{"id":74636,"date":"2026-02-10T10:25:34","date_gmt":"2026-02-10T02:25:34","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/74636.html"},"modified":"2026-02-10T10:25:34","modified_gmt":"2026-02-10T02:25:34","slug":"%e7%94%a8%e4%b8%80%e7%af%87%e6%96%87%e7%ab%a0%e5%b8%a6%e4%bd%a0%e6%90%9e%e6%87%82-webrtc-java-%e4%bf%a1%e4%bb%a4%e6%9c%8d%e5%8a%a1%e5%99%a8-vue-%e5%ae%9e%e6%97%b6%e8%a7%86%e9%a2%91%e8%81%8a","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/74636.html","title":{"rendered":"\u7528\u4e00\u7bc7\u6587\u7ae0\u5e26\u4f60\u641e\u61c2 WebRTC + Java \u4fe1\u4ee4\u670d\u52a1\u5668 + Vue \u5b9e\u65f6\u89c6\u9891\u804a\u5929"},"content":{"rendered":"<h3><\/h3>\n<p>\u5f88\u591a\u540c\u5b66\u7528\u8fc7\u5fae\u4fe1\u3001QQ \u89c6\u9891\u804a\u5929&#xff0c;\u4f46\u4e00\u95ee\u5230\u5e95\u5c42\u600e\u4e48\u5b9e\u73b0&#xff0c;\u5341\u6709\u516b\u4e5d\u53ea\u4f1a\u8bf4\u4e00\u53e5&#xff1a;\u201c\u5e94\u8be5\u662f WebSocket \/ WebRTC \u5427&#xff1f;\u201d\u2014\u2014\u4f46\u662f&#xff1a;<\/p>\n<ul>\n<li>WebRTC \u5230\u5e95\u8d1f\u8d23\u4ec0\u4e48&#xff1f;<\/li>\n<li>WebSocket \/ Netty \u5728\u91cc\u9762\u5e72\u561b&#xff1f;<\/li>\n<li>STUN \/ ICE \/ SDP \u662f\u5565&#xff1f;\u4e3a\u4ec0\u4e48\u4e00\u4e0a\u6765\u5c31\u4e00\u5806\u540d\u8bcd&#xff1f;<\/li>\n<\/ul>\n<p>\u8fd9\u7bc7\u6587\u7ae0\u4f1a\u7528\u4e00\u5957\u5b8c\u6574\u7684\u5c0f\u9879\u76ee&#xff0c;\u4ece 0 \u5230 1 \u5e26\u4f60\u5b9e\u73b0\u4e00\u4e2a&#xff1a;<\/p>\n<p>\u57fa\u4e8e WebRTC &#043; Java&#xff08;SpringBoot &#043; Netty&#xff09;&#043; Vue \u7684\u70b9\u5bf9\u70b9\u89c6\u9891\u804a\u5929 Demo<\/p>\n<p>\u91cd\u70b9\u662f&#xff1a;<br \/>\n\u4e0d\u662f\u53ea\u7ed9\u4f60\u4e00\u5806\u4ee3\u7801&#xff0c;\u800c\u662f\u628a\u6bcf\u4e2a\u6982\u5ff5\u90fd\u8bb2\u6e05\u695a&#xff0c;\u8ba9\u5c0f\u767d\u4e5f\u80fd\u770b\u61c2\u3001\u6539\u5f97\u52a8\u3001\u4e3e\u4e00\u53cd\u4e09\u3002<\/p>\n<hr \/>\n<h3>\u4e00\u3001\u6574\u4f53\u67b6\u6784\u603b\u89c8&#xff1a;\u8c01\u8d1f\u8d23\u5e72\u4ec0\u4e48&#xff1f;<\/h3>\n<p>\u5148\u770b\u4e00\u5f20\u903b\u8f91\u56fe&#xff08;\u53ef\u4ee5\u8111\u8865\u6210 PPT&#xff09;&#xff1a;<\/p>\n<p>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502                  \u540e\u7aef&#xff08;Java&#xff09;               \u2502<br \/>\n\u2502                                            \u2502<br \/>\n\u2502  SpringBoot \u8d1f\u8d23&#xff1a;                          \u2502<br \/>\n\u2502    &#8211; \u542f\u52a8\u9879\u76ee\u3001\u6574\u5408 Netty\u3001\u7ba1\u7406 Bean         \u2502<br \/>\n\u2502                                            \u2502<br \/>\n\u2502  Netty WebSocket \u8d1f\u8d23&#xff1a;                     \u2502<br \/>\n\u2502    &#8211; \u7ba1\u7406 WebSocket \u957f\u8fde\u63a5                  \u2502<br \/>\n\u2502    &#8211; \u7ef4\u62a4 \u201c\u7528\u6237ID \u21d4 Channel\u201d \u6620\u5c04           \u2502<br \/>\n\u2502    &#8211; \u8f6c\u53d1\u4fe1\u4ee4&#xff1a;register \/ call \/ answer \/ ice \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/p>\n<p>                  \u25b2                 \u25b2<br \/>\n                  \u2502 WebSocket \u4fe1\u4ee4  \u2502<br \/>\n                  \u25bc                 \u25bc<\/p>\n<p>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510     \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502   \u524d\u7aef A&#xff08;\u6d4f\u89c8\u5668&#xff0c;Vue   \u2502     \u2502   \u524d\u7aef B&#xff08;\u6d4f\u89c8\u5668&#xff0c;Vue&#xff09; \u2502<br \/>\n\u2502   &#8211; \u91c7\u96c6\u672c\u5730\u97f3\u89c6\u9891      \u2502     \u2502   &#8211; \u91c7\u96c6\u672c\u5730\u97f3\u89c6\u9891       \u2502<br \/>\n\u2502   &#8211; WebRTC \u5efa\u7acb P2P    \u2502     \u2502   &#8211; WebRTC \u5efa\u7acb P2P     \u2502<br \/>\n\u2502   &#8211; \u901a\u8fc7 WebSocket \u53d1\u4fe1\u4ee4\u2502    \u2502  &#8211; \u901a\u8fc7 WebSocket \u53d1\u4fe1\u4ee4\u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518     \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/p>\n<p>           \u25b2                                   \u25b2<br \/>\n           \u2502 WebRTC P2P \u97f3\u89c6\u9891\u6d41&#xff08;\u771f\u6b63\u4f20\u8f93\u5a92\u4f53&#xff09; \u2502<br \/>\n           \u25bc                                   \u25bc<\/p>\n<p>\u4e00\u53e5\u8bdd\u6982\u62ec&#xff1a;<\/p>\n<ul>\n<li>WebRTC&#xff1a;\u6d4f\u89c8\u5668\u5185\u7f6e\u7684\u5b9e\u65f6\u97f3\u89c6\u9891\u5f15\u64ce&#xff0c;\u8d1f\u8d23\u91c7\u96c6 &#043; \u7f16\u7801 &#043; \u4f20\u8f93\u97f3\u89c6\u9891\u3002<\/li>\n<li>Netty &#043; WebSocket&#xff1a;\u8d1f\u8d23\u4fe1\u4ee4\u4ea4\u6362&#xff08;\u8c01\u7ed9\u8c01\u6253\u7535\u8bdd\u3001\u4f1a\u8bdd\u53c2\u6570\u3001\u7f51\u7edc\u5730\u5740&#xff09;\u3002<\/li>\n<li>SpringBoot&#xff1a;\u628a Netty \u96c6\u6210\u5728 Java \u9879\u76ee\u4e2d&#xff0c;\u63d0\u4f9b\u7edf\u4e00\u7684\u542f\u52a8\u5165\u53e3\u3002<\/li>\n<li>Vue \u524d\u7aef&#xff1a;\u63d0\u4f9b UI\u3001\u8c03\u7528 WebRTC API&#xff0c;\u5e76\u4e0e\u540e\u7aef WebSocket \u4ea4\u4e92\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>\u4e8c\u3001WebRTC \u5fc5\u5907\u6982\u5ff5\u626b\u76f2&#xff08;\u9762\u5411\u5c0f\u767d&#xff09;<\/h3>\n<h4>2.1 WebRTC \u662f\u4ec0\u4e48&#xff1f;<\/h4>\n<p>WebRTC&#xff08;Web Real-Time Communication&#xff09;&#xff1a;<br \/>\n\u6d4f\u89c8\u5668\u539f\u751f\u652f\u6301\u7684\u5b9e\u65f6\u97f3\u89c6\u9891\u901a\u4fe1\u6280\u672f&#xff0c;\u7279\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u65e0\u9700\u5b89\u88c5\u63d2\u4ef6 \/ \u5ba2\u6237\u7aef&#xff0c;\u76f4\u63a5\u5728\u6d4f\u89c8\u5668\u91cc\u7528 JS \u8c03\u7528\u3002<\/li>\n<li>\u53ef\u4ee5\u5b9e\u73b0&#xff1a;\u97f3\u89c6\u9891\u901a\u8bdd\u3001\u5c4f\u5e55\u5171\u4eab\u3001\u6587\u4ef6\u4f20\u8f93\u7b49\u3002<\/li>\n<li>\u91cd\u70b9&#xff1a;\u6d4f\u89c8\u5668\u4e4b\u95f4\u53ef\u4ee5\u70b9\u5bf9\u70b9&#xff08;P2P&#xff09;\u4f20\u8f93\u97f3\u89c6\u9891\u6570\u636e\u3002<\/li>\n<\/ul>\n<h4>2.2 \u4e3a\u4ec0\u4e48\u8fd8\u9700\u8981 WebSocket \/ \u4fe1\u4ee4\u670d\u52a1\u5668&#xff1f;<\/h4>\n<p>WebRTC \u53ea\u8d1f\u8d23\u5a92\u4f53\u901a\u9053&#xff0c;\u4f46\u5b83\u4e0d\u8d1f\u8d23&#xff1a;<\/p>\n<ul>\n<li>\u8c01\u7ed9\u8c01\u6253\u7535\u8bdd&#xff1f;<\/li>\n<li>\u6253\u7535\u8bdd\u65f6\u53cc\u65b9\u7528\u4ec0\u4e48\u97f3\u89c6\u9891\u53c2\u6570&#xff08;SDP&#xff09;&#xff1f;<\/li>\n<li>\u53cc\u65b9\u7684\u7f51\u7edc\u5730\u5740&#xff08;ICE \u5019\u9009&#xff09;\u600e\u4e48\u4e92\u76f8\u77e5\u9053&#xff1f;<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u201c\u64ae\u5408\u3001\u534f\u5546\u3001\u4ea4\u6362\u4fe1\u606f\u201d\u7684\u8fc7\u7a0b&#xff0c;\u5c31\u53eb\u505a \u201c\u4fe1\u4ee4&#xff08;Signaling&#xff09;\u201d\u3002<br \/>\n\u6211\u4eec\u901a\u5e38\u7528 WebSocket &#043; \u540e\u7aef\u670d\u52a1\u5668 \u6765\u505a\u4fe1\u4ee4\u901a\u9053\u3002<\/p>\n<p>\u53ef\u4ee5\u628a WebRTC \u60f3\u6210\u201c\u7535\u8bdd\u7ebf &#043; \u9ea6\u514b\u98ce &#043; \u6444\u50cf\u5934\u201d&#xff0c;<br \/>\nWebSocket\/Netty \u76f8\u5f53\u4e8e\u201c\u4e2d\u95f4\u7684\u7ea2\u5a18 &#043; \u524d\u53f0\u63a5\u7ebf\u5458\u201d\u3002<\/p>\n<h4>2.3 ICE \/ STUN \/ TURN \u662f\u4ec0\u4e48&#xff1f;<\/h4>\n<h5>2.3.1 NAT \u95ee\u9898&#xff1a;\u4e3a\u4ec0\u4e48\u4e24\u53f0\u7535\u8111\u627e\u4e0d\u5230\u5f7c\u6b64&#xff1f;<\/h5>\n<p>\u65e5\u5e38\u7f51\u7edc\u4e2d&#xff0c;\u7edd\u5927\u90e8\u5206\u8bbe\u5907\u4f7f\u7528\u7684\u90fd\u662f\u5185\u7f51 IP&#xff08;\u5982 192.168.x.x&#xff09;&#xff0c;\u5bf9\u5916\u901a\u8fc7\u8def\u7531\u5668\u5171\u4eab\u4e00\u4e2a\u516c\u7f51 IP\u3002<\/p>\n<p>\u8fd9\u5c31\u5bfc\u81f4\u4e00\u4e2a\u95ee\u9898&#xff1a;<\/p>\n<p>A \u548c B \u90fd\u5728\u5404\u81ea\u7684\u5185\u7f51\u91cc&#xff0c;\u5b83\u4eec\u53ea\u77e5\u9053\u81ea\u5df1\u7684\u5185\u7f51 IP&#xff0c;<br \/>\n\u4f46\u5bf9\u65b9\u7684\u5185\u7f51 IP \u5728\u81ea\u5df1\u7684\u7f51\u7edc\u8303\u56f4\u5916\u6839\u672c\u8bbf\u95ee\u4e0d\u5230\u3002<\/p>\n<p>\u5c31\u50cf&#xff1a;<\/p>\n<ul>\n<li>\u4f60\u77e5\u9053\u81ea\u5df1\u5728\u201c\u5c0f\u533a 1&#xff1a;1\u680b 101\u201d<\/li>\n<li>\u5bf9\u65b9\u5728\u201c\u5c0f\u533a 2&#xff1a;3\u680b 602\u201d<\/li>\n<li>\u4f46\u4f60\u53ea\u77e5\u9053\u201c101\u201d\u548c\u201c602\u201d&#xff0c;\u4e0d\u77e5\u9053\u4e24\u4e2a\u5c0f\u533a\u7684\u5177\u4f53\u5730\u5740\u548c\u5927\u95e8\u3002<\/li>\n<\/ul>\n<h5>2.3.2 STUN&#xff1a;\u5e2e\u4f60\u67e5\u201c\u4f60\u5728\u4e92\u8054\u7f51\u773c\u4e2d\u7684\u5730\u5740\u201d<\/h5>\n<p>STUN&#xff08;Session Traversal Utilities for NAT&#xff09; \u662f\u4e00\u4e2a\u7f51\u7edc\u670d\u52a1&#xff0c;\u5b83\u505a\u7684\u4e8b\u60c5\u5f88\u7b80\u5355&#xff1a;<\/p>\n<li>\u8bbe\u5907 A&#xff08;\u5728\u5185\u7f51&#xff09;\u7ed9 STUN \u670d\u52a1\u5668\u53d1\u8bf7\u6c42&#xff1a;\u201c\u4f60\u770b\u5230\u7684\u6211\u7684 IP &#043; \u7aef\u53e3\u662f\u4ec0\u4e48&#xff1f;\u201d<\/li>\n<li>STUN \u670d\u52a1\u5668\u8fd4\u56de&#xff1a;\u201c\u6211\u770b\u5230\u4f60\u7684\u516c\u7f51 IP \u662f X.X.X.X&#xff0c;\u7aef\u53e3\u662f YYY\u201d\u3002<\/li>\n<li>\u8bbe\u5907 A \u5c31\u77e5\u9053\u4e86\u201c\u5728\u4e92\u8054\u7f51\u773c\u4e2d\u7684\u81ea\u5df1\u201d\u7684\u5730\u5740\u3002<\/li>\n<p>\u540c\u7406&#xff0c;\u8bbe\u5907 B \u4e5f\u8fd9\u4e48\u5e72\u4e00\u904d\u3002<br \/>\n\u7136\u540e\u4e8c\u8005\u901a\u8fc7\u4fe1\u4ee4\u670d\u52a1\u5668\u4e92\u76f8\u4ea4\u6362\u8fd9\u4e2a\u201c\u516c\u7f51\u5730\u5740\u201d&#xff0c;\u5c31\u53ef\u4ee5\u5c1d\u8bd5\u70b9\u5bf9\u70b9\u6253\u6d1e\u901a\u4fe1\u3002<\/p>\n<h5>2.3.3 ICE&#xff1a;\u4e00\u6574\u5957\u201c\u8bd5\u63a2\u8fde\u63a5\u201d\u7684\u6846\u67b6<\/h5>\n<p>ICE&#xff08;Interactive Connectivity Establishment&#xff09; \u662f WebRTC \u4e2d\u7528\u4e8e NAT \u7a7f\u900f\u7684\u4e00\u4e2a\u6846\u67b6 \/ \u7b56\u7565\u96c6\u5408&#xff1a;<\/p>\n<ul>\n<li>\u5b83\u4f1a\u6536\u96c6\u5404\u79cd\u53ef\u80fd\u7684\u5730\u5740&#xff08;\u5019\u9009\u8005 Candidate&#xff09;&#xff1a;\n<ul>\n<li>\u672c\u5730\u5730\u5740&#xff08;\u5185\u7f51 IP&#xff09;<\/li>\n<li>\u901a\u8fc7 STUN \u83b7\u5f97\u7684\u670d\u52a1\u5668\u53cd\u5c04\u5730\u5740&#xff08;\u516c\u7f51 IP &#043; \u7aef\u53e3&#xff09;<\/li>\n<li>\u901a\u8fc7 TURN \u4e2d\u7ee7\u83b7\u5f97\u7684\u4e2d\u8f6c\u5730\u5740&#xff08;\u5982\u679c\u6709 TURN&#xff09;<\/li>\n<\/ul>\n<\/li>\n<li>\u7136\u540e\u53cc\u65b9\u4e92\u76f8\u4ea4\u6362\u8fd9\u4e9b\u5730\u5740&#xff0c;\u4e00\u8fb9\u8bd5\u4e00\u8fb9\u8fde&#xff0c;\u770b\u54ea\u6761\u8def\u5f84\u80fd\u6253\u901a\u3002<\/li>\n<\/ul>\n<p>\u5728\u4ee3\u7801\u91cc&#xff0c;\u4f60\u901a\u5e38\u4f1a\u770b\u5230&#xff1a;<\/p>\n<p><span class=\"token keyword\">const<\/span> iceServers <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token literal-property property\">iceServers<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">urls<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#039;stun:stun.l.google.com:19302&#039;<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">urls<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#039;stun:stun.qq.com:3478&#039;<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">urls<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#039;stun:stun.aliyun.com:3478&#039;<\/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>\u8fd9\u91cc\u7684 iceServers \u5c31\u662f\u4f20\u7ed9 RTCPeerConnection \u7684\u914d\u7f6e&#xff0c;\u544a\u8bc9\u5b83&#xff1a;<\/p>\n<p>\u201c\u4f60\u505a ICE \u7a7f\u900f\u65f6&#xff0c;\u53ef\u4ee5\u53bb\u8fd9\u4e9b STUN \u670d\u52a1\u5668\u95ee\u8def\u3002\u201d<\/p>\n<h5>2.3.4 TURN&#xff1a;\u515c\u5e95\u65b9\u6848&#xff08;\u672c\u6559\u7a0b\u6682\u4e0d\u5b9e\u73b0&#xff09;<\/h5>\n<p>\u5f53\u5404\u79cd NAT \u592a\u6076\u5fc3\u3001P2P \u6253\u6d1e\u5931\u8d25\u65f6&#xff0c;\u5c31\u53ea\u80fd\u9000\u800c\u6c42\u5176\u6b21&#xff0c;\u8ba9\u5a92\u4f53\u6d41\u901a\u8fc7 TURN \u670d\u52a1\u5668\u4e2d\u8f6c\u3002<\/p>\n<ul>\n<li>\u597d\u5904&#xff1a;\u51e0\u4e4e\u80fd\u4fdd\u8bc1\u8fde\u901a\u3002<\/li>\n<li>\u7f3a\u70b9&#xff1a;\u5e26\u5bbd\u538b\u529b\u5de8\u5927&#xff0c;\u6210\u672c\u9ad8&#xff0c;\u4e00\u822c\u7528\u4e8e\u5546\u4e1a\u4ea7\u54c1\u3002<\/li>\n<\/ul>\n<p>\u672c\u6559\u7a0b\u7684 Demo \u4e3a\u4e86\u7b80\u5355&#xff0c;\u53ea\u4f7f\u7528 STUN&#xff0c;\u4e0d\u6d89\u53ca TURN\u3002<\/p>\n<hr \/>\n<h3>\u4e09\u3001\u6574\u4f53\u6388\u8bfe\/\u5b66\u4e60\u6d41\u7a0b\u8bbe\u8ba1&#xff08;\u7ed9\u8001\u5e08\u4e5f\u7ed9\u81ea\u5b66\u8005&#xff09;<\/h3>\n<h4>3.1 \u6b65\u9aa4\u603b\u89c8<\/h4>\n<li>\u540e\u7aef&#xff1a;\u57fa\u4e8e SpringBoot &#043; Netty \u642d\u5efa WebSocket \u4fe1\u4ee4\u670d\u52a1\u5668\u3002<\/li>\n<li>\u524d\u7aef&#xff1a;\u57fa\u4e8e Vue 3 \u5b9e\u73b0&#xff1a;\n<ul>\n<li>WebSocket \u8fde\u63a5\u4e0e\u4fe1\u4ee4\u53d1\u9001<\/li>\n<li>WebRTC RTCPeerConnection \u5efa\u7acb P2P<\/li>\n<li>\u672c\u5730 \/ \u8fdc\u7a0b\u89c6\u9891\u5c55\u793a &#043; \u6302\u65ad\u529f\u80fd<\/li>\n<\/ul>\n<\/li>\n<li>\u8054\u8c03&#xff1a;\u672c\u673a\u5f00 2 \u4e2a\u6d4f\u89c8\u5668\u7a97\u53e3&#xff08;\u6216\u4e0d\u540c\u6d4f\u89c8\u5668&#xff09;&#xff0c;\u5b9e\u73b0 A \u2194 B \u89c6\u9891\u901a\u8bdd\u3002<\/li>\n<p>\u63a5\u4e0b\u6765\u6211\u4eec\u6309\u8fd9\u4e2a\u987a\u5e8f&#xff0c;\u4e00\u6b65\u4e00\u6b65\u5b9e\u73b0\u3002<\/p>\n<hr \/>\n<h3>\u56db\u3001\u540e\u7aef\u670d\u52a1\u7aef\u5f00\u53d1&#xff08;\u4e00&#xff09;&#xff1a;SpringBoot \u9879\u76ee\u4e0e\u4f9d\u8d56\u914d\u7f6e<\/h3>\n<h4>4.1 Maven \u4f9d\u8d56&#xff08;pom.xml \u5173\u952e\u7247\u6bb5&#xff09;<\/h4>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>dependencies<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token comment\">&lt;!&#8211; SpringBoot \u6838\u5fc3&#xff1a;\u63d0\u4f9b\u57fa\u7840\u5bb9\u5668\u3001\u81ea\u52a8\u914d\u7f6e\u7b49 &#8211;&gt;<\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>org.springframework.boot<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>spring-boot-starter<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>    <span class=\"token comment\">&lt;!&#8211; Netty&#xff1a;\u9ad8\u6027\u80fd\u7f51\u7edc\u901a\u4fe1\u6846\u67b6&#xff0c;\u7528\u6765\u5b9e\u73b0 WebSocket \u670d\u52a1\u5668 &#8211;&gt;<\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>io.netty<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>netty-all<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>4.1.94.Final<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>    <span class=\"token comment\">&lt;!&#8211; FastJSON&#xff1a;JSON \u5e8f\u5217\u5316\/\u53cd\u5e8f\u5217\u5316&#xff0c;\u7528\u6765\u89e3\u6790\/\u6784\u9020\u4fe1\u4ee4\u6d88\u606f &#8211;&gt;<\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>com.alibaba<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>groupId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>fastjson<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>artifactId<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>2.0.25<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>version<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>dependency<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>dependencies<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u8bf4\u660e&#xff1a;<\/p>\n<ul>\n<li>SpringBoot \u8d1f\u8d23\u9879\u76ee\u7684\u6574\u4f53\u542f\u52a8\u4e0e Bean \u7ba1\u7406\u3002<\/li>\n<li>Netty \u7528\u6765\u5f00\u542f\u4e00\u4e2a WebSocket \u670d\u52a1\u7aef&#xff0c;\u76d1\u542c\u5982 ws:\/\/localhost:8081\/ws\u3002<\/li>\n<li>FastJSON \u7528\u6765\u628a\u524d\u7aef\u53d1\u6765\u7684 JSON \u6587\u672c\u8f6c\u6210 Java \u5bf9\u8c61 Message&#xff0c;\u4e5f\u80fd\u628a\u5bf9\u8c61\u8f6c\u56de JSON\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>\u4e94\u3001\u540e\u7aef\u5f00\u53d1&#xff08;\u4e8c&#xff09;&#xff1a;\u4fe1\u4ee4\u6d88\u606f\u5b9e\u4f53\u7c7b Message<\/h3>\n<h4>5.1 \u4e3a\u4ec0\u4e48\u9700\u8981\u6d88\u606f\u5b9e\u4f53\u7c7b&#xff1f;<\/h4>\n<p>\u5728 WebRTC \u4fe1\u4ee4\u4ea4\u4e92\u4e2d&#xff0c;\u6211\u4eec\u9700\u8981\u4f20\u9012\u7684\u4fe1\u606f\u5305\u62ec&#xff1a;<\/p>\n<ul>\n<li>\u6d88\u606f\u7c7b\u578b&#xff1a;register&#xff08;\u6ce8\u518c&#xff09;\u3001call&#xff08;\u547c\u53eb&#xff09;\u3001answer&#xff08;\u5e94\u7b54&#xff09;\u3001ice&#xff08;\u5019\u9009&#xff09;<\/li>\n<li>\u53d1\u9001\u65b9 ID&#xff1a;from<\/li>\n<li>\u63a5\u6536\u65b9 ID&#xff1a;to<\/li>\n<li>\u5177\u4f53\u5185\u5bb9&#xff1a;data&#xff08;\u6bd4\u5982 SDP\u3001ICE \u5019\u9009\u7684 JSON \u5b57\u7b26\u4e32&#xff09;<\/li>\n<\/ul>\n<p>\u7528\u4e00\u4e2a\u7edf\u4e00\u7684\u5b9e\u4f53\u7c7b\u5c01\u88c5&#xff0c;\u53ef\u4ee5\u8ba9\u670d\u52a1\u7aef\u903b\u8f91\u66f4\u6e05\u6670\u3002<\/p>\n<h4>5.2 Message.java \u793a\u4f8b\u5b9e\u73b0&#xff08;\u5e26\u8be6\u7ec6\u6ce8\u91ca&#xff09;<\/h4>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>qcby<span class=\"token punctuation\">.<\/span>springboot<span class=\"token punctuation\">.<\/span>entity<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * \u4fe1\u4ee4\u6d88\u606f\u5b9e\u4f53\u7c7b<br \/>\n *<br \/>\n * \u5728 WebRTC &#043; WebSocket \u7684\u4fe1\u4ee4\u4ea4\u4e92\u4e2d&#xff0c;\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u4f20\u9012\u7684<br \/>\n * \u5b9e\u9645\u4e0a\u90fd\u662f JSON \u6587\u672c\u3002\u4e3a\u4e86\u5728\u540e\u7aef\u65b9\u4fbf\u5904\u7406&#xff0c;\u6211\u4eec\u628a\u8fd9\u7c7b\u6d88\u606f\u7edf\u4e00<br \/>\n * \u5c01\u88c5\u6210\u4e00\u4e2a Java \u5bf9\u8c61\u3002<br \/>\n *<br \/>\n * \u4e00\u4e2a\u5178\u578b\u7684\u4fe1\u4ee4\u6d88\u606f JSON \u53ef\u80fd\u957f\u8fd9\u6837&#xff1a;<br \/>\n *<br \/>\n * {<br \/>\n *   &#034;type&#034;: &#034;call&#034;,<br \/>\n *   &#034;from&#034;: &#034;user1&#034;,<br \/>\n *   &#034;to&#034;:   &#034;user2&#034;,<br \/>\n *   &#034;data&#034;: &#034;{&#8230;SDP \u6216 ICE JSON&#8230;}&#034;<br \/>\n * }<br \/>\n *<br \/>\n * \u5176\u4e2d&#xff1a;<br \/>\n * &#8211; type&#xff1a;\u6d88\u606f\u7c7b\u578b&#xff08;register \/ call \/ answer \/ ice &#xff09;<br \/>\n * &#8211; from&#xff1a;\u53d1\u9001\u65b9\u7528\u6237 ID<br \/>\n * &#8211; to&#xff1a;\u63a5\u6536\u65b9\u7528\u6237 ID<br \/>\n * &#8211; data&#xff1a;\u5177\u4f53\u7684\u6570\u636e\u5185\u5bb9&#xff08;\u5b57\u7b26\u4e32\u5f62\u5f0f&#xff0c;\u4e00\u822c\u4e5f\u662f JSON&#xff09;<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Message<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u6d88\u606f\u7c7b\u578b&#xff1a;<br \/>\n     * &#8211; register&#xff1a;\u5ba2\u6237\u7aef\u6ce8\u518c\u81ea\u5df1\u7684 userId<br \/>\n     * &#8211; call    &#xff1a;\u53d1\u8d77\u547c\u53eb&#xff0c;\u643a\u5e26 SDP offer<br \/>\n     * &#8211; answer  &#xff1a;\u5e94\u7b54\u547c\u53eb&#xff0c;\u643a\u5e26 SDP answer<br \/>\n     * &#8211; ice     &#xff1a;\u4f20\u9012 ICE \u5019\u9009\u4fe1\u606f<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">String<\/span> type<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u53d1\u9001\u65b9\u7528\u6237 ID<br \/>\n     *<br \/>\n     * \u7531\u524d\u7aef\u5728\u53d1\u9001\u6d88\u606f\u65f6\u6307\u5b9a&#xff0c;\u4f8b\u5982 user1\u3001user2\u3002<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">String<\/span> from<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u63a5\u6536\u65b9\u7528\u6237 ID<br \/>\n     *<br \/>\n     * \u670d\u52a1\u7aef\u4f1a\u6839\u636e\u8be5\u5b57\u6bb5\u627e\u5230\u76ee\u6807 Channel&#xff0c;\u7136\u540e\u8fdb\u884c\u6d88\u606f\u8f6c\u53d1\u3002<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">String<\/span> <span class=\"token keyword\">to<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u6d88\u606f\u6570\u636e\u4f53<br \/>\n     *<br \/>\n     * \u5bf9\u4e8e\u4e0d\u540c\u7c7b\u578b\u7684\u6d88\u606f&#xff0c;\u8be5\u5b57\u6bb5\u542b\u4e49\u4e0d\u540c&#xff1a;<br \/>\n     * &#8211; register&#xff1a;\u901a\u5e38\u4e3a\u7a7a\u5b57\u7b26\u4e32<br \/>\n     * &#8211; call    &#xff1a;\u5b58\u653e SDP offer \u5b57\u7b26\u4e32&#xff08;JSON \u5e8f\u5217\u5316\u540e\u7684\u5bf9\u8c61&#xff09;<br \/>\n     * &#8211; answer  &#xff1a;\u5b58\u653e SDP answer \u5b57\u7b26\u4e32<br \/>\n     * &#8211; ice     &#xff1a;\u5b58\u653e ICECandidate \u7684 JSON \u5b57\u7b26\u4e32<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">String<\/span> data<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ &#061;&#061;&#061;&#061;&#061;&#061;&#061; Getter \/ Setter&#xff08;\u7701\u7565 IDE \u81ea\u52a8\u751f\u6210\u6ce8\u91ca&#xff09; &#061;&#061;&#061;&#061;&#061;&#061;&#061;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">String<\/span> <span class=\"token function\">getType<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> type<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">setType<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> type<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>type <span class=\"token operator\">&#061;<\/span> type<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">String<\/span> <span class=\"token function\">getFrom<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> from<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">setFrom<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> from<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>from <span class=\"token operator\">&#061;<\/span> from<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">String<\/span> <span class=\"token function\">getTo<\/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 keyword\">to<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">setTo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> <span class=\"token keyword\">to<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">to<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">to<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">String<\/span> <span class=\"token function\">getData<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> data<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">setData<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> data<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>data <span class=\"token operator\">&#061;<\/span> data<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">String<\/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 keyword\">return<\/span> <span class=\"token string\">&#034;Message{&#034;<\/span> <span class=\"token operator\">&#043;<\/span><br \/>\n                <span class=\"token string\">&#034;type&#061;&#039;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> type <span class=\"token operator\">&#043;<\/span> <span class=\"token char\">&#039;\\\\&#039;&#039;<\/span> <span