兼容各大浏览器导出Excel

// 下载模板
    downloadModel() {
      this.$http({
        url: this.$http.adornUrl("/prod/category/template"),
        method: "get",
        responseType: "blob", // 解决文件下载乱码问题
      }).then(({ data }) => {
        var blob = new Blob([data], {
          type: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8",
        });
        const fileName = "商品分类模版.xlsx";
        const elink = document.createElement("a");
        if ("download" in elink) {
          // 非IE下载
          elink.download = fileName;
          elink.style.display = "none";
          elink.href = URL.createObjectURL(blob);
          document.body.appendChild(elink);
          elink.click();
          URL.revokeObjectURL(elink.href); // 释放URL 对象
          document.body.removeChild(elink);
        } else {
          // IE10+下载
          navigator.msSaveBlob(blob, fileName);
        }
      });
    },