java base64编码和解码

import java.io.IOException;public class test {/** * 编码 * @param filecontent * @return String */public static String encode(byte[] bstr){return new sun.misc.BASE64Encoder().encode(bstr);}/** * 解码 * @param filecontent * @return string */public static byte[] decode(String str){byte[] bt = null;try {sun.misc.BASE64Decoder decoder = new sun.misc.BASE64Decoder();bt = decoder.decodeBuffer( str );} catch (IOException e) {e.printStackTrace();}return bt;}/** * @param args */public static void main(String[] args) {test te = new test();String aa = "更多更多";aa = te.encode(aa.getBytes());System.out.println("----aa:"+aa);String str = aa;String str2 = new String(te.decode(str));System.out.println("-----str2:"+str2);}}