将docx4j库与jboss 7一起使用 [英] Use docx4j library with jboss 7

问题描述

我尝试使用pptx4j库生成一个pptx.我可以成功生成一个pptx.然后，我将代码应用于在jboss 7服务器上运行的大型项目.项目已成功部署在服务器上.但是，当我尝试运行该应用程序时，会出现以下异常.

I try to generate a pptx using pptx4j library. I could generate a pptx successfully. Then I applied the code to a huge project that run on the jboss 7 server. Project is sucessfully deployed on the server. But when I'm trying to run the application it gives following exception.

java.lang.NoClassDefFoundError:com/sun/xml/internal/bind/marshaller/NamespacePrefixMapper

java.lang.NoClassDefFoundError: com/sun/xml/internal/bind/marshaller/NamespacePrefixMapper

该异常发生在代码的下一行.

That exception is occurred for following line in the code.

PresentationMLPackage presentationMLPackage = PresentationMLPackage
                .createPackage(); 

在jboss 7服务器上是否有一种特殊的方式来运行docx4j库.我在互联网上搜索了更多内容，但找不到解决方案.

Is there a special way run docx4j library on the jboss 7 server. I searched more on Internet but I couldn't find a solution.

推荐答案

JBoss AS 7引入了模块(捆绑)的概念，该概念极大地改变了类的加载方式.您应该熟悉这个概念:

JBoss AS 7 introduced the concept of modules (bundles) which drastically changed how classes get loaded. You should get yourself familiar with this concept:

https://docs.jboss.org/author/display/AS71/Class + Loading + in + AS7

jboss-deployment-structure.xml是JBoss特定的部署描述符，可用于以细粒度方式控制类加载.应将其放在META-INF(或用于Web部署的WEB-INF)的顶级部署中.它可以执行以下操作:

jboss-deployment-structure.xml is a JBoss specific deployment descriptor that can be used to control class loading in a fine grained manner. It should be placed in the top level deployment, in META-INF (or WEB-INF for web deployments). It can do the following:

• 防止自动依赖项被添加
• 添加其他依赖项
• 定义其他模块
• 更改EAR部署的隔离类加载行为
• 将其他资源根添加到模块中

当您在JBoss AS 7中收到 NoClassDefFoundError 时，您可以打赌您某个地方缺少依赖项.对于您的特定情况，您需要添加对模块 com.sun.xml.bind 的依赖.

When you get a NoClassDefFoundError in JBoss AS 7 you can bet that you have a missing dependency somewhere. As for your specific case, you need to add a dependency on module com.sun.xml.bind.

docx4j 甚至还有一个页面:

http://www.docx4java.org/forums/jboss-f29/jboss-7-config-t1678.html

要使docx4j在您的WAR中工作，您只需要包含WEB-INF/jboss-deployment-structure.xml，其中包含:

to get docx4j working in your WAR, you just need to include WEB-INF/jboss-deployment-structure.xml containing:

<jboss-deployment-structure xmlns="urn:jboss:deployment-structure:1.1">
    <deployment>
        <dependencies>
            <module name="com.sun.xml.bind" />
       </dependencies>
    </deployment>
</jboss-deployment-structure>

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