class=\"token operator\">&#043;<\/span><br \/>\n                <span class=\"token string\">&#034;, from&#061;&#039;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> from <span class=\"token operator\">&#043;<\/span> <span class=\"token char\">&#039;\\\\&#039;&#039;<\/span> <span class=\"token operator\">&#043;<\/span><br \/>\n                <span class=\"token string\">&#034;, to&#061;&#039;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token keyword\">to<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token char\">&#039;\\\\&#039;&#039;<\/span> <span class=\"token operator\">&#043;<\/span><br \/>\n                <span class=\"token string\">&#034;, data&#061;&#039;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> data <span class=\"token operator\">&#043;<\/span> <span class=\"token char\">&#039;\\\\&#039;&#039;<\/span> <span class=\"token operator\">&#043;<\/span><br \/>\n                <span class=\"token char\">&#039;}&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h3>\u516d\u3001\u540e\u7aef\u5f00\u53d1&#xff08;\u4e09&#xff09;&#xff1a;Netty WebSocket \u5904\u7406\u5668 WebSocketHandler<\/h3>\n<h4>6.1 \u804c\u8d23\u8bf4\u660e<\/h4>\n<p>WebSocketHandler \u662f\u6574\u4e2a\u670d\u52a1\u7aef\u7684\u6838\u5fc3\u7c7b&#xff0c;\u4e3b\u8981\u8d1f\u8d23&#xff1a;<\/p>\n<ul>\n<li>\u7ba1\u7406\u7528\u6237 WebSocket \u8fde\u63a5&#xff08;\u4e00\u4e2a\u7528\u6237\u5bf9\u5e94\u4e00\u4e2a Netty Channel&#xff09;\u3002<\/li>\n<li>\u63a5\u6536\u524d\u7aef\u53d1\u6765\u7684\u4fe1\u4ee4\u6d88\u606f&#xff08;JSON \u6587\u672c&#xff09;\u3002<\/li>\n<li>\u6309\u6d88\u606f\u7c7b\u578b\u8fdb\u884c\u5206\u53d1\u5904\u7406&#xff1a;\n<ul>\n<li>register&#xff1a;\u8bb0\u5f55\u7528\u6237 ID \u4e0e Channel \u7684\u6620\u5c04\u3002<\/li>\n<li>call \/ answer \/ ice&#xff1a;\u6839\u636e to \u5b57\u6bb5\u627e\u5230\u76ee\u6807\u7528\u6237 Channel&#xff0c;\u8f6c\u53d1\u6d88\u606f\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5904\u7406\u8fde\u63a5\u65ad\u5f00 \/ \u5f02\u5e38\u7b49\u60c5\u51b5\u3002<\/li>\n<\/ul>\n<h4>6.2 \u6838\u5fc3\u4ee3\u7801\u5b9e\u73b0&#xff08;\u9644\u8be6\u7ec6\u6ce8\u91ca&#xff09;<\/h4>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>qcby<span class=\"token punctuation\">.<\/span>springboot<span class=\"token punctuation\">.<\/span>handler<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>alibaba<span class=\"token punctuation\">.<\/span>fastjson<span class=\"token punctuation\">.<\/span><\/span>JSON<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>qcby<span class=\"token punctuation\">.<\/span>springboot<span class=\"token punctuation\">.<\/span>entity<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Message<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>channel<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Channel<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>channel<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ChannelHandler<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>channel<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ChannelHandlerContext<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>channel<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">SimpleChannelInboundHandler<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>handler<span class=\"token punctuation\">.<\/span>codec<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span>websocketx<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">TextWebSocketFrame<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>context<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Configuration<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>util<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Map<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>util<span class=\"token punctuation\">.<\/span>concurrent<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ConcurrentHashMap<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * WebSocketHandler<br \/>\n *<br \/>\n * \u4f5c\u7528&#xff1a;\u5904\u7406\u57fa\u4e8e WebSocket \u7684\u6587\u672c\u6d88\u606f&#xff08;TextWebSocketFrame&#xff09;&#xff0c;<br \/>\n * \u914d\u5408 SpringBoot \u4e0e Netty \u5b9e\u73b0\u4e00\u4e2a\u7b80\u5355\u7684\u201c\u4fe1\u4ee4\u670d\u52a1\u5668\u201d\u3002<br \/>\n *<br \/>\n * \u5173\u952e\u70b9&#xff1a;<br \/>\n * &#8211; \u4f7f\u7528 ConcurrentHashMap \u5b58\u50a8\u7528\u6237 ID \u4e0e Channel \u7684\u6620\u5c04\u5173\u7cfb\u3002<br \/>\n * &#8211; \u6839\u636e\u6d88\u606f\u7c7b\u578b\u8fdb\u884c\u4e0d\u540c\u7684\u4e1a\u52a1\u5904\u7406\u3002<br \/>\n *\/<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Configuration<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;ChannelHandler.Sharable<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">WebSocketHandler<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">SimpleChannelInboundHandler<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">TextWebSocketFrame<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u7528\u6237 ID \u5230 Channel \u7684\u5168\u5c40\u6620\u5c04\u8868<br \/>\n     *<br \/>\n     * key   &#xff1a;String \u7c7b\u578b\u7684\u7528\u6237 ID&#xff08;\u5982 &#034;user1&#034;&#xff09;<br \/>\n     * value &#xff1a;\u8be5\u7528\u6237\u5bf9\u5e94\u7684 Netty Channel&#xff08;\u4e00\u4e2a WebSocket \u8fde\u63a5&#xff09;<br \/>\n     *<br \/>\n     * \u4f7f\u7528 ConcurrentHashMap \u4fdd\u8bc1\u591a\u7ebf\u7a0b\u573a\u666f\u4e0b\u7684\u7ebf\u7a0b\u5b89\u5168\u3002<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">ConcurrentHashMap<\/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\">Channel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> USER_CHANNEL_MAP <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\">\/**<br \/>\n     * \u5f53\u4e0e\u5ba2\u6237\u7aef\u5efa\u7acb\u8fde\u63a5\u65f6\u89e6\u53d1<br \/>\n     *<br \/>\n     * \u6ce8\u610f&#xff1a;\u6b64\u65f6\u5ba2\u6237\u7aef\u8fd8\u672a\u53d1\u9001 register \u6d88\u606f&#xff0c;\u6211\u4eec\u53ea\u77e5\u9053\u6709\u4e00\u4e2a\u65b0\u8fde\u63a5&#xff0c;<br \/>\n     * \u4f46\u6682\u65f6\u4e0d\u77e5\u9053\u5b83\u5bf9\u5e94\u7684 userId\u3002<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">channelActive<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ChannelHandlerContext<\/span> ctx<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/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;\u4e0e\u5ba2\u6237\u7aef\u5efa\u7acb\u8fde\u63a5&#xff0c;\u901a\u9053\u5f00\u542f&#xff1a;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> ctx<span class=\"token punctuation\">.<\/span><span class=\"token function\">channel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">id<\/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 comment\">\/**<br \/>\n     * \u5904\u7406\u63a5\u6536\u5230\u7684\u6587\u672c\u6d88\u606f&#xff08;\u6838\u5fc3\u903b\u8f91&#xff09;<br \/>\n     *<br \/>\n     * &#064;param ctx \u4e0a\u4e0b\u6587\u5bf9\u8c61&#xff0c;\u5305\u542b Channel\u3001Pipeline \u7b49\u4fe1\u606f<br \/>\n     * &#064;param msg \u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6587\u672c\u5e27&#xff08;TextWebSocketFrame&#xff09;<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">channelRead0<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ChannelHandlerContext<\/span> ctx<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">TextWebSocketFrame<\/span> msg<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ 1. \u83b7\u53d6\u6587\u672c\u6d88\u606f\u5185\u5bb9&#xff08;JSON \u5b57\u7b26\u4e32&#xff09;<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> text <span class=\"token operator\">&#061;<\/span> msg<span class=\"token punctuation\">.<\/span><span class=\"token function\">text<\/span><span class=\"token punctuation\">(<\/span><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\u539f\u59cb\u6d88\u606f\u6587\u672c&#xff1a;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> text<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ 2. \u53cd\u5e8f\u5217\u5316\u4e3a Message \u5bf9\u8c61<\/span><br \/>\n        <span class=\"token class-name\">Message<\/span> message <span class=\"token operator\">&#061;<\/span> JSON<span class=\"token punctuation\">.<\/span><span class=\"token function\">parseObject<\/span><span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Message<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><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;\u89e3\u6790\u540e\u7684 Message \u5bf9\u8c61&#xff1a;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> message<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ 3. \u6839\u636e\u6d88\u606f\u7c7b\u578b\u8fdb\u884c\u5904\u7406<\/span><br \/>\n        <span class=\"token keyword\">switch<\/span> <span class=\"token punctuation\">(<\/span>message<span class=\"token punctuation\">.<\/span><span class=\"token function\">getType<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">case<\/span> <span class=\"token string\">&#034;register&#034;<\/span><span class=\"token operator\">:<\/span><br \/>\n                <span class=\"token comment\">\/\/ \u6ce8\u518c\u6d88\u606f&#xff1a;\u5c06\u7528\u6237 ID \u4e0e\u5f53\u524d Channel \u7ed1\u5b9a<\/span><br \/>\n                <span class=\"token function\">handleRegister<\/span><span class=\"token punctuation\">(<\/span>message<span class=\"token punctuation\">,<\/span> ctx<span class=\"token punctuation\">.<\/span><span class=\"token function\">channel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">case<\/span> <span class=\"token string\">&#034;call&#034;<\/span><span class=\"token operator\">:<\/span><br \/>\n            <span class=\"token keyword\">case<\/span> <span class=\"token string\">&#034;answer&#034;<\/span><span class=\"token operator\">:<\/span><br \/>\n            <span class=\"token keyword\">case<\/span> <span class=\"token string\">&#034;ice&#034;<\/span><span class=\"token operator\">:<\/span><br \/>\n                <span class=\"token comment\">\/\/ \u547c\u53eb \/ \u5e94\u7b54 \/ ICE \u5019\u9009&#xff1a;\u9700\u8981\u8f6c\u53d1\u7ed9\u6307\u5b9a\u63a5\u6536\u65b9<\/span><br \/>\n                <span class=\"token function\">handleForward<\/span><span class=\"token punctuation\">(<\/span>message<span class=\"token punctuation\">,<\/span> text<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">default<\/span><span class=\"token operator\">:<\/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;\u672a\u77e5\u6d88\u606f\u7c7b\u578b&#xff1a;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> message<span class=\"token punctuation\">.<\/span><span class=\"token function\">getType<\/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><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u5904\u7406\u7528\u6237\u6ce8\u518c\u903b\u8f91<br \/>\n     *<br \/>\n     * &#064;param message \u5305\u542b from \u5b57\u6bb5\u7684\u6ce8\u518c\u6d88\u606f<br \/>\n     * &#064;param channel \u5f53\u524d\u7528\u6237\u7684 Channel<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">handleRegister<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Message<\/span> message<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Channel<\/span> channel<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> userId <span class=\"token operator\">&#061;<\/span> message<span class=\"token punctuation\">.