Я разрабатываю EAR-приложение, используя EJB, JPA и Vaadin для веб-интерфейса. Сервер приложений - GlassFish 3.1.1.
Файл DofApplicationServlet.java
package test.servlet;
import com.vaadin.Application;
import com.vaadin.terminal.gwt.server.AbstractApplicationServlet;
import test.ejb.TestBean;
import javax.ejb.EJB;
import javax.persistence.EntityManagerFactory;
import javax.persistence.PersistenceUnit;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
public class DofApplicationServlet extends AbstractApplicationServlet {
@EJB
private TestBean testBean;
@PersistenceUnit(name="mainPU")
private EntityManagerFactory emf;
@Override
protected Application getNewApplication(HttpServletRequest httpServletRequest) throws ServletException {
return new DofApplication(testBean, emf);
}
@Override
protected Class<? extends Application> getApplicationClass() throws ClassNotFoundException {
return DofApplication.class;
}
}
Файл DofApplication.java
package test.servlet;
import com.vaadin.Application;
import com.vaadin.ui.Button;
import com.vaadin.ui.Label;
import com.vaadin.ui.TextField;
import com.vaadin.ui.Window;
import test.ejb.TestBean;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Query;
public class DofApplication extends Application {
private TestBean testBean;
private Label labelResult;
private Label labelCount;
private Label labelUser;
private int counter;
private EntityManagerFactory emf;
public DofApplication(TestBean testBean, EntityManagerFactory emf) {
this.testBean = testBean;
this.emf = emf;
}
@Override
public void init() {
Window wnd = new Window();
final TextField tfLogin = new TextField("login");
wnd.addComponent(tfLogin);
final TextField tfPass = new TextField("password");
wnd.addComponent(tfPass);
labelResult = new Label("result");
wnd.addComponent(labelResult);
labelCount = new Label("Counter");
wnd.addComponent(labelCount);
labelUser = new Label("Current user");
wnd.addComponent(labelUser);
Button btnLogin = new Button("Login");
wnd.addComponent(btnLogin);
Button btnSess = new Button("Session");
wnd.addComponent(btnSess);
btnLogin.addListener(new Button.ClickListener() {
public void buttonClick(Button.ClickEvent clickEvent) {
boolean auth = testBean.checkOracleConnection(tfLogin.getValue().toString(), tfPass.getValue().toString());
if (auth) {
labelResult.setCaption("auth ok " + tfLogin.getValue().toString());
labelUser.setCaption("Current username: " + tfLogin.getValue().toString());
} else {
labelResult.setCaption("auth fail");
labelUser.setCaption("Current username: NONE");
}
}
});
btnSess.addListener(new Button.ClickListener() {
public void buttonClick(Button.ClickEvent clickEvent) {
EntityManager em = emf.createEntityManager(); // <-- emf is not null here in debugger, but call always returns exception
Query q = em.createQuery("SELECT c FROM CountryEntity c");
}
});
setMainWindow(wnd);
}
}
И исключение я получил в обработчике кликов btnSess:
[#|2011-09-09T17:42:51.769+0600|SEVERE|glassfish3.1.1|com.vaadin.Application|_ThreadID=20;_ThreadName=Thread-2;|Terminal error:
com.vaadin.event.ListenerMethod$MethodException
Cause: java.lang.IllegalStateException: Unable to retrieve EntityManagerFactory for unitName mainPU
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164)
at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1193)
at com.vaadin.ui.Button.fireClick(Button.java:539)
at com.vaadin.ui.Button.changeVariables(Button.java:206)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariableBurst(AbstractCommunicationManager.java:1299)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariables(AbstractCommunicationManager.java:1219)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleUidlRequest(AbstractCommunicationManager.java:735)
at com.vaadin.terminal.gwt.server.CommunicationManager.handleUidlRequest(CommunicationManager.java:296)
at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:501)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539)
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:330)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
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:662)
Caused by: java.lang.IllegalStateException: Unable to retrieve EntityManagerFactory for unitName mainPU
at com.sun.enterprise.container.common.impl.EntityManagerFactoryWrapper.getDelegate(EntityManagerFactoryWrapper.java:100)
at com.sun.enterprise.container.common.impl.EntityManagerFactoryWrapper.createEntityManager(EntityManagerFactoryWrapper.java:110)
at test.servlet.DofApplication$2.buttonClick(DofApplication.java:86)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:490)
... 35 more
|#]
Но в отладчике я вижу следующее:
Структура файла уха
ear.ear
-- META-INF
---- application.xml
---- persistence.xml
-- ejb.jar
-- war.war