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java - 由 : java. lang.ClassNotFoundException : com. db4o.ObjectContainer 引起

转载 作者:行者123 更新时间:2023-11-29 05:49:59 25 4
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Possible Duplicate:
can’t locate db4o database file

我正在尝试使用 DB4O 和 JSF 创建一个简单的 CRUD 应用程序。在我的网络项目中,我有两个包:

  1. com.crud.bean 包含 CRUDClient.java
  2. com.crud.entities 包含 DB4O 实体 Client.java

webContent 包含一个 JSP 文件 addClient.jsp,其中包含一个带有客户端必要字段的表单。我将在 faces-config.xml 中将 CRUDClient.java 声明为托管 bean,以便在 JSP 文件中使用它的功能和属性。

但是当我运行这个项目时,我得到了以下错误

15:44:32,444 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-4)     MSC00001:Failed to start service     jboss.deployment.unit."DB_WEB.war".POST_MODULE:org.jboss.msc.service.StartException in service jboss.deployment.unit."DB_WEB.war".POST_MODULE: Failed to process phase POST_MODULE     of deployment     "DB_WEB.war"atorg.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:119) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.ja va:1811) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [rt.jar:1.7.0_01]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [rt.jar:1.7.0_01]
at java.lang.Thread.run(Unknown Source) [rt.jar:1.7.0_01]
Caused by: java.lang.NoClassDefFoundError: com/db4o/ObjectContainer
at java.lang.Class.getDeclaredConstructors0(Native Method) [rt.jar:1.7.0_01]
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source) [rt.jar:1.7.0_01]
at java.lang.Class.getConstructor0(Unknown Source) [rt.jar:1.7.0_01]
at java.lang.Class.getConstructor(Unknown Source) [rt.jar:1.7.0_01]
at org.jboss.as.web.deployment.jsf.JsfManagedBeanProcessor.deploy(JsfManagedBeanProcessor.java:108)
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService. java:113) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]
... 5 more
Caused by: java.lang.ClassNotFoundException: com.db4o.ObjectContainer from [Module "deployment.DB_WEB.war:main" from Service Module Loader]
at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190)
at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)
at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)
at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)
at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)
... 11 more

这是怎么引起的,我该如何解决?

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