public static void main(String[] args){

// jdk自带的BASE64 加解密工具

        String password="lmh980517";

        BASE64Encoder base64Encoder = new BASE64Encoder();

        String encode = base64Encoder.encode(password.getBytes());  // 加密

        System.out.println("加密为字符串:  " + encode);

        BASE64Decoder decoder = new BASE64Decoder();

        try {

            String decode = new String ( decoder.decodeBuffer(encode)); // 解密

            System.out.println("解密为:  " + decode);

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

}