\/td>\n<td align=\"left\">\u9ad8<\/td>\n<td align=\"left\">\u5dee<\/td>\n<td align=\"left\">\u590d\u6742<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">SSE<\/td>\n<td align=\"left\">\u5355\u5411<\/td>\n<td align=\"left\">\u4e0d\u652f\u6301<\/td>\n<td align=\"left\">\u9ad8<\/td>\n<td align=\"left\">\u8f83\u597d<\/td>\n<td align=\"left\">\u7b80\u5355<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">WebSocket<\/td>\n<td align=\"left\">\u53cc\u5411<\/td>\n<td align=\"left\">\u4e0d\u652f\u6301<\/td>\n<td align=\"left\">\u6700\u9ad8<\/td>\n<td align=\"left\">\u8f83\u597d<\/td>\n<td align=\"left\">\u4e2d\u7b49<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Iframe<\/td>\n<td align=\"left\">\u5355\u5411<\/td>\n<td align=\"left\">\u4e0d\u652f\u6301<\/td>\n<td align=\"left\">\u9ad8<\/td>\n<td align=\"left\">\u8f83\u597d<\/td>\n<td align=\"left\">\u4e2d\u7b49<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Script\u6807\u7b7e<\/td>\n<td align=\"left\">\u5355\u5411<\/td>\n<td align=\"left\">\u652f\u6301<\/td>\n<td align=\"left\">\u9ad8<\/td>\n<td align=\"left\">\u6700\u597d<\/td>\n<td align=\"left\">\u4e2d\u7b49<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>9. \u9009\u578b\u5efa\u8bae<\/h3>\n<h4>\u6839\u636e\u4e1a\u52a1\u573a\u666f\u9009\u62e9<\/h4>\n<li>\u7b80\u5355\u901a\u77e5\u3001\u6d88\u606f\u63a8\u9001&#xff1a;\u4f18\u5148\u9009\u62e9SSE&#xff0c;\u5b9e\u73b0\u7b80\u5355&#xff0c;\u529f\u80fd\u8db3\u591f<\/li>\n<li>\u9700\u8981\u53cc\u5411\u901a\u4fe1&#xff08;\u5982\u804a\u5929\u3001\u6e38\u620f&#xff09;&#xff1a;\u9009\u62e9WebSocket<\/li>\n<li>\u5fc5\u987b\u517c\u5bb9\u53e4\u8001\u6d4f\u89c8\u5668&#xff08;IE8\/9&#xff09;&#xff1a;\u4f7f\u7528\u957f\u8f6e\u8be2\u4f5c\u4e3a\u964d\u7ea7\u65b9\u6848<\/li>\n<li>\u9700\u8981\u8de8\u57df\u63a8\u9001&#xff1a;Script\u6807\u7b7e\u957f\u8f6e\u8be2\u6216CORS&#043;\u957f\u8f6e\u8be2<\/li>\n<li>\u4f01\u4e1a\u5185\u90e8\u7cfb\u7edf&#xff0c;\u6d4f\u89c8\u5668\u73af\u5883\u53ef\u63a7&#xff1a;\u5927\u80c6\u4f7f\u7528WebSocket\u6216SSE<\/li>\n<h4>\u73b0\u4ee3\u5e94\u7528\u67b6\u6784\u63a8\u8350<\/h4>\n<p>\u5728\u5b9e\u9645\u9879\u76ee\u4e2d&#xff0c;\u901a\u5e38\u91c7\u7528\u591a\u65b9\u6848\u7ec4\u5408&#xff1a;<\/p>\n<ul>\n<li>\u9996\u9009WebSocket&#xff0c;\u5b9e\u73b0\u771f\u6b63\u7684\u53cc\u5411\u5b9e\u65f6\u901a\u4fe1<\/li>\n<li>\u964d\u7ea7\u65b9\u6848\u4f7f\u7528SSE&#xff08;\u5982\u679c\u53ea\u9700\u8981\u670d\u52a1\u5668\u63a8\u9001&#xff09;<\/li>\n<li>\u6700\u540e\u964d\u7ea7\u4f7f\u7528\u957f\u8f6e\u8be2&#xff08;\u517c\u5bb9\u6240\u6709\u73af\u5883&#xff09;<\/li>\n<\/ul>\n<p><span class=\"token comment\">\/\/ \u5c01\u88c5\u4e00\u4e2a\u81ea\u52a8\u964d\u7ea7\u7684\u63a8\u9001\u5ba2\u6237\u7aef\u793a\u4f8b<\/span><br \/>\n<span class=\"token keyword\">function<\/span> <span class=\"token function\">createPushClient<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">options<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u68c0\u6d4bWebSocket\u652f\u6301<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>window<span class=\"token punctuation\">.<\/span>WebSocket<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">WebSocketClient<\/span><span class=\"token punctuation\">(<\/span>options<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u68c0\u6d4bSSE\u652f\u6301<\/span><br \/>\n    <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>window<span class=\"token punctuation\">.