java解压缩文件夹

public class zipUtil {

    public static void main(String[] args) throws IOException {
        zipUtil zipUtil = new zipUtil();
        zipUtil.zip(new File("test3"), new File("jieya.zip"));
        zipUtil.unZip(new File("jieya.zip"), new File("test5"));
    }


    
    public void zipFile(File file, String name, ZipOutputStream zipOutPutStream) throws IOException {
        zipOutPutStream.putNextEntry(new ZipEntry(name));
        FileInputStream inputStream = new FileInputStream(file);
        int len = 0;
        byte[] bytes = new byte[1024];
        while ((len = inputStream.read(bytes)) != -1){
            zipOutPutStream.write(bytes);
        }
        zipOutPutStream.closeEntry();
    }

    
    public void zipDir(File file, String name, ZipOutputStream zipOutputStream) throws IOException {
        if (file.isDirectory()){
            File[] files = file.listFiles();
            zipOutputStream.putNextEntry(new ZipEntry(name + "/"));
            zipOutputStream.closeEntry();
            if (files != null){
                for (File file1 : files) {
                    if (file1.isFile()){
                        zipFile(file1, name + "/" + file1.getName(), zipOutputStream);
                    } else {
                        zipDir(file1, name + "/" + file1.getName(), zipOutputStream);
                    }
                }
            }

        }

    }

    
    public void zip(File files, File destFile) throws IOException {

        if(files == null){
            return;
        }

        FileOutputStream fileOutputStream = new FileOutputStream(destFile);
        BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(fileOutputStream);
        ZipOutputStream zipOutputStream = new ZipOutputStream(bufferedOutputStream);

        //设置压缩等级
        zipOutputStream.setLevel(5);

        //读取所有文件
        if (files.isDirectory()){
            zipDir(files, files.getName(), zipOutputStream);
        } else {
            zipFile(files, files.getName(), zipOutputStream);
        }

        zipOutputStream.closeEntry();
        zipOutputStream.close();
        fileOutputStream.close();

    }


    
    public void unZip(File zipFile, File destFile) throws IOException {
        if (zipFile == null){
            return;
        }

        if (!destFile.exists()){
            destFile.mkdirs();
        }


        //读入流
        ZipInputStream zipInputStream = new ZipInputStream(new FileInputStream(zipFile));


        ZipEntry zipEntry;

        while ((zipEntry = zipInputStream.getNextEntry()) != null){
            //如果是文件夹，就创建文件夹
            if (zipEntry.isDirectory()){
                new File(destFile.getName() + "/" + zipEntry.getName()).mkdirs();
            } else {
                String name = zipEntry.getName();
                File f = new File(destFile, name);
                FileOutputStream fileOutputStream = new FileOutputStream(f, false);
                byte[] bytes = new byte[1024];
                int len = 0;
                while ((len = zipInputStream.read(bytes)) != -1){
                    fileOutputStream.write(bytes, 0, len);
                }
                fileOutputStream.close();
            }

            zipInputStream.closeEntry();


        }

        zipInputStream.close();

    }

    





}