<\/span><span class=\"token function\">getFrom<\/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>userId <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">||<\/span> userId<span class=\"token punctuation\">.<\/span><span class=\"token function\">trim<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isEmpty<\/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 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;\u6ce8\u518c\u5931\u8d25&#xff1a;userId \u4e3a\u7a7a&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u5c06 userId \u4e0e Channel \u653e\u5165\u6620\u5c04\u8868<\/span><br \/>\n        USER_CHANNEL_MAP<span class=\"token punctuation\">.<\/span><span class=\"token function\">put<\/span><span class=\"token punctuation\">(<\/span>userId<span class=\"token punctuation\">,<\/span> channel<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;\u7528\u6237 &#034;<\/span> <span class=\"token operator\">&#043;<\/span> userId <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034; \u6ce8\u518c\u6210\u529f&#xff0c;ChannelId&#061;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> channel<span class=\"token punctuation\">.<\/span><span class=\"token function\">id<\/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 comment\">\/**<br \/>\n     * \u5c06\u6d88\u606f\u8f6c\u53d1\u7ed9\u63a5\u6536\u65b9\u7528\u6237<br \/>\n     *<br \/>\n     * &#064;param message \u89e3\u6790\u540e\u7684 Message \u5bf9\u8c61<br \/>\n     * &#064;param rawText \u539f\u59cb JSON \u6587\u672c&#xff08;\u76f4\u63a5\u8f6c\u53d1\u7ed9\u5bf9\u65b9&#xff09;<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">handleForward<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Message<\/span> message<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> rawText<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> targetUserId <span class=\"token operator\">&#061;<\/span> message<span class=\"token punctuation\">.<\/span><span class=\"token function\">getTo<\/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>targetUserId <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">||<\/span> targetUserId<span class=\"token punctuation\">.<\/span><span class=\"token function\">trim<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isEmpty<\/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 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;\u8f6c\u53d1\u5931\u8d25&#xff1a;\u76ee\u6807\u7528\u6237 ID \u4e3a\u7a7a&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token class-name\">Channel<\/span> targetChannel <span class=\"token operator\">&#061;<\/span> USER_CHANNEL_MAP<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>targetUserId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>targetChannel <span class=\"token operator\">!&#061;<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">&amp;&amp;<\/span> targetChannel<span class=\"token punctuation\">.<\/span><span class=\"token function\">isActive<\/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 comment\">\/\/ \u901a\u8fc7\u5bf9\u65b9\u7684 Channel \u53d1\u9001\u6d88\u606f<\/span><br \/>\n            targetChannel<span class=\"token punctuation\">.<\/span><span class=\"token function\">writeAndFlush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">TextWebSocketFrame<\/span><span class=\"token punctuation\">(<\/span>rawText<span class=\"token punctuation\">)<\/span><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;\u5df2\u5c06\u6d88\u606f\u8f6c\u53d1\u7ed9\u7528\u6237&#xff1a;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> targetUserId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/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;\u7528\u6237 &#034;<\/span> <span class=\"token operator\">&#043;<\/span> targetUserId <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034; \u4e0d\u5728\u7ebf\u6216 Channel \u4e0d\u53ef\u7528&#034;<\/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>    <span class=\"token comment\">\/**<br \/>\n     * \u5904\u7406\u8fde\u63a5\u65ad\u5f00\u4e8b\u4ef6<br \/>\n     *<br \/>\n     * \u6ce8\u610f&#xff1a;\u8fd9\u91cc\u6211\u4eec\u7b80\u5355\u5730\u6253\u5370\u65e5\u5fd7&#xff0c;\u66f4\u5b8c\u5584\u7684\u505a\u6cd5\u662f&#xff1a;<br \/>\n     * &#8211; \u4ece USER_CHANNEL_MAP \u4e2d\u79fb\u9664\u5bf9\u5e94\u7684 userId<br \/>\n     *   &#xff08;\u53ef\u4ee5\u53cd\u5411\u6839\u636e Channel \u627e\u5230 userId&#xff09;<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">channelInactive<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ChannelHandlerContext<\/span> ctx<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/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;\u4e0e\u5ba2\u6237\u7aef\u65ad\u5f00\u8fde\u63a5&#xff0c;\u901a\u9053\u5173\u95ed&#xff1a;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> ctx<span class=\"token punctuation\">.<\/span><span class=\"token function\">channel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">id<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u4ece\u6620\u5c04\u8868\u4e2d\u79fb\u9664\u5bf9\u5e94\u7684 Channel<\/span><br \/>\n        USER_CHANNEL_MAP<span class=\"token punctuation\">.<\/span><span class=\"token function\">entrySet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">removeIf<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                entry <span class=\"token operator\">-&gt;<\/span> entry<span class=\"token punctuation\">.<\/span><span class=\"token function\">getValue<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">id<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">equals<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">.<\/span><span class=\"token function\">channel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">id<\/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><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u5904\u7406\u5f02\u5e38\u60c5\u51b5<br \/>\n     *<br \/>\n     * \u5e38\u89c1\u5f02\u5e38&#xff1a;<br \/>\n     * &#8211; \u7f51\u7edc\u4e2d\u65ad<br \/>\n     * &#8211; \u5ba2\u6237\u7aef\u5f3a\u5236\u5173\u95ed<br \/>\n     * &#8211; \u89e3\u7801\u9519\u8bef\u7b49<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">exceptionCaught<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ChannelHandlerContext<\/span> ctx<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Throwable<\/span> cause<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/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\u5f02\u5e38&#xff1a;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> cause<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><\/p>\n<p>        <span class=\"token comment\">\/\/ \u51fa\u73b0\u5f02\u5e38\u65f6&#xff0c;\u6e05\u7406\u6620\u5c04\u8868\u4e2d\u7684 Channel<\/span><br \/>\n        USER_CHANNEL_MAP<span class=\"token punctuation\">.<\/span><span class=\"token function\">entrySet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">removeIf<\/span><span class=\"token punctuation\">(<\/span>entry <span class=\"token operator\">-&gt;<\/span> entry<span class=\"token punctuation\">.<\/span><span class=\"token function\">getValue<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> ctx<span class=\"token punctuation\">.<\/span><span class=\"token function\">channel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u5173\u95ed\u8fde\u63a5<\/span><br \/>\n        ctx<span class=\"token punctuation\">.<\/span><span class=\"token function\">close<\/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<hr \/>\n<h3>\u4e03\u3001\u540e\u7aef\u5f00\u53d1&#xff08;\u56db&#xff09;&#xff1a;Netty WebSocket \u670d\u52a1\u542f\u52a8\u7c7b<\/h3>\n<h4>7.1 \u8bbe\u8ba1\u76ee\u6807<\/h4>\n<ul>\n<li>\u5728 SpringBoot \u9879\u76ee\u542f\u52a8\u65f6&#xff0c;\u81ea\u52a8\u542f\u52a8\u4e00\u4e2a Netty WebSocket \u670d\u52a1\u5668\u3002<\/li>\n<li>\u76d1\u542c\u7aef\u53e3&#xff08;\u5982 8004&#xff09;&#xff0c;\u5bf9\u5916\u63d0\u4f9b ws:\/\/localhost:8004\/ws\u3002<\/li>\n<li>\u914d\u7f6e Netty \u7684 ChannelPipeline&#xff1a;\n<ul>\n<li>HTTP \u7f16\u89e3\u7801<\/li>\n<li>WebSocket \u534f\u8bae\u5904\u7406<\/li>\n<li>\u81ea\u5b9a\u4e49 WebSocketHandler<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>7.2 \u6838\u5fc3\u4ee3\u7801\u5b9e\u73b0<\/h4>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>qcby<span class=\"token punctuation\">.<\/span>springboot<span class=\"token punctuation\">.<\/span>commun<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>qcby<span class=\"token punctuation\">.<\/span>springboot<span class=\"token punctuation\">.<\/span>handler<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">WebSocketHandler<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>bootstrap<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ServerBootstrap<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>channel<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ChannelFuture<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>channel<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ChannelInitializer<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>channel<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ChannelOption<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>channel<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">EventLoopGroup<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>channel<span class=\"token punctuation\">.<\/span>nio<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">NioEventLoopGroup<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>channel<span class=\"token punctuation\">.<\/span>socket<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">SocketChannel<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>channel<span class=\"token punctuation\">.<\/span>socket<span class=\"token punctuation\">.<\/span>nio<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">NioServerSocketChannel<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>handler<span class=\"token punctuation\">.<\/span>codec<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpObjectAggregator<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>handler<span class=\"token punctuation\">.<\/span>codec<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HttpServerCodec<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>handler<span class=\"token punctuation\">.<\/span>codec<span class=\"token punctuation\">.<\/span>http<span class=\"token punctuation\">.<\/span>websocketx<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">WebSocketServerProtocolHandler<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">io<span class=\"token punctuation\">.<\/span>netty<span class=\"token punctuation\">.<\/span>handler<span class=\"token punctuation\">.<\/span>stream<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">ChunkedWriteHandler<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>beans<span class=\"token punctuation\">.