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<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>简易WebSocket消息推送系统</title>
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<style>
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*{
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box-sizing: border-box;
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-webkit-box-sizing: border-box;
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-moz-box-sizing: border-box;
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}
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body{
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font-family: Helvetica;
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-webkit-font-smoothing: antialiased;
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background: rgba( 71, 147, 227, 1);
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}
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h2{
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text-align: center;
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font-size: 18px;
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text-transform: uppercase;
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letter-spacing: 1px;
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color: white;
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padding: 30px 0;
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}
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/* Table Styles */
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.table-wrapper{
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margin: 10px 70px 70px;
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box-shadow: 0px 35px 50px rgba( 0, 0, 0, 0.2 );
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}
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.fl-table {
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border-radius: 5px;
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font-size: 12px;
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font-weight: normal;
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border: none;
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border-collapse: collapse;
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width: 100%;
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max-width: 100%;
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white-space: nowrap;
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background-color: white;
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}
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.fl-table td, .fl-table th {
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text-align: center;
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padding: 8px;
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}
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.fl-table td {
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border-right: 1px solid #f8f8f8;
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font-size: 12px;
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}
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.fl-table thead th {
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color: #ffffff;
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background: #4FC3A1;
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}
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.fl-table thead th:nth-child(odd) {
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color: #ffffff;
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background: #324960;
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}
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.fl-table tr:nth-child(even) {
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background: #F8F8F8;
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}
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/* Responsive */
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@media (max-width: 767px) {
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.fl-table {
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display: block;
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width: 100%;
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}
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.table-wrapper:before{
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content: "Scroll horizontally >";
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display: block;
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text-align: right;
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font-size: 11px;
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color: white;
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padding: 0 0 10px;
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}
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.fl-table thead, .fl-table tbody, .fl-table thead th {
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display: block;
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}
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.fl-table thead th:last-child{
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border-bottom: none;
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}
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.fl-table thead {
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float: left;
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}
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.fl-table tbody {
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width: auto;
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position: relative;
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overflow-x: auto;
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}
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.fl-table td, .fl-table th {
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padding: 20px .625em .625em .625em;
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height: 60px;
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vertical-align: middle;
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box-sizing: border-box;
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overflow-x: hidden;
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overflow-y: auto;
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width: 120px;
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font-size: 13px;
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text-overflow: ellipsis;
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}
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.fl-table thead th {
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text-align: left;
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border-bottom: 1px solid #f7f7f9;
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}
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.fl-table tbody tr {
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display: table-cell;
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}
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.fl-table tbody tr:nth-child(odd) {
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background: none;
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}
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.fl-table tr:nth-child(even) {
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background: transparent;
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}
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.fl-table tr td:nth-child(odd) {
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background: #F8F8F8;
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border-right: 1px solid #E6E4E4;
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}
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.fl-table tr td:nth-child(even) {
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border-right: 1px solid #E6E4E4;
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}
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.fl-table tbody td {
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display: block;
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text-align: center;
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}
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}
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</style>
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</head>
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<body>
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<h2>简易WebSocket消息推送系统</h2>
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<div class="table-wrapper">
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<table class="fl-table">
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<thead>
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<tr>
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<th>时间</th>
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<th>姓名</th>
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<th>学工号</th>
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<th>地点</th>
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</tr>
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</thead>
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<tbody id="data">
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<tbody>
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</table>
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</div>
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</body>
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<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
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<script type="text/javascript">
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if ("WebSocket" in window) {
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console.log("您的浏览器支持 WebSocket!");
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var num = 0;
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// 打开一个WebSocket
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var ws = new WebSocket("ws://10.69.249.148:9502");
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ws.onopen = function () {
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// WebSocket 已连接上，使用 send() 方法发送数据
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// alert("数据发送中...");
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// ws.send("发送数据");
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};
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// 每隔30秒钟发送一次心跳，避免WebSocket连接因超时而自动断开
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window.setInterval(function () {
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var ping = {"type": "ping"};
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ws.send(JSON.stringify(ping));
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}, 30000);
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ws.onmessage = function (ret) {
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console.log(ret.data);
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var d = JSON.parse(ret.data);
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if (d.code === 200) {
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var data = d.data;
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num++;
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var str = `<tr>
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<td>${data.recordOutTime}</td>
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<td>${data.userOutName}</td>
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<td>${data.userOutNum}</td>
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<td>${data.doorOutName}</td>
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</tr>`;
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$("#data").prepend(str);
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if (num > 6) {
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num--;
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$("#data tr:last").remove();
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}
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}
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};
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ws.onerror = function (e) {
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console.log(e);
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alert(e);
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};
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ws.onclose = function () {
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// 关闭WebSocket
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alert("连接已关闭...");
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}
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} else {
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alert("您的浏览器不支持 WebSocket!");
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}
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</script>
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</html>
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