Download multiple files (with zip)

front end

show(e) {
    this.axios({
        url: this.url.labelPrint,
        method: 'post',
        responseType: 'blob',
        type: 'multipart/form-data',
        timeout: 150000,
        data: {
        //Encapsulate the parameters to be used
            sampleNumber: e.reportNumber,
            sampleName: e.sampleName,
            sampingDate: e.sampingDate,
            deliveryDate: e.deliveryDate,
            deliveryDates: e.deliveryDates,
            deliveryAddress: e.deliveryAddress,
            standbyWhere: e.standbyWhere,
            sampleQuantity: e.sampleQuantity,
            key: e.id
        }
    }).then(res => {
        const elink = document.createElement('a')
        elink.style.display = 'none'
        document.body.appendChild(elink);
//The name of the duplicate name
            const fileName = e.reportNumber + e.sampleName+'.zip'
            elink.download = fileName
            let binaryData = [];
            binaryData.push(res);
            elink.href = window.URL.createObjectURL(new Blob(binaryData));
            elink.click();
            URL.revokeObjectURL(elink.href); // Release the URL object
            this.$message.success("Download succeeded");
        document.body.removeChild(elink);
        
    })
},

java background

ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
try (ZipOutputStream zipOutputStream = new ZipOutputStream(outputStream)) {

// Generate multiple files
    for (int a = shu; a > 0; a--) {         // Create each label docx file         String fileName = sampleNumber + '-' + a + sampleName + "label.docx";         String filePath = csbcbhUrl.getUrlFile() + fileName;         contractTestReportController.parse(templatePath, templateName, filePath, map);         // Add the label file to the Zip file         byte[] buffer = new byte[1024];         FileInputStream inputStream = new FileInputStream( filePath);         zipOutputStream.putNextEntry(new ZipEntry(fileName));         int len;         while ((len = inputStream.read(buffer)) != -1) {             zipOutputStream.write(buffer, 0, len);         }         inputStream.close ();













        zipOutputStream.closeEntry();
        // Record the file name of the Zip file
        objects.add(filePath);
    }
    // Set the response type and header information of the Zip file
    httpServletResponse.setContentType("application/zip");
    httpServletResponse.setHeader("Content -Disposition", "attachment; filename=\"sample_labels.zip\"");
}
// Download all the bytes of the Zip file to the client
ServletOutputStream out = httpServletResponse.getOutputStream();
outputStream.writeTo(out);
out .flush();
out.close();
outputStream.close();

// Delete temporarily generated files
for (String filePath : objects) {     File file = new File(filePath);     file.delete(); }