<\/span>EventSource<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">SSEClient<\/span><span class=\"token punctuation\">(<\/span>options<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u56de\u9000\u5230\u957f\u8f6e\u8be2<\/span><br \/>\n    <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">LongPollClient<\/span><span class=\"token punctuation\">(<\/span>options<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<h3>\u7ed3\u8bed<\/h3>\n<p>\u4ece\u65e9\u671f\u7684Iframe\u3001\u957f\u8f6e\u8be2&#xff0c;\u5230\u73b0\u4ee3\u6807\u51c6\u7684SSE\u548cWebSocket&#xff0c;\u670d\u52a1\u5668\u63a8\u9001\u6280\u672f\u7ecf\u5386\u4e86\u4e0d\u65ad\u6f14\u8fdb\u7684\u5386\u7a0b\u3002\u7406\u89e3\u8fd9\u4e9b\u6280\u672f\u7684\u539f\u7406\u548c\u9002\u7528\u573a\u666f&#xff0c;\u80fd\u591f\u5e2e\u52a9\u6211\u4eec\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\u505a\u51fa\u66f4\u5408\u7406\u7684\u6280\u672f\u9009\u578b&#xff0c;\u4e3a\u7528\u6237\u63d0\u4f9b\u66f4\u597d\u7684\u5b9e\u65f6\u4f53\u9a8c\u3002<\/p>\n<p>\u968f\u7740HTTP\/2\u3001HTTP\/3\u7684\u666e\u53ca&#xff0c;\u672a\u6765\u7684\u63a8\u9001\u6280\u672f\u53ef\u80fd\u4f1a\u6709\u65b0\u7684\u53d1\u5c55&#xff0c;\u4f46\u7406\u89e3\u8fd9\u4e9b\u57fa\u7840\u539f\u7406\u4f9d\u7136\u662f\u6bcf\u4e2aWeb\u5f00\u53d1\u8005\u7684\u5fc5\u4fee\u8bfe\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/07\/20260724172139-6a639f23d43be.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<table width=\"100%\">\n<tbody>\n<tr>\n<td width=\"50%\">\n<p>     <font face=\"STCAIYUN\" color=\"red\" size=\"4\">&#x1f33a;The End&#x1f33a;\u70b9\u70b9\u5173\u6ce8&#xff0c;\u6536\u85cf\u4e0d\u8ff7\u8def&#x1f33a;<\/font>\n     <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>\u670d\u52a1\u5668\u4e3b\u52a8\u63a8\u9001\u6570\u636e\u5230\u5ba2\u6237\u7aef\u7684\u51e0\u79cd\u65b9\u5f0f\u8be6\u89e3\u5f15\u8a001. \u77ed\u8f6e\u8be2&#xff08;Short Polling&#xff09;\u539f\u7406\u4f18\u7f3a\u70b92. \u957f\u8f6e\u8be2&#xff08;Long Polling&#xff09;\u539f\u7406\u4f18\u7f3a\u70b93. XHR Multipart Streaming\u539f\u7406\u4f18\u7f3a\u70b94. Server-Sent Events (SSE)\u539f\u7406\u4f18\u7f3a\u70b95. WebSocket\u539f\u7406WebSocket\u901a\u8fc7Flash\u5b9e\u73b0\u4f18\u7f3a\u70b96. \u57fa\u4e8eIframe\u7684\u63a8\u9001&#xff08;Comet&#xff09;\u539f\u7406\u4f18\u7f3a\u70b97<\/p>\n","protected":false},"author":2,"featured_media":81369,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[9109,43,44],"topic":[],"class_list":["post-81370","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-9109","tag-43","tag-44"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u670d\u52a1\u5668\u4e3b\u52a8\u63a8\u9001\u6570\u636e\u5230\u5ba2\u6237\u7aef\u7684\u51e0\u79cd\u65b9\u5f0f\u8be6\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/81370.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u670d\u52a1\u5668\u4e3b\u52a8\u63a8\u9001\u6570\u636e\u5230\u5ba2\u6237\u7aef\u7684\u51e0\u79cd\u65b9\u5f0f\u8be6\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u670d\u52a1\u5668\u4e3b\u52a8\u63a8\u9001\u6570\u636e\u5230\u5ba2\u6237\u7aef\u7684\u51e0\u79cd\u65b9\u5f0f\u8be6\u89e3\u5f15\u8a001. \u77ed\u8f6e\u8be2&#xff08;Short Polling&#xff09;\u539f\u7406\u4f18\u7f3a\u70b92. \u957f\u8f6e\u8be2&#xff08;Long Polling&#xff09;\u539f\u7406\u4f18\u7f3a\u70b93. XHR Multipart Streaming\u539f\u7406\u4f18\u7f3a\u70b94. Server-Sent Events (SSE)\u539f\u7406\u4f18\u7f3a\u70b95. WebSocket\u539f\u7406WebSocket\u901a\u8fc7Flash\u5b9e\u73b0\u4f18\u7f3a\u70b96. \u57fa\u4e8eIframe\u7684\u63a8\u9001&#xff08;Comet&#xff09;\u539f\u7406\u4f18\u7f3a\u70b97\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/81370.