我开始我的旅程与Spring，我已经尝试做简单的日志应用程序，但我绊倒across问题，我不能解决.我的代码符合，但当我试图登录，即使我插入正确的数据存在于数据库中，它从来没有让我槽.我相信有问题的函数loadUserByNode，因为它从来没有被调用，因为它既不抛出错误或记录任何东西. BLOG是我的程序代码
user.java

@Data
@Entity
@Table(name = "userinfo")
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "userkey")
    private int userKey;
    @Column(name = "emailaddress")
    private String emailAddress;
    @Column(name = "password")
    private String password;
    @Column(name = "role")
    private String role;
}

字符串
UserRepository.java

public interface UserRepository extends JpaRepository<User,Long> {
    Optional<User> findByEmailAddress(String email);
}

型
SecurityConfig.java

@Configuration
public class SecurityConfig {
    private final UserDetail userDetail;
    @Autowired
    public SecurityConfig(UserDetail userDetail) {
        this.userDetail = userDetail;
    }
    @Bean
    public static PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
    @Bean
    public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
        http.csrf(AbstractHttpConfigurer::disable)
                .authorizeHttpRequests(authorize ->
                        authorize.anyRequest().authenticated())
                .formLogin(form -> form
                        .loginPage("/login")
                        .loginProcessingUrl("/login")
                        .defaultSuccessUrl("/")
                        .permitAll())
                .logout(logout -> logout
                        .logoutRequestMatcher(new AntPathRequestMatcher("/logout"))
                        .permitAll());
        http.userDetailsService(userDetail);
        return http.build();
    }
}

型
UserDetail.java

@Service
@Slf4j
public class UserDetail implements UserDetailsService {
    private final UserRepository userRepository;
    @Autowired
    public UserDetail(UserRepository userRepository) {
        this.userRepository = userRepository;
    }
    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        Optional<User> user = userRepository.findByEmailAddress(username);
        if(user.isEmpty()){
            throw new UsernameNotFoundException("This email address does not exists");
        }
        User existingUser = user.get();
        log.info("Email Address: {}, Password: {}", existingUser.getEmailAddress(), existingUser.getPassword());
        return new org.springframework.security.core.userdetails.User(
                username,
                existingUser.getPassword(),
                Collections.singletonList(new SimpleGrantedAuthority(existingUser.getRole())));
    }
}

型
MainController.java

@Controller
@Slf4j
public class MainController {
    @GetMapping("/login")
    public String login(){
        return "login";
    }
    @GetMapping("/logout")
    public String logout(){
        return "redirect:/login";
    }
}

型
login.html的核心片段

<div class="col-md-6 offset-md-3">
                <div th:if="${param.error}">
                    <div class="alert alert-danger">Invalid Email or Password</div>
                </div>
                <div th:if="${param.logout}">
                    <div class="alert alert-success">You have been logged out.</div>
                </div>
                <div class="card">
                    <div class="card-header">
                        <h2 class="text-center">Login</h2>
                    </div>
                    <div class="card-body">
                        <form method="POST" role="form" th:action="@{/login}"
                              class="form-horizontal">
                            <div class="form-group mb-3">
                                <label class="control-label"> Email address</label> <label for="emailAddress"></label>
                                <input type="text" id="emailAddress" name="emailAddress" class="form-control" placeholder="Enter email address" />
                            </div>
                            <div class="form-group mb-3">
                                <label class="control-label"> Password</label> <label for="password"></label>
                                <input type="password" id="password" name="password" class="form-control" placeholder="Enter password" />
                            </div>
                            <div class="form-group mb-3">
                                <button type="submit" class="btn btn-primary">Login</button>
                            </div>
                        </form>
                    </div>
                </div>
            </div>

型
我试图在代码的多个部分设置日志记录，即使在控制器中，它也总是返回email：null和password：null，因此我认为这个函数没有被调用。