JBoss：EAR中的WAR文件在类路径上找不到JAR库 [英] JBoss: WAR file in EAR can't find JAR library on classpath

问题描述

我在JBoss 4.3-eap上部署了捆绑的战争，jar和配置文件（.properties文件）的问题。这是我的耳朵结构：

I am having a problem deploying an ear with bundled wars, jars, and configuration files (.properties files) on JBoss 4.3-eap. Here is my ear structure:

+app.ear   
  +lib  
    *.jar libraries that the war's use  
    +classes  
      *.properties and other configuration files 
  +META-INF  
    application.xml  
    jbos-app.xml  
  app.war  
  app2.war  
  appn.war  

我的jboss中有以下-app.xml：

I have the following in my jboss-app.xml :

<jboss-app>
  <jmx-name>app.startup.JbossStartUpServer:service=JbossStartUpService</jmx-name>
</jboss-app>    

我的application.xml如下所示：

My application.xml looks like this:

<application id="app_id">
  <display-name>App>/display-name>
  <description>TheApp>/description>
<!--  
  <module  id="core">
    <java>lib/core.jar</java>
  </module>

  <module id="tag">
    <java>lib/tag.jar</java>
  </module>
-->  
  <module id="app">
    <web>
      <web-uri>app.war</web-uri>
      <context-root>/</context-root>
    </web>
  </module> 

  <module id="app2">
    <web>
      <web-uri>app2.war</web-uri>
      <context-root>/app2</context-root>
    </web>
  </module> 

  <module id="appn">
    <web>
      <web-uri>appn.war</web-uri>
      <context-root>/appn</context-root>
    </web>
  </module>

  <security-role id="secRole">
    <description>users</description>
    <role-name id="appRoleName">users</role-name>
  </security-role>

  <library-directory>lib</library-directory>

</application>

基本上，在部署耳朵时，遇到一个我的一个战争找不到的问题一个类在 core.jar 文件（ java.lang.NoClassDefFoundErro r）。我认为这是因为战争没有找到这个图书馆，即使它在 lib 文件夹/类路径中。如果我尝试取消注释前两个模块以添加第一方库（ core.jar 和 tag.jar ）突然之间，不能再找到这些属性文件（他们现在位于 lib / classes 中，所以我希望他们被拿起来理想情况下，我想将类放在自己的目录中，并将它分开添加到类路径，但现在我只是想让这个工作）。

Basically, upon deploying the ear, I run into an issue where one of my wars can't find a class in the core.jar file (java.lang.NoClassDefFoundError). I think this is due to the fact that the war is not finding this library, even though it is in the lib folder/classpath. If I try to uncomment the first two modules to add the first party libraries (core.jar and tag.jar), all of a sudden the properties files can no longer be found (they are located, for now, in lib/classes, so that, I hope anyway, they are picked up by the classloader. Ideally I'd like to put classes in its own directory and add it to the classpath separately, but for now I am just trying to make this work).

我已经尝试过其他一些事情，包括手动添加 core.jar 到战争的 manifest.mf 文件，在 jboss-service.xml 文件中将 UseJBossWebLoader 更改为true在 jboss-web.deployer 之下，以及上述的各种组合，没有成功。我从类路径（ lib 文件夹）中输入类目录，并且我的任何属性文件都没有被拾取，或战争无法从罐子里进入适当的课堂。我认为必须有一些配置是错误的，虽然我已经尝试阅读JBoss做EAR部署和类加载的方式，但我似乎不能适应我目前的设置。

I have tried some other things, including manually adding core.jar to the war's manifest.mf file, changing UseJBossWebLoader to true in the jboss-service.xml file under the jboss-web.deployer, and various combinations of the above, to no success. I either lose the classes directory from the classpath (lib folder) and none of my properties files get picked up, or the war can't access the proper class from the jar. I think there must be some configuration that is wrong, and while I've tried reading up on the way JBoss does EAR deployments and classloading, I can't seem to adapt it to my current setup.

任何建议将不胜感激。

Any suggestions would be greatly appreciated.

以下是我一直在看的网站：

Raible Designs JBoss ClassLoader Logic

Here are some sites that I have been looking at:
Raible Designs JBoss ClassLoader Logic

这些只是我看过的几个网站。这些问题也可能来自于项目的设置，因为这是一个大的已建立的项目（在一定程度上）从Weblogic部署迁移到Jboss。所以如果有什么应该工作，但是没有，这可能是一些代码/项目配置的问题。不幸的是，我现在还不知道它是否与JBoss相关的问题，或项目的问题。

These are just a few of the sites I have looked at. The problems might stem from the setup of the project as well, as this is a large established project that is (to an extent) being migrated from a weblogic deployment to Jboss. So if there is anything that SHOULD work, but doesn't, it might be an issue with some of the code/project configuration. Unfortunately, I am not at the point yet where I can tell if its a JBoss related problem, or a problem with the project.

推荐答案

p> application.xml 中的< library-directory> 标签是JavaEE5功能，我不认为JBoss 4.3完全符合JavaEE5（可以做EJB3，是的，但只是部分支持）。

The <library-directory> tag in application.xml is a JavaEE5 feature, and I don't think that JBoss 4.3 is fully JavaEE5-compliant (it can do EJB3, yes, but it's only partial support).

所以你需要回到使用明确声明的JAR文件：

So you need to go back to using explicitly declared JAR files:

<module>
    <java>lib/core.jar</java>
</module>

对于您的属性文件，您需要添加他们所在的目录作为java模块，所以例如：

As for your properties files, you need to add the directory that they're in as a java module, so for your example:

<module>
    <java>lib/classes</java>
</module>

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