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如果你要有一个支持 WebSocket的服务器(Java、Php等),可以在浏览器中使用一个新的WebSocket服务协议,来打开一个链接: - <font color="rgb(0, 0, 136)">var</font> socket = <font color="rgb(0, 0, 136)">new</font> WebSocket(<font color="rgb(0, 153, 0)">"ws://172.0.0.1:8080/SpringWebSocketPush/websck"</font>);
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& s& V6 N" N1 q- c与http://这一URL 前缀等价的WebSocket 前缀 是 ws:// ,安全 WebSocket 则有一个与http://等价的 wss:// 前缀。
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该套接口对象有四个用来监听套接口事件的回调: - socket.onopen = function(){
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- //打开% W* B4 H2 N+ F \& T' c! U
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- }
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- socket.onmessage = function(){
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- //在event.data消息数据
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% D( m0 ~" y& ?- socket.onclose = function(){
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- //关闭WebSocket6 x% J, Y$ `: p) x
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- //错误触发( g i' m' r& a1 F/ @/ h. D& M
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- }
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通过套接口发送数据,调用socket.send: - <font color="rgb(79, 79, 79)">socket</font>.<font color="rgb(79, 79, 79)">send</font>(message)
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; V* @$ ^ x2 c* Q$ n5 d代码附上: - <!DOCTYPE html>
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- <head>
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% \8 b% A( m) ^5 H0 g3 O- A - <meta content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=no" name="viewport">+ a9 x2 L" o. Y- [6 D$ X0 T
- <title>WebSocket</title>
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5 H9 V# u0 E0 Y. I" {* i" G3 q- <body>
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- <script>
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- socket.onmessage = function(event) {) W% b1 i& G; v$ r8 t
- alert("Received data from websocket: " + event.data);3 z; d+ P" M5 L* u' e; W1 d
- }
* s' |" c! t% W1 p' L! @ - socket.onopen = function(event) {
5 `- Z% { G7 j5 I" T - alert("Web Socket opened!");
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- } else {1 `# y5 K4 n+ T4 _% [& v& Z7 S( a
- alert("Your browser does not support Websockets. (Use Chrome)");# X7 S, ^ b% A* S. J, v* K& ]
- }
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- function send(message) {) d' T; s2 T: _9 W N5 Z
- if (!window.WebSocket) {
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- }
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- socket.send(message);# n- j' J4 S8 ~% o/ j+ ]3 v
- } else {
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- }
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- </script>; |+ U' n) h2 N( M4 d
+ V7 s T5 ^5 U2 G! t9 ?3 V2 f- </html>
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