package util;

import java.util.StringTokenizer;

public class Unicode {
	
	/**
 * 
 * unicode 转换成 中文
 * @param theString
 * @return
 */
 
 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 = '\t';
 else if (aChar == 'r')
 aChar = '\r';
 
 else if (aChar == 'n')
 
 aChar = '\n';
 
 else if (aChar == 'f')
 
 aChar = '\f';
 
 outBuffer.append(aChar);
 
 }
 
 } else
 
 outBuffer.append(aChar);
 
 }
 
 return outBuffer.toString();
 
 }
	 
	 
	
	public static String toUnicodeString(String s) {
	 
		
		try {
			if(s==null){
				return "";
			}
			StringBuffer sb = new StringBuffer();
			for (int i = 0; i < s.length(); i++) {
			 char c = s.charAt(i);
			 if (c >= 0 && c <= 255) {
			 sb.append(c);
			 }
			 else {
			 sb.append("\\u"+Integer.toHexString(c));
			 }
			}
			return sb.toString();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return s;
		}
	 }
		 
	

}