JodConverter抛出NoClassDefFoundError

Question

我对NoClassDefFoundError JODConverter有点问题..我使用的是netbeans 7.1.2、jdk 1.7、jodconverter2.2.2.jar和openoffice 3.3.0。我正在构建一个java企业应用程序，并且在ejb部分中添加了jodConverter2.2.jar库(右键单击ejb项目、属性、库，添加jar/文件夹)。但是当我运行应用程序时，我想转换一个.doc文件：

javax.ejb.EJBException: message-driven bean method public abstract void javax.jms.MessageListener.onMessage(javax.jms.Message) system exception
at com.sun.ejb.containers.MessageBeanContainer.deliverMessage(MessageBeanContainer.java:1134)
at com.sun.ejb.containers.MessageBeanListenerImpl.deliverMessage(MessageBeanListenerImpl.java:81)
at com.sun.enterprise.connectors.inbound.MessageEndpointInvocationHandler.invoke(MessageEndpointInvocationHandler.java:171)
at $Proxy271.onMessage(Unknown Source)
at com.sun.messaging.jms.ra.OnMessageRunner.run(OnMessageRunner.java:260)
at com.sun.enterprise.connectors.work.OneWork.doWork(OneWork.java:114)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.performWork(ThreadPoolImpl.java:497)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:540)
Caused by: java.lang.NoClassDefFoundError: com/sun/star/lang/XEventListener
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
at com.sun.enterprise.loader.ASURLClassLoader.findClass(ASURLClassLoader.java:756)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
at com.sun.enterprise.loader.ASURLClassLoader.findClass(ASURLClassLoader.java:756)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:410)
at java.lang.ClassLoader.loadClass(ClassLoader.java:410)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at managers.ElaboraDisp.converteInPdf(ElaboraDisp.java:145)
at managers.ElaboraDisp.onMessage(ElaboraDisp.java:100)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052)
at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124)
at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5388)
at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571)
at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:49)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:861)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:370)
at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5360)
at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5348)
at com.sun.ejb.containers.MessageBeanContainer.deliverMessage(MessageBeanContainer.java:1099)
... 7 more
Caused by: java.lang.ClassNotFoundException: com.sun.star.lang.XEventListener
at com.sun.enterprise.loader.ASURLClassLoader.findClassData(ASURLClassLoader.java:808)
at com.sun.enterprise.loader.ASURLClassLoader.findClass(ASURLClassLoader.java:696)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 42 more

Avvertenza: MDB00037: [UploadMultiplo:ElaboraDisp]: Message-driven bean invocation exception: [javax.ejb.EJBException]
Avvertenza: javax.ejb.EJBException
javax.ejb.EJBException
at com.sun.ejb.containers.BaseContainer.processSystemException(BaseContainer.java:5215)
at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:5113)
at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4901)
at com.sun.ejb.containers.MessageBeanContainer.afterMessageDeliveryInternal(MessageBeanContainer.java:1211)
at com.sun.ejb.containers.MessageBeanContainer.afterMessageDelivery(MessageBeanContainer.java:1186)
at com.sun.ejb.containers.MessageBeanListenerImpl.afterMessageDelivery(MessageBeanListenerImpl.java:86)
at com.sun.enterprise.connectors.inbound.MessageEndpointInvocationHandler.invoke(MessageEndpointInvocationHandler.java:143)
at $Proxy271.afterDelivery(Unknown Source)
at com.sun.messaging.jms.ra.OnMessageRunner.run(OnMessageRunner.java:328)
at com.sun.enterprise.connectors.work.OneWork.doWork(OneWork.java:114)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.performWork(ThreadPoolImpl.java:497)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:540)
Caused by: java.lang.NoClassDefFoundError: com/sun/star/lang/XEventListener
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
at com.sun.enterprise.loader.ASURLClassLoader.findClass(ASURLClassLoader.java:756)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
at com.sun.enterprise.loader.ASURLClassLoader.findClass(ASURLClassLoader.java:756)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:410)
at java.lang.ClassLoader.loadClass(ClassLoader.java:410)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at managers.ElaboraDisp.converteInPdf(ElaboraDisp.java:145)
at managers.ElaboraDisp.onMessage(ElaboraDisp.java:100)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052)
at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124)
at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5388)
at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571)
at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:49)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:861)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:370)
at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5360)
at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5348)
at com.sun.ejb.containers.MessageBeanContainer.deliverMessage(MessageBeanContainer.java:1099)
at com.sun.ejb.containers.MessageBeanListenerImpl.deliverMessage(MessageBeanListenerImpl.java:81)
at com.sun.enterprise.connectors.inbound.MessageEndpointInvocationHandler.invoke(MessageEndpointInvocationHandler.java:171)
at $Proxy271.onMessage(Unknown Source)
at com.sun.messaging.jms.ra.OnMessageRunner.run(OnMessageRunner.java:260)
... 3 more
Caused by: java.lang.ClassNotFoundException: com.sun.star.lang.XEventListener
at com.sun.enterprise.loader.ASURLClassLoader.findClassData(ASURLClassLoader.java:808)
at com.sun.enterprise.loader.ASURLClassLoader.findClass(ASURLClassLoader.java:696)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 42 more


