JAVA 过滤中文

过滤字符串中的中文

判断是否包含中文

public static boolean isContainChinese(String str) {
        Pattern p = Pattern.compile("[\u4e00-\u9fa5]");
        Matcher m = p.matcher(str);
        if (m.find()) {
            return true;
        }
        return false;
    }

判断单个字符是否为中文

public static 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;
	}

过滤中文，拼接字符串

public static String filterChinese(String str) {
		 String result = str;
		 boolean Containflag = isContainChinese(str);
		 if (Containflag) {
		  // 拼接字符
			 StringBuffer strBu = new StringBuffer();
		  // 单个字符判断
			 boolean singleflag = false;
			 char[] strArray = str.toCharArray();
			 for (int i = 0; i < strArray.length; i++) {
				 singleflag = isChinese(strArray[i]);
				 if (!singleflag) {
					 strBu.append(strArray[i]);
				 }
			 }
			 result = strBu.toString();
	 	 }
		 return result;
	 }