java打zip包

public class TestZip {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String name = "a.txt";
		String name2 = "b.txt";
		File f1 = new File(name);
		File f2 = new File(name2);
		List<File> files = new ArrayList<File>();
		files.add(f1);
		files.add(f2);
		File out = new File("x.zip");
		
		ZipFiles(files, out);
		
		String[] fnames = {"a.txt","b.txt"};
		ZipFiles(fnames, "c.zip");
		
	}
	
	public static void ZipFiles(String[] ins, String out){
		List<String> in = Arrays.asList(ins);
		ZipFiles(in, out);
	}
	
	public static void ZipFiles(List<String> ins, String out){
		List<File> inFiles = new ArrayList<File>();
		File f = null;
		for(String s: ins){
			f = new File(s);
			if(f.exists()){
				inFiles.add(f);
			}
			f = null;
		}
		
		ZipFiles(inFiles, new File(out));
	}

	/**
	 * 将inFiles指定的文件, 按zip压缩为outFile
	 * @param inFiles
	 * @param outFile
	 */
	public static void ZipFiles(List<File> inFiles, File outFile) {
		byte[] buff = new byte[4096];
		int len = -1;

		ZipOutputStream zipout = null;
		try {
			zipout = new ZipOutputStream(new FileOutputStream(outFile));
//			zipout.setLevel(ZipOutputStream.STORED);
		} catch (FileNotFoundException e1) {
			e1.printStackTrace();
		}

		ZipEntry entry = null;

		InputStream in = null;

		for (File f : inFiles) {
			try {
				in = new FileInputStream(f);
				entry = new ZipEntry(f.getName());
				zipout.putNextEntry(entry);

				while ((len = in.read(buff)) != -1) {
					zipout.write(buff, 0, len);
				}

				zipout.flush();

			} catch (Exception e) {
				// TODO: handle exception
			} finally {
				if (in != null) {
					try {
						in.close();
					} catch (IOException e) {
						e.printStackTrace();
					}
				}

				try {
					zipout.closeEntry();
				} catch (IOException e) {
					e.printStackTrace();
				}

			}
		}
		try {
			zipout.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}