package com.lzkj.csp.bas.util;

 @SuppressWarnings("restriction")

 public class Base64Utils {

     private final static sun.misc.BASE64Encoder base64Encoder = new sun.misc.BASE64Encoder();

     private final static sun.misc.BASE64Decoder base64Decoder = new sun.misc.BASE64Decoder();

     /**

      * Base64-encode the given byte array to a String.

      *

      * @param src the original byte array (may be {@code null})

      * @return the encoded byte array as a UTF-8 String (or {@code null} if the

      * input was {@code null})

      */

     public static String encodeToString(byte[] src) {

         if (src == null)

             return null;

         return base64Encoder.encode(src);

     }

     /**

      * Base64-encode the given byte array to a String.

      *

      * @param src           the original byte array (may be {@code null})

      * @param followRFC2045 true Encoded lines be no more than 76 characters long

      *                      false Encoded lines be more than 76 characters long

      * @return

      * @see <a href="https://tools.ietf.org/html/rfc2045"/>

      * @see <a href="https://en.wikipedia.org/wiki/Base64#MIME"/>

      * @see <a href="https://en.wikipedia.org/wiki/Request_for_Comments"/>

      */

     public static String encodeToString(byte[] src, boolean followRFC2045) {

         if (src == null)

             return null;

         String encode = base64Encoder.encode(src);

         if (!followRFC2045) {

             encode = encode.replaceAll(System.getProperty("line.separator"), "");

         }

         return encode;

     }

     /**

      * Base64-decode the given byte array from an UTF-8 String.

      *

      * @param src the encoded UTF-8 String (may be {@code null})

      * @return the original byte array (or {@code null} if the input was

      * {@code null})

      */

     public static byte[] decodeFromString(String src) {

         if (src == null)

             return null;

         try {

             byte[] decodeBuffer = base64Decoder.decodeBuffer(src);

             return decodeBuffer;

         } catch (Exception e) {

             throw new RuntimeException("decodeFromString failed.", e);

         }

     }

 }