字符串转化为unicode编码

字符串转化为unicode编码

 

package com.bensin.util;

import java.io.UnsupportedEncodingException;

/**
 * 
 * @author Ben.Sin
 *
 */
public class UnicodeUtil {
	/**
	 * 
	 * @param gbString
	 * @return
	 */
	public static String encodeUnicode(final String data){
		char[] utfBytes = data.toCharArray();
		String unicodeBytes = "";
		
		for (char utfByte : utfBytes){
			String hexByte = Integer.toHexString(utfByte);
			
			if (hexByte.length() <= 2){
				hexByte = "00" + hexByte;
			}
			
			unicodeBytes += "\\u" + hexByte;
		}
		
		return unicodeBytes;
	}
	
	public static String decodeUnicode(final String data){
		int start = 0;
		int end = 0;
		
		final StringBuilder buffer = new StringBuilder();
		
		while(start > -1){
			end = data.indexOf("\\u", start + 1);
			String charStr = "";
			
			if (end == -1){
				charStr = data.substring(data.length() - 4, data.length() );
			} else {
				charStr = data.substring(end - 4, end);
			}
			
			char letter = (char)Integer.parseInt(charStr, 16);
			
			buffer.append(new Character(letter).toString());
			start = end;
		}
		
		return buffer.toString();
	}
	
	public static void main(String[] args) throws UnsupportedEncodingException{
		String str = "非常抱歉，暂不支持该文件类型！";
				
		String unicode = encodeUnicode(str);
		System.out.println(unicode);
		
		String decode = decodeUnicode(unicode);

		System.out.println(decode);
	}
}