spring boot org.springframework.beans.factory.BeanCreationException：无法自动装配字段： [英] spring boot org.springframework.beans.factory.BeanCreationException: Could not autowire field:

问题描述

我从spring-boot开始，我遇到了一些配置问题。我不能自动提供某些服务。我得到一个BeanCreationException。

I'm starting with spring-boot and i have some configuration problems. I cannot autowire some services. I get an BeanCreationException.

我的应用程序类：

@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);
    }
}

我项目的结构：

----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

我的服务接口

public interface WYXService<T> {

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

实施

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

Hier是我自动提供服务的控制器：

Hier is the controller where i autowire the service:

@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，我没有此错误，但我需要扫描这些控制器以访问端点。

when i remove the two controllers from compenentscan, i don't have this error but i need to scan those controllers to access the endpoints.

有人有想法吗？

干杯

推荐答案

我也删除了球衣依赖：

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

然后我添加了sprint-boot-starter-web依赖

and then I added the sprint-boot-starter-web dependency

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

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