Hi,
I think there two problems. One with the ejb and another with the
faces-config.xml.
1. The problem is that your EJB does not have any interface. You just
annotated it as @Local, but since UserSessionBean does not implement
any interface, there is no way to know what is the local business
interface. It should have been caught during verification, but that
looks like a bug. Please file an issue for that.
One way to fix your EJB is to:
@Stateful
@Local
public class UserSessionBean implements UserSessionBeanInterface{
// everything remains same here
}
public interface UserSessionBeanInterface {
// all the methods that you want to expose as business methods go
here: e.g.
String getName();
void setName(String name);
String newStudent();
}
Package this interface into ejb-jar along with other classes.
2. I don't know much about JSF, but I think <managed-bean> element can't
be used to directly refer to this bean class. I think, you should write
another JavaBean like this:
// a JavaBean where the session bean is injected.
public class MyBean {
@javax.ejb.EJB UserSessionBeanInterface sb;
// in this bean, you can use the session bean to create student.
}
and use it in your faces-config.xml as shown below:
<managed-bean>
<managed-bean-name>foo</managed-bean-name>
<managed-bean-class>MyBean</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
Package this into your war file.
Hope this helps. Refer to
http://weblogs.java.net/blog/ss141213/archive/2005/12/using_java_pers.html
for a discussion on a portable way to package your war and ejb classes
in an ear.
Thanks,
Sahoo
John Fagan wrote:
> Please help!
>
> I'm trying to write an application using JSF and EJB3. After several
> days and many variations I have had no success injecting the
> EntityManager in my session bean. It's always null!
>
> Using the following:
> Win XP
> Sun AS 9 PE
> JDK 1.5.0_06
> Eclipse 3.1 (tried the Glassfish plugin, but it wasn't working so
> created ant build script to package).
>
> The code is very simple test code. Nothing fancy.
>
> Application EAR file verifies with no problems. Server identifies EJB3
> and Web module fine. Web is packaged in WAR file and EJB3 classes with
> persistence.xml are packaged in a JAR. Both are packaged in the EAR.
>
> Server is setup with a connection pool to a Postgres data source
> (pings fine), jdbc resource is setup, as well. Toplink creates the
> table in the database fine, so connection and persistence.xml is not a
> likely problem.
>
> The page displays fine and the JSF servlet gets the return value of
> either "success" or "em-null" (always returns em-null in the server
> log). No errors or warnings in the server log except for create table
> warning (since it is already created).
>
> Does anyone have an idea on how to fix this problem?
> Does anyone have any simple examples of EJB3 session bean being
> accessed by JSF that will deploy and work on AS 9?
> Am I missing a deployment descriptor for the EJB (I understood that it
> was not needed for EJB3)?
>
> Take care,
> John
>
> John Fagan, CCP, SCJP, ACP
> John.Fagan_at_clarisource.com <mailto:John.Fagan_at_clarisource.com>
> http://www.clarisource.com
>
> UserSessionBean.java
> ---------------------------------------
> package edu.sunysb.pep.ejb3;
>
> import javax.ejb.Local;
> import javax.ejb.Stateful;
> import javax.persistence.EntityManager;
> import javax.persistence.PersistenceContext;
>
> @Stateful
> @Local
> public class UserSessionBean {
>
> @PersistenceContext
> EntityManager em;
>
> public UserSessionBean()
> {
> }
>
> private String name = "anon";
>
> public String getName() {
> return name;
> }
>
> public void setName(String name) {
> this.name = name;
> }
>
> public String newStudent()
> {
> Student student = new Student();
> student.setName("name");
>
> if(em == null)
> {
> return "em-null";
> }
> else
> {
> em.persist(student);
> return "success";
> }
> }
> }
>
> Home.jsp
> ---------------------------------------
> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
> <%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
> <%@ taglib prefix="f" uri="http://java.sun.com/jsf/core" %>
> <%@ taglib prefix="h" uri="http://java.sun.com/jsf/html" %>
> <f:view>
> <h:form id="LoginForm">
> <h:message for="LoginForm" styleClass="error" />
> <h:outputLabel value="User Name:" />
> <h:inputText id="username1" value="#{UserSessionBean.name}" />
> <br />
> <h:message for="username1" styleClass="error" />
> <h:commandButton action="#{UserSessionBean.newStudent}" value="Login" />
> </h:form>
> </f:view>
>
> faces-config.xml
> ---------------------------------------
> <?xml version='1.0' encoding='UTF-8'?>
> <faces-config xmlns="http://java.sun.com/xml/ns/javaee"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
> http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd"
> version="1.2">
>
> <navigation-rule>
> <from-view-id>/faces/Home.jsp</from-view-id>
> <navigation-case>
> <from-outcome>em-null</from-outcome>
> <to-view-id>/faces/Null.jsp</to-view-id>
> </navigation-case>
> </navigation-rule>
>
> <managed-bean>
> <managed-bean-name>UserSessionBean</managed-bean-name>
> <managed-bean-class>edu.sunysb.pep.ejb3.UserSessionBean</managed-bean-class>
> <managed-bean-scope>session</managed-bean-scope>
> </managed-bean>
>
> </faces-config>
>
> web.xml
> ---------------------------------------
> <?xml version="1.0" encoding="UTF-8"?>
> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
> http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
> <display-name>Test</display-name>
> <welcome-file-list>
> <welcome-file>index.jsp</welcome-file>
> </welcome-file-list>
>
> <context-param>
> <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
> <param-value>client</param-value>
> </context-param>
>
> <context-param>
> <param-name>javax.faces.application.CONFIG_FILES</param-name>
> <param-value>/WEB-INF/faces-config.xml</param-value>
> </context-param>
>
> <context-param>
> <param-name>com.sun.faces.validateXml</param-name>
> <param-value>true</param-value>
> <!--
>
> Set this flag to true if you want the JSF Reference
> Implementation to validate the XML in your faces-config.xml
> resources against the DTD. Default value is false.
