RestController benötigt eine Service Bean mit Spring Boot & Multi Modulen

Question

Ich habe mein Spring Boot Projekt als Single Maven Projekt getestet und alles hat gut funktioniert. Ich entschied mich, meine Anwendung in Submodule zu teilen. Repository, Service und das Spring-Boot-Web-Modul. Der Autowired hört auf zu arbeiten. Und der folgende Fehler aufgetreten:

20:12:08.052 [main] WARN o.s.b.c.e.AnnotationConfigEmbeddedWebApplicationContext - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userRestController': Unsatisfied dependency expressed through field 'userService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.plendo.service.interfaces.UserService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} 
20:12:08.068 [main] WARN o.s.boot.SpringApplication - Error handling failed (Error creating bean with name 'delegatingApplicationListener' defined in class path resource [org/springframework/security/config/annotation/web/configuration/WebSecurityConfiguration.class]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration': Initialization of bean failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'org.springframework.context.annotation.ConfigurationClassPostProcessor.importRegistry' available) 
20:12:08.243 [main] ERROR o.s.b.d.LoggingFailureAnalysisReporter - `` 
*************************** 
APPLICATION FAILED TO START 
*************************** 
Description: 
Field userService in org.plendo.ui.controller.UserRestController required a bean of type 'org.plendo.service.interfaces.UserService' that could not be found. 

Answer 1

Die Projektstruktur: parent Projekt, das JPA-Modul, Servicemodul und Web-Modul (Feder Boot app)

• Feder Boot-Anwendung Klasse enthält: Web-Modul

  package org.plendo.ui;  
  @SpringBootApplication public class App { public static void main(String[] args) { 
  @SpringBootApplication 
  public class App { 
  public static void main(String[] args) { 
      SpringApplication.run(App.class, args); 
  } 
      } 
  

• RestController Klasse: Web-Modul

  package org.plendo.ui.controller; 
  import org.plendo.jpa.entity.User; 
  
  import org.plendo.service.interfaces.UserService; 
  import org.springframework.beans.factory.annotation.Autowired; 
  import org.springframework.context.annotation.ComponentScan; 
  import org.springframework.web.bind.annotation.RequestMapping; 
  import org.springframework.web.bind.annotation.RestController; 
  
  @RestController 
  //@ComponentScan("org.plendo.service.interfaces") 
  public class UserRestController { 
  
  @Autowired 
  //@Qualifier("userService") 
  private UserService userService; 
  
  @RequestMapping(value = "/saveUser") 
  public User saveUser(User u) { 
      return userService.saveUser(u); 
  } 
  } 
  

• UserServiceImpl: Servicemodul

  import org.apache.log4j.Logger; 
  import org.plendo.jpa.entity.User; 
  import org.plendo.jpa.entity.UserRepository; 
  import org.plendo.service.interfaces.UserService; 
  import org.springframework.beans.factory.annotation.Autowired; 
  import org.springframework.beans.factory.annotation.Qualifier; 
  import org.springframework.stereotype.Service; 
  
  @Service 
  public class UserServiceImpl implements UserService { 
  
  private Logger logger = Logger.getLogger(this.getClass()); 
  @Autowired 
  UserRepository userRepository; 
  
  @Override 
  public User saveUser(User u) { 
      return userRepository.save(u); 
  } 
  

  }

• Userservice-Schnittstelle: Servicemodul

  package org.plendo.service.interfaces; 
  
  import org.plendo.jpa.entity.User; 
  import org.springframework.beans.factory.annotation.Qualifier; 
  import org.springframework.stereotype.Service; 
  
  public interface UserService { 
  
  public User saveUser(User u); 
  } 
  

• UserRepository Schnittstelle: JPA-Modul

  package org.plendo.jpa.entity; 
  
  import org.springframework.data.jpa.repository.JpaRepository; 
  
  public interface UserRepository extends JpaRepository<User, String>{ 
  
  } 
  

  Es gibt noch etwas zu tun?