getToken() {
      function GetRequest() {
        var url = location.search; //获取url中"?"符后的字串
        var theRequest = new Object();
        if (url.indexOf("?") != -1) {
          var str = url.substr(1);
          var strs = str.split("&");
          for (var i = 0; i < strs.length; i++) {
            theRequest[strs[i].split("=")[0]] = unescape(strs[i].split("=")[1]);
          }
          // console.log("token"+str);
        }
        return theRequest;
      }
      var Request = new Object();
      Request = GetRequest();
      this.token = Request["token"];
      //保存token到sessionStorage
      sessionStorage.setItem("token", this.token);
      console.log("这是我一进首页就保存的token" + this.token);
    }