spring boot org.SpringFramework.Beans.Factory.BeanCreationException：无法自动连接字段：

Question

我从spring-boot开始，我有一些配置问题。我无法自动操作某些服务。我得到一个BeanCreationException。

@SpringBootApplication
@EnableAutoConfiguration
@ComponentScan(basePackages = "com.x.server", basePackageClasses = { OAuth2ServerConfiguration.class,
        AController.class, BController.class })
public class Application extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(Application.class);
    }

    public static void main(String[] args) {
        new Application().configure(new SpringApplicationBuilder(Application.class)).run(args);
    }
}

----com.x.server
--------Application.java
----com.x.server.controller
--------AController.java
--------BController.java
----other packages
----com.x.server.service
--------WYXService
--------ABCService
----com.x.server.service.serviceImpl
--------WYXServiceImpl
--------ABCServiceImpl

public interface WYXService<T> {

    public void setClazz(final Class<T> clazzToSet);
    public void createEntity(T t);
    public void removeEntity(T t);
}

@Transactional
@Service("wyxService")
public class WYXServiceImpl<T> implements WYXService<T>

Hier是我自动执行服务的控制器：

@Path("/test")
@Component
@Controller
@Produces(MediaType.APPLICATION_JSON)
public class BController {

    @Autowired
    WYXService wyxService;

控制台的错误：

Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.x.server.service.WYXService com.x.server.controller.BController.wyxService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.x.server.service.WYXService] 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$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
    ... 25 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.x.server.service.WYXService ] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1301)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1047)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533)
    ... 27 more

当我从compenentscan中删除两个控制器时，我不会出现这个错误，但我需要扫描这些控制器来访问endpoint。

Answer 1

我删除泽西依赖项：

 <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-jersey</artifactId>
 </dependency>

然后添加了sprint-boot-starter-web依赖项

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>