<\/span>factory<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Autowired<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>context<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Configuration<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * Netty WebSocket \u670d\u52a1\u7aef<br \/>\n *<br \/>\n * \u4e0e SpringBoot \u96c6\u6210\u7684\u65b9\u5f0f&#xff1a;<br \/>\n * &#8211; \u58f0\u660e\u4e3a &#064;Configuration&#xff0c;\u8ba9 Spring \u7ba1\u7406<br \/>\n * &#8211; \u5728 SpringBoot \u542f\u52a8\u540e&#xff0c;\u901a\u8fc7 CommandLineRunner \u8c03\u7528 start() \u65b9\u6cd5<br \/>\n *\/<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Configuration<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">NettyWebSocketServer<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u81ea\u5b9a\u4e49\u7684 WebSocketHandler&#xff0c;\u7531 Spring \u81ea\u52a8\u6ce8\u5165<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">WebSocketHandler<\/span> webSocketHandler<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u542f\u52a8 Netty WebSocket \u670d\u52a1\u5668<br \/>\n     *<br \/>\n     * &#064;throws Exception \u542f\u52a8\u5f02\u5e38<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">start<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ bossGroup&#xff1a;\u4e13\u95e8\u7528\u6765\u63a5\u6536\u5ba2\u6237\u7aef\u8fde\u63a5\u7684\u7ebf\u7a0b\u7ec4<\/span><br \/>\n        <span class=\"token class-name\">EventLoopGroup<\/span> bossGroup <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">NioEventLoopGroup<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/ workerGroup&#xff1a;\u5904\u7406\u5df2\u5efa\u7acb\u8fde\u63a5\u7684\u8bfb\u5199\u4e8b\u4ef6<\/span><br \/>\n        <span class=\"token class-name\">EventLoopGroup<\/span> workerGroup <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">NioEventLoopGroup<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\">ServerBootstrap<\/span> serverBootstrap <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ServerBootstrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            serverBootstrap<br \/>\n                    <span class=\"token comment\">\/\/ \u8bbe\u7f6e\u670d\u52a1\u7aef\u7684\u53c2\u6570&#xff0c;\u4f8b\u5982\u7b49\u5f85\u961f\u5217\u5927\u5c0f<\/span><br \/>\n                    <span class=\"token punctuation\">.<\/span><span class=\"token function\">option<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ChannelOption<\/span><span class=\"token punctuation\">.<\/span>SO_BACKLOG<span class=\"token punctuation\">,<\/span> <span class=\"token number\">1024<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                    <span class=\"token comment\">\/\/ \u7ed1\u5b9a\u4e24\u4e2a\u7ebf\u7a0b\u7ec4<\/span><br \/>\n                    <span class=\"token punctuation\">.<\/span><span class=\"token function\">group<\/span><span class=\"token punctuation\">(<\/span>bossGroup<span class=\"token punctuation\">,<\/span> workerGroup<span class=\"token punctuation\">)<\/span><br \/>\n                    <span class=\"token comment\">\/\/ \u6307\u5b9a\u4f7f\u7528 NIO \u6a21\u578b\u7684\u670d\u52a1\u7aef Channel<\/span><br \/>\n                    <span class=\"token punctuation\">.<\/span><span class=\"token function\">channel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">NioServerSocketChannel<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                    <span class=\"token comment\">\/\/ \u6307\u5b9a\u672c\u5730\u76d1\u542c\u7aef\u53e3<\/span><br \/>\n                    <span class=\"token punctuation\">.<\/span><span class=\"token function\">localAddress<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">8004<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                    <span class=\"token comment\">\/\/ \u5b50\u901a\u9053&#xff08;\u5ba2\u6237\u7aef\u8fde\u63a5&#xff09;\u521d\u59cb\u5316\u903b\u8f91<\/span><br \/>\n                    <span class=\"token punctuation\">.<\/span><span class=\"token function\">childHandler<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ChannelInitializer<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">SocketChannel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                        <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n                        <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">initChannel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">SocketChannel<\/span> ch<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                            <span class=\"token comment\">\/\/ WebSocket \u57fa\u4e8e HTTP \u534f\u8bae&#xff0c;\u56e0\u6b64\u5148\u6dfb\u52a0 HTTP \u7f16\u89e3\u7801\u5668<\/span><br \/>\n                            ch<span class=\"token punctuation\">.<\/span><span class=\"token function\">pipeline<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">addLast<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">HttpServerCodec<\/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 comment\">\/\/ \u652f\u6301\u5927\u6570\u636e\u6d41\u7684\u5199\u5165<\/span><br \/>\n                            ch<span class=\"token punctuation\">.<\/span><span class=\"token function\">pipeline<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">addLast<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ChunkedWriteHandler<\/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 comment\">\/\/ \u805a\u5408 HTTP \u6d88\u606f&#xff0c;\u65b9\u4fbf\u5904\u7406\u5b8c\u6574\u8bf7\u6c42<\/span><br \/>\n                            ch<span class=\"token punctuation\">.<\/span><span class=\"token function\">pipeline<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">addLast<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">HttpObjectAggregator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">8192<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                            <span class=\"token comment\">\/\/ WebSocket \u534f\u8bae\u5904\u7406\u5668&#xff1a;<\/span><br \/>\n                            <span class=\"token comment\">\/\/ &#8211; \u8def\u5f84\u4e3a \/ws<\/span><br \/>\n                            <span class=\"token comment\">\/\/ &#8211; \u652f\u6301 WebSocket \u5347\u7ea7\u63e1\u624b<\/span><br \/>\n                            ch<span class=\"token punctuation\">.<\/span><span class=\"token function\">pipeline<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">addLast<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">WebSocketServerProtocolHandler<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/ws&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;WebSocket&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">65536<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                            <span class=\"token comment\">\/\/ \u6700\u540e\u6dfb\u52a0\u6211\u4eec\u81ea\u5df1\u7684\u4e1a\u52a1\u5904\u7406\u5668<\/span><br \/>\n                            ch<span class=\"token punctuation\">.<\/span><span class=\"token function\">pipeline<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">addLast<\/span><span class=\"token punctuation\">(<\/span>webSocketHandler<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><\/p>\n<p>            <span class=\"token comment\">\/\/ \u5f02\u6b65\u7ed1\u5b9a\u7aef\u53e3&#xff0c;sync() \u4f1a\u963b\u585e\u76f4\u5230\u7ed1\u5b9a\u5b8c\u6210<\/span><br \/>\n            <span class=\"token class-name\">ChannelFuture<\/span> channelFuture <span class=\"token operator\">&#061;<\/span> serverBootstrap<span class=\"token punctuation\">.<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">sync<\/span><span class=\"token punctuation\">(<\/span><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;Netty WebSocket \u670d\u52a1\u5668\u542f\u52a8\u6210\u529f&#xff0c;\u76d1\u542c\u7aef\u53e3&#xff1a;8004&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>            <span class=\"token comment\">\/\/ \u5173\u95ed\u901a\u9053&#xff08;\u4f1a\u963b\u585e&#xff0c;\u76f4\u5230\u670d\u52a1\u5668\u901a\u9053\u5173\u95ed&#xff09;<\/span><br \/>\n            channelFuture<span class=\"token punctuation\">.<\/span><span class=\"token function\">channel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">closeFuture<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">sync<\/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\">finally<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u5173\u95ed\u7ebf\u7a0b\u7ec4&#xff0c;\u91ca\u653e\u8d44\u6e90<\/span><br \/>\n            workerGroup<span class=\"token punctuation\">.<\/span><span class=\"token function\">shutdownGracefully<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">sync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            bossGroup<span class=\"token punctuation\">.<\/span><span class=\"token function\">shutdownGracefully<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">sync<\/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><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h3>\u516b\u3001\u540e\u7aef\u5f00\u53d1&#xff08;\u4e94&#xff09;&#xff1a;SpringBoot \u542f\u52a8\u7c7b\u96c6\u6210 Netty<\/h3>\n<h4>8.1 \u901a\u8fc7 CommandLineRunner \u542f\u52a8 Netty<\/h4>\n<p>SpringBoot \u63d0\u4f9b\u4e86 CommandLineRunner \u63a5\u53e3&#xff0c;\u5f53\u5e94\u7528\u542f\u52a8\u5b8c\u6210\u540e&#xff0c;\u4f1a\u81ea\u52a8\u8c03\u7528\u5176\u4e2d\u7684 run() \u65b9\u6cd5&#xff0c;\u975e\u5e38\u9002\u5408\u6211\u4eec\u5728\u5176\u4e2d\u542f\u52a8 Netty\u3002<\/p>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>qcby<span class=\"token punctuation\">.<\/span>springboot<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>qcby<span class=\"token punctuation\">.<\/span>springboot<span class=\"token punctuation\">.<\/span>commun<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">NettyWebSocketServer<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>mybatis<span class=\"token punctuation\">.<\/span>spring<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">MapperScan<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>beans<span class=\"token punctuation\">.<\/span>factory<span class=\"token punctuation\">.<\/span>annotation<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Autowired<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>boot<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">CommandLineRunner<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>boot<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">SpringApplication<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>springframework<span class=\"token punctuation\">.<\/span>boot<span class=\"token punctuation\">.