Base64 实例 ?

   1. 什么是Base64 ?

       按照RFC2045的定义，Base64被定义为：Base64内容传送编码

 

  被设计用来把任意序列的8位字节描述为一种不易被人直接识别的形式。

 

（The Base64 Content-Transfer-Encoding is designed to represent

 

 arbitrary sequences of octets in a form that need not be humanly readable.）

  2.Base64加密和解密实例?

package org.test.md5;

import java.io.IOException;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

/**
 * Base64加密和解密
 * @author keven.kan
 *
 */
public class Base64 {

    private static BASE64Encoder encoder = new BASE64Encoder();    
    private static BASE64Decoder decoder = new BASE64Decoder();    
    public void BASE64Coding() {}   

    //加密方法
    public static String encode (String s){   

        return encoder.encode(s.getBytes());   
    }  

    //解密方法
    public static String decode (String s){   

        try {   
            byte[] temp = decoder.decodeBuffer(s);   
            return new String(temp);  
        } catch (IOException io) {    
            io.printStackTrace();
        }   
        return s;   
    }  

    //测试Main
    /*public static void main(String args[]){
        String str="kanjingcai";   
        System.out.println("加密");   
        System.out.println(Base64.encode(str));   

        System.out.println("解密");   
        System.out.println(Base64.decode(Base64.encode(str)));
    }*/
}