java Base64 编码解码

	/**
	 * 编码
	 * @param input
	 * @return
	 */
	
	public static byte[] encode(byte[] input) {
		byte[] b = null;
		try {
			if (input != null && input.length > 0) {
				BASE64Encoder base64 = new BASE64Encoder();
				b = base64.encodeBuffer(input).trim().getBytes();
			}
		} catch (Exception ex) {
			ex.printStackTrace();
		}
		return b;

	}
	
	/**
	 * 解码
	 * @param input
	 * @return
	 */
	public static byte[] decode(byte[] input) {
		try {
			if (input != null && input.length > 0) {
				BASE64Decoder bd = new BASE64Decoder();
				ByteArrayInputStream bis = new ByteArrayInputStream(input);
				input = bd.decodeBuffer(bis);
			}
		} catch (Exception ex) {
			ex.printStackTrace();
		}
		return input;
	}