使用Zip4j实现zip文件的加密

喜欢ヅ旅行 2022-12-01 15:47 493阅读 0赞

背景：对zip文件进行一个小加密

依赖：

<dependency>
        <groupId>net.lingala.zip4j</groupId>
        <artifactId>zip4j</artifactId>
        <version>1.3.2</version>
    </dependency>

controller：

@RequestMapping("/zips")
    public void zips(HttpServletRequest request,HttpServletResponse response){
          zipEncryService.zip(request,response);
    }

service：

@Override
    public void zip(HttpServletRequest request, HttpServletResponse response) {
        try {
    
            //获取输出到页面的流
            response.setContentType("application/x-msdownload;charset=utf-8");
            response.addHeader("Content-Disposition", "attachment;filename=" + "aaa.zip");
            response.setBufferSize(81920);
            OutputStream os = response.getOutputStream();
    
            //将nas文件读取到流中
            FileInputStream fis = new FileInputStream("F:\\aaa.zip");
            ByteArrayOutputStream bos2 = new ByteArrayOutputStream();
            byte[] b = new byte[1024];
            int n;
            int off = 0;
            while ((n = fis.read(b)) != -1) {
                bos2.write(b, off, n);
            }
            fis.close();
    
            ZipOutputStream outputStream = new ZipOutputStream(os,new ZipModel());
            ZipParameters parameters = new ZipParameters();
            parameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);
            parameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);
            parameters.setSourceExternalStream(true);
            parameters.setFileNameInZip("123.zip");
            parameters.setEncryptFiles(true);
            parameters.setEncryptionMethod(Zip4jConstants.ENC_METHOD_STANDARD);
            parameters.setPassword("1234");
    
            outputStream.putNextEntry(null, parameters);
            outputStream.write(bos2.toByteArray());
    
            bos2.flush();
            bos2.close();
    
            outputStream.flush();
            outputStream.closeEntry();
            outputStream.finish();
            outputStream.close();
    
            os.flush();
        } catch (Exception e){
                e.printStackTrace();
        }