java - Spring Security @AuthenticationPrincipal

Question

我一直在尝试让 @AuthenticationPrincipal 与自定义 User 类一起正常工作。不幸的是，用户始终为空。代码如下:

Controller

@RequestMapping(value = "/", method = RequestMethod.GET)
public ModelAndView index(@AuthenticationPrincipal User user) {
    ModelAndView mav= new ModelAndView("/web/index");
    mav.addObject("user", user);
    return mav;
}

安全配置

@Configuration
@EnableWebMvcSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    CustomUserDetailsService customUserDetailsService;

    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
            auth.userDetailsService(customUserDetailsService).passwordEncoder(passwordEncoder());
    }

}

CustomUserDetailsS​​ervice

@Component
public class CustomUserDetailsService implements UserDetailsService {

@Autowired
UserRepository userRepository;

@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
    // Spring Data findByXY function
    return userRepository.findByUsername(username);
}

用户实体

public class User implements UserDetails{
    private String username;
    private String password;
    private Collection<Authority> authorities;

    // Getters and Setters

}

权威实体

public class Authority implements GrantedAuthority{
    private User user;
    private String role;

    // Getters and Setters

    @Override
    public String getAuthority() {
        return this.getRole();
    }
}

我已经尝试了各种我在网上找到的解决方案，例如像这样转换我的自定义用户对象:

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

获得活跃用户的其他方法都没有问题，但我发现@AuthenticationProvider CustomUserObject 是最干净的方法，这就是我想让它工作的原因。非常感谢任何帮助。

Answer 1

您可以直接在方法参数中指定对经过身份验证的用户的依赖，而不是使用@AuthenticationPrincipal。如下所示

@RequestMapping(value = "/", method = RequestMethod.GET)
public ModelAndView index(Principal user) {
    ModelAndView mav= new ModelAndView("/web/index");
    mav.addObject("user", user);
    return mav;
} 

此 Principal 对象将是通过 Spring Security 进行身份验证的实际对象。当方法被调用时，Spring 会为你注入(inject)这个。