vue下载excel文件，后台传过来的是文件流解决办法

 

 downErrorExcel() {

      getdownAjax(

        url +

          upmsUrl +

          "/admin/teacher/download/excel/error/" +

          this.uploadError_downId,

        { responseType: "blob" }

      ).then(res => {

        let blob = new Blob([res], { type: "application/vnd.ms-excel" }); // res就是接口返回的文件流了

        let objectUrl = URL.createObjectURL(blob);

        window.location.href = objectUrl;

      });

    },

 

 

 ========================================方二

//导出excel表

Vue.prototype.exportExcel = (Url, FileName) => {

  getdownAjax(Url, {

    responseType: "blob"

  }).then(res => {

    // console.log("res", res);

    if (res) {

      let blob = new Blob([res.data], {

        type: "application/vnd.ms-excel;charset=utf-8"

      }); // res就是接口返回的文件流了

      let objectUrl = URL.createObjectURL(blob);

      // console.log(objectUrl);

      // const fileName = FileName;

      const elink = document.createElement("a");

      elink.download = FileName; //下载文件名称,

      elink.style.display = "none";

      elink.href = objectUrl;

      document.body.appendChild(elink);

      elink.click();

      URL.revokeObjectURL(elink.href); // 释放URL 对象

      document.body.removeChild(elink);

    }

  });

}

 tablebtn_exportAll() {

      this.exportExcel(

        url + upmsUrl + "/admin/student/export",

        "学员列表.xlsx"

      );

    },