正则表达式工具

package com.brainshare.common.utils;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * 正则表达式工具
 */
public class RegexUtil {

    private static final String REGEX_ID_CARD = "(^\\d{15}$)|(^\\d{17}([0-9]|X)$)";

    /**
     * 身份证号校验
     * @param idCard
     * @return
     */
    public static boolean isValidIdCard(String idCard) {
        return Pattern.matches(REGEX_ID_CARD, idCard);
    }

    public static boolean isRightChar(char c) {
        return isChinese(c) || isWord(c);
    }

    /**
     * 昵称校验（10字符内中英文）
     * @param nickName
     * @return
     */
    public static boolean isValidNickName(String nickName){
        if (StringUtils.isEmpty(nickName)){
            return false;
        }
        char[] chars = nickName.toCharArray();
        Integer length=0;
        for (char aChar : chars) {
            boolean chineseFlag = isChinese(aChar);
            boolean wordFlag = isWord(aChar);
            if (!chineseFlag&&!wordFlag){
                return false;
            }
            if (chineseFlag){
                length+=2;
            }
            if (wordFlag){
                length+=1;
            }
            if (length>=10){
                return false;
            }
        }
        return true;
    }


    /**
     * 校验某个字符是否是a-z、A-Z、_、0-9
     *
     * @param c 被校验的字符
     * @return true 代表符合条件
     */
    public static boolean isWord(char c) {
        String regEx = "[a-zA-Z]";
        Pattern p = Pattern.compile(regEx);
        Matcher m = p.matcher("" + c);
        return m.matches();
    }

    /**
     * 判定输入的是否是汉字
     *
     * @param c 被校验的字符
     * @return true 代表是汉字
     */
    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;
    }
}