中文与Unicode表示转换--java实现

public class Test {
 public static void main(String[] args) {
  String s = "简介";
  String tt = gbEncoding(s);
  System.out.println(decodeUnicode(tt));
 }

 public static String gbEncoding(final String gbString) {
  char[] utfBytes = gbString.toCharArray();
  String unicodeBytes = "";
  for (int byteIndex = 0; byteIndex < utfBytes.length; byteIndex++) {
   String hexB = Integer.toHexString(utfBytes[byteIndex]);
   if (hexB.length() <= 2) {
    hexB = "00" + hexB;
   }
   unicodeBytes = unicodeBytes + "" + hexB;
  }
  System.out.println("unicodeBytes is: " + unicodeBytes);
  return unicodeBytes;
 }

 public static String decodeUnicode(final String dataStr) {
  int start = 0;
  int end = 0;
  final StringBuffer buffer = new StringBuffer();
  while (start > -1) {
   end = dataStr.indexOf("", start + 2);
   String charStr = "";
   if (end == -1) {
    charStr = dataStr.substring(start + 2, dataStr.length());
   } else {
    charStr = dataStr.substring(start + 2, end);
   }
   char letter = (char) Integer.parseInt(charStr, 16); // 16进制parse整形字符串。
   buffer.append(new Character(letter).toString());
   start = end;
  }
  return buffer.toString();
 }
}

 

出处:http://ekumen.javaeye.com/blog/265613