自动连线失败非法辩论不安全操作异常

Question

升级我的Spring罐后，我得到了以下例外。

org.springframework.web.servlet.DispatcherServlet - Context initialization failed  
org.springframework.beans.factory.BeanCreationException: Error creating bean with name     'org.springframework.integration.transformer.HeaderEnricher#4': Cannot create inner bean     '(inner bean)' of type [org.springframework.integration.transformer.HeaderEnricher$MessageProcessingHeaderValueMessageProcessor] while setting constructor argument with key [#{partnerHeaderKey}]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#19': Injection of resource dependencies failed; nested exception is java.lang.IllegalArgumentException: Can not set com.follett.fheg.coursemateriallookup.coursematerial.data.dao.PartnerDAO field com.follett.fheg.coursemateriallookup.coursematerial.integration.headerenricher.PartnerHeaderEnricher.partnerDAO to org.springframework.integration.transformer.HeaderEnricher$MessageProcessingHeaderValueMessageProcessor
at org.springframework.beans.factory.support.BeanDefinitionValue Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#19': Injection of resource dependencies failed; nested exception is java.lang.IllegalArgumentException: Can not set com.follett.fheg.coursemateriallookup.coursematerial.data.dao.PartnerDAO field com.follett.fheg.coursemateriallookup.coursematerial.integration.headerenricher.PartnerHeaderEnricher.partnerDAO to org.springframework.integration.transformer.HeaderEnricher$MessageProcessingHeaderValueMessageProcessor
at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:306)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1146)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:271)
... 40 more
Caused by: java.lang.IllegalArgumentException: Can not set com.follett.fheg.coursemateriallookup.coursematerial.data.dao.PartnerDAO field com.follett.fheg.coursemateriallookup.coursematerial.integration.headerenricher.PartnerHeaderEnricher.partnerDAO to org.springframework.integration.transformer.HeaderEnricher$MessageProcessingHeaderValueMessageProcessor
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:146)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:150)
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:37)
at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:57)
at java.lang.reflect.Field.set(Field.java:657)
at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:150)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:303)
... 44 more

从我所读到的内容来看，我需要向我的bean添加@组件注释和/或在我的应用程序上下文中创建组件-这两种方法都不起作用。它所指的DAO是这样声明的

我正在使用Spring集成，所以在那里定义了bean到自动连接。

<integration:header-enricher>
        <integration:header name="#{partnerHeaderKey}" method="getPartner">
            <bean class="com.follett.fheg.coursemateriallookup.coursematerial.integration.headerenricher.PartnerHeaderEnricher"/>
        </integration:header>
    </integration:header-enricher>

任何想法或帮助都很感激！谢谢你。

注意：如果我回到Spring 2.1.4，应用程序运行良好。即使未声明@组件或

更新

正如blackpanther在下面提到的，我需要应用程序上下文中的一个元素。我没有提到我有这个




Answer 1

我能够通过使用@Component注释以及修改在上下文中创建bean的方式来解决这个问题。

出于某种原因，当我移动

老路

<integration:header-enricher>
    <integration:header name="#{partnerHeaderKey}" method="getPartner">
        <bean   class="com.follett.fheg.coursemateriallookup.coursematerial.integration.headerenricher.Partner    HeaderEnricher"/>
    </integration:header>
</integration:header-enricher>

新方法

<integration:header-enricher>
<integration:header name="#{partnerHeaderKey}" method="getPartner" ref="myBean">
</integration:header>
    </integration:header-enricher>
</integration:chain>
<bean id="myBean"   class="com.follett.fheg.coursemateriallookup.coursematerial.integration.headerenricher.PartnerHeaderEnricher"/>

Answer 2

您可以在组件内部的bean声明顶部指定@Qualifer，如下所示。

@Autowired
@Qualifier("loginService")
private ILoginService loginService;

loginService是应用程序中bean的名称。xml上下文文件。

Answer 3

不完全是这样，仅仅把注释@组件放进去并不意味着Java类将自动连接其属性。为了有效地使用@Component注释，必须告诉Spring在哪里查找这些类。这是通过

我想看看这篇文章，因为它可能会对你有所帮助。