Java判断中文及中文字符转unicode

1、java中判断字符是否为中文

/**
  * 判断是否为中文字符
  * @param c
  * @return
  */
public  boolean isChinese(char c) {
     Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
     if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS
            || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
            || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
            || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION
            || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
            || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS) {
        return true;
    }
    return false;
}

2、Java中中文字符转unicode

/**
  * 把中文转成Unicode码
  * @param str
  * @return
  */
public String chinaToUnicode(String str){
     String result="";
     for (int i = 0; i < str.length(); i++){
          int chr1 = (char) str.charAt(i);
          if(chr1>=19968&&chr1<=171941){//汉字范围 \u4e00-\u9fa5 (中文)
              result+="\\u" + Integer.toHexString(chr1);
          }else{
              result+=str.charAt(i);
          }
     }
     return result;
}

知道了Java中中文字符在unicode字符集中的存储规则，也为后面Java中实现字母索引中文建立了基础。

原文：http://orgcent.com/java-check-chinese-unicode/