>
> -->
> </context-param>
>
> <context-param>
> <param-name>com.sun.faces.verifyObjects</param-name>
> <param-value>true</param-value>
> <!--
> Set this flag to true if you want the JSF Reference
> Implementation to verify that all of the application objects
> you have configured (components, converters, renderers, and
> validators) can be successfully created. Default value is
> false.
>
> -->
> </context-param>
>
> <!-- Faces Servlet -->
> <servlet>
> <servlet-name>Faces Servlet</servlet-name>
> <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
> <load-on-startup>1</load-on-startup>
> </servlet>
>
> <!-- Faces Servlet Mapping -->
> <servlet-mapping>
> <servlet-name>Faces Servlet</servlet-name>
> <url-pattern>/jsf/*</url-pattern>
> </servlet-mapping>
>
> </web-app>
>
> persistence.xml
> ---------------------------------------
> <persistence xmlns="http://java.sun.com/xml/ns/persistence"
> version="1.0">
> <persistence-unit name="PEP">
> <jta-data-source>jdbc/PEP</jta-data-source>
> </persistence-unit>
> </persistence>
>
> build.xml
> ---------------------------------------
> <?xml version="1.0" encoding="UTF-8"?>
> <project name="Site.pipeline" default="deploy">
>
> <property name="web.application.name" value="Test" />
> <property name="web.deploy.dir"
> value="C:\Sun\AppServer\domains\domain1\autodeploy" />
> <property name="web.source" value="./WebContent/" />
>
> <property name="web.jar.name" value="./${web.application.name}.war"/>
> <property name="ejb.jar.name" value="./${web.application.name}_ejb3.jar"/>
> <property name="application.jar.name"
> value="./${web.application.name}.ear"/>
>
> <target name="init">
>
> <delete file="${web.jar.name}"/>
> <delete file="${ejb.jar.name}"/>
> <delete file="${application.jar.name}"/>
>
> </target>
>
> <target name="build" depends="init">
>
> </target>
>
> <target name="undeploy">
>
> <delete file="${web.deploy.dir}/${application.jar.name}" />
> <sleep seconds="4" />
>
> </target>
>
> <target name="deploy" depends="package-ear,undeploy">
>
> <copy file="${application.jar.name}" todir="${web.deploy.dir}" />
>
> </target>
>
> <target name="redeploy" depends="undeploy">
>
> <copy file="${application.jar.name}" todir="${web.deploy.dir}" />
>
> </target>
>
> <!-- Create the EJB 3 deployment file. -->
> <target name="package-ejb" depends="build">
>
> <jar destfile="${ejb.jar.name}">
> <fileset dir="./build/classes">
> <include name="**/*.class" />
> </fileset>
> <metainf dir=".">
> <include name="persistence.xml" />
> </metainf>
> </jar>
>
> </target>
>
> <!-- Create the Web deployment package. -->
> <target name="package-web" depends="build">
>
> <jar jarfile="${web.jar.name}">
>
> <fileset dir="${web.source}" />
>
> </jar>
>
> </target>
>
> <!-- Creates an ear file containing all the modules. -->
> <target name="package-ear" depends="package-ejb,package-web">
>
> <jar jarfile="${application.jar.name}">
>
> <fileset dir="." includes="*.jar,*.war" />
>
> <!--
> <metainf dir=".">
> <include name="application.xml" />
> </metainf>
> -->
> </jar>
>
> </target>
>
> <target name="verify" depends="package-ear">
>
> <!-- "verifier" conflicts with some driver test software on my
> computer, so the
> full path was specified to the Java EE 5 verifier. -->
> <exec dir="." executable="\Sun\AppServer\bin\verifier.bat"
> failonerror="true">
> <arg line="-d VerifierResults"/>
> <arg line="${application.jar.name}"/>
> </exec>
>
> </target>
>
> </project>