spring - 基于 spring 的网络应用程序中的父上下文

Question

我正在将我的 EAR/WAR 文件部署到 Jboss 4.2，并且我已连接 web.xml 以加载公共(public)应用程序上下文文件，因此我可以通过父 spring 上下文共享公共(public) bean。

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"    
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee web-app_2_4.xsd"    
version="2.4">
<display-name>Validation Service</display-name>
<description>Validation Service</description>

<context-param>
    <param-name>locatorFactorySelector</param-name>
    <param-value>classpath*:coreBeanContext.xml</param-value>
</context-param>
<context-param>
    <param-name>parentContextKey</param-name>
    <param-value>coreBeanFactory</param-value>
</context-param>

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

我的“coreBeanFactory”被定义为使用“ClassPathXmlApplicationContext”。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd"
   default-lazy-init="true">

<bean id="coreBeanFactory"
    class="org.springframework.context.support.ClassPathXmlApplicationContext">
    <constructor-arg>
        <value>coreApplicationContext.xml</value>
    </constructor-arg>
</bean>

但在启动期间，coreBeanContext.xml 文件已加载，但我收到此异常

Caused by: org.springframework.beans.factory.access.BootstrapException: 
Unable to return specified BeanFactory instance: factory key [coreBeanFactory], 
from group with resource name [classpath*:coreBeanContext.xml]; 
nested exception is org.springframework.beans.factory.BeanNotOfRequiredTypeException: 
Bean named 'coreBeanFactory' must be of type 
[org.springframework.beans.factory.BeanFactory],
but was actually of type 
[org.springframework.context.support.ClassPathXmlApplicationContext] 
at org.springframework.beans.factory.access.SingletonBeanFactoryLocator.useBeanFactory(SingletonBeanFactoryLocator.java:410)

我想知道为什么 SingletonBeanFactoryLocator 将这个 bean 选为错误类型？

更新(2009 年 6 月 20 日)

添加完整的堆栈跟踪。我的应用程序使用@Webservice 注释，并在部署期间生成 WSDL 文件。接口(interface)中的对象引用之一需要在其构造函数中连接到数据库 - 以及导致此问题的 spring 数据源 bean 引用的查找。 ATM - 我正在考虑使用 SpringBeanAutowiringInterceptor 来确保对象被正确注入(inject)。

