created(){  
 this.webSocket();
},

methods: {
  webSocket(){
      const that = this;
      if (typeof (WebSocket) == 'undefined') {
        this.$notify({
          title: '提示',
          message: '当前浏览器无法接收实时报警信息，请使用谷歌浏览器！',
          type: 'warning',
          duration: 0
        });
      } else {
        // 获取token保存到vuex中的用户信息，此处仅适用于本项目，注意删除或修改
          console.log("info")
          console.log(this.$store.state.user.id)
          // 实例化socket，这里我把用户名传给了后台，使后台能判断要把消息发给哪个用户，其实也可以后台直接获取用户IP来判断并推送
          const socketUrl = 'ws://127.0.0.1:8868/websocket/' + this.$store.state.user.id;
          this.socket = new WebSocket(socketUrl);
          // 监听socket打开
          this.socket.onopen = function() {
            console.log('浏览器WebSocket已打开');
          };
          // 监听socket消息接收
          this.socket.onmessage = function(msg) {
            // 转换为json对象
            const data = JSON.parse(msg.data);
            that.$notify({
              title: '建立连接',
              // 这里也可以把返回信息加入到message中显示
              message: '实时报警服务连接成功，点击查看报警信息详情',
              type: 'success',
              duration: 0,
              onClick: () => {
                that.$router.push({
                  path: '/alarmManage/monitAlarmInfo'
                });
              }
            })
          };
          // 监听socket错误
          this.socket.onerror = function() {
            that.$notify({
              title: '错误',
              message: '服务器错误，无法接收实时报警信息',
              type: 'error',
              duration: 0
            });
          };
          // 监听socket关闭
          this.socket.onclose = function() {
            console.log('WebSocket已关闭');
          }
      }
  }, 
}