MultipartFile 类型文件批量压缩到一个zip

MultipartFile 类型文件批量压缩到一个zip

private String mkZip(MultipartFile[] targetFiles) throws IOException {
        List<File> files=new ArrayList<>();
        for (MultipartFile m:targetFiles) {
            String dateString = DateUtil.getDateString(new Date(), DateUtil.DATE_TIME_PATTERN);
            File file = new File("C:/temp", dateString + m.getOriginalFilename());
            file.setWritable(true, false);
            m.transferTo(file);
            files.add(file);
        }
        File zip = new File("C:/temp/"+System.currentTimeMillis() + ".zip");
        zip.setWritable(true, false);
        zip.createNewFile();
        String fileFolders = zipFileFolders(files, zip);
       
        return fileFolders ;
    }

 /**
     * 功能:压缩多个文件，文件夹成一个zip文件
     * @param srcfile：源文件列表
     * @param zipfile：压缩后的文件
     *
     */
    public String zipFileFolders(List<File> srcfile, File zipfile) {
        byte[] buf = new byte[1024];
        ZipOutputStream out = null;
        try {
            //ZipOutputStream类：完成文件或文件夹的压缩
            out = new ZipOutputStream(new FileOutputStream(zipfile));
            for (int i = 0; i < srcfile.size(); i++) {
                FileInputStream in = new FileInputStream(srcfile.get(i));
                String filePath="";
                if (filePath == null)
                    filePath = "";
                else
                    filePath += "/";
                out.putNextEntry(new ZipEntry(filePath + srcfile.get(i).getName()));
                int len;
                while ((len = in.read(buf)) > 0) {
                    out.write(buf, 0, len);
                }
                out.closeEntry();
                in.close();
            }
            out.close();
            return zipfile.getAbsolutePath();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return "";
    }

本文地址：https://blog.csdn.net/weixin_45241756/article/details/112007441