Describe how you have packaged the ear file.
glassfish_at_javadesktop.org wrote:
> Hi,
> I am trying to access the EJB (EJB3.0) from Servlet. I am getting the below error.
> I have tried both JNDI lookup and dependency injection. But none are working. I have included the Student.jar for the project StudentEE.war. The archieve is StudentEAR.ear
> No error is coming during compilation.
> -------------------------------------------------------------------------------------------------------------------
> [#|2008-10-02T15:36:46.000+0530|SEVERE|sun-appserver9.1|javax.enterprise.system.tools.deployment|_ThreadID=19;_ThreadName=Thread-162;_RequestID=bc2e35ce-a23e-4527-985c-2ab18269ef6e;|Class [ Lcom/session/StudentRemote; ] not found. Error while loading [ class control.CreateStudent ]|#]
>
> [#|2008-10-02T15:36:46.000+0530|WARNING|sun-appserver9.1|javax.enterprise.system.tools.deployment|_ThreadID=19;_ThreadName=Thread-162;_RequestID=bc2e35ce-a23e-4527-985c-2ab18269ef6e;|Error in annotation processing: java.lang.NoClassDefFoundError: Lcom/session/StudentRemote;|#]
>
> [#|2008-10-02T15:36:46.093+0530|INFO|sun-appserver9.1|javax.enterprise.system.tools.deployment|_ThreadID=19;_ThreadName=Thread-162;|deployed with moduleid = StudentEE|#]
>
> [#|2008-10-02T15:37:02.156+0530|WARNING|sun-appserver9.1|javax.enterprise.system.stream.err|_ThreadID=17;_ThreadName=httpSSLWorkerThread-8080-1;_RequestID=dce068e1-2775-4848-9edb-9cf5976609dd;|
> java.lang.NullPointerException
> at control.CreateStudent.processRequest(CreateStudent.java:56)
> at control.CreateStudent.doPost(CreateStudent.java:90)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:738)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
> at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:411)
> at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:290)
> at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:271)
> at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:202)
> at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
> at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
> at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
> at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:206)
> at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
> at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
> at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)
> at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:150)
> at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
> at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
> at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)
> at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:272)
> at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:637)
> at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:568)
> at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:813)
> at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
> at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
> at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
> at com.sun.enterprise.web.portunif.PortUnificationPipeline$PUTask.doTask(PortUnificationPipeline.java:380)
> at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)
> at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)
> |#]
> -------------------------------------------------------------------------------------------------------------------
>
> The code is as given below.
>
> -------------------------------------------------------------------------------------------------------------------
> StudentRemote.java (Remote Interface)
>
> package com.session;
>
> import javax.ejb.Remote;
>
> @Remote
> public interface StudentRemote {
> public void populate(String firstName, String lastName, int standard);
> }
> -------------------------------------------------------------------------------------------------------------------
> StudentRemoteBean.java (Bean )
>
> package com.session;
>
> import javax.ejb.Stateless;
> import com.session.StudentRemote;
>
> public @Stateless class StudentRemoteBean implements StudentRemote {
>
> public void populate(String firstName, String lastName, int standard) {
> // TODO Auto-generated method stub
> String s=Integer.toString(standard);
> System.out.println("Hi "+firstName+" "+lastName+" "+s);
> }
>
> }
>
> -------------------------------------------------------------------------------------------------------------------
> ejb-jar.xml (in Student - ejb project)
>
> <?xml version="1.0" encoding="UTF-8"?>
> <ejb-jar version="3.0" 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/ejb-jar_3_0.xsd">
> </ejb-jar>
>
> -------------------------------------------------------------------------------------------------------------------
> sun-ejb-jar.xml (in Student - ejb project)
>
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE sun-ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Application Server 9.0 EJB 3.0//EN" "http://www.sun.com/software/appserver/dtds/sun-ejb-jar_3_0-0.dtd">
