Java 生成六位验证码、SQL关键字验证、身证号和手机号脱敏工具类

package com.cjavapy.utils.util;
import org.apache.commons.lang3.math.NumberUtils;
import org.springframework.util.StringUtils;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;
/**
 * 验证码、手机号、身份证号处理工具类
 */
public class CommonUtil extends LoggerEngine {

    /**
     * 生成六位验证码
     *
     * @return
     */
    public static String generateVerificationCode() {
        Random random = new Random();
        String result = "";
        for (int i = 0; i < 6; i++) {
            result += (random.nextInt(9) + 1);;
        }
        return result;
    }
    // 手机号码前三后四脱敏
    public static String mobileEncrypt(String mobile) {
        if (StringUtils.isEmpty(mobile) || (mobile.length() != 11)) {
            return mobile;
        }
        return mobile.replaceAll("(\\d{3})\\d{4}(\\d{4})", "$1****$2");
    }
    //身份证前三后四脱敏
    public static String idEncrypt(String id) {
        if (StringUtils.isEmpty(id) || (id.length() < 8)) {
            return id;
        }
        return id.replaceAll("(?<=\\w{3})\\w(?=\\w{4})", "*");
    }

    //效验
    public static boolean sqlValidate(String str) {
        str = str.toLowerCase();//统一转为小写
        String badStr = "'|and|exec|execute|insert|select|delete|update|count|drop|*|%|chr|mid|master|truncate|" +
                "char|declare|sitename|net user|xp_cmdshell|;|or|-|+|,|like'|and|exec|execute|insert|create|drop|" +
                "table|from|grant|use|group_concat|column_name|" +
                "information_schema.columns|table_schema|union|where|select|delete|update|order|by|count|*|" +
                "chr|mid|master|truncate|char|declare|or|;|-|--|+|,|like|//|/|%|#";//过滤掉的sql关键字，可以手动添加
        String[] badStrs = badStr.split("\\|");
        for (int i = 0; i < badStrs.length; i++) {
            if (str.indexOf(badStrs[i]) >= 0) {
                return true;
            }
        }
        return false;
    }

    /**
     * 根据身份证号获取年龄
     * @param certId
     * @return
     */
    public static String getAgeByCertId(String certId) {
        String birthday = "";
        if (certId.length() == 18) {
            birthday = certId.substring(6, 10) + "/"
                    + certId.substring(10, 12) + "/"
                    + certId.substring(12, 14);
        }
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");
        Date now = new Date();
        Date birth = new Date();
        try {
            birth = sdf.parse(birthday);
        } catch (ParseException e) {
        }
        long intervalMilli = now.getTime() - birth.getTime();
        int age = (int) (intervalMilli/(24 * 60 * 60 * 1000))/365;
        System.out.println(age);
        return age +"";
    }
}