Springboot整个SpringSecurity之连接数据库

第一步：导入依赖

第二步：编写实体类

@Data
@AllArgsConstructor
@NoArgsConstructor
public class User {
    private Integer id;
    private String username;
    private String password;
}

第三步：编写mapper

@Mapper
public interface UserMapper extends BaseMapper {
}

第四步：编写service

@Service("userDetailsService")
public class MyUser implements UserDetailsService {
   //注入mapper 
    @Autowired 
    private UserMapper myUser;
    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
            //得到用户数据
        QueryWrapper queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("username",username);
       comm.xiaokai.pojo.User users = myUser.selectOne(queryWrapper);

        
        if (users==null ){
            throw  new UsernameNotFoundException("用户名不存在,认证失败");
        }
        
        List authorities= AuthorityUtils.commaSeparatedStringToAuthorityList("roole");
        
        System.out.println("走到这里");
        return new User(users.getUsername(),new BCryptPasswordEncoder().encode(users.getPassword()),authorities);
    }
}

第五步：运行项目==进行测试