vue如何下载本地pdf文件

axios('/public/pdf/***.pdf', {//pdf的位置
            responseType: 'blob', //重要代码
        }).then(res => {
            const url = window.URL.createObjectURL(new Blob([res.data]));
            const link = document.createElement('a');
            link.href = url;
            let fileName = "下载的pdf.pdf" //保存到本地的文件名称
            link.setAttribute('download', fileName);
            document.body.appendChild(link);
            link.click();
            console.log(link);
            link.remove();
        })

<a href="/***.pdf" rel="external nofollow"  download="下载pdf.pdf">点击下载</a>

    downClick(row) {
      console.log(row, 'pppppxxx');
      downLoadZDPdf({
        custId: '91140403MA7Y5MCH34',
        qrdType: '6'
      }).then(res => {
        const link = document.createElement('a'); // 创建元素
        const blob = new Blob([res.data], {
          type: 'application/pdf;charset-UTF-8'
        });
        link.style.display = 'none';
        link.href = URL.createObjectURL(blob); // 创建下载的链接
        // num++
        link.setAttribute('download', row.stmtTp + '.pdf'); // 给下载后的文件命名
        document.body.appendChild(link);
        link.click(); // 点击下载
        document.body.removeChild(link); //  下载完成移除元素
        window.URL.revokeObjectURL(link.href); // 释放掉blob对象
      });
    },

 preview(row) {
      getZDDataOfYL({
        custId: '91140403MA7Y5MCH34',
        qrdType: '6'
      }).then(res => {
        console.log(res, '预览=>>>>>>>>>>>>>');
        const blob = new Blob([res.data], { type: 'application/pdf' });
        this.pdfSrc = window.URL.createObjectURL(blob);
        window.open(this.pdfSrc);// 新窗口打开，借用浏览器去打印
      });
    },

// base64转文件
    dataURLtoBlob(baseData) {
      var bstr = atob(baseData);
      var n = bstr.length;
      var u8arr = new Uint8Array(n);
      while (n--) {
        u8arr[n] = bstr.charCodeAt(n);
      }
      this.transData = new Blob([u8arr], { type: `application/pdf;charset-UTF-	8;application/vnd.ms-excel` });
    },
    

getPDFDataOfYL({ fileId: item.DOC }).then(res => {
        this.loading = false;
        if (res.data.data) {
          // 预览
          if (flag !== 'DOWN') {
            this.basePdf = res?.data?.data;
            const basedata = res.data.data;
            this.pdfContent = 'data:application/pdf;base64,' + basedata;
            this.src = pdf.createLoadingTask({ url: this.pdfContent, CMapReaderFactory });
            this.src.promise.then(pdf => {
              this.numPages = pdf.numPages;
            });
          } else { // 下载
            this.dataURLtoBlob(res?.data?.data);
            var reader = new FileReader();
            reader.readAsDataURL(this.transData);

            reader.onload = function (e) {
              // 兼容IE
              if (window.navigator.msSaveOrOpenBlob) {
                var bstr = atob(e.target.result.split(',')[1]);
                var n = bstr.length;
                var u8arr = new Uint8Array(n);
                while (n--) {
                  u8arr[n] = bstr.charCodeAt(n);
                }
                var blob = new Blob([u8arr]);
                window.navigator.msSaveOrOpenBlob(blob, item.DOCNAME);
              } else {
                // 转换完成，创建一个a标签用于下载
                const a = document.createElement('a');
                a.download = item.DOCNAME; // 这里写你的文件名
                a.href = e.target.result;
                document.body.appendChild(a);
                a.click();
                document.body.removeChild(a);
              }
            };
          }
        }
      });