> <sun-ejb-jar>
> <enterprise-beans/>
> </sun-ejb-jar>
>
> -------------------------------------------------------------------------------------------------------------------
> CreateStudent.java (Servlet in STudentEE)
>
>
> package control;
>
> import java.io.IOException;
> import java.io.PrintWriter;
>
> import javax.ejb.EJB;
> import javax.servlet.ServletException;
> import javax.servlet.http.HttpServletRequest;
> import javax.servlet.http.HttpServletResponse;
>
> import com.session.StudentRemote;
>
> /**
> * Servlet implementation class for Servlet: CreateStudent
> *
> */
> public class CreateStudent extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
> static final long serialVersionUID = 1L;
> @EJB
> StudentRemote sr;
> /* (non-Java-doc)
> * @see javax.servlet.http.HttpServlet#HttpServlet()
> */
> public CreateStudent() {
> super();
> }
>
> /* (non-Java-doc)
> * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
> */
> protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
> // TODO Auto-generated method stub
> }
>
> /* (non-Java-doc)
> * @see javax.servlet.http.HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
> */
> protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
> // TODO Auto-generated method stub
> String firstName=request.getParameter("fname");
> String lastName=request.getParameter("lname");
> int stnd=new Integer(request.getParameter("stnd"));
>
> try {
> PrintWriter out=response.getWriter();
> response.setContentType("text/html");
>
> out.println("<html><body bgcolor="+"\""+"black"+"\""+">");
> out.println("<html><font color="+"\""+"white"+"\""+">");
>
> sr.populate(firstName, lastName, stnd);
> out.println("<h2><b> Successful </b></h2>");
> out.println("</font></body></html>");
> out.flush();
> }catch(IOException ioe) {
> ioe.printStackTrace();
> }
> }
> }
> -------------------------------------------------------------------------------------------------------------------
> index.jsp (in StudentEE)
>
> <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
> pageEncoding="ISO-8859-1"%>
> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
> <html>
> <head>
> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
> <title>Insert title here</title>
> </head>
> <body bgcolor="white">
> <font face="arial" color="green" >
>
> <form method="POST" action="CreateStudent">
> <p><b style="COLOR: #ff8040; FONT-SIZE: x-large;">Enter the details of the student</b></p>
> <table style="height: 100px; width: 459px; color: green" border="4" bordercolor="black">
> <tr>
> <td><b>Enter the first name of the student</b></td>
>
> <td><input type="text" name="fname" size="10" maxlength="10"></td>
> </tr>
> <tr>
> <td><b>Enter the last name of the student</b></td>
>
> <td><input type="text" name="lname" size="10" maxlength="10"></td>
> </tr>
> <tr>
> <td><b>Enter the standard</b></td>
>
> <td><input type="text" name="stnd" size="10" maxlength="10"></td>
> </tr>
> <tr>
> <td><input type="submit" value="Submit"></td>
> </tr>
> </table>
> </form>
>
> </font>
> </body>
> </html>
> -------------------------------------------------------------------------------------------------------------------
> sun-web.xml
>
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE sun-web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Application Server 9.0 Servlet 2.5//EN" "http://www.sun.com/software/appserver/dtds/sun-web-app_2_5-0.dtd">
> <sun-web-app error-url="">
> <context-root>/StudentEE</context-root>
> <class-loader delegate="true"/>
> <jsp-config>
> <property name="keepgenerated" value="true">
> <description>Keep a copy of the generated servlet class java code.</description>
> </property>
> </jsp-config>
> </sun-web-app>
>
> -------------------------------------------------------------------------------------------------------------------
> web.xml
>
> <?xml version="1.0" encoding="UTF-8"?>
> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
> <display-name>StudentEE</display-name>
> <welcome-file-list>
> <welcome-file>index.html</welcome-file>
> <welcome-file>index.htm</welcome-file>
> <welcome-file>index.jsp</welcome-file>
> <welcome-file>default.html</welcome-file>
> <welcome-file>default.htm</welcome-file>
> <welcome-file>default.jsp</welcome-file>
> </welcome-file-list>
> <servlet>
> <description></description>
> <display-name>CreateStudent</display-name>
> <servlet-name>CreateStudent</servlet-name>
> <servlet-class>control.CreateStudent</servlet-class>
> </servlet>
> <servlet-mapping>
> <servlet-name>CreateStudent</servlet-name>
> <url-pattern>/CreateStudent</url-pattern>
> </servlet-mapping>
> </web-app>
>
> -------------------------------------------------------------------------------------------------------------------
>
> Could any body please help me to resolve the problem?
>
> __________
> Thanks ,
> Rajeev
> [Message sent by forum member 'rajeev_tumkur' (rajeev_tumkur)]
>
> http://forums.java.net/jive/thread.jspa?messageID=303093
>
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>