<\/span>autoconfigure<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">SpringBootApplication<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * SpringBoot \u542f\u52a8\u7c7b<br \/>\n *<br \/>\n * \u8d1f\u8d23&#xff1a;<br \/>\n * &#8211; \u542f\u52a8 Spring \u5bb9\u5668<br \/>\n * &#8211; \u5728\u9879\u76ee\u542f\u52a8\u540e&#xff0c;\u81ea\u52a8\u542f\u52a8 Netty WebSocket \u670d\u52a1\u5668<br \/>\n *\/<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;SpringBootApplication<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;MapperScan<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;com.qcby.springboot.dao&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ \u5982\u679c\u6682\u65f6\u6ca1\u6709 MyBatis&#xff0c;\u53ef\u53bb\u6389<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Application<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">CommandLineRunner<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> args<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">SpringApplication<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">run<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Application<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">,<\/span> args<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u81ea\u52a8\u6ce8\u5165 NettyWebSocketServer<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">NettyWebSocketServer<\/span> nettyServer<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * SpringBoot \u542f\u52a8\u5b8c\u6210\u540e\u4f1a\u81ea\u52a8\u56de\u8c03\u8be5\u65b9\u6cd5<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">run<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span> args<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u542f\u52a8 Netty WebSocket \u670d\u52a1<\/span><br \/>\n        nettyServer<span class=\"token punctuation\">.<\/span><span class=\"token function\">start<\/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<p>\u5230\u6b64\u4e3a\u6b62&#xff0c;\u540e\u7aef\u4fe1\u4ee4\u670d\u52a1\u5668\u5c31\u642d\u597d\u4e86&#xff1a;<\/p>\n<ul>\n<li>\u542f\u52a8 SpringBoot \u9879\u76ee \u2192 \u81ea\u52a8\u542f\u52a8 Netty WebSocket\u3002<\/li>\n<li>\u524d\u7aef\u53ef\u4ee5\u901a\u8fc7&#xff1a;ws:\/\/localhost:8004\/ws \u5efa\u7acb\u8fde\u63a5\u3002<\/li>\n<li>\u4fe1\u4ee4\u6d88\u606f\u901a\u8fc7 JSON \u6587\u672c\u4f20\u8f93&#xff0c;\u7531 WebSocketHandler \u8f6c\u53d1\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>\u4e5d\u3001\u524d\u7aef&#xff1a;\u57fa\u4e8e Vue3 \u7684 WebRTC \u89c6\u9891\u804a\u5929\u9875\u9762<\/h3>\n<h4>9.1 \u9875\u9762\u7ed3\u6784\u4e0e\u6837\u5f0f&#xff08;template &#043; style&#xff09;<\/h4>\n<p>\u4e0b\u9762\u662f\u4e00\u4efd\u5b8c\u6574\u7684\u9875\u9762\u6a21\u677f&#xff0c;\u5df2\u7ecf\u5305\u542b&#xff1a;<\/p>\n<ul>\n<li>\u7528\u6237 ID \u8f93\u5165\u4e0e\u8fde\u63a5\u670d\u52a1\u5668\u6309\u94ae\u3002<\/li>\n<li>\u76ee\u6807\u7528\u6237 ID \u8f93\u5165\u4e0e\u201c\u53d1\u8d77\u89c6\u9891\u547c\u53eb\u201d\u6309\u94ae\u3002<\/li>\n<li>\u672c\u5730 \/ \u8fdc\u7a0b\u89c6\u9891\u5c55\u793a\u533a\u57df\u3002<\/li>\n<li>\u57fa\u672c\u7684 UI \u7f8e\u5316\u3002<\/li>\n<\/ul>\n<p>&lt;template&gt;<br \/>\n  &lt;div class&#061;&#034;container&#034;&gt;<br \/>\n    &lt;h2&gt;WebRTC \u89c6\u9891\u804a\u5929&lt;\/h2&gt;<\/p>\n<p>    &lt;!&#8211; 1. \u7528\u6237ID \u8f93\u5165\u4e0e\u8fde\u63a5\u670d\u52a1\u5668\u533a\u57df &#8211;&gt;<br \/>\n    &lt;div class&#061;&#034;input-group&#034;&gt;<br \/>\n      &lt;input<br \/>\n        v-model&#061;&#034;userId&#034;<br \/>\n        placeholder&#061;&#034;\u8f93\u5165\u4f60\u7684\u7528\u6237ID&#xff08;\u5982 user1&#xff09;&#034;<br \/>\n        type&#061;&#034;text&#034;<br \/>\n      \/&gt;<br \/>\n      &lt;button &#064;click&#061;&#034;connect&#034;&gt;\u8fde\u63a5\u670d\u52a1\u5668&lt;\/button&gt;<br \/>\n    &lt;\/div&gt;<\/p>\n<p>    &lt;!&#8211; 2. \u547c\u53eb\u529f\u80fd\u533a\u57df&#xff08;\u4ec5\u8fde\u63a5\u6210\u529f\u540e\u663e\u793a&#xff09; &#8211;&gt;<br \/>\n    &lt;div class&#061;&#034;input-group&#034; v-if&#061;&#034;socketConnected&#034;&gt;<br \/>\n      &lt;input<br \/>\n        v-model&#061;&#034;targetUserId&#034;<br \/>\n        placeholder&#061;&#034;\u8f93\u5165\u5bf9\u65b9\u7528\u6237ID&#xff08;\u5982 user2&#xff09;&#034;<br \/>\n        type&#061;&#034;text&#034;<br \/>\n      \/&gt;<br \/>\n      &lt;button &#064;click&#061;&#034;call&#034;&gt;\u53d1\u8d77\u89c6\u9891\u547c\u53eb&lt;\/button&gt;<br \/>\n    &lt;\/div&gt;<\/p>\n<p>    &lt;!&#8211; 3. \u6302\u65ad\u6309\u94ae&#xff08;\u4ec5\u5728\u6709\u8fdc\u7a0b\u6d41\u65f6\u663e\u793a&#xff0c;\u53ef\u6839\u636e\u4e1a\u52a1\u8c03\u6574\u6761\u4ef6&#xff09; &#8211;&gt;<br \/>\n    &lt;div class&#061;&#034;input-group&#034; v-if&#061;&#034;socketConnected&#034;&gt;<br \/>\n      &lt;button &#064;click&#061;&#034;hangUp&#034; style&#061;&#034;background: #e53935;&#034;&gt;\u6302\u65ad\u901a\u8bdd&lt;\/button&gt;<br \/>\n    &lt;\/div&gt;<\/p>\n<p>    &lt;!&#8211; 4. \u89c6\u9891\u5c55\u793a\u533a\u57df &#8211;&gt;<br \/>\n    &lt;div class&#061;&#034;video-container&#034;&gt;<br \/>\n      &lt;div class&#061;&#034;video-item&#034;&gt;<br \/>\n        &lt;p&gt;\u672c\u5730\u89c6\u9891&lt;\/p&gt;<br \/>\n        &lt;video ref&#061;&#034;localVideo&#034; autoplay muted&gt;&lt;\/video&gt;<br \/>\n      &lt;\/div&gt;<br \/>\n      &lt;div class&#061;&#034;video-item&#034;&gt;<br \/>\n        &lt;p&gt;\u8fdc\u7a0b\u89c6\u9891&lt;\/p&gt;<br \/>\n        &lt;video ref&#061;&#034;remoteVideo&#034; autoplay&gt;&lt;\/video&gt;<br \/>\n      &lt;\/div&gt;<br \/>\n    &lt;\/div&gt;<br \/>\n  &lt;\/div&gt;<br \/>\n&lt;\/template&gt;<\/p>\n<p>&lt;style scoped&gt;<br \/>\n.container {<br \/>\n  width: 900px;<br \/>\n  margin: 20px auto;<br \/>\n  text-align: center;<br \/>\n  font-family: &#034;Microsoft YaHei&#034;, sans-serif;<br \/>\n}<\/p>\n<p>.input-group {<br \/>\n  margin: 25px 0;<br \/>\n}<\/p>\n<p>input {<br \/>\n  padding: 10px 15px;<br \/>\n  width: 220px;<br \/>\n  margin-right: 10px;<br \/>\n  border: 1px solid #ddd;<br \/>\n  border-radius: 4px;<br \/>\n  font-size: 14px;<br \/>\n}<\/p>\n<p>button {<br \/>\n  padding: 10px 20px;<br \/>\n  background: #42b983;<br \/>\n  color: white;<br \/>\n  border: none;<br \/>\n  border-radius: 4px;<br \/>\n  cursor: pointer;<br \/>\n  font-size: 14px;<br \/>\n}<\/p>\n<p>button:hover {<br \/>\n  background: #359469;<br \/>\n}<\/p>\n<p>.video-container {<br \/>\n  display: flex;<br \/>\n  justify-content: center;<br \/>\n  gap: 30px;<br \/>\n  margin-top: 30px;<br \/>\n}<\/p>\n<p>.video-item {<br \/>\n  text-align: center;<br \/>\n}<\/p>\n<p>.video-item p {<br \/>\n  margin-bottom: 8px;<br \/>\n  font-size: 16px;<br \/>\n  color: #333;<br \/>\n}<\/p>\n<p>video {<br \/>\n  width: 400px;<br \/>\n  height: 300px;<br \/>\n  border: 1px solid #ccc;<br \/>\n  border-radius: 8px;<br \/>\n  background-color: #f5f5f5;<br \/>\n}<br \/>\n&lt;\/style&gt;<\/p>\n<hr \/>\n<h3>\u5341\u3001\u524d\u7aef\u811a\u672c&#xff08;script setup&#xff09;&#xff1a;WebSocket &#043; WebRTC \u5168\u6d41\u7a0b<\/h3>\n<h4>10.1 \u57fa\u7840\u53d8\u91cf\u4e0e\u4f9d\u8d56\u5bfc\u5165<\/h4>\n<p>&lt;script setup&gt;<br \/>\n\/\/ 1. \u4ece Vue \u4e2d\u5bfc\u5165\u54cd\u5e94\u5f0f API \u548c\u751f\u547d\u5468\u671f\u94a9\u5b50<br \/>\nimport { ref, onUnmounted } from &#039;vue&#039;;<\/p>\n<p>\/\/ 2. \u54cd\u5e94\u5f0f\u53d8\u91cf&#xff1a;\u4f1a\u5f71\u54cd\u9875\u9762\u663e\u793a<br \/>\nconst userId &#061; ref(&#039;&#039;);          \/\/ \u672c\u5730\u7528\u6237 ID&#xff08;\u5982 user1&#xff09;<br \/>\nconst targetUserId &#061; ref(&#039;&#039;);    \/\/ \u5bf9\u65b9\u7528\u6237 ID&#xff08;\u5982 user2&#xff09;<br \/>\nconst socketConnected &#061; ref(false); \/\/ WebSocket \u662f\u5426\u5df2\u8fde\u63a5<\/p>\n<p>\/\/ 3. \u89c6\u9891 DOM \u5f15\u7528&#xff0c;\u7528\u4e8e\u7ed1\u5b9a\u5a92\u4f53\u6d41<br \/>\nconst localVideo &#061; ref(null);    \/\/ \u672c\u5730\u89c6\u9891 &lt;video&gt;<br \/>\nconst remoteVideo &#061; ref(null);   \/\/ \u8fdc\u7a0b\u89c6\u9891 &lt;video&gt;<\/p>\n<p>\/\/ 4. \u666e\u901a\u53d8\u91cf&#xff1a;\u4ec5\u811a\u672c\u5185\u90e8\u4f7f\u7528&#xff0c;\u4e0d\u9700\u8981\u54cd\u5e94\u5f0f<br \/>\nlet socket &#061; null;               \/\/ WebSocket \u8fde\u63a5\u5b9e\u4f8b<br \/>\nlet peerConnection &#061; null;       \/\/ WebRTC RTCPeerConnection \u5b9e\u4f8b<br \/>\nlet localStream &#061; null;          \/\/ \u672c\u5730\u97f3\u89c6\u9891\u6d41&#xff08;MediaStream&#xff09;<\/p>\n<p>\/\/ 5. STUN \u670d\u52a1\u5668\u914d\u7f6e&#xff08;ICE \u670d\u52a1\u5668&#xff09;&#xff0c;\u7528\u4e8e NAT \u7a7f\u900f<br \/>\nconst iceServers &#061; {<br \/>\n  iceServers: [<br \/>\n    { urls: &#039;stun:stun.l.google.com:19302&#039; },<br \/>\n    { urls: &#039;stun:stun.qq.com:3478&#039; },<br \/>\n    { urls: &#039;stun:stun.aliyun.com:3478&#039; }<br \/>\n  ]<br \/>\n};<br \/>\n&lt;\/script&gt;<\/p>\n<h4>10.2 WebSocket \u8fde\u63a5\u4e0e\u6d88\u606f\u53d1\u9001<\/h4>\n<p>&lt;script setup&gt;<br \/>\n\/\/ &#8230; \u4e0a\u9762\u7684\u4ee3\u7801\u7701\u7565 &#8230;<\/p>\n<p>\/\/ \u901a\u7528\u6d88\u606f\u53d1\u9001\u51fd\u6570&#xff1a;\u6240\u6709 register \/ call \/ answer \/ ice \u90fd\u901a\u8fc7\u5b83\u53d1\u9001<br \/>\nconst sendMessage &#061; (message) &#061;&gt; {<br \/>\n  if (socket &amp;&amp; socket.readyState &#061;&#061;&#061; WebSocket.OPEN) {<br \/>\n    socket.send(JSON.stringify(message));<br \/>\n    console.log(&#039;&#x1f4e4; \u53d1\u9001\u6d88\u606f&#xff1a;&#039;, message);<br \/>\n  } else {<br \/>\n    console.error(&#039;\u274c WebSocket \u672a\u8fde\u63a5&#xff0c;\u65e0\u6cd5\u53d1\u9001\u6d88\u606f&#039;);<br \/>\n    alert(&#039;\u672a\u8fde\u63a5\u670d\u52a1\u5668&#xff0c;\u8bf7\u5148\u70b9\u51fb\u201c\u8fde\u63a5\u670d\u52a1\u5668\u201d&#xff01;&#039;);<br \/>\n  }<br \/>\n};<\/p>\n<p>\/\/ \u70b9\u51fb\u201c\u8fde\u63a5\u670d\u52a1\u5668\u201d\u6309\u94ae\u65f6\u89e6\u53d1<br \/>\nconst connect &#061; () &#061;&gt; {<br \/>\n  if (!userId.value.trim()) {<br \/>\n    alert(&#039;\u8bf7\u8f93\u5165\u4f60\u7684\u7528\u6237ID&#xff01;&#xff08;\u4e0d\u80fd\u4e3a\u7a7a&#xff09;&#039;);<br \/>\n    return;<br \/>\n  }<\/p>\n<p>  \/\/ \u6ce8\u610f&#xff1a;\u8fd9\u91cc\u7684\u7aef\u53e3\u548c\u8def\u5f84\u8981\u4e0e\u540e\u7aef Netty \u914d\u7f6e\u4e00\u81f4<br \/>\n  socket &#061; new WebSocket(&#039;ws:\/\/localhost:8004\/ws&#039;);<\/p>\n<p>  \/\/ \u8fde\u63a5\u6210\u529f<br \/>\n  socket.onopen &#061; () &#061;&gt; {<br \/>\n    console.log(&#039;\u2705 WebSocket \u8fde\u63a5\u6210\u529f&#039;);<br \/>\n    socketConnected.value &#061; true;<\/p>\n<p>    \/\/ \u5411\u670d\u52a1\u5668\u53d1\u9001 register \u6d88\u606f&#xff0c;\u6ce8\u518c\u5f53\u524d\u7528\u6237 ID<br \/>\n    sendMessage({<br \/>\n      type: &#039;register&#039;,<br \/>\n      from: userId.value,<br \/>\n      to: &#039;&#039;,<br \/>\n      data: &#039;&#039;<br \/>\n    });<br \/>\n  };<\/p>\n<p>  \/\/ \u6536\u5230\u670d\u52a1\u5668\u8f6c\u53d1\u7684\u4fe1\u4ee4\u6d88\u606f<br \/>\n  socket.onmessage &#061; (event) &#061;&gt; {<br \/>\n    try {<br \/>\n      const message &#061; JSON.parse(event.data);<br \/>\n      console.log(&#039;&#x1f4e5; \u6536\u5230\u670d\u52a1\u7aef\u6d88\u606f&#xff1a;&#039;, message);<br \/>\n      handleMessage(message);<br \/>\n    } catch (err) {<br \/>\n      console.error(&#039;\u274c \u6d88\u606f\u89e3\u6790\u5931\u8d25&#xff1a;&#039;, err);<br \/>\n    }<br \/>\n  };<\/p>\n<p>  socket.onclose &#061; () &#061;&gt; {<br \/>\n    