java中unicode和中文相互转换

 package test.com.gjob.services;
    import java.util.Properties;
     public class Test { 
            public static void main(String[] args) { 
            String s = "简介"; 
           String tt = gbEncoding(s); 
    //       String tt1 = "你好，我想给你说一个事情";
           System.out.println(decodeUnicode("\u7b80\u4ecb")); 
    //       System.out.println(decodeUnicode(tt1)); 
           System.out.println(HTMLDecoder.decode("中国"));
           String s1 = "u7b80u4ecb";
           System.out.println(s.indexOf("\"));
          } 
         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 + "\u" + 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("\u", 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(); 
              } 
          } 

public static String decodeUnicode(String theString) {    
  
     char aChar;    
  
      int len = theString.length();    
  
     StringBuffer outBuffer = new StringBuffer(len);    
  
     for (int x = 0; x < len;) {    
  
      aChar = theString.charAt(x++);    
  
      if (aChar == '\') {    
  
       aChar = theString.charAt(x++);    
  
       if (aChar == 'u') {    
  
        // Read the xxxx    
  
        int value = 0;    
  
        for (int i = 0; i < 4; i++) {    
  
         aChar = theString.charAt(x++);    
  
         switch (aChar) {    
  
         case '0':    
  
         case '1':    
  
         case '2':    
  
         case '3':    
  
        case '4':    
  
         case '5':    
  
          case '6':    
           case '7':    
           case '8':    
           case '9':    
            value = (value << 4) + aChar - '0';    
            break;    
           case 'a':    
           case 'b':    
           case 'c':    
           case 'd':    
           case 'e':    
           case 'f':    
            value = (value << 4) + 10 + aChar - 'a';    
           break;    
           case 'A':    
           case 'B':    
           case 'C':    
           case 'D':    
           case 'E':    
           case 'F':    
            value = (value << 4) + 10 + aChar - 'A';    
            break;    
           default:    
            throw new IllegalArgumentException(    
              "Malformed   \uxxxx   encoding.");    
           }    
  
         }    
          outBuffer.append((char) value);    
         } else {    
          if (aChar == 't')    
           aChar = '	';    
          else if (aChar == 'r')    
           aChar = '
';    
  
          else if (aChar == 'n')    
  
           aChar = '
';    
  
          else if (aChar == 'f')    
  
           aChar = 'f';    
  
          outBuffer.append(aChar);    
  
         }    
  
        } else   
  
        outBuffer.append(aChar);    
  
       }    
  
       return outBuffer.toString();    
  
      }