DIEA
import sun.misc.BASE64Encoder;import sun.misc.BASE64Decoder;// 将 s 进行 BASE64 编码public static String getBASE64(String s) {if (s == null) return null;return (new sun.misc.BASE64Encoder()).encode( s.getBytes() );}// 将 BASE64 编码的字符串 s 进行解码public static String getFromBASE64(String s) {if (s == null) return null;BASE64Decoder decoder = new BASE64Decoder();try {byte[] b = decoder.decodeBuffer(s);return new String(b);} catch (Exception e) {return null;}}