//点击下载按钮
      qaGetDebitVoucher:async (id:any)=>{
        let res=await $axios.get($api.qaGetDebitVoucher+id,{ responseType: "blob",})
        download(res);
      },

    // 下载文件
    const download = (res: any) => {
      const data = res.data;
      if (!res.data) {
        return;
      }
      // 设置下载文件名称，使用正则取出名称
      const pat = new RegExp("(?<=filename=).*");
      let contentDisposition = "";
      //浏览器问题可能会出现 content-disposition 匹配不到
      if (res.headers["content-disposition"]) contentDisposition = res.headers["content-disposition"];
      if (res.headers["Content-Disposition"]) contentDisposition = res.headers["Content-Disposition"];
      const result = pat.exec(contentDisposition);
      let fileName = result && result[0];
      if (fileName == undefined) {
        fileName = "扣款凭证.xlsx";
      } else {
        fileName = decodeURIComponent(fileName);
      }

      let url = window.URL.createObjectURL(new Blob([data]));
      let link = document.createElement("a");
      link.style.display = "none";
      link.href = url;
      link.setAttribute("download", fileName);
      document.body.appendChild(link);
      link.click();
    };

下载成功

有的request没有配置的需要去配置一下
        if (response.status === 200) {
          // return Promise.resolve(response.data);
          //下载文件流
          if (response.config.responseType === 'blob') {
            return response;
            }
          // 如果请求错误，统一处理
          if (response.data.success) {
            return response;
          } else {
            message.warn(response.data.errMessage);
          }
        } else {
          Request.errorHandle(response);
          // return Promise.reject(response.data);
          return response;
        }