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字符串截取(中文算两个位置)

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/**
    * 中文字符占两个位置，截取字符串
    *
    * @param ori
    * @param start
    * @param end
    * @return
    */
   public static String getSubString(String ori, int start, int end) {
       int index = 1;
       StringBuilder result = new StringBuilder();

       for (char cha : ori.toCharArray()) {
           if (index >= start && index <= end) {
               result.append(cha);
           }
           if (isChineseByScript(cha) || isChinesePuctuation(cha)) {
               index += 2;
           } else {
               index += 1;
           }
       }
       return result.toString();
   }

   private static boolean isChineseByScript(char c) {
       Character.UnicodeScript sc = Character.UnicodeScript.of(c);
       if (sc == Character.UnicodeScript.HAN) {
           return true;
       }
       return false;
   }

   private static boolean isChinesePuctuation(char c) {
       Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
       if (ub == Character.UnicodeBlock.GENERAL_PUNCTUATION
               || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
               || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS
               || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_FORMS
               || ub == Character.UnicodeBlock.VERTICAL_FORMS) {//jdk1.7
           return true;
       }
       return false;
   }