Avvertenza: MQJMSRA_MR2001: run:Caught Exception from onMessage():Redelivering:
javax.ejb.EJBException: message-driven bean method public abstract void javax.jms.MessageListener.onMessage(javax.jms.Message) system exception
at com.sun.ejb.containers.MessageBeanContainer.deliverMessage(MessageBeanContainer.java:1134)
at com.sun.ejb.containers.MessageBeanListenerImpl.deliverMessage(MessageBeanListenerImpl.java:81)
at com.sun.enterprise.connectors.inbound.MessageEndpointInvocationHandler.invoke(MessageEndpointInvocationHandler.java:171)
at $Proxy271.onMessage(Unknown Source)
at com.sun.messaging.jms.ra.OnMessageRunner.run(OnMessageRunner.java:260)
at com.sun.enterprise.connectors.work.OneWork.doWork(OneWork.java:114)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.performWork(ThreadPoolImpl.java:497)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:540)
Caused by: java.lang.NoClassDefFoundError: com/artofsolving/jodconverter/openoffice/connection/SocketOpenOfficeConnection
at managers.ElaboraDisp.converteInPdf(ElaboraDisp.java:145)
at managers.ElaboraDisp.onMessage(ElaboraDisp.java:100)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052)
at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124)
at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5388)
at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571)
at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:49)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:861)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:370)
at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5360)
at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5348)
at com.sun.ejb.containers.MessageBeanContainer.deliverMessage(MessageBeanContainer.java:1099)
... 7 more

Informazioni: MQJMSRA_MR1101: run:Message returned & marked for routing to the DMQ
Avvertenza: MDB00037: [UploadMultiplo:ElaboraDisp]: Message-driven bean invocation    exception: [javax.ejb.EJBException]
Avvertenza: javax.ejb.EJBException
javax.ejb.EJBException
at com.sun.ejb.containers.BaseContainer.processSystemException(BaseContainer.java:5215)
at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:5113)
at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4901)
at com.sun.ejb.containers.MessageBeanContainer.afterMessageDeliveryInternal(MessageBeanContainer.java:1211)
at com.sun.ejb.containers.MessageBeanContainer.afterMessageDelivery(MessageBeanContainer.java:1186)
at com.sun.ejb.containers.MessageBeanListenerImpl.afterMessageDelivery(MessageBeanListenerImpl.java:86)
at com.sun.enterprise.connectors.inbound.MessageEndpointInvocationHandler.invoke(MessageEndpointInvocationHandler.java:143)
at $Proxy271.afterDelivery(Unknown Source)
at com.sun.messaging.jms.ra.OnMessageRunner.run(OnMessageRunner.java:328)
at com.sun.enterprise.connectors.work.OneWork.doWork(OneWork.java:114)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.performWork(ThreadPoolImpl.java:497)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:540)
Caused by: java.lang.NoClassDefFoundError: com/artofsolving/jodconverter/openoffice/connection/SocketOpenOfficeConnection
at managers.ElaboraDisp.converteInPdf(ElaboraDisp.java:145)
at managers.ElaboraDisp.onMessage(ElaboraDisp.java:100)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052)
at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124)
at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5388)
at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571)
at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:49)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:861)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:370)
at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5360)
at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5348)
at com.sun.ejb.containers.MessageBeanContainer.deliverMessage(MessageBeanContainer.java:1099)
at com.sun.ejb.containers.MessageBeanListenerImpl.deliverMessage(MessageBeanListenerImpl.java:81)
at com.sun.enterprise.connectors.inbound.MessageEndpointInvocationHandler.invoke(MessageEndpointInvocationHandler.java:171)
at $Proxy271.onMessage(Unknown Source)
at com.sun.messaging.jms.ra.OnMessageRunner.run(OnMessageRunner.java:260)
... 3 more

转换的代码是标准的：

    File inputFile=new File("document.doc");
    File outputFile=new File("document.pdf");
    OpenOfficeConnection connection = new SocketOpenOfficeConnection(8100);
    connection.connect();

    // convert
    DocumentConverter converter = new OpenOfficeDocumentConverter(connection);
    converter.convert(inputFile, outputFile);

    // close the connection
    connection.disconnect();

进入终端：

soffice -headless -accept="socket,host=127.0.0.1,port=8100;urp;" -nofirststartwizard

我不明白为什么我有这个例外:(

PS。在war部分，我添加了一个带有库的文件夹"lib“(jodconverter2.2.2.jar)。

Answer 1

当在类路径中找不到类时，将引发NoClassDefFoundError异常。因此，如果您试图在ejb中访问这个类，那么它必须是可用的。

如果您在.war文件中添加了lib文件夹，那么ejb .jar将看不到位于.war文件下的lib文件夹。

您需要在.ear文件中创建lib文件夹，并在application.xml文件中指定用于这两者的库目录:您的web应用程序.war和ejb .jar。

<?xml version="1.0" encoding="UTF-8"?>
<application xmlns="http://java.sun.com/xml/ns/javaee"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/application_6.xsd"
             version="6">
    <display-name>yourapp</display-name>
    <module>
        <ejb>yourapp-ejb.jar</ejb>
    </module>
    <module>
        <web>
            <web-uri>yourapp.war</web-uri>
            <context-root>/</context-root>
        </web>
    </module>
    <library-directory>lib</library-directory>
</application>

<library-directory>lib</library-directory>这一行指定您的lib目录在.ear存档中。此外，您还需要从.war文件中删除lib文件夹。