Statefull bean Reference in a JSP

Weblogic Server 4.5.1
          I have got the reference to a statefull session bean in a JSP, how can i use
          the same reference of session bean in another JSP file. How is this
          achieved.
          Here is an example of the problem
          In a JSP file i display all the information regarding the user using the
          statefull session bean, since this bean maintains the session of the user i
          want to call another method in another jsp using the same statefull sessio
          bean object, which i created in first Jsp. How is this possible
          Thanks in Advance
          Update me. Keep in touch.
          With Warm Regards
          Pavan Kumar
          BenchMark Softech Limited
          150 Luz Church Road
          Mylapore
          Chennai - 4, TN-INDIA
          PH-4987589,90,91,92,93,4971094
          http://www.benchmarkindia.com

Put the EJB handle in HttpSession.
          Cheers - Wei
          Pavan <[email protected]> wrote in message
          news:[email protected]..
          > Weblogic Server 4.5.1
          > I have got the reference to a statefull session bean in a JSP, how can i
          use
          > the same reference of session bean in another JSP file. How is this
          > achieved.
          > Here is an example of the problem
          >
          > In a JSP file i display all the information regarding the user using the
          > statefull session bean, since this bean maintains the session of the user
          i
          > want to call another method in another jsp using the same statefull sessio
          > bean object, which i created in first Jsp. How is this possible
          >
          >
          > Thanks in Advance
          >
          > --
          > -----------------------------------------------------------------
          > Update me. Keep in touch.
          > With Warm Regards
          > Pavan Kumar
          >
          > BenchