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70 lines
1.9 KiB
70 lines
1.9 KiB
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<!DOCTYPE html> |
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<html> |
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<head> |
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<meta http-equiv="content-type" content="text/html; charset=UTF-8" /> |
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<meta http-equiv="X-UA-Compatible" content="IE=edge" /> |
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<title>Java后端WebSocket的Tomcat实现</title> |
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</head> |
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<body> |
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Welcome<br/><input id="text" type="text"/> |
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<button onclick="send()">发送消息</button> |
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<hr/> |
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<button onclick="closeWebSocket()">关闭WebSocket连接</button> |
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<hr/> |
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<div id="message"></div> |
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</body> |
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<script type="text/javascript"> |
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var websocket = null; |
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//判断当前浏览器是否支持WebSocket |
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if ('WebSocket' in window) { |
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websocket = new WebSocket("ws://localhost:8082/HiatmpPro/liwebsocket"); |
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} |
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else { |
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alert('当前浏览器 Not support websocket') |
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} |
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//连接发生错误的回调方法 |
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websocket.onerror = function () { |
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setMessageInnerHTML("WebSocket连接发生错误"); |
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}; |
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//连接成功建立的回调方法 |
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websocket.onopen = function () { |
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setMessageInnerHTML("WebSocket连接成功"); |
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} |
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//接收到消息的回调方法 |
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websocket.onmessage = function (event) { |
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setMessageInnerHTML(event.data); |
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} |
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//连接关闭的回调方法 |
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websocket.onclose = function () { |
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setMessageInnerHTML("WebSocket连接关闭"); |
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} |
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//监听窗口关闭事件，当窗口关闭时，主动去关闭websocket连接，防止连接还没断开就关闭窗口，server端会抛异常。 |
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window.onbeforeunload = function () { |
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closeWebSocket(); |
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} |
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//将消息显示在网页上 |
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function setMessageInnerHTML(innerHTML) { |
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document.getElementById('message').innerHTML += innerHTML + '<br/>'; |
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} |
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//关闭WebSocket连接 |
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function closeWebSocket() { |
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websocket.close(); |
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} |
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//发送消息 |
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function send() { |
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var message = document.getElementById('text').value; |
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websocket.send(message); |
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} |
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</script> |
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</html> |