Vue+elementUi 使用后端返回地址下载Excel表格

HTML部分：

导出
            

methods方法:

    exportExcel() {
      let this_ = this;
      let url_ = this.PATH;
      let url =
        url_ +
        "/prevention/expExcel?" +
        "startTime=" +
        this_.daysData.time[0] +
        "&endTime=" +
        this_.daysData.time[1] +
        "&name=" +
        this_.daysData.name +
        "&ssjg=" +
        this_.daysData.company;
      var btn = document.createElement("a");
       //借助a标签 属性下载
      btn.setAttribute("download", ""); // download属性
      console.log(url);
      btn.setAttribute("href", url);
      btn.click();
    },