在 WebLogic 上导致 lang.ClassCastException 的冲突是什么？答案

【问题标题】：What is the conflict that causes lang.ClassCastException on WebLogic?在 WebLogic 上导致 lang.ClassCastException 的冲突是什么？
【发布时间】：2017-01-28 02:09:34
【问题描述】：

当 WebLogic 服务器尝试自动部署我的应用程序时，我收到此错误：

lang.ClassCastException: weblogic.xml.jaxp.RegistryDocumentBuilderFactory 不能转换为 javax.xml.parsers.DocumentBuilderFactory

我做了一些研究，一些帖子说我应该从我的类路径中删除 xml-apis.jar。这实际上缓解了问题，但之后我的应用程序无法正常工作。所以我想知道是否还有其他方法可以解决这个问题。

我正在使用 WebLogix 12.1.3.0.0、Java 1.7 和 Spring 3.2.3。

完整的堆栈跟踪：

<Sep 20, 2016 11:21:40 AM EEST> <Warning> <HTTP> <BEA-101162> <User defined listener org.springframework.web.context.ContextLoaderListener failed: org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from ServletContext resource [/WEB-INF/applicationContext.xml]; nested exception is java.lang.ClassCastException: weblogic.xml.jaxp.RegistryDocumentBuilderFactory cannot be cast to javax.xml.parsers.DocumentBuilderFactory.
org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from ServletContext resource [/WEB-INF/applicationContext.xml]; nested exception is java.lang.ClassCastException: weblogic.xml.jaxp.RegistryDocumentBuilderFactory cannot be cast to javax.xml.parsers.DocumentBuilderFactory
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:412)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:174)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:209)
    Truncated. see log file for complete stacktrace
Caused By: java.lang.ClassCastException: weblogic.xml.jaxp.RegistryDocumentBuilderFactory cannot be cast to javax.xml.parsers.DocumentBuilderFactory
    at javax.xml.parsers.DocumentBuilderFactory.newInstance(Unknown Source)
    at org.springframework.beans.factory.xml.DefaultDocumentLoader.createDocumentBuilderFactory(DefaultDocumentLoader.java:89)
    at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:70)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:388)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
    Truncated. see log file for complete stacktrace
> 
<Sep 20, 2016 11:21:40 AM EEST> <Error> <HTTP> <BEA-101216> <Servlet: "spring-dispatcher" failed to preload on startup in Web application: "nsi-client.war".
org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from ServletContext resource [/WEB-INF/applicationContext.xml]; nested exception is java.lang.ClassCastException: weblogic.xml.jaxp.RegistryDocumentBuilderFactory cannot be cast to javax.xml.parsers.DocumentBuilderFactory
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:412)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:174)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:209)
    Truncated. see log file for complete stacktrace
Caused By: java.lang.ClassCastException: weblogic.xml.jaxp.RegistryDocumentBuilderFactory cannot be cast to javax.xml.parsers.DocumentBuilderFactory
    at javax.xml.parsers.DocumentBuilderFactory.newInstance(Unknown Source)
    at org.springframework.beans.factory.xml.DefaultDocumentLoader.createDocumentBuilderFactory(DefaultDocumentLoader.java:89)
    at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:70)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:388)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
    Truncated. see log file for complete stacktrace
> 
<Sep 20, 2016 11:21:40 AM EEST> <Warning> <HTTP> <BEA-101162> <User defined listener org.springframework.web.context.ContextLoaderListener failed: java.lang.IllegalStateException: BeanFactory not initialized or already closed - call 'refresh' before accessing beans via the ApplicationContext.
java.lang.IllegalStateException: BeanFactory not initialized or already closed - call 'refresh' before accessing beans via the ApplicationContext
    at org.springframework.context.support.AbstractRefreshableApplicationContext.getBeanFactory(AbstractRefreshableApplicationContext.java:171)
    at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:1090)
    at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:1064)
    at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:1010)
    at org.springframework.web.context.ContextLoader.closeWebApplicationContext(ContextLoader.java:559)
    Truncated. see log file for complete stacktrace
> 
<Sep 20, 2016 11:21:40 AM EEST> <Error> <Deployer> <BEA-149231> <Unable to set the activation state to true for the application "nsi-client".
weblogic.application.ModuleException: java.lang.ClassCastException: weblogic.xml.jaxp.RegistryDocumentBuilderFactory cannot be cast to javax.xml.parsers.DocumentBuilderFactory
    at weblogic.application.internal.ExtensibleModuleWrapper.start(ExtensibleModuleWrapper.java:140)
    at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:124)
    at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:216)
    at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:211)
    at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:42)
    Truncated. see log file for complete stacktrace
Caused By: java.lang.ClassCastException: weblogic.xml.jaxp.RegistryDocumentBuilderFactory cannot be cast to javax.xml.parsers.DocumentBuilderFactory
    at javax.xml.parsers.DocumentBuilderFactory.newInstance(Unknown Source)
    at org.springframework.beans.factory.xml.DefaultDocumentLoader.createDocumentBuilderFactory(DefaultDocumentLoader.java:89)
    at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:70)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:388)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
    Truncated. see log file for complete stacktrace
>

【问题讨论】：

标签： java xml spring weblogic

【解决方案1】：

将您的 xml-apis.jar 放到 $JRE_HOME/lib/endorsed

$JRE_HOME是你的weblogic JRE（JDK）所在的目录

【讨论】：

你能帮我找到这个路径 $JRE_HOME/lib/endorsed 吗？我在 mac 10.11.6 El Capitan 上。我导航到 /Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/jre/lib 但那里没有认可的文件夹。谢谢！
只需在/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/H‌ome/jre/lib创建这个目录
我现在在启动 WebLogic 时遇到两个异常：1. java.lang.NoSuchMethodError: javax.xml.transform.TransformerFactory.setFeature(Ljava/lang/String;Z)V 2. java.lang.IllegalStateException: Unable to perform operation: post construct on weblogic.t3.srvr.servicewrappers.WSATTransactionService