如何告诉JBoss 4.2.3.GA首先在我的war文件lib目录中加载jar？ [英] How do I tell JBoss 4.2.3.GA to load jars in my war file lib directory first?

问题描述

我部署了一个web存档，该war引用了一个与$ JBOSS_HOME / server / default / lib中的jar文件冲突的jar文件。我可以手动删除有问题的罐子，但我更喜欢一种允许我在JBoss上指定罐子的解决方案。我甚至想告诉JBoss排除特定的罐子，如果可能的话。

I deploy a web archive and that war references a jar file that conflicts with those in $JBOSS_HOME/server/default/lib. I can go and remove the offending jars manually, but I'd prefer a solution that allows me to specify my jars over JBoss's. I would even like to just tell JBoss to exclude specific jars, if that's even possible.

我最接近的是在jboss-web.xml中添加一些内容我的战争的META-INF目录，但我显然没有在那里做某事。这就是我到目前为止：

The closest I've come was to add something in jboss-web.xml in my war's META-INF directory, but I'm clearly not doing something right there. This is what I have so far:

<?xml version="1.0" encoding="UTF-8"?>

<jboss-web>
  <class-loading java2ClassLoadingCompliance="false">
    <loader-repository>com.amce:archive=WHATEVER</loader-repository>
    <loader-repository-config>java2ParentDelegation=false</loader-repository-config>
  </class-loading>
</jboss-web>

如果出现以下错误，则会失败：

This fails spectacularly with errors like this:

ERROR [13]] Exception sending context initialized event to listener instance of class org.jboss.web.jsf.integration.config.JBossJSFConfigureListener
java.lang.ClassCastException: org.apache.xerces.jaxp.SAXParserFactoryImpl cannot be cast to javax.xml.parsers.SAXParserFactory
    at javax.xml.parsers.SAXParserFactory.newInstance(SAXParserFactory.java:128)
    at com.sun.faces.config.ConfigureListener$WebXmlProcessor.getConfiguredFactory(ConfigureListener.java:697)
    at com.sun.faces.config.ConfigureListener$WebXmlProcessor.scanForFacesServlet(ConfigureListener.java:669)
   ...

这个错误让我相信我只是错误地指定了jboss-web语法（某处有xml架构） ）？但是，我甚至不确定自己是否正走在正确的道路上。无论如何我还是可以在不修改JBoss的情况下做到这一点吗？

That error leads me to believe I'm just specifying the jboss-web syntax incorrectly (is there an xml schema somewhere)? However I'm not even sure I'm heading down the right path. Is there anyway I can do this without modifying JBoss in anyway?

推荐答案

java2ParentDelegation = false 。 请阅读此处了解更多详情。

Java EE类加载详细信息： Java EE类加载标准

Java EE class loading details: Java EE class loading standard

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