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>);
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。
该套接口对象有四个用来监听套接口事件的回调：
- socket.onopen = function(){
- //打开
- }
- socket.onmessage = function(){
- //在event.data消息数据
- }
- socket.onclose = function(){
- //关闭WebSocket
- }
- socket.onerror = function(){
- //错误触发
- }
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)
代码附上： - <!DOCTYPE html>
- <html>
- <head>
- <meta charset="UTF-8">
- <meta content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=no" name="viewport">
- <title>WebSocket</title>
- </head>
- <body>
- </body>
- <script>
- var socket;
- if (window.WebSocket) {
- socket = new WebSocket("ws://localhost:8080/myapp");
- socket.onmessage = function(event) {
- alert("Received data from websocket: " + event.data);
- }
- socket.onopen = function(event) {
- alert("Web Socket opened!");
- };
- socket.onclose = function(event) {
- alert("Web Socket closed.");
- };
- } else {
- alert("Your browser does not support Websockets. (Use Chrome)");
- }
- function send(message) {
- if (!window.WebSocket) {
- return;
- }
- if (socket.readyState == WebSocket.OPEN) {
- socket.send(message);
- } else {
- alert("The socket is not open.");
- }
- }
- </script>
- </html>
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