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); } }