使用UserDetailsS​​ervice的Spring Security身份验证 [英] Spring Security authentication using UserDetailsService

问题描述

我在Spring安全身份验证方面存在一些问题。
在我的应用程序的任何地方一切都很好（CRUD操作运行良好），但登录尝试失败。

I have some issues with Spring security authentication. Everywhere in my application everything works great (CRUD operations work well), but login attempt fails.

这是我的代码（我在下面标记了userDAO是的注释null，这是验证失败的原因）：

Here's my code (I marked below with comments where userDAO is null which is cause of failed authentication):

@Service
public class UserServiceImpl implements UserService, UserDetailsService {

    @Autowired
    UserDAO userDAO;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        User user = userDAO.getUserByUsername(username); //userDAO == null Causing NPE
        if (user == null)
            throw new UsernameNotFoundException("Oops!");

        List<SimpleGrantedAuthority> authorities = Arrays.asList(new SimpleGrantedAuthority(user.getRole()));

        return new org.springframework.security.core.userdetails
                .User(user.getLogin(), user.getPassword(), authorities);
    }

@Override
    public List<User> getUsers() {
        return userDAO.getUsers();//userDAO !=null
    }
//rest of code skipped

我的SecurityConfig看起来像这样

My SecurityConfig looks like this

@Configuration
@EnableWebMvcSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

 UserServiceImpl userService = new UserServiceImpl();

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userService);
    }
//rest of code skipped

我标记了我获得NPE的地方我不知道如何解决这个问题。整个配置是基于Java的，您可以在这里查看更多详细信息
HERE

I marked where i get NPE and i have no idea how to solve this. Whole Configuration is JavaBased and you can check it out out here for more details HERE

编辑：getUsers（）在控制器中以这种方式调用：

getUsers() is invoked this way in controller:

@Controller
public class LoginController {
    @Autowired
    UserService userService;

 @RequestMapping(value = "/dashboard")
    public ModelAndView userDashboard(){
        ModelAndView modelAndView = new ModelAndView("Dashboard");
        List<User> userList = userService.getUsers();
        modelAndView.addObject("users", userList);
        return modelAndView;
    }

在这种情况下（调用userService.getUsers（）时）userDAO不是null

And in this case (when invoking userService.getUsers()) userDAO is not null

试图解决它像Bohuslav Burghardt建议的那样我得到了

Tried to fix it like Bohuslav Burghardt suggested and i got

 method userDetailsService in class org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder cannot be applied to given types;
  required: T
  found: com.gi.service.UserService
  reason: inferred type does not conform to upper bound(s)
    inferred: com.gi.service.UserService
    upper bound(s): org.springframework.security.core.userdetails.UserDetailsService

in line
auth.userDetailsS​​ervice（userService）;

in line auth.userDetailsService(userService);

推荐答案

使用Bohuslav的这段代码解决问题

Problem solved with this piece of code from Bohuslav

public class SecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    private UserService userService;
}

也缺少

@ComponentScan("com.gi")

之前

public class SecurityConfig extends WebSecurityConfigurerAdapter {

缺少导致

Error:(24, 13) java: method userDetailsService in class org.springframework.security.config.annotation.authentication.builders.Authentic‌​ationManagerBuilder cannot be applied to given types; required: T found: com.gi.service.UserService reason: inferred type does not conform to upper bound(s) inferred: com.gi.service.UserService upper bound(s): org.springframework.security.core.userdetails.UserDetailsService

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