Java JDK1.7对字符串的BASE64编码解码方法

package cn.itcast;

import java.io.IOException;
import java.io.UnsupportedEncodingException;

import org.junit.Test;

import sun.misc.BASE64Decoder;

/*
 * @author soto
 * BASE64编码 解码
 * */
public class Demo1 {

 @Test
 public void fun1() throws IOException{
  //BASE64编码 
  String str = "hello";
  byte[] bytes = str.getBytes("utf-8");
  str = new sun.misc.BASE64Encoder().encode(bytes);
  System.out.println("编码后... "+str);

  //BASE64解码
  BASE64Decoder decoder = new BASE64Decoder();
  byte[] b = decoder.decodeBuffer(str);

  str = new String(b,"utf-8");
  System.out.println("解码后... " + str);

 }

}