console.log(&#039;\u274c WebSocket \u8fde\u63a5\u5173\u95ed&#039;);<br \/>\n    socketConnected.value &#061; false;<br \/>\n  };<\/p>\n<p>  socket.onerror &#061; (err) &#061;&gt; {<br \/>\n    console.error(&#039;\u274c WebSocket \u8fde\u63a5\u51fa\u9519&#xff1a;&#039;, err);<br \/>\n    socketConnected.value &#061; false;<br \/>\n  };<br \/>\n};<br \/>\n&lt;\/script&gt;<\/p>\n<h4>10.3 \u5904\u7406\u6536\u5230\u7684\u4fe1\u4ee4\u6d88\u606f<\/h4>\n<p>&lt;script setup&gt;<br \/>\n\/\/ &#8230; \u524d\u9762\u4ee3\u7801\u7701\u7565 &#8230;<\/p>\n<p>\/\/ \u6839\u636e\u6d88\u606f\u7c7b\u578b\u5904\u7406&#xff1a;call \/ answer \/ ice<br \/>\nconst handleMessage &#061; async (message) &#061;&gt; {<br \/>\n  switch (message.type) {<br \/>\n    case &#039;call&#039;:<br \/>\n      \/\/ \u6536\u5230\u5bf9\u65b9\u53d1\u8d77\u7684\u547c\u53eb&#xff08;\u5305\u542b SDP offer&#xff09;<br \/>\n      await answerCall(message);<br \/>\n      break;<br \/>\n    case &#039;answer&#039;:<br \/>\n      \/\/ \u5bf9\u65b9\u5df2\u5e94\u7b54&#xff0c;\u8bbe\u7f6e\u8fdc\u7a0b SDP<br \/>\n      await setRemoteSDP(message.data);<br \/>\n      break;<br \/>\n    case &#039;ice&#039;:<br \/>\n      \/\/ \u6536\u5230\u5bf9\u65b9\u7684 ICE \u5019\u9009<br \/>\n      await addIceCandidate(message.data);<br \/>\n      break;<br \/>\n    default:<br \/>\n      console.log(&#039;&#x1f4cc; \u672a\u5904\u7406\u7684\u6d88\u606f\u7c7b\u578b&#xff1a;&#039;, message.type);<br \/>\n  }<br \/>\n};<br \/>\n&lt;\/script&gt;<\/p>\n<h4>10.4 WebRTC \u6838\u5fc3&#xff1a;PeerConnection \u521d\u59cb\u5316\u4e0e\u4e8b\u4ef6\u7ed1\u5b9a<\/h4>\n<p>&lt;script setup&gt;<br \/>\n\/\/ &#8230; \u7ee7\u7eed\u8865\u5145\u5728\u540c\u4e00\u4e2a &lt;script setup&gt; \u5185 &#8230;<\/p>\n<p>\/\/ \u521d\u59cb\u5316 RTCPeerConnection<br \/>\nconst initPeerConnection &#061; async () &#061;&gt; {<br \/>\n  \/\/ \u5982\u679c\u5df2\u6709\u8fde\u63a5&#xff0c;\u5148\u5173\u95ed&#xff0c;\u907f\u514d\u91cd\u590d<br \/>\n  if (peerConnection) {<br \/>\n    peerConnection.close();<br \/>\n  }<\/p>\n<p>  \/\/ \u521b\u5efa\u65b0\u7684 PeerConnection&#xff0c;\u4f20\u5165 ICE \u670d\u52a1\u5668\u914d\u7f6e<br \/>\n  peerConnection &#061; new RTCPeerConnection(iceServers);<\/p>\n<p>  \/\/ \u76d1\u542c\u672c\u5730 ICE \u5019\u9009\u751f\u6210\u4e8b\u4ef6&#xff1a;\u6bcf\u751f\u6210\u4e00\u4e2a\u5730\u5740&#xff0c;\u5c31\u901a\u8fc7\u4fe1\u4ee4\u53d1\u7ed9\u5bf9\u65b9<br \/>\n  peerConnection.onicecandidate &#061; (event) &#061;&gt; {<br \/>\n    if (event.candidate) {<br \/>\n      sendMessage({<br \/>\n        type: &#039;ice&#039;,<br \/>\n        from: userId.value,<br \/>\n        to: targetUserId.value,<br \/>\n        data: JSON.stringify(event.candidate)<br \/>\n      });<br \/>\n    }<br \/>\n  };<\/p>\n<p>  \/\/ \u76d1\u542c\u8fdc\u7a0b\u5a92\u4f53\u6d41\u4e8b\u4ef6&#xff1a;\u5f53\u5bf9\u65b9\u7684\u97f3\u89c6\u9891\u6d41\u5230\u8fbe\u65f6\u6302\u8f7d\u5230 &lt;video&gt;<br \/>\n  peerConnection.ontrack &#061; (event) &#061;&gt; {<br \/>\n    remoteVideo.value.srcObject &#061; event.streams[0];<br \/>\n    console.log(&#039;&#x1f3a5; \u6536\u5230\u8fdc\u7a0b\u97f3\u89c6\u9891\u6d41&#039;);<br \/>\n  };<br \/>\n};<br \/>\n&lt;\/script&gt;<\/p>\n<h4>10.5 \u53d1\u8d77\u547c\u53eb&#xff08;Caller \u7aef\u903b\u8f91&#xff09;<\/h4>\n<p>&lt;script setup&gt;<br \/>\n\/\/ &#8230; \u7ee7\u7eed\u5728\u540c\u4e00\u4e2a &lt;script setup&gt; \u4e2d &#8230;<\/p>\n<p>\/\/ \u70b9\u51fb\u201c\u53d1\u8d77\u89c6\u9891\u547c\u53eb\u201d<br \/>\nconst call &#061; async () &#061;&gt; {<br \/>\n  if (!targetUserId.value.trim()) {<br \/>\n    alert(&#039;\u8bf7\u8f93\u5165\u5bf9\u65b9\u7528\u6237ID&#xff01;&#039;);<br \/>\n    return;<br \/>\n  }<\/p>\n<p>  try {<br \/>\n    \/\/ 1. \u521d\u59cb\u5316 PeerConnection<br \/>\n    await initPeerConnection();<\/p>\n<p>    \/\/ 2. \u83b7\u53d6\u672c\u5730\u97f3\u89c6\u9891\u6d41&#xff08;\u6d4f\u89c8\u5668\u4f1a\u5f39\u51fa\u6743\u9650\u7533\u8bf7&#xff09;<br \/>\n    localStream &#061; await navigator.mediaDevices.getUserMedia({<br \/>\n      video: true,<br \/>\n      audio: true<br \/>\n    });<br \/>\n    \/\/ 3. \u5c06\u672c\u5730\u6d41\u663e\u793a\u5728\u672c\u5730\u89c6\u9891\u4e0a<br \/>\n    localVideo.value.srcObject &#061; localStream;<\/p>\n<p>    \/\/ 4. \u5c06\u672c\u5730\u6d41\u7684\u6bcf\u4e00\u6761\u8f68\u9053\u6dfb\u52a0\u5230 PeerConnection<br \/>\n    localStream.getTracks().forEach((track) &#061;&gt; {<br \/>\n      peerConnection.addTrack(track, localStream);<br \/>\n    });<\/p>\n<p>    \/\/ 5. \u521b\u5efa SDP offer&#xff08;\u63cf\u8ff0\u672c\u5730\u7684\u5a92\u4f53\u80fd\u529b&#xff09;<br \/>\n    const offer &#061; await peerConnection.createOffer();<br \/>\n    \/\/ 6. \u5c06 offer \u8bbe\u7f6e\u4e3a\u672c\u5730\u63cf\u8ff0<br \/>\n    await peerConnection.setLocalDescription(offer);<\/p>\n<p>    \/\/ 7. \u901a\u8fc7\u4fe1\u4ee4\u628a offer \u53d1\u9001\u7ed9\u5bf9\u65b9<br \/>\n    sendMessage({<br \/>\n      type: &#039;call&#039;,<br \/>\n      from: userId.value,<br \/>\n      to: targetUserId.value,<br \/>\n      data: JSON.stringify(offer)<br \/>\n    });<\/p>\n<p>    console.log(&#039;&#x1f4de; \u5df2\u5411\u7528\u6237\u53d1\u8d77\u547c\u53eb&#xff1a;&#039;, targetUserId.value);<br \/>\n  } catch (err) {<br \/>\n    console.error(&#039;\u274c \u53d1\u8d77\u547c\u53eb\u5931\u8d25&#xff1a;&#039;, err);<br \/>\n    alert(&#039;\u53d1\u8d77\u547c\u53eb\u5931\u8d25&#xff0c;\u8bf7\u68c0\u67e5\u6444\u50cf\u5934\/\u9ea6\u514b\u98ce\u6743\u9650\u6216\u7f51\u7edc\u73af\u5883&#039;);<br \/>\n  }<br \/>\n};<br \/>\n&lt;\/script&gt;<\/p>\n<h4>10.6 \u63a5\u542c\u547c\u53eb&#xff08;Callee \u7aef\u903b\u8f91&#xff09;<\/h4>\n<p>&lt;script setup&gt;<br \/>\n\/\/ &#8230; \u7ee7\u7eed &#8230;<\/p>\n<p>\/\/ \u6536\u5230\u5bf9\u65b9\u7684 call \u6d88\u606f\u540e\u81ea\u52a8\u5e94\u7b54&#xff08;\u7b80\u5316\u903b\u8f91&#xff0c;\u5b9e\u9645\u53ef\u52a0\u201c\u662f\u5426\u63a5\u542c\u201d\u5f39\u7a97&#xff09;<br \/>\nconst answerCall &#061; async (message) &#061;&gt; {<br \/>\n  \/\/ \u8bb0\u5f55\u5bf9\u65b9 ID&#xff0c;\u540e\u7eed\u53d1\u9001 answer \/ ice \u65f6\u9700\u8981\u7528<br \/>\n  targetUserId.value &#061; message.from;<\/p>\n<p>  try {<br \/>\n    \/\/ 1. \u521d\u59cb\u5316 PeerConnection<br \/>\n    await initPeerConnection();<\/p>\n<p>    \/\/ 2. \u83b7\u53d6\u672c\u5730\u97f3\u89c6\u9891\u6d41<br \/>\n    localStream &#061; await navigator.mediaDevices.getUserMedia({<br \/>\n      video: true,<br \/>\n      audio: true<br \/>\n    });<br \/>\n    localVideo.value.srcObject &#061; localStream;<\/p>\n<p>    localStream.getTracks().forEach((track) &#061;&gt; {<br \/>\n      peerConnection.addTrack(track, localStream);<br \/>\n    });<\/p>\n<p>    \/\/ 3. \u8bbe\u7f6e\u5bf9\u65b9\u7684 SDP offer \u4e3a\u8fdc\u7a0b\u63cf\u8ff0<br \/>\n    await peerConnection.setRemoteDescription(JSON.parse(message.data));<\/p>\n<p>    \/\/ 4. \u521b\u5efa SDP answer<br \/>\n    const answer &#061; await peerConnection.createAnswer();<br \/>\n    \/\/ 5. \u8bbe\u7f6e\u672c\u5730 SDP<br \/>\n    await peerConnection.setLocalDescription(answer);<\/p>\n<p>    \/\/ 6. \u901a\u8fc7\u4fe1\u4ee4\u628a answer \u53d1\u9001\u56de\u547c\u53eb\u65b9<br \/>\n    sendMessage({<br \/>\n      type: &#039;answer&#039;,<br \/>\n      from: userId.value,<br \/>\n      to: targetUserId.value,<br \/>\n      data: JSON.stringify(answer)<br \/>\n    });<\/p>\n<p>    console.log(&#039;&#x1f4de; \u5df2\u5e94\u7b54\u89c6\u9891\u547c\u53eb&#xff1a;&#039;, targetUserId.value);<br \/>\n  } catch (err) {<br \/>\n    console.error(&#039;\u274c \u5e94\u7b54\u547c\u53eb\u5931\u8d25&#xff1a;&#039;, err);<br \/>\n    alert(&#039;\u5e94\u7b54\u547c\u53eb\u5931\u8d25&#xff01;&#039;);<br \/>\n  }<br \/>\n};<br \/>\n&lt;\/script&gt;<\/p>\n<h4>10.7 \u8bbe\u7f6e\u8fdc\u7a0b SDP \u4e0e\u6dfb\u52a0 ICE \u5019\u9009<\/h4>\n<p>&lt;script setup&gt;<br \/>\n\/\/ &#8230; \u7ee7\u7eed &#8230;<\/p>\n<p>\/\/ \u8bbe\u7f6e\u8fdc\u7a0b SDP&#xff08;\u65e0\u8bba\u662f Caller \u8fd8\u662f Callee&#xff0c;\u5728\u6536\u5230 answer \u6216 offer \u540e\u90fd\u8981\u8c03\u7528&#xff09;<br \/>\nconst setRemoteSDP &#061; async (sdpStr) &#061;&gt; {<br \/>\n  try {<br \/>\n    const sdp &#061; JSON.parse(sdpStr);<br \/>\n    await peerConnection.setRemoteDescription(new RTCSessionDescription(sdp));<br \/>\n    console.log(&#039;\u2705 \u8bbe\u7f6e\u8fdc\u7a0b SDP \u6210\u529f&#039;);<br \/>\n  } catch (err) {<br \/>\n    console.error(&#039;\u274c \u8bbe\u7f6e\u8fdc\u7a0b SDP \u5931\u8d25&#xff1a;&#039;, err);<br \/>\n  }<br \/>\n};<\/p>\n<p>\/\/ \u6dfb\u52a0 ICE \u5019\u9009<br \/>\nconst addIceCandidate &#061; async (iceStr) &#061;&gt; {<br \/>\n  try {<br \/>\n    const ice &#061; JSON.parse(iceStr);<br \/>\n    await peerConnection.addIceCandidate(new RTCIceCandidate(ice));<br \/>\n    console.log(&#039;\u2705 \u6dfb\u52a0 ICE \u5019\u9009\u6210\u529f&#039;);<br \/>\n  } catch (err) {<br \/>\n    console.error(&#039;\u274c \u6dfb\u52a0 ICE \u5019\u9009\u5931\u8d25&#xff1a;&#039;, err);<br \/>\n  }<br \/>\n};<br \/>\n&lt;\/script&gt;<\/p>\n<h4>10.8 \u6302\u65ad\u901a\u8bdd\u4e0e\u8d44\u6e90\u6e05\u7406<\/h4>\n<p>&lt;script setup&gt;<br \/>\n\/\/ &#8230; \u7ee7\u7eed &#8230;<\/p>\n<p>\/\/ \u6302\u65ad\u901a\u8bdd<br \/>\nconst hangUp &#061; () &#061;&gt; {<br \/>\n  \/\/ \u505c\u6b62\u672c\u5730\u6d41<br \/>\n  if (localStream) {<br \/>\n    localStream.getTracks().forEach((track) &#061;&gt; track.stop());<br \/>\n    localVideo.value.srcObject &#061; null;<br \/>\n    localStream &#061; null;<br \/>\n  }<\/p>\n<p>  \/\/ \u6e05\u7a7a\u8fdc\u7a0b\u89c6\u9891<br \/>\n  if (remoteVideo.value) {<br \/>\n    remoteVideo.value.srcObject &#061; null;<br \/>\n  }<\/p>\n<p>  \/\/ \u5173\u95ed PeerConnection<br \/>\n  if (peerConnection) {<br \/>\n    peerConnection.close();<br \/>\n    peerConnection &#061; null;<br \/>\n  }<\/p>\n<p>  \/\/ \u91cd\u7f6e\u5bf9\u65b9 ID<br \/>\n  targetUserId.value &#061; &#039;&#039;;<\/p>\n<p>  console.log(&#039;&#x1f4de; \u5df2\u6302\u65ad\u901a\u8bdd&#039;);<br \/>\n  alert(&#039;\u5df2\u6302\u65ad\u901a\u8bdd&#xff01;&#039;);<br \/>\n};<\/p>\n<p>\/\/ \u9875\u9762\u9500\u6bc1\u65f6\u81ea\u52a8\u6e05\u7406\u8d44\u6e90&#xff0c;\u9632\u6b62\u6444\u50cf\u5934\u88ab\u5360\u7528\u3001\u8fde\u63a5\u6cc4\u6f0f<br \/>\nonUnmounted(() &#061;&gt; {<br \/>\n  if (socket) {<br \/>\n    socket.close();<br \/>\n    console.log(&#039;&#x1f50c; \u5173\u95ed WebSocket \u8fde\u63a5&#039;);<br \/>\n  }<br \/>\n  if (peerConnection) {<br \/>\n    peerConnection.close();<br \/>\n    console.log(&#039;&#x1f50c; \u5173\u95ed PeerConnection&#039;);<br \/>\n  }<br \/>\n  if (localStream) {<br \/>\n    localStream.getTracks().forEach((track) &#061;&gt; track.stop());<br \/>\n    console.log(&#039;&#x1f507; \u505c\u6b62\u672c\u5730\u97f3\u89c6\u9891\u6d41&#039;);<br \/>\n  }<br \/>\n});<br \/>\n&lt;\/script&gt;<\/p>\n<p>\u5230\u8fd9\u91cc&#xff0c;\u524d\u7aef\u5b8c\u6574\u903b\u8f91\u5c31\u5df2\u7ecf\u642d\u5efa\u5b8c\u6210\u3002<\/p>\n<hr \/>\n<h3>\u5341\u4e00\u3001\u8054\u8c03\u4e0e\u6d4b\u8bd5\u6b65\u9aa4<\/h3>\n<li>\u542f\u52a8\u540e\u7aef SpringBoot \u9879\u76ee&#xff08;\u786e\u4fdd Netty WebSocket \u7aef\u53e3\u5982 8004 \u5df2\u76d1\u542c&#xff09;\u3002<\/li>\n<li>\u542f\u52a8\u524d\u7aef Vue \u9879\u76ee&#xff0c;\u6253\u5f00\u6d4f\u89c8\u5668\u8bbf\u95ee\u9875\u9762\u3002<\/li>\n<li>\u6253\u5f00\u4e24\u4e2a\u6d4f\u89c8\u5668\u6807\u7b7e\u9875&#xff08;\u6216\u4e24\u4e2a\u4e0d\u540c\u6d4f\u89c8\u5668&#xff09;&#xff1a;\n<ul>\n<li>\u9875\u9762 A&#xff1a;\u8f93\u5165 user1&#xff0c;\u70b9\u51fb\u201c\u8fde\u63a5\u670d\u52a1\u5668\u201d\u3002<\/li>\n<li>\u9875\u9762 B&#xff1a;\u8f93\u5165 user2&#xff0c;\u70b9\u51fb\u201c\u8fde\u63a5\u670d\u52a1\u5668\u201d\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5728 A \u9875\u9762\u8f93\u5165\u5bf9\u65b9 ID user2&#xff0c;\u70b9\u51fb\u201c\u53d1\u8d77\u89c6\u9891\u547c\u53eb\u201d\u3002<\/li>\n<li>\u6d4f\u89c8\u5668\u4f1a\u5f39\u51fa\u6444\u50cf\u5934\/\u9ea6\u514b\u98ce\u6743\u9650\u6388\u6743&#xff0c;\u70b9\u51fb\u5141\u8bb8\u3002<\/li>\n<li>\u6b63\u5e38\u60c5\u51b5\u4e0b&#xff0c;\u4e24\u8fb9\u90fd\u80fd\u770b\u5230&#xff1a;\n<ul>\n<li>\u81ea\u5df1\u7684\u672c\u5730\u753b\u9762\u3002<\/li>\n<li>\u5bf9\u65b9\u7684\u8fdc\u7a0b\u753b\u9762\u3002<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h3>\u5341\u4e8c\u3001\u5e38\u89c1\u95ee\u9898\u4e0e\u6392\u67e5\u601d\u8def<\/h3>\n<h4>12.1 \u4e24\u8fb9\u90fd\u8fde\u4e0a\u4e86 WebSocket&#xff0c;\u4f46\u770b\u4e0d\u5230\u89c6\u9891&#xff1f;<\/h4>\n<p>\u53ef\u80fd\u539f\u56e0&#xff1a;<\/p>\n<ul>\n<li>\u6d4f\u89c8\u5668\u62d2\u7edd\u4e86\u6444\u50cf\u5934 \/ \u9ea6\u514b\u98ce\u6743\u9650 \u2192 \u91cd\u65b0\u6388\u6743\u3002<\/li>\n<li>STUN \u670d\u52a1\u5668\u88ab\u5899\u6216\u4e0d\u53ef\u8fbe \u2192 \u5c1d\u8bd5\u6362\u5176\u4ed6 STUN \u5730\u5740&#xff0c;\u6216\u5728\u5c40\u57df\u7f51\u5185\u5148\u4e0d\u4f9d\u8d56 STUN\u3002<\/li>\n<li>\u524d\u540e\u7aef\u7aef\u53e3\u3001\u8def\u5f84\u4e0d\u4e00\u81f4 \u2192 \u68c0\u67e5&#xff1a;\n<ul>\n<li>Netty \u662f\u5426\u76d1\u542c 8004\u3002<\/li>\n<li>\u524d\u7aef WebSocket \u5730\u5740\u662f\u5426\u4e3a ws:\/\/localhost:8004\/ws\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>12.2 \u63a7\u5236\u53f0\u62a5 SDP \/ ICE \u76f8\u5173\u9519\u8bef&#xff1f;<\/h4>\n<p>\u5e38\u89c1\u9519\u8bef&#xff1a;<\/p>\n<ul>\n<li>setRemoteDescription called in wrong state&#xff1a;\n<ul>\n<li>\u901a\u5e38\u662f SDP \u8bbe\u7f6e\u987a\u5e8f\u6709\u8bef&#xff0c;\u9700\u8981\u5148 setRemoteDescription \u518d createAnswer\u3002<\/li>\n<\/ul>\n<\/li>\n<li>addIceCandidate failed&#xff1a;\n<ul>\n<li>\u53ef\u80fd\u662f SDP \u8fd8\u6ca1\u8bbe\u7f6e\u597d\u5c31\u6dfb\u52a0 ICE&#xff0c;\u9700\u8981\u786e\u4fdd\u5148\u5b8c\u6210 SDP \u7684 setRemoteDescription\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>\u5341\u4e09\u3001\u5e38\u89c1\u9762\u8bd5\u9898\u4e0e\u53c2\u8003\u7b54\u6848&#xff08;\u56f4\u7ed5\u672c\u9879\u76ee&#xff09;<\/h3>\n<h4>\u95ee\u9898 1&#xff1a;WebRTC \u548c WebSocket \u6709\u4ec0\u4e48\u533a\u522b&#xff1f;\u5728\u8fd9\u4e2a\u9879\u76ee\u91cc\u5206\u522b\u505a\u4ec0\u4e48&#xff1f;<\/h4>\n<p>\u53c2\u8003\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>WebRTC \u662f\u6d4f\u89c8\u5668\u539f\u751f\u63d0\u4f9b\u7684\u5b9e\u65f6\u97f3\u89c6\u9891\u901a\u4fe1\u6280\u672f&#xff0c;\u91cd\u70b9\u5728\u4e8e&#xff1a;\n<ul>\n<li>\u91c7\u96c6\u672c\u5730\u97f3\u89c6\u9891\u3002<\/li>\n<li>\u7f16\u89e3\u7801\u5a92\u4f53\u6570\u636e\u3002<\/li>\n<li>\u5efa\u7acb\u70b9\u5bf9\u70b9&#xff08;P2P&#xff09;\u5a92\u4f53\u901a\u9053\u3002<\/li>\n<\/ul>\n<\/li>\n<li>WebSocket \u662f\u4e00\u79cd\u5168\u53cc\u5de5\u7684\u957f\u8fde\u63a5\u901a\u4fe1\u534f\u8bae&#xff0c;\u901a\u5e38\u8dd1\u5728 TCP \u4e4b\u4e0a&#xff0c;\u7528\u4e8e&#xff1a;\n<ul>\n<li>\u5b9e\u73b0\u6d4f\u89c8\u5668\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u5b9e\u65f6\u6d88\u606f\u4f20\u8f93\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5728\u672c\u9879\u76ee\u4e2d&#xff1a;\n<ul>\n<li>WebRTC \u8d1f\u8d23\u5728\u4e24\u4e2a\u6d4f\u89c8\u5668\u4e4b\u95f4\u5efa\u7acb P2P \u8fde\u63a5&#xff0c;\u4f20\u8f93\u97f3\u89c6\u9891\u6d41\u3002<\/li>\n<li>WebSocket &#043; Netty \u8d1f\u8d23\u4fe1\u4ee4\u4ea4\u6362&#xff08;register \/ call \/ answer \/ ice&#xff09;&#xff0c;\u76f8\u5f53\u4e8e\u4e3a WebRTC \u505a\u201c\u7275\u7ebf\u642d\u6865\u201d\u548c\u201c\u4f1a\u8bdd\u534f\u5546\u201d\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h4>\u95ee\u9898 2&#xff1a;\u4ec0\u4e48\u662f ICE \/ STUN \/ TURN&#xff1f;\u4e3a\u4ec0\u4e48\u9700\u8981\u5b83\u4eec&#xff1f;<\/h4>\n<p>\u53c2\u8003\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>\u7531\u4e8e\u5927\u591a\u6570\u7528\u6237\u5728 NAT&#xff08;\u5982\u5bb6\u7528\u8def\u7531\u5668&#xff09;\u540e\u9762&#xff0c;\u53ea\u62e5\u6709\u5185\u7f51 IP&#xff0c;\u5bfc\u81f4\u4e24\u53f0\u8bbe\u5907\u5f88\u96be\u76f4\u63a5\u4e92\u76f8\u8bbf\u95ee\u3002<\/li>\n<li>STUN&#xff1a;Session Traversal Utilities for NAT\n<ul>\n<li>\u4e00\u79cd\u8f7b\u91cf\u7ea7\u7684\u7f51\u7edc\u670d\u52a1&#xff0c;\u7528\u4e8e\u8ba9\u8bbe\u5907\u77e5\u9053\u81ea\u5df1\u5728\u4e92\u8054\u7f51\u773c\u4e2d\u7684\u201c\u5916\u7f51 IP &#043; \u7aef\u53e3\u201d\u3002<\/li>\n<\/ul>\n<\/li>\n<li>ICE&#xff1a;Interactive Connectivity Establishment\n<ul>\n<li>\u4e00\u6574\u5957\u7528\u4e8e NAT \u7a7f\u900f\u7684\u6846\u67b6&#xff0c;\u4f1a\u7efc\u5408\u5c1d\u8bd5\u5404\u79cd\u5019\u9009\u5730\u5740&#xff08;\u672c\u5730\u3001STUN\u3001TURN&#xff09;&#xff0c;\u627e\u5230\u4e00\u6761\u80fd\u6253\u901a\u7684\u8def\u5f84\u3002<\/li>\n<\/ul>\n<\/li>\n<li>TURN&#xff1a;Traversal Using Relays around NAT\n<ul>\n<li>\u5f53 P2P \u65e0\u6cd5\u76f4\u63a5\u6253\u901a\u65f6&#xff0c;\u901a\u8fc7\u4e2d\u7ee7\u670d\u52a1\u5668\u4e2d\u8f6c\u5a92\u4f53\u6d41&#xff0c;\u4fdd\u8bc1\u53ef\u9760\u6027&#xff0c;\u4f46\u6210\u672c\u8f83\u9ad8\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5728\u672c\u9879\u76ee\u4e2d&#xff0c;\u6211\u4eec\u901a\u8fc7\u914d\u7f6e iceServers&#xff08;STUN \u5217\u8868&#xff09;\u8ba9\u6d4f\u89c8\u5668\u53ef\u4ee5\u83b7\u53d6\u81ea\u5df1\u7684\u516c\u7f51\u5019\u9009\u5730\u5740&#xff0c;\u4ece\u800c\u5c1d\u8bd5\u5efa\u7acb P2P \u8fde\u63a5\u3002<\/li>\n<\/ul>\n<hr \/>\n<h4>\u95ee\u9898 3&#xff1a;SDP \u5728 WebRTC \u4e2d\u7684\u4f5c\u7528\u662f\u4ec0\u4e48&#xff1f;<\/h4>\n<p>\u53c2\u8003\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>SDP&#xff08;Session Description Protocol&#xff09; \u662f\u4f1a\u8bdd\u63cf\u8ff0\u534f\u8bae&#xff0c;\u7528\u6765\u63cf\u8ff0\u4e00\u6b21\u591a\u5a92\u4f53\u4f1a\u8bdd\u7684\u53c2\u6570\u3002<\/li>\n<li>\u5728 WebRTC \u4e2d&#xff0c;SDP \u4e3b\u8981\u5305\u542b&#xff1a;\n<ul>\n<li>\u5a92\u4f53\u7c7b\u578b&#xff08;\u97f3\u9891\/\u89c6\u9891&#xff09;\u3002<\/li>\n<li>\u7f16\u7801\u683c\u5f0f&#xff08;codec&#xff0c;\u5982 VP8\u3001H264&#xff09;\u3002<\/li>\n<li>\u4f20\u8f93\u534f\u8bae\u3001\u5e26\u5bbd\u9650\u5236\u7b49\u3002<\/li>\n<\/ul>\n<\/li>\n<li>WebRTC \u901a\u8fc7 createOffer() \/ createAnswer() \u751f\u6210 SDP&#xff0c;\u5e76\u901a\u8fc7\u4fe1\u4ee4\u901a\u9053&#xff08;\u672c\u9879\u76ee\u4e2d\u662f WebSocket&#xff09;\u5728\u4e24\u4e2a\u7aef\u4e4b\u95f4\u4ea4\u6362\u3002<\/li>\n<li>\u7b80\u5355\u7406\u89e3&#xff1a;\n<p>SDP \u5c31\u662f\u4e00\u5f20\u201c\u5408\u540c\u201d&#xff0c;\u53cc\u65b9\u7ea6\u5b9a\u597d\u201c\u600e\u4e48\u8bf4\u8bdd\u3001\u7528\u4ec0\u4e48\u8bed\u8a00\u3001\u5728\u4ec0\u4e48\u9891\u9053\u8bf4\u201d&#xff0c;\u7136\u540e\u518d\u771f\u6b63\u5f00\u59cb\u4f20\u8f93\u3002<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h4>\u95ee\u9898 4&#xff1a;\u4e3a\u4ec0\u4e48\u8981\u7528 Netty \u5b9e\u73b0 WebSocket&#xff0c;\u800c\u4e0d\u662f\u76f4\u63a5\u7528 SpringBoot \u81ea\u5e26\u7684 WebSocket \u652f\u6301&#xff1f;<\/h4>\n<p>\u53c2\u8003\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>SpringBoot \u672c\u8eab\u4e5f\u652f\u6301\u57fa\u4e8e STOMP \/ SockJS \u7684 WebSocket \u65b9\u6848&#xff0c;\u66f4\u504f\u5411\u4e1a\u52a1\u5f00\u53d1\u7684\u65b9\u4fbf\u6027\u3002<\/li>\n<li>Netty \u662f\u4e00\u4e2a\u66f4\u5e95\u5c42\u7684\u9ad8\u6027\u80fd\u7f51\u7edc\u6846\u67b6&#xff0c;\u4f18\u52bf\u5728\u4e8e&#xff1a;\n<ul>\n<li>\u6027\u80fd\u597d&#xff0c;\u53ef\u63a7\u6027\u5f3a&#xff0c;\u9002\u7528\u4e8e\u9ad8\u5e76\u53d1\u3001\u591a\u8fde\u63a5\u573a\u666f\u3002<\/li>\n<li>\u53ef\u4ee5\u7075\u6d3b\u5b9a\u5236 Pipeline \u4e0e Handler\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5728\u5b9e\u9645\u751f\u4ea7\u4e2d&#xff1a;\n<ul>\n<li>\u5982\u679c\u53ea\u662f\u7b80\u5355\u7684\u6d88\u606f\u63a8\u9001&#xff0c;\u5c0f\u9879\u76ee\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528 Spring \u7684 WebSocket \u652f\u6301\u3002<\/li>\n<li>\u5982\u679c\u9700\u8981\u9ad8\u6027\u80fd IM\u3001\u7f51\u5173\u3001\u957f\u8fde\u63a5\u670d\u52a1\u7b49&#xff0c;Netty \u66f4\u9002\u5408\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u672c\u9879\u76ee\u7684\u76ee\u7684\u4e4b\u4e00\u662f\u8ba9\u5b66\u4e60\u8005\u63a5\u89e6 Netty&#xff0c;\u7406\u89e3\u66f4\u5e95\u5c42\u7684\u7f51\u7edc\u5904\u7406\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n<hr \/>\n<h4>\u95ee\u9898 5&#xff1a;\u5982\u679c\u5728\u5b9e\u9645\u9879\u76ee\u4e2d&#xff0c;\u8981\u652f\u6301\u591a\u4eba\u4f1a\u8bae \/ \u7fa4\u804a&#xff0c;\u8be5\u600e\u4e48\u6269\u5c55&#xff1f;<\/h4>\n<p>\u53c2\u8003\u7b54\u6848&#xff08;\u601d\u8def\u578b\u56de\u7b54&#xff09;&#xff1a;<\/p>\n<li>\u4fe1\u4ee4\u5c42\u9762&#xff1a;\n<ul>\n<li>\u5f53\u524d\u9879\u76ee\u662f\u4e00\u5bf9\u4e00&#xff0c;\u901a\u8fc7 from \/ to \u5efa\u7acb\u5355\u5bf9\u5355\u4fe1\u4ee4\u3002<\/li>\n<li>\u591a\u4eba\u4f1a\u8bae\u53ef\u4ee5\u91c7\u7528\u623f\u95f4&#xff08;room&#xff09;\u7684\u6982\u5ff5&#xff0c;\u5f15\u5165 roomId&#xff0c;\u8ba9\u670d\u52a1\u5668\u7ba1\u7406\u623f\u95f4\u5185\u6210\u5458\u5217\u8868&#xff0c;\u5e76\u8fdb\u884c\u5e7f\u64ad\u5f0f\u4fe1\u4ee4\u5206\u53d1\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5a92\u4f53\u5c42\u9762&#xff1a;\n<ul>\n<li>\u7eaf P2P \u7684\u7f51\u72b6\u62d3\u6251&#xff1a;n \u4eba\u5219\u6700\u591a\u6709 n*(n-1)\/2 \u6761\u8fde\u63a5&#xff0c;\u6d4f\u89c8\u5668\u8d1f\u62c5\u8f83\u5927\u3002<\/li>\n<li>\u751f\u4ea7\u73af\u5883\u901a\u5e38\u4f1a\u5f15\u5165 SFU&#xff08;Selective Forwarding Unit&#xff09;\u7b49\u5a92\u4f53\u670d\u52a1\u5668&#xff0c;\u5bf9\u6d41\u8fdb\u884c\u4e2d\u8f6c\u3001\u6df7\u6d41\u6216\u8f6c\u53d1\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5e26\u5bbd\u4e0e\u6027\u80fd&#xff1a;\n<ul>\n<li>\u591a\u4eba\u4f1a\u8bae\u5bf9\u4e0a\u884c\u5e26\u5bbd\u8981\u6c42\u9ad8&#xff0c;\u7eaf\u524d\u7aef P2P \u65b9\u6848\u4e0d\u591f\u7a33\u5b9a\u3002<\/li>\n<li>\u9700\u8981\u7ed3\u5408\u4e1a\u52a1\u573a\u666f\u9009\u62e9\u5408\u9002\u7684\u67b6\u6784&#xff08;\u5982 Janus\u3001Jitsi\u3001mediasoup \u7b49\u73b0\u6210 SFU&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h3>\u5341\u56db\u3001\u603b\u7ed3\u4e0e\u5ef6\u4f38\u5b66\u4e60\u65b9\u5411<\/h3>\n<p>\u901a\u8fc7\u672c\u7bc7\u6587\u7ae0\u4e0e\u914d\u5957 Demo&#xff0c;\u4f60\u5e94\u8be5\u5df2\u7ecf\u638c\u63e1&#xff1a;<\/p>\n<ul>\n<li>WebRTC \u57fa\u672c\u6982\u5ff5&#xff1a;SDP\u3001ICE\u3001STUN \u7684\u4f5c\u7528\u4e0e\u5173\u7cfb\u3002<\/li>\n<li>\u4fe1\u4ee4\u670d\u52a1\u5668\u7684\u804c\u8d23&#xff1a;\u4e3a\u4f55\u9700\u8981 WebSocket &#043; 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