Question

我正在开发一个门户项目。当我将portlet部署到WebSphere时，我得到了NoSuchBeanDefintionException，我还检查了component-scan中的包，并且还搜索了它，但我没有找到任何解决方案。每个portlet的context.xml中的所有必需包。

请参阅下面的日志

Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.myhealthone.common.model.Account com.hca.cpp.coreservice.UserServiceImpl.account; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.myhea.common.model.Account] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@ringframework.beans.factory.annotation.Autowired(required=true)}
> at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcesva:514)
> at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
> at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor285)
        ... 147 more
> Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.myhealthone.common.model.Account] found for depy: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotatiowired(required=true)}

我将所有必需的软件包添加到组件扫描。

Answer 1

来自this link

Spring 2.5引入了进一步的构造型注释：@Component， @Service和@Controller。 @Component用作通用构造型对于任何Spring管理的组件;而@Repository，@ Service和 @Controller作为@Component的特化，更具体用例（例如，在持久性，服务和表示层中，分别）。这意味着您可以为组件添加注释使用@Component的类，但通过使用@Repository注释它们，相反，@ Service或@Controller更适合你的类适合通过工具处理或与方面相关联。对于例如，这些刻板印象注释成为理想的目标切入点。当然，也可能是@Repository，@ Service，和@Controller在将来的版本中可能带有额外的语义 Spring框架。因此，如果您在使用之间做出决定服务层的@Component或@Service，@ Service显然是更好的选择。同样，如上所述，@ Repository已经存在支持作为自动异常翻译的标记持久层。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans 
           http://www.springframework.org/schema/beans/spring-beans.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context.xsd">

     <context:component-scan base-package="org.example"/>

</beans>

@Service
public class SimpleMovieLister {

    private MovieFinder movieFinder;

    @Autowired
    public SimpleMovieLister(MovieFinder movieFinder) {
        this.movieFinder = movieFinder;
    }
}

@Repository
public class JpaMovieFinder implements MovieFinder {
    // implementation elided for clarity
}

没有找到这样的bean定义？

1 个答案: