使用Tomcat + JPA +休眠時出錯

我嘗試在Tomcat 7上部署應用程序。該應用程序正在使用JPA和Hibernate。當我米運行應用程序，我不斷收到以下異常：使用Tomcat + JPA +休眠時出錯

SEVERE: Servlet.service() for servlet [Faces Servlet] in context with path [/amazontestapplcation] threw exception [java.lang.NoClassDefFoundError: javax/persistence/Persistence] with root cause 
java.lang.ClassNotFoundException: javax.persistence.Persistence 
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1711) 
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556) 
    at com.example.service.EMFService.<clinit>(EMFService.java:8) 
    at com.example.service.UserHandler.getAllUsers(UserHandler.java:30) 
    at com.example.managedbeans.LoginBean.authenticate(LoginBean.java:51) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.apache.el.parser.AstValue.invoke(AstValue.java:264) 
    at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278) 
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105) 
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88) 
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) 
    at javax.faces.component.UICommand.broadcast(UICommand.java:315) 
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794) 
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259) 
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) 
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565) 
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source)

所有需要的jar包含在類路徑中。我在論壇上讀到，解決方案可能是複製Tomcat lib文件夾中所有與休眠JPA相關的jar文件。但我不想那麼做。爲什麼Peristence jar無法加載，仍然很奇怪。下面你看到我的pom.xml文件：

<dependencies> 
    <dependency> 
     <groupId>org.hibernate.javax.persistence</groupId> 
     <artifactId>hibernate-jpa-2.0-api</artifactId> 
     <version>1.0.1.Final</version> 
    </dependency> 
    <dependency> 
     <groupId>org.hibernate</groupId> 
     <artifactId>hibernate-core</artifactId> 
     <version>4.1.0.Final</version> 
    </dependency> 
    <dependency> 
     <groupId>org.hibernate</groupId> 
     <artifactId>hibernate-entitymanager</artifactId> 
     <version>4.1.0.Final</version> 
    </dependency> 
    <dependency> 
     <groupId>javax</groupId> 
     <artifactId>javaee-api</artifactId> 
     <version>6.0</version> 
    </dependency> 
</dependencies>

有沒有辦法，我米缺少相關性的機會呢？添加jars int tomcat lib文件夾是個好主意嗎？任何人有關於如何解決我的問題的任何其他想法？ Thnx

來源

2012-11-23 panipsilos

上面顯示了您的項目的Maven依賴關係，用於編譯它。它不知道這些依賴關係是否在生成的webapp的WEB-INF/lib目錄中。檢查一下。 –

我正在使用Hibernate 3，並且javax.persistence.Persistence類位於hibernate-jpa-2.0-api-1.0.1.Final.jar（由於較新的Hibernate版本，您的名稱可能會略有不同）。請檢查您是否有WEB-INF/lib。

來源

2012-11-23 16:48:52 mindas

對，它在WEB-INF/lib中。 thnx mindas – panipsilos

使用Tomcat + JPA +休眠時出錯

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