Spring Security：AuthenticationProvider和UserDetailsService无法按预期工作

我有两个关于Spring Security的问题 . 我在网上做了很多研究，但答案要么肤浅，要么太复杂，导致我的问题没什么帮助 . 我正在尝试在我的应用程序中使用Spring配置策略（完全不含xml） .

First Case 我've got a SecurityConfiguration class that extends the WebSecurityConfigurerAdapter. There I'已经获得了自动连接的loginService（实现了UserDetailsService），并且我已将AuthenticationManagerBuilder的UserDetailsService定义为我的LoginService .

当我尝试使用我的表单登录时，LoginService成功获取用户（根据提供的用户名和密码），但不知何故认证失败，我在浏览器中收到来自Tomcat的403 - 拒绝访问消息 .

Second Case 为了解决上一个问题，我创建了一个自定义AuthenticationProvider并将其注入我的SecurityConfiguration . 但是，当我尝试登录时，方法authenticate（）甚至不起作用 .

有没有人可以帮助我？先感谢您

SecurityConfiguration class

@Configuration
@EnableWebSecurity
public class SecurityConfiguration extends WebSecurityConfigurerAdapter{

private final String ADMIN_ROLE = "ADMIN";
private final String EMPLOYEE_ROLE = "EMPLOYEE";

@Autowired
private LoginService loginService;

@Autowired
public void configureGlobal ( AuthenticationManagerBuilder auth) throws Exception {

    auth.userDetailsService(loginService);
}

@Override
public void configure( WebSecurity web ) throws Exception {

    web.ignoring().antMatchers("/resources/**");
}

@Override
public void configure( HttpSecurity http ) throws Exception {

    http

        .authorizeRequests()
            .antMatchers("/login**", "/doLogin**").permitAll()
            .antMatchers("/admin", "/admin/**").hasRole(ADMIN_ROLE)
            .anyRequest().authenticated()
            .and()
        .requiresChannel()
            .anyRequest().requiresSecure()
            .and()
        .formLogin()
            .loginPage( "/login" )
            .loginProcessingUrl( "/doLogin" )
            .defaultSuccessUrl( "/admin" )
            .failureUrl( "/login?err=1" )
            .usernameParameter( "username" )
            .passwordParameter( "password" )
            .and()

        // This is where the logout page and process is configured. The logout-url is the URL to send
        // the user to in order to logout, the logout-success-url is where they are taken if the logout
        // is successful, and the delete-cookies and invalidate-session make sure that we clean up after logout
        .logout()
            .logoutRequestMatcher( new AntPathRequestMatcher( "/logout" ) )
            .logoutSuccessUrl( "/login?out=1" )
            .deleteCookies( "JSESSIONID" )
            .invalidateHttpSession( true )
            .and()

        // The session management is used to ensure the user only has one session. This isn't
        // compulsory but can add some extra security to your application.
        .sessionManagement()
            .invalidSessionUrl( "/login" )
            .maximumSessions( 1 );
}

}

LoginService class

@Service("loginService")
public class LoginService implements UserDetailsService{

@Autowired
private HibernateUserDAO hibernateUserDAO;

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

    User user = new User();
    user.setUsername(username);

    List<User> result = hibernateUserDAO.get(user);

    user = result.get(0);
    return user;
}
}

AuthProvider class

@Component("authProvider")
public class AuthProvider implements AuthenticationProvider {


@Autowired
private LoginService loginService;


@Override
public Authentication authenticate(Authentication auth)
        throws AuthenticationException {

    String username = auth.getName();
    String password = auth.getCredentials().toString();
    System.out.println(username + " " + password);

    UserDetails user = loginService.loadUserByUsername(username);
    System.out.println(user);
    if(user != null){

        Authentication token = new UsernamePasswordAuthenticationToken(username, password, user.getAuthorities());

        return token;
    }
    return null;
}

@Override
public boolean supports(Class<?> arg0) {
    // TODO Auto-generated method stub
    return false;
}

}

OBS：这里粘贴的SecurityConfiguration没有注入AuthProvider，但是作为一个信息，configureGlobal方法应该是这样的

@Autowired
private AuthProvider authProvider;

@Autowired
public void configureGlobal ( AuthenticationManagerBuilder auth) throws Exception {

    auth.authenticationProvider(authProvider);
}