与jpa和eclipselink的jndi数据库连接

我尝试在Java中使用JNDI在Tomcat 5.5上结合eclipseLink / JPA设置数据库连接。 我已经在web.xml和context.xml中配置了JNDI资源。

数据库连接与JNDI一起使用，而不使用JPA和eclipseLink。 在为eclipseLink配置persistence.xml之后，我得到了以下exception。

我不知道如何正确配置persistence.xml以使用JNDI数据源进行数据库连接。

例外

WicketMessage: Method onFormSubmitted of interface org.apache.wicket.markup.html.form.IFormSubmitListener targeted at component [MarkupContainer [Component id = loginForm]] threw an exception Root cause: javax.naming.NamingException: This context must be accessed throught a java: URL at org.apache.naming.SelectorContext.parseName(SelectorContext.java:686) at org.apache.naming.SelectorContext.lookup(SelectorContext.java:121) at javax.naming.InitialContext.lookup(InitialContext.java:396) at org.eclipse.persistence.sessions.JNDIConnector.connect(JNDIConnector.java:110) at org.eclipse.persistence.sessions.JNDIConnector.connect(JNDIConnector.java:94) at org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:16 2) at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(Datab aseSessionImpl.java:579) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:228) at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:380) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:157) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:214) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:202) at de.company.myDs.controller.AbstractCrudController.getEntityManager(Unknown Source) at de.company.myDs.controller.UserController.loadUserByName(Unknown Source) at de.company.myDs.controller.LoginController.validateUserLogin(Unknown Source) at de.company.myDs.pages.LoginPage$1.onSubmit(Unknown Source) at org.apache.wicket.markup.html.form.Form.delegateSubmit(Form.java:1534) at org.apache.wicket.markup.html.form.Form.process(Form.java:934) at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:896) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:182) at org.apache.wicket.request.target.component.listener.ListenerInterfaceRequestTarget.processEvents(ListenerInterfaceRequestTarget.java:73) at org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92) at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1250) at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329) at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1428) at org.apache.wicket.RequestCycle.request(RequestCycle.java:545) at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:479) at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:312) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:873) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689) at java.lang.Thread.run(Thread.java:637) Complete stack: org.apache.wicket.WicketRuntimeException: Method onFormSubmitted of interface org.apache.wicket.markup.html.form.IFormSubmitListener targeted at component [MarkupContainer [Component id = loginForm]] threw an exception at org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:193) at org.apache.wicket.request.target.component.listener.ListenerInterfaceRequestTarget.processEvents(ListenerInterfaceRequestTarget.java:73) at org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92) at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1250) at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329) at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1428) at org.apache.wicket.RequestCycle.request(RequestCycle.java:545) at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:479) java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:182) at org.apache.wicket.request.target.component.listener.ListenerInterfaceRequestTarget.processEvents(ListenerInterfaceRequestTarget.java:73) at org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92) at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1250) at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329) at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1428) at org.apache.wicket.RequestCycle.request(RequestCycle.java:545) at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:479) javax.persistence.PersistenceException: Exception [EclipseLink-7060] (Eclipse Persistence Services - 2.1.0.v20100614-r7608): org.eclipse.persistence.exceptions.ValidationException Exception Description: Cannot acquire data source [java:comp/env/jdbc/myDs]. Internal Exception: javax.naming.NamingException: This context must be accessed throught a java: URL at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:408) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:157) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:214) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:202) at de.company.myDs.controller.AbstractCrudController.getEntityManager(Unknown Source) at de.company.myDs.controller.UserController.loadUserByName(Unknown Source) at de.company.myDs.controller.LoginController.validateUserLogin(Unknown Source) at de.company.myDs.pages.LoginPage$1.onSubmit(Unknown Source) at org.apache.wicket.markup.html.form.Form.delegateSubmit(Form.java:1534) at org.apache.wicket.markup.html.form.Form.process(Form.java:934) at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:896) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:182) at org.apache.wicket.request.target.component.listener.ListenerInterfaceRequestTarget.processEvents(ListenerInterfaceRequestTarget.java:73) at org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92) at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1250) at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329) at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1428) at org.apache.wicket.RequestCycle.request(RequestCycle.java:545) at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:479) Exception [EclipseLink-7060] (Eclipse Persistence Services - 2.1.0.v20100614-r7608): org.eclipse.persistence.exceptions.ValidationException Exception Description: Cannot acquire data source [java:comp/env/jdbc/myDs]. Internal Exception: javax.naming.NamingException: This context must be accessed throught a java: URL at org.eclipse.persistence.exceptions.ValidationException.cannotAcquireDataSource(ValidationException.java:464) at org.eclipse.persistence.sessions.JNDIConnector.connect(JNDIConnector.java:116) at org.eclipse.persistence.sessions.JNDIConnector.connect(JNDIConnector.java:94) at org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:162) at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:579) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:228) at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:380) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:157) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:214) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:202) at de.company.myDs.controller.AbstractCrudController.getEntityManager(Unknown Source) at de.company.myDs.controller.UserController.loadUserByName(Unknown Source) at de.company.myDs.controller.LoginController.validateUserLogin(Unknown Source) at de.company.myDs.pages.LoginPage$1.onSubmit(Unknown Source) at org.apache.wicket.markup.html.form.Form.delegateSubmit(Form.java:1534) at org.apache.wicket.markup.html.form.Form.process(Form.java:934) at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:896) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:182) at org.apache.wicket.request.target.component.listener.ListenerInterfaceRequestTarget.processEvents(ListenerInterfaceRequestTarget.java:73) at org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92) at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1250) at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329) at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1428) at org.apache.wicket.RequestCycle.request(RequestCycle.java:545) at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:479) 

web.xml中

 ...  DB Connection jdbc/myDs javax.sql.DataSource Container  ... 

的context.xml

 ...  ... 

persistence.xml中

 ...  org.eclipse.persistence.jpa.PersistenceProvider java:comp/env/jdbc/myDs false de.company.myDS.model.User  ... 

Answer 1

只需将JPAEclipseLinkSessionCustomizer类JPAEclipseLinkSessionCustomizer到项目中并配置persistence.xml，如下所示：

  org.eclipse.persistence.jpa.PersistenceProvider java:comp/env/jdbc/yourDs     

您只需要为Apache Tomcat提供此解决方法。

Answer 2

将数据源URL设置为“jdbc / myDs”
jdbc/myDs

Answer 3

我希望你能用给出的评论解决问题……

我通过添加一个属性“javax.persistence.nonJtaDataSource”修复它，其值与元素non-jta-data-source

Answer 4

我认为您需要为javax.naming.NamingException: This context must be accessed throught a java: URL编写一个变通方法javax.naming.NamingException: This context must be accessed throught a java: URLexceptionjavax.naming.NamingException: This context must be accessed throught a java: URL ，详见http://wiki.eclipse.org/EclipseLink/Examples/JPA/Tomcat_Web_Tutorial#Session_Customizer

另请参阅此链接，通过该问题进行调试

http://forums.java.net/jive/message.jspa?messageID=158622

Answer 5

2015年实现：我不确定是否需要Eclipselink SessionCustomizer。 在我的测试中所有工作都没有（Tomcat 7.x，Java 7.x，Eclipselink 2.4.x）。

一些较旧的材料提出了Tomcat 5/6的特定问题以及解决它的特殊方法。