Question

当我启动我的应用程序时，我在stacktrace中收到此错误

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.springfoundation.service.SecurityService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations:

这是我在spring security class.java中的代码

public interface SecurityService {
    String findLoggedInUsername();
    void autologin(String username, String password);
    }

这是我对接口实现者的代码

public class SecurityServiceImpl implements SecurityService {

     @Autowired
        private AuthenticationManager authenticationManager;

        @Autowired
        private UserDetailsService userDetailsService;

        private static final Logger logger = LoggerFactory.getLogger(SecurityServiceImpl.class);

        @Override
        public String findLoggedInUsername() {
            Object userDetails = SecurityContextHolder.getContext().getAuthentication().getDetails();
            if (userDetails instanceof UserDetails) {
                return ((UserDetails)userDetails).getUsername();
            }

            return null;
        }

        @Override
        public void autologin(String username, String password) {
            UserDetails userDetails = userDetailsService.loadUserByUsername(username);
            UsernamePasswordAuthenticationToken usernamePasswordAuthenticationToken = new UsernamePasswordAuthenticationToken(userDetails, password, userDetails.getAuthorities());

            authenticationManager.authenticate(usernamePasswordAuthenticationToken);

            if (usernamePasswordAuthenticationToken.isAuthenticated()) {
                SecurityContextHolder.getContext().setAuthentication(usernamePasswordAuthenticationToken);
                logger.debug(String.format("Auto login %s successfully!", username));
            }
        }

我的控制器中的代码如下所示，使用了上面提到的Spring安全类

@Controller
public class UserController {
    @Autowired
    private UserService userService;
    @Autowired
    private SecurityService securityService;

我将上述声明用于仍在控制器类

内的映射

@RequestMapping(value = "/registration", method = RequestMethod.POST)
    public String registration(@ModelAttribute("userForm") User userForm, BindingResult bindingResult, Model model) {
        userValidator.validate(userForm, bindingResult);

        if (bindingResult.hasErrors()) {
            return "registration";
        }

        userService.save(userForm);

       securityService.autologin(userForm.getUsername(), userForm.getPasswordConfirm());

        return "redirect:/welcome";
    }

这是我目前面临的问题的完整堆栈跟踪

Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private 
com.springfoundation.service.SecurityService com.springfoundation.controller.UserController.securityService; 
nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type 
[com.springfoundation.service.SecurityService] found for dependency: expected at least 1 bean which qualifies 
as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:513) ~[spring-beans-3.1.4.RELEASE.jar:3.1.4.RELEASE]
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:92) ~[spring-beans-3.1.4.RELEASE.jar:3.1.4.RELEASE]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:284) ~[spring-beans-3.1.4.RELEASE.jar:3.1.4.RELEASE]
    ... 22 common frames omitted
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.springfoundation.service.SecurityService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

请问我的代码显示上述错误

可能有什么问题

Answer 1

您是否已将@ComponentScan("com.your.securityservice.package")添加到配置java / xml配置文件中？如果还没有，Spring容器将无法识别服务的注释。

嵌套异常是NoSuchBeanDefinitionException：没有类型为[com.springfoundation.service.SecurityService]的匹配bean

1 个答案: