Java正则表达式-验证数字字母汉字

public static boolean isNotFilter(String string){
		if (StringUtils.isBlank(string)) {
			return true;
		}
       // String regex="^[a-zA-Z0-9\u4E00-\u9FA5]+$";
		String regex="/[^\u4e00-\u9fa5a-zA-Z0-9]/ig";
        Pattern pattern = Pattern.compile(regex);
        Matcher match=pattern.matcher(string);
        return !match.matches();
	}