unicode编码与解码

unicode编码与解码，代码如下

 package com.fenqiguanjia.api.services;

 /**
  * Created by daixianjun on 2017/9/3.
  */

 import org.apache.commons.lang.StringUtils;

 public class UnicodeUtils {

     /***
      * unicode 编码与解码
      * v\u003d0; cookie2\u003d161b41dbe306333ef031fccf315df69a;
      * 转成： v=0; cookie2=161b41dbe306333ef031fccf315df69a;
      * @param unicode
      * @return
      */
     public static String unicode2String(String unicode){
         if(StringUtils.isBlank(unicode))return null;
         StringBuilder sb = new StringBuilder();
         int i = -1;
         int pos = 0;

         while((i=unicode.indexOf("\\u", pos)) != -1){
             sb.append(unicode.substring(pos, i));
             if(i+5 < unicode.length()){
                 pos = i+6;
                 sb.append((char)Integer.parseInt(unicode.substring(i+2, i+6), 16));
             }
         }

         if (pos < unicode.length()){
             sb.append(unicode.substring(pos));
         }

         return sb.toString();
     }

     public static String string2Unicode(String string) {

         if(StringUtils.isBlank(string))return null;
         StringBuffer unicode = new StringBuffer();

         for (int i = 0; i < string.length(); i++) {

             // 取出每一个字符
             char c = string.charAt(i);

             // 转换为unicode
             unicode.append("\\u" + Integer.toHexString(c));
         }

         return unicode.toString();
     }
 }