How to compress and decompress zip files in Java

Code:

public class ZipUtil {

    /**
     * 压缩文件/文件夹
     *
     */
    public static void compress(String srcFilePath, String destFilePath) {
        File src = new File(srcFilePath);
        if (!src.exists()) {
            throw new RuntimeException(srcFilePath + "不存在");
        }
        File zipFile = new File(destFilePath);
        try {
            FileOutputStream fos = new FileOutputStream(zipFile);
            CheckedOutputStream cos = new CheckedOutputStream(fos, new CRC32());
            ZipOutputStream zos = new ZipOutputStream(cos);
            String baseDir = "";
            compressbyType(src, zos, baseDir);
            zos.close();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    private static void compressbyType(File src, ZipOutputStream zos, String baseDir) {
        if (!src.exists())
            return;
        System.out.println("压缩" + baseDir + src.getName());
        if (src.isFile()) {
            compressFile(src, zos, baseDir);
        } else if (src.isDirectory()) {
            compressDir(src, zos, baseDir);
        }
    }


    /**
     * 压缩文件
     */
    private static void compressFile(File file, ZipOutputStream zos, String baseDir) {
        if (!file.exists())
            return;
        try {
            BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
            ZipEntry entry = new ZipEntry(baseDir + file.getName());
            zos.putNextEntry(entry);
            int count;
            byte[] buf = new byte[8019];
            while ((count = bis.read(buf)) != -1) {
                zos.write(buf, 0, count);
            }
            bis.close();
        } catch (Exception e) {
            // TODO: handle exception
        }
    }


    /**
     * 压缩文件夹
     *
     */
    private static void compressDir(File dir, ZipOutputStream zos, String baseDir) {
        if (!dir.exists())
            return;
        File[] files = dir.listFiles();
        if(files.length == 0){
            try {
                zos.putNextEntry(new ZipEntry(baseDir + dir.getName() + File.separator));
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        for (File file : files) {
            compressbyType(file, zos, baseDir + dir.getName() + File.separator);
        }
    }


    /**
     * 解压文件/文件夹
     */
    public static void decompress(String srcPath, String dest) throws Exception {
        File file = new File(srcPath);
        if (!file.exists()) {
            throw new RuntimeException(srcPath + "所指文件不存在");
        }
        ZipFile zf = new ZipFile(file);
        Enumeration entries = zf.entries();
        ZipEntry entry = null;
        while (entries.hasMoreElements()) {
            entry = (ZipEntry) entries.nextElement();
            System.out.println("解压" + entry.getName());
            if (entry.isDirectory()) {
                String dirPath = dest + File.separator + entry.getName();
                File dir = new File(dirPath);
                dir.mkdirs();
            } else {
                // 表示文件
                File f = new File(dest + File.separator + entry.getName());
                if (!f.exists()) {
                    //String dirs = FileUtils.getParentPath(f);
                    String dirs = f.getParent();
                    File parentDir = new File(dirs);
                    parentDir.mkdirs();
                }
                f.createNewFile();
                // 将压缩文件内容写入到这个文件中
                InputStream is = zf.getInputStream(entry);
                FileOutputStream fos = new FileOutputStream(f);
                int count;
                byte[] buf = new byte[8192];
                while ((count = is.read(buf)) != -1) {
                    fos.write(buf, 0, count);
                }
                is.close();
                fos.close();
            }
        }
    }

    public static void main(String[] args) throws Exception {
//        compress("/Users/liyinlong/lyl/test","/Users/liyinlong/lyl/test.zip");

        decompress("/Users/liyinlong/lyl/test.zip", "/Users/liyinlong/lyl/test");
    }
}

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