Batch download files

    public static void main(String[] args) throws IOException {
    
        DataOutputStream os = null;
        ZipOutputStream zipOs = null;
        List<String> fileUrls = Arrays.asList("D:\\test\\test1.txt", "D:\\test\\\\test.txt");
        try {
    
            File outFile = new File("D:\\test\\zzz.zip");
            FileOutputStream fos = new FileOutputStream(outFile);
            zipOs = new ZipOutputStream(new BufferedOutputStream(fos));
            // Set compression method 
            zipOs.setMethod(ZipOutputStream.DEFLATED);
            // Traverse file information （ Mainly get the file name / File path, etc ）
            for (String t : fileUrls) {
    
                File file = new File(t);
                FileInputStream fis = null;
                ByteArrayOutputStream bos = new ByteArrayOutputStream(1000);
                fis = new FileInputStream(file);
                byte[] b = new byte[1000];
                int n;
                while ((n = fis.read(b)) != -1) {
    
                    bos.write(b, 0, n);
                }
                byte[] data = bos.toByteArray();
                // file name （ Contains the suffix , Such as ： test .pdf）
                String name = t;
                log.info("batchDownloadFile:[fileName:{}]", name);
                // add to ZipEntry, And will ZipEntry Write file stream to 
                zipOs.putNextEntry(new ZipEntry(name));
                // Read in the content of the file you need to download , Pack to zip file 
                os = new DataOutputStream(zipOs);
                os.write(data);
                // Closed flow 
                zipOs.closeEntry();
            }
            outFile.createNewFile();
        } catch (Exception e) {
    

        } finally {
    
            try {
    
                if (os != null) {
    
                    os.flush();
                    os.close();
                }
                if (zipOs != null) {
    
                    zipOs.close();
                }
            } catch (IOException e) {
    
                log.error(" Flow closing exception {}", e);
            }
        }
    }