使用 Spring Security + Spring data + MongoDB 进行身份验证

我想将 Spring security 与 MongoDB 结合使用（使用 Spring 数据），并从我自己的数据库中检索用户以实现 spring security。但是，我不能这样做，因为我的用户服务类型似乎不受支持。

这是我的 UserService 类：

public class UserService {
    private ApplicationContext applicationContext;
    private MongoOperations mongoOperations;

    public UserService() {
        applicationContext = new AnnotationConfigApplicationContext(MongoConfig.class);
        mongoOperations = (MongoOperations) applicationContext.getBean("mongoTemplate");
    }

    public User find(String username) {
        return mongoOperations.findOne(Query.query(Criteria.where("username").is(username)), User.class);
    }
}

还有我的 SecurityConfig 类：

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    UserService userService;

    @Autowired
    public void configAuthBuilder(AuthenticationManagerBuilder builder) throws Exception {
        builder.userDetailsService(userService); //THIS DOES NOT WORK
        builder.inMemoryAuthentication().withUser("username").password("password").roles("USER");
    }

}

我评论的那一行说：

The inferred type UserService is not a valid substitute for the bounded parameter <T extends UserDetailsService>.

我该如何修复它以便我可以从我自己的数据库中检索用户？

服务层

你必须创建一个单独的service实施org.springframework.security.core.userdetails.UserDetailsService并将其注入到AuthenticationManagerBuilder.

@Component
public class SecUserDetailsService implements UserDetailsService{

    @Autowired
    private UserRepository userRepository;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        /*Here add user data layer fetching from the MongoDB.
          I have used userRepository*/
        User user = userRepository.findByUsername(username);
        if(user == null){
            throw new UsernameNotFoundException(username);
        }else{
            UserDetails details = new SecUserDetails(user);
            return details;
        }
    }
}

Model

UserDetails也应该落实。这是 POJO，它将通过 Spring 保存用户经过身份验证的详细信息。您可以将实体数据对象包含在其中，就像我所做的那样。

public class SecUserDetails implements UserDetails {

    private User user;

    public SecUserDetails(User user) {
        this.user = user;
    }
    ......
    ......
    ......
}

安全配置

自动装配我们之前创建的服务并将其设置在AuthenticationManagerBuilder

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    SecUserDetailsService userDetailsService ;

    @Autowired
    public void configAuthBuilder(AuthenticationManagerBuilder builder) throws Exception {
        builder.userDetailsService(userDetailsService); 
    }
}