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); }}