org.jboss.deployment.DeploymentException: Could not create deployment: file:/C:/projects/libs/jboss-4.2.2.GA/server/default/tmp/deploy/tmp30413validationservice.ear-contents/validation-ejb.jar; - nested throwable: (java.lang.ExceptionInInitializerError)
at org.jboss.deployment.DeploymentException.rethrowAsDeploymentException(DeploymentException.java:53)
at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1050)
at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1015)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
at $Proxy9.deploy(Unknown Source)
at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:634)
at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
at org.jboss.deployment.scanner.AbstractDeploymentScanner.startService(AbstractDeploymentScanner.java:336)
at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
at $Proxy0.start(Unknown Source)
at org.jboss.system.ServiceController.start(ServiceController.java:417)
at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
at $Proxy4.start(Unknown Source)
at org.jboss.deployment.SARDeployer.start(SARDeployer.java:302)
at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:766)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
at $Proxy5.deploy(Unknown Source)
at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:482)
at org.jboss.system.server.ServerImpl.start(ServerImpl.java:362)
at org.jboss.Main.boot(Main.java:200)
at org.jboss.Main$1.run(Main.java:508)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.ExceptionInInitializerError
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at java.lang.Class.getEnumConstants(Class.java:2903)
at java.util.EnumMap.<init>(EnumMap.java:109)
at com.sun.xml.bind.v2.model.impl.RuntimeEnumLeafInfoImpl.<init>(RuntimeEnumLeafInfoImpl.java:83)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.createEnumLeafInfo(RuntimeModelBuilder.java:103)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.createEnumLeafInfo(RuntimeModelBuilder.java:79)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getClassInfo(ModelBuilder.java:207)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:98)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:79)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getClassInfo(ModelBuilder.java:192)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:93)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:79)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getTypeInfo(ModelBuilder.java:298)
at com.sun.xml.bind.v2.model.impl.TypeRefImpl.calcRef(TypeRefImpl.java:92)
at com.sun.xml.bind.v2.model.impl.TypeRefImpl.getTarget(TypeRefImpl.java:69)
at com.sun.xml.bind.v2.model.impl.RuntimeTypeRefImpl.getTarget(RuntimeTypeRefImpl.java:58)
at com.sun.xml.bind.v2.model.impl.RuntimeTypeRefImpl.getTarget(RuntimeTypeRefImpl.java:51)
at com.sun.xml.bind.v2.model.impl.ElementPropertyInfoImpl$1.get(ElementPropertyInfoImpl.java:74)
at com.sun.xml.bind.v2.model.impl.ElementPropertyInfoImpl$1.get(ElementPropertyInfoImpl.java:77)
at java.util.AbstractList$Itr.next(AbstractList.java:422)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getClassInfo(ModelBuilder.java:238)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:98)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:79)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getClassInfo(ModelBuilder.java:192)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:93)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:79)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getTypeInfo(ModelBuilder.java:298)
at com.sun.xml.bind.v2.model.impl.TypeRefImpl.calcRef(TypeRefImpl.java:92)
at com.sun.xml.bind.v2.model.impl.TypeRefImpl.getTarget(TypeRefImpl.java:69)
at com.sun.xml.bind.v2.model.impl.RuntimeTypeRefImpl.getTarget(RuntimeTypeRefImpl.java:58)
at com.sun.xml.bind.v2.model.impl.RuntimeTypeRefImpl.getTarget(RuntimeTypeRefImpl.java:51)
at com.sun.xml.bind.v2.model.impl.ElementPropertyInfoImpl$1.get(ElementPropertyInfoImpl.java:74)
at com.sun.xml.bind.v2.model.impl.ElementPropertyInfoImpl$1.get(ElementPropertyInfoImpl.java:77)
at java.util.AbstractList$Itr.next(AbstractList.java:422)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getClassInfo(ModelBuilder.java:238)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:98)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:79)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getClassInfo(ModelBuilder.java:192)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:93)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:79)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getTypeInfo(ModelBuilder.java:298)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getTypeInfo(ModelBuilder.java:313)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:432)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:286)
at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:139)
at com.sun.xml.bind.api.JAXBRIContext.newInstance(JAXBRIContext.java:105)
at com.sun.xml.bind.api.JAXBRIContext.newInstance(JAXBRIContext.java:116)
at org.jboss.ws.metadata.builder.jaxws.JAXWSMetaDataBuilder.createJAXBContext(JAXWSMetaDataBuilder.java:921)
at org.jboss.ws.metadata.builder.jaxws.JAXWSWebServiceMetaDataBuilder.buildWebServiceMetaData(JAXWSWebServiceMetaDataBuilder.java:146)
at org.jboss.ws.metadata.builder.jaxws.JAXWSServerMetaDataBuilder.setupProviderOrWebService(JAXWSServerMetaDataBuilder.java:50)
at org.jboss.ws.metadata.builder.jaxws.JAXWSMetaDataBuilderEJB3.buildMetaData(JAXWSMetaDataBuilderEJB3.java:78)
at org.jboss.wsf.stack.jbws.UnifiedMetaDataDeploymentAspect.create(UnifiedMetaDataDeploymentAspect.java:71)
at org.jboss.wsf.framework.deployment.DeploymentAspectManagerImpl.deploy(DeploymentAspectManagerImpl.java:115)
at org.jboss.wsf.container.jboss42.ArchiveDeployerHook.deploy(ArchiveDeployerHook.java:97)
at org.jboss.wsf.container.jboss42.DeployerInterceptor.start(DeployerInterceptor.java:90)
at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.start(SubDeployerInterceptorSupport.java:188)
at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:95)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
at $Proxy34.start(Unknown Source)
at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
... 67 more
Caused by: org.springframework.beans.factory.access.BootstrapException: Unable to return specified BeanFactory instance: factory key [coreBeanFactory], from group with resource name [classpath*:coreBeanContext.xml]; nested exception is org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'coreBeanFactory' must be of type [org.springframework.beans.factory.BeanFactory], but was actually of type [org.springframework.context.support.ClassPathXmlApplicationContext]
at org.springframework.beans.factory.access.SingletonBeanFactoryLocator.useBeanFactory(SingletonBeanFactoryLocator.java:410)
at xxx.common.utilities.spring.SpringContainerUtilities.getSingletonFactoryBean(SpringContainerUtilities.java:211)
at xxx.common.utilities.spring.SpringContainerUtilities.getCoreFocusDataSource(SpringContainerUtilities.java:145)
at xxx.common.collections.LabelSerialCollection.checkForConnection(LabelSerialCollection.java:687)
at xxx.common.collections.LabelSerialCollection.populate(LabelSerialCollection.java:813)
at xxx.common.collections.LabelSerialCollection.getInstance(LabelSerialCollection.java:342)
at xxx.common.enums.SEIProducts.<clinit>(SEIProducts.java:23)
... 133 more
Caused by: org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'coreBeanFactory' must be of type [org.springframework.beans.factory.BeanFactory], but was actually of type [org.springframework.context.support.ClassPathXmlApplicationContext]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:168)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:884)
at org.springframework.beans.factory.access.SingletonBeanFactoryLocator.useBeanFactory(SingletonBeanFactoryLocator.java:397)
... 139 more
2009-07-20 10:20:20,487 DEBUG [org.jboss.deployment.scanner.URLDeploymentScanner] Watch URL for: file:/C:/projects/libs/jboss-4.2.2.GA/server/default/deploy/validationservice.ear -> file:/C:/projects/libs/jboss-4.2.2.GA/server/default/deploy/validationservice.ear
2009-07-20 10:20:20,487 ERROR [org.jboss.deployment.scanner.URLDeploymentScanner] Incomplete Deployment listing:

Answer 1

我的猜测是 Spring 被两个不同的类加载器加载。如果是这种情况，则 Web 应用程序的类加载器无法将父上下文转换为 BeanFactory。

您的 WAR 打包在您的 EAR 中，对吗？如果是这样，您是否在 EAR 中有一个 Spring 副本，或者在 WAR 中是否有额外的 Spring JAR？