package com.stone.util;  

import java.io.UnsupportedEncodingException;  

import sun.misc.*;  

public class Base64 {

    // 加密

    public static String getBase64(String str) {

        byte[] b = null;

        String s = null;

        try {

            b = str.getBytes("utf-8");

        } catch (UnsupportedEncodingException e) {

            e.printStackTrace();

        }

        if (b != null) {

            s = new BASE64Encoder().encode(b);

        }

        return s;

    }  

    // 解密

    public static String getFromBase64(String s) {

        byte[] b = null;

        String result = null;

        if (s != null) {

            BASE64Decoder decoder = new BASE64Decoder();

            try {

                b = decoder.decodeBuffer(s);

                result = new String(b, "utf-8");

            } catch (Exception e) {

                e.printStackTrace();

            }

        }

        return result;

    }

}