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hutool

https://www.hutool.cn/docs/#/

1.简介

2.pom.xml

<dependency><groupId>cn.hutool</groupId><artifactId>hutool-all</artifactId><version>5.8.16</version>
</dependency>

3.Hutool-crypto概述

4.MD5 加密

    public static void main(String[] args) throws IOException {String  testStr="123456";//DigesterDigester md5 = new Digester(DigestAlgorithm.MD5);String digestHex = md5.digestHex(testStr);System.out.println(digestHex);//DigestUtilString md5Hex1 = DigestUtil.md5Hex(testStr);System.out.println(md5Hex1); //e10adc3949ba59abbe56e057f20f883e}

案例1

1.hutool依赖

        <dependency><groupId>cn.hutool</groupId><artifactId>hutool-all</artifactId><version>4.5.2</version></dependency>

2.用户表

• password
• salt
• hash_iterations

3.加密方法

    /*** 对密码进行md5加密**/private String md5Password(String salt, int hashCount, String password) {return MD5.create().setSalt(salt.getBytes()).setDigestCount(hashCount).digestHex(password);}

4.业务代码

• 新增账号

        String salt = String.valueOf(new Random().nextInt(rangNum) + 1);int hashIterations = 3;//新增String  encryptNewPwd = MD5.create().setSalt(salt.getBytes()).setDigestCount(hashIterations).digestHex(reqDTO.getPassword());dbUserModel.setPassword(encryptNewPwd);userMapper.insert(dbUserModel);

• 登录

    @Overridepublic AuthSessionEntity login(UserLoginReqDTO reqDTO) {String userName = reqDTO.getUserName();String password = reqDTO.getPassword();UserModel userModel = getValidUser(userName);if(userModel==null){throw new AppException("账号不存在，请联系管理员创建账号");}//检查账号是否被锁住verifyUserAccountLock(userModel.getUserId());String encryptPwd = md5Password(userModel.getSalt(), userModel.getHashIterations(), password);if (!StringUtils.equals(encryptPwd, userModel.getPassword())) {//如果密码错误，记录密码连续错误的次数，次数达到指定的阈值，锁住用户的账号addLoginErrorCountOrLocked(userModel.getUserId());throw new AppException("账号或密码错误，请重新输入");}//登录成功，删除连续登录失败的记录resetErrorLoginCount(userModel.getUserId());return createAuthSessionEntity(userModel);}/*** 对密码进行md5加密**/private String md5Password(String salt, int hashCount, String password) {return MD5.create().setSalt(salt.getBytes()).setDigestCount(hashCount).digestHex(password);}