前端代码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>websocket示例</title>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
<script src="https://unpkg.com/element-ui/lib/index.js"></script>
<style type="text/css">
.alert_demo{
width: 150px;
height: 150px;
border:1px solid red;
position: absolute;
right: 0;
bottom: 0;
}
</style>
</head>
<body>
<div id="app">
<h3>消息显示</h3>
<ul>
<li v-for="(message, index) in messages" :key="index">
{{message}}
</li>
</ul>
<hr>
<h3>发送消息 </h3>
<input type="text" v-model="sendMsg" />
<button type="button" @click="send">发送</button>
<el-alert v-if="isShow" :title="messages" type="success" description="接收到websocket数据,弹出此弹框" show-icon></el-alert>
<div class="alert_demo">
{{messages}}
</div>
</div>
<script type="text/javascript">
var socket;
var app = new Vue({
el: '#app',
data: {
messages: [],
sendMsg: '',
isShow:false
},
created: function() {
// var _this = this;
//创建WebSocket对象，指定要连接的服务器地址和端口，建立连接
socket = new WebSocket("ws://172.20.10.6:8080/websocket");
//打开连接
socket.onopen = function() {
console.log("Socket已打开");
};
//获得服务端推送的消息
socket.onmessage = (msg)=> {
console.log(msg.data);
this.messages.push(msg.data);
console.log(this.messages);
this.isShow = true
setTimeout(()=>{
this.isShow = false
},3000)
this.$message({
type:'success',
message:msg.data
})
};
//关闭连接
socket.onclose = function() {
console.log("Socket已关闭");
};
//发送错误
socket.onerror = function() {
alert("Socket发生了错误");
}
},
watch: {
// 如果 `messages` 发生改变，这个函数就会运行
messages: function(newMsg, oldMsg) {
this.messages = newMsg;
},
},
methods: {
send: function() {
socket.send(this.sendMsg);
}
}
})
</script>
</body>
</html>
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