created() {
  // 连接websocket
  this.initWebSocket();
},
methods: {
  // 初始化weosocket
  initWebSocket() {
    const path = 'ws://192.168.107.10:8083/ws/zhangsan';
    this.webSocket = new WebSocket(path);
    this.webSocket.onmessage = this.webSocketMsg;
    this.webSocket.onopen = this.openWebsocket;
    this.webSocket.onerror = this.webSocketError;
    this.webSocket.onclose = this.closeWebSocket;
  },
  // 开启websocket
  openWebsocket() {
    // 发送心跳，可以字符串，也可以是Object
    let heartMsg = {
      messagetype: 7,
      data: {
        operation_type: 1,
        operation_options: 0,
        operation_data: null
      },
      err: ""
    }
    this.sendWebSocket(heartMsg);
  },
  webSocketError() {
    //连接建立失败重连
    this.initWebSocket();
  },
  webSocketMsg(e) { 
    //数据接收
    console.log(e.data);
  },
  sendWebSocket(data) {
  	//数据发送
    this.webSocket.send(JSON.stringify(data));
  },
  closeWebSocket(e) {  
  	//关闭
    this.webSocket.close();
  }
}