Java 完美判断中文字符

来源：互联网发布：24周胎儿发育正常数据编辑：程序博客网时间：2024/05/22 23:53

转自:http://www.micmiu.com/lang/java/java-check-chinese/

Java判断一个字符串是否有中文一般情况是利用Unicode编码(CJK统一汉字的编码区间：0x4e00–0x9fbb)的正则来做判断，但是其实这个区间来判断中文不是非常精确，因为有些中文的标点符号比如：，。等等是不能识别的。

// 根据Unicode编码完美的判断中文汉字和符号

35    private static boolean isChinese(char c) {

36        Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);

37        if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS

38                || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS

39                || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A

40                || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B

41                || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION

42                || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS

43                || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION) {

44            return true;

45        }

46        return false;

47    }