我现在非常绝望,因为我正在构建一个分成几个项目的小应用程序。有一个使用 Vaadin 的Web应用程序和一个EJB容器,它应该使用 JDO 和 DataNucleus 执行持久性操作。这个洞项目是用Maven构建的,现在我很高兴出现了一个EAR档案。
EAR文件的内容对我来说是正确的。其中包含所有依赖项JAR,甚至在包含WAR文件中重复。它在没有任何错误的情况下部署到 GlassFish 服务器,但是当我调用URL时,我得到了ClassNotFoundException
类的javax.jdo.JDOHelper
。 JAR jdo-api-3.0.jar
存在,但GlassFish无法找到它。
但为什么呢?有人能告诉我吗?请!
...和堆栈跟踪...;)de.igeri.mmorpg.*
的东西是我的项目。但我想,你已经猜到了。
java.lang.NoClassDefFoundError: javax/jdo/JDOHelper
at de.igeri.mmorpg.common.dao.JDOManager.(JDOManager.java:22)
at de.igeri.mmorpg.common.dao.JDOManager.(JDOManager.java:14)
at de.igeri.mmorpg.common.dao.BuildingBeanFactory.getAvailable(BuildingBeanFactory.java:29)
at de.igeri.mmorpg.ui.BuildingUiFactory.getAvailable(BuildingUiFactory.java:26)
at de.igeri.mmorpg.MmorpgApplication.createBuildingsPanel(MmorpgApplication.java:75)
at de.igeri.mmorpg.MmorpgApplication.createBuildWindow(MmorpgApplication.java:58)
at de.igeri.mmorpg.MmorpgApplication.createLayout(MmorpgApplication.java:44)
at de.igeri.mmorpg.MmorpgApplication.init(MmorpgApplication.java:29)
at com.vaadin.Application.start(Application.java:554)
at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.startApplication(AbstractApplicationServlet.java:1182)
at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:466)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1534)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:326)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:227)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:228)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:822)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:719)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1013)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:636)
Caused by: java.lang.ClassNotFoundException: javax.jdo.JDOHelper
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:321)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
... 37 more
答案 0 :(得分:0)
我的建议是将您的jdo api和datanucleus库添加到您的应用服务器作为模块然后在maven中您可以添加依赖项
并添加datanucleus maven插件,如下所示:
<plugin>
<groupId>org.datanucleus</groupId>
<artifactId>datanucleus-maven-plugin</artifactId>
<version>4.0.2</version>
<configuration>
<!-- <log4jConfiguration>src/main/resources/log4j.properties</log4jConfiguration> -->
<!-- this usefull if you dont want to get too long command error -->
<verbose>false</verbose>
</configuration>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>enhance</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
然后最重要的部分你必须在清单文件中添加你对datanucleus的依赖!!!我很确定在你的情况下这是问题所在。
在WildFly中你可以这样做:
<plugin>
<groupId>org.wildfly.plugins</groupId>
<artifactId>wildfly-maven-plugin</artifactId>
<version>${version.wildfly.maven.plugin}</version>
<inherited>true</inherited>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
</manifest>
<addMavenDescriptor>false</addMavenDescriptor>
<manifestEntries>
<Dependencies>deployment.datanucleus-jdo-jca-5.0.0-m1.rar,
javax.jdo</Dependencies>
</manifestEntries>
</archive>
</configuration>
</plugin>
如果您没有清楚地使用jca适配器,则可以删除该部分。 或者,您可以将maven设置为将部署描述符或清单文件等资源添加到包INF目录中。