compress

	private static void encodeTXT(String src,String des) throws IOException {
		byte[] bytes = Files.readAllBytes(Paths.get(src));

		Files.write(Paths.get(des), base64Encoder(gZip(new String(bytes))).getBytes());
	}

	private static void decodeTXT(String src,String des) throws Exception {
		byte[] bytes = Files.readAllBytes(Paths.get(src));
		Files.write(Paths.get(des), unGZip(base64Decoder(new String(bytes))).getBytes());
	}

	
	public static byte[] gZip(String s) {
		if (s == null || "".equals(s.trim()))
			return null;
		try {
			byte[] b = null;
			ByteArrayOutputStream bos = new ByteArrayOutputStream();
			GZIPOutputStream gzip = new GZIPOutputStream(bos);
			gzip.write(s.getBytes());
			gzip.finish();
			gzip.close();
			b = bos.toByteArray();
			bos.close();
			return b;
		} catch (Exception ex) {
			ex.printStackTrace();
			throw new RuntimeException(ex);
		}
	}

	/**
	 * 解压
	 *
	 * @param data
	 * @return
	 */
	public static String unGZip(byte[] data) {
		byte[] b = null;
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		try {
			ByteArrayInputStream bis = new ByteArrayInputStream(data);
			GZIPInputStream gzip = new GZIPInputStream(bis);
			byte[] buf = new byte[1024];
			int num = -1;
			while ((num = gzip.read(buf, 0, buf.length)) != -1) {
				baos.write(buf, 0, num);
			}
			b = baos.toByteArray();
			baos.flush();
			baos.close();
			gzip.close();
			bis.close();
		} catch (Exception ex) {
			ex.printStackTrace();
		}
		return new String(baos.toByteArray());
	}

	/**
	 * 用BASE64编码
	 */
	public static String base64Encoder(byte[] b) {
		if (b == null)
			return null;
		return new BASE64Encoder().encode(b);
	}

	/**
	 * 用BASE64解码
	 */
	public static byte[] base64Decoder(String s){
		if (s == null)
			return null;
		try {
			return new BASE64Decoder().decodeBuffer(s);
		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}