单点登录分析介绍

文章目录

1、单点登录解决方案
- 1.1、后端保存登录状态
- 1.2、token模式
2、user服务-登录接口
- 2.1、UserController
- 2.2、UserInfoServiceImpl
- 2.3、载荷
- 2.4、响应
- 2.5、Redis Desktop Manager

1、单点登录解决方案

多个系统只有一个登录服务

1.1、后端保存登录状态

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1.2、token模式

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2、user服务-登录接口

2.1、UserController

	@Operation( summary = "用户登录接口")@PostMapping("/login")public Result login(@RequestBody UserInfo userInfo) {String token = userInfoService.login(userInfo);return Result.ok(token);}

2.2、UserInfoServiceImpl

    @Overridepublic String login(UserInfo userInfo) {//1、校验参数String username = userInfo.getUsername();String password = userInfo.getPassword();if (StringUtils.isEmpty(username) || StringUtils.isEmpty(password)) {throw new SpzxException(ResultCodeEnum.LOGIN_PARAMS_ERROR, null);}//2、根据账号查询用户信息UserInfo dbUserInfo = this.getOne(Wrappers.lambdaQuery(UserInfo.class).eq(UserInfo::getUsername, username));if (dbUserInfo == null) {throw new SpzxException(ResultCodeEnum.LOGIN_USERNAME_ERROR, null);}//判断用户状态，用户状态校验if (dbUserInfo.getStatus() != 1) {throw new SpzxException(ResultCodeEnum.LOGIN_USER_STATUS_ERROR, null);}//3、账号存在，校验密码//使用明文密码 和 盐 采用注册的加密方式加密 和数据库密文比较String encodePwd = DigestUtils.md5DigestAsHex((DigestUtils.md5DigestAsHex(password.getBytes()) + dbUserInfo.getSalt()).getBytes());if (!encodePwd.equals(dbUserInfo.getPassword())) {throw new SpzxException(ResultCodeEnum.LOGIN_PASSWORD_ERROR, null);}//密码正确//4、生成token 缓存到redis中String token = IdUtil.getSnowflake(1, 1).nextIdStr();// 将用户密码重置为null，表示清除密码信息dbUserInfo.setPassword(null);// 将用户盐值重置为null，配合密码重置，确保安全性和一致性dbUserInfo.setSalt(null);redisTemplate.opsForValue().set("spzx:user:login:" + token, dbUserInfo, 7, TimeUnit.DAYS);//登录成功：更新用户最后一次登录的时间 和 ip地址ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();HttpServletRequest request = requestAttributes.getRequest();return token;}

2.3、载荷

{"username": "18947628476","password": "123456"
}

2.4、响应

{"code":200,"message":"SUCCESS","data":"1801188891328385024"}

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2.5、Redis Desktop Manager

{"@class": "com.atguigu.spzx.model.entity.h5.UserInfo","id": 1774759294596579329,"createTime": ["java.util.Date","2024-04-01 19:22:44"],"updateTime": ["java.util.Date",1718243055000],"deleted": false,"username": "18947628476","password": null,"nickName": "小弟","avatar": "https://cdn.apifox.com/app/project-icon/builtin/16.jpg","sex": null,"phone": null,"memo": null,"openId": null,"unionId": null,"lastLoginIp": null,"lastLoginTime": null,"status": 1,"salt": null
}