Nodejs实现WebSocket通信demo

原文链接： http://www.cnblogs.com/xiaohuizhang/p/10785285.html

一、创建websocket.js文件

步骤：

1、创建websocket.js文件，复制如下代码；

2、安装nodejs-websocket依赖；

3、该文件夹下命令行执行 node websocket.js;

var ws = require('nodejs-websocket');
console.log('开始建立连接...')

ws.createServer(function (conn) {
    conn.on('text', function (str) {
        console.log('浏览器给服务端收到的信息为:' + str)
        conn.sendText('服务器下发的内容=>'+str)
    })
    conn.on('close', function (code, reason) {
        console.log('关闭连接', code, reason)
    });
    conn.on('error', function (code, reason) {
        console.log('异常关闭', code, reason)
    });
}).listen(8001)
console.log('WebSocket建立完毕');

二、创建websocket.html页面

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
    <title>WebSocket</title>
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" rel="stylesheet">
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
    <style>
        body{
            width: 96%;
            margin-left: 2%;
            margin-top: 20px;
        }
    </style>
</head>
<body>
<div class="btn-group box" role="group" aria-label="...">
    <button type="button" class="btn btn-default">Oppo</button>
    <button type="button" class="btn btn-default">Vivo</button>
    <button type="button" class="btn btn-default">Apple</button>
</div>
<div class="page-header">
    <h5 class="info">服务器返回信息列表:</br></br></h5>
</div>
<script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.js"></script>
<script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script>
    if (window.WebSocket) {
        var ws = new WebSocket('ws://127.0.0.1:8001');

        ws.onopen = function () {
            console.log('连接服务器成功!');
            ws.send('startting...');
        }
        ws.onclose = function () {
            console.log('服务器关闭');
        }
        ws.onerror = function () {
            console.log("连接出错");
        }

        ws.onmessage = function (e) {
            document.querySelector(".box").onclick = function (e) {
                ws.send('当前点击框的内容为:<font style="color:red;" >' + e.target.innerHTML+'</font>');
            }
            $('.info').append(e.data + '</br></br>');
        }
    }
</script>
</body>
</html>

当终端看到如图所示时，即可测试demo了

打开wesocket.html页面点击按钮测试双向通信

如上图即实验成果，就是这么简单！

转载于:https://www.cnblogs.com/xiaohuizhang/p/10785285.html

Nodejs实现WebSocket通信demo

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