Vue+WebSocket 实现页面实时刷新长连接

<template>
</template>
<script>
export default {
  data() {
    return{
      // 用户Id
      userId:'',
      appid:'',
      // 事件类型
      type:'',
      msg:'',
      wsUrl:''
    }   
  },
  methods: {
    //初始化weosocket
    initWebSocket() {
      if (typeof WebSocket === "undefined") {
        alert("您的浏览器不支持WebSocket");
        return false;
      }
      const wsuri = 'ws://(后端WebSocket地址)/websocket/' + this.userId + '/' + this.appid // websocket地址
 
      this.websock = new WebSocket(wsuri);
      this.websock.onopen = this.websocketonopen;
      this.websock.onmessage = this.websocketonmessage;
      this.websock.onerror = this.websocketonerror;
      this.websock.onclose = this.websocketclose;
    },
    //连接成功
    websocketonopen() {
      console.log("WebSocket连接成功");
      // 添加心跳检测，每30秒发一次数据，防止连接断开（这跟服务器的设置有关，如果服务器没有设置每隔多长时间不发消息断开，可以不进行心跳设置）
      let self = this;
      this.timer = setInterval(() => {
        try {
          self.websock.send('test')
          console.log('发送消息');
        }catch(err){
          console.log('断开了：' + err);
          self.connection()
        }
      }, 30000)
    },
    //接收后端返回的数据，可以根据需要进行处理
    websocketonmessage(e) {
      var vm = this;
      let data1Json = JSON.parse(e.data);
      console.log(data1Json);
    },
    //连接建立失败重连
    websocketonerror(e) {
      console.log(`连接失败的信息：`, e);
      this.initWebSocket(); // 连接失败后尝试重新连接
    },
    //关闭连接
    websocketclose(e) {
      console.log("断开连接", e);
    }
  },
  created() {
    if (this.websock) {
      this.websock.close(); // 关闭websocket连接
    }
    this.initWebSocket();
  },
  destroyed() {
    //页面销毁时关闭ws连接
    if (this.websock) {
      this.websock.close(); // 关闭websocket
    }
  }
};
</script>