SpringSecurity自定义登录

01 前期准备(与使用默认登录页类似)

引入依赖

xml 复制代码

	<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
		<!--mysql驱动-->
        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <scope>runtime</scope>
        </dependency>
		<!--模块化插件配置类-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!--mybatisplus依赖-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.5.1</version>
        </dependency>
		<!--spring-security依赖-->
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>

配置系统文件

yml 复制代码

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/(需要连接的数据库)?userSSL=false;serverTimezone=Asia/Shanghai
    username: (账号)
    password: (密码)
  mvc:
    pathmatch:
      matching-strategy: ant_path_matcher
mybatis-plus:
  config-locations: classpath:mapper/*.xml
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

配置扫描包

Java 复制代码

@SpringBootApplication
@MapperScan("com.example.demo.mapper")
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }

}

02 自定义登录

既然选择自定义登录，那么就要重新原本提供的默认登录接口(在使用jwt之前，无论是默认还是修改后的登录使用的都是cookie------session的方式)
这里使用mybatis-plus查询数据，其他方式如jdbc，mybatis也都是可以的，顺便说一句plus真好用

1.测试类

java 复制代码

@Data
@NoArgsConstructor
@AllArgsConstructor
public class MsUser {
	//账号密码对应的数据类
  private Long userId;
  private String username;
  private String password;
  private String createBy;
  private java.sql.Timestamp createTime;
  private String updateBy;
  private java.sql.Timestamp updateTime;
  private String remark;
}

2.重写UserDetailsServiceImpl类

java 复制代码

@Service
public class UserDetailsServiceImpl implements UserDetailsService {
    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        return null;
    }
}

返回值是UserDetails类，这是个接口，我们也要重写

3.继承UserDetails接口，设置类方法

继承接口后要做三件事，第一个是设置数据对应的实体类
第二件是设置getPassword()和getUsername()方法的返回值
第三件是把所有返回的false改成true
SpringSecurity后续会自动验证输入的账号密码是否正确

java 复制代码

@Data
@NoArgsConstructor
@AllArgsConstructor
public class LoginUser implements UserDetails {

    private MsUser msUser;//实体类设置
    
    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        return null;
    }

    @Override
    public String getPassword() {
        return msUser.getPassword();//返回实体类中的对应密码的属性
    }

    @Override
    public String getUsername() {
        return msUser.getUsername();//返回实体类中对应的账号名的属性
    }

    @Override
    public boolean isAccountNonExpired() {
        return true;
    }

    @Override
    public boolean isAccountNonLocked() {
        return true;
    }

    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }

    @Override
    public boolean isEnabled() {
        return true;
    }
}

4.重写loadUserByUsername方法

java 复制代码

@Service
public class UserDetailsServiceImpl implements UserDetailsService {
    @Autowired
    private MsUserServiceImp msUserServiceImp;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {

        //使用mybatis-plus,获取到账号密码数据
        LambdaQueryWrapper<MsUser> qw=new LambdaQueryWrapper<>();
        qw.eq(MsUser::getUsername,username);
        MsUser user = msUserServiceImp.getOne(qw);

        //将得到的账号密码数据放入继承了UserDetails接口的类中
        LoginUser loginUser = new LoginUser();
        loginUser.setMsUser(user);

        return loginUser;
    }
}

03 注意

在数据库里的密码要编码或者在最前面加上{noop}
springsecurity是默认密码编码的！