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-24T17:21:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/07\/20260724172139-6a639f23d43be.png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/81370.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/81370.html\",\"name\":\"\u670d\u52a1\u5668\u4e3b\u52a8\u63a8\u9001\u6570\u636e\u5230\u5ba2\u6237\u7aef\u7684\u51e0\u79cd\u65b9\u5f0f\u8be6\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-07-24T17:21:40+00:00\",\"dateModified\":\"2026-07-24T17:21:40+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/81370.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/81370.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/81370.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u670d\u52a1\u5668\u4e3b\u52a8\u63a8\u9001\u6570\u636e\u5230\u5ba2\u6237\u7aef\u7684\u51e0\u79cd\u65b9\u5f0f\u8be6\u89e3\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u670d\u52a1\u5668\u4e3b\u52a8\u63a8\u9001\u6570\u636e\u5230\u5ba2\u6237\u7aef\u7684\u51e0\u79cd\u65b9\u5f0f\u8be6\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/81370.html","og_locale":"zh_CN","og_type":"article","og_title":"\u670d\u52a1\u5668\u4e3b\u52a8\u63a8\u9001\u6570\u636e\u5230\u5ba2\u6237\u7aef\u7684\u51e0\u79cd\u65b9\u5f0f\u8be6\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u670d\u52a1\u5668\u4e3b\u52a8\u63a8\u9001\u6570\u636e\u5230\u5ba2\u6237\u7aef\u7684\u51e0\u79cd\u65b9\u5f0f\u8be6\u89e3\u5f15\u8a001. \u77ed\u8f6e\u8be2&#xff08;Short Polling&#xff09;\u539f\u7406\u4f18\u7f3a\u70b92. \u957f\u8f6e\u8be2&#xff08;Long Polling&#xff09;\u539f\u7406\u4f18\u7f3a\u70b93. XHR Multipart Streaming\u539f\u7406\u4f18\u7f3a\u70b94. Server-Sent Events (SSE)\u539f\u7406\u4f18\u7f3a\u70b95. WebSocket\u539f\u7406WebSocket\u901a\u8fc7Flash\u5b9e\u73b0\u4f18\u7f3a\u70b96. \u57fa\u4e8eIframe\u7684\u63a8\u9001&#xff08;Comet&#xff09;\u539f\u7406\u4f18\u7f3a\u70b97","og_url":"https:\/\/www.wsisp.com\/helps\/81370.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-07-24T17:21:40+00:00","og_image":[{"url":"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/07\/20260724172139-6a639f23d43be.png"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"4 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/81370.html","url":"https:\/\/www.wsisp.com\/helps\/81370.html","name":"\u670d\u52a1\u5668\u4e3b\u52a8\u63a8\u9001\u6570\u636e\u5230\u5ba2\u6237\u7aef\u7684\u51e0\u79cd\u65b9\u5f0f\u8be6\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-07-24T17:21:40+00:00","dateModified":"2026-07-24T17:21:40+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/81370.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/81370.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/81370.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"\u670d\u52a1\u5668\u4e3b\u52a8\u63a8\u9001\u6570\u636e\u5230\u5ba2\u6237\u7aef\u7684\u51e0\u79cd\u65b9\u5f0f\u8be6\u89e3"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/81370","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=81370"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/81370\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media\/81369"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=81370"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=81370"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=81370"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=81370"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}