基于springboot和redis实现的单点登录

基于springboot和redis实现的单点登录

1、pom.xml配置

server:
  port: 8888
spring:
  datasource:
    url: jdbc:mysql://127.0.0.1:3306/users?useSSL=false&serverTimezone=GMT%2B8
    username: root
    password: sasa
    driver-class-name: com.mysql.cj.jdbc.Driver
  jpa:
    show-sql: true
    database: mysql
    hibernate:
      ddl-auto: update
      naming:
        implicit-strategy: org.hibernate.boot.model.naming.ImplicitNamingStrategyComponentPathImpl
        physical-strategy: org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
  redis:
    host: 122.51.85.243
    port: 6379
    password:
    jedis:
      pool:
        max-total: 200
  main:
    allow-bean-definition-overriding: true

2、实体类

package com.xkxx.sso.pojo;

import lombok.Data;

import javax.persistence.*;

@Data
@Entity
@Table(name = "user")
public class User {
   
   
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id")
    private Integer id;
    @Column(name = "userName")
    private String userName;
    @Column(name = "password")
    private String password;

}

3、编写Dao，UserDao.class

public interface UserDao extends JpaRepository<User,Integer> {
   
   
   public User findByUsernameAndPassword(String username, String password);
}

4、编写serviceImpl,UserServiceImpl.class进行登录的业务逻辑处理

@Service
public class UserServiceImpl{
   
   
    @Autowired
    private UserDao userDao;
    @Autowired
    private JedisDao jedisDao;
    @Value("${REDIS_KEY}")   //从配置文件中取值
    private String KEY;

    private Map<Integer,String> UserLogin = new HashMap<>();

    /**
     * 登录
     * @param request
     * @param response
     * @param u
     * @return
     */
    public User userlogin(HttpServletRequest request, HttpServletResponse response, User u){
   
   
        //查询登录是否成功
        User user=userDao.findByUsernameAndPassword(u.getUsername(),u.getPassword());
        //判断us是否为空
        if(user==null){
   
   
            return null;
        }
        //生成token
        String token="user_"+ UUID.randomUUID().toString();
        //从map中获得redis中的key
        String oldToken = UserLogin.get(user.getId());
        //判断map中是否存在该id
        if(!StringUtils.isEmpty(oldToken)){
   
   
            //删除redis中老的值
            jedisDao.delValue(oldToken);
        }
        //将新的的key保存到map中
        UserLogin.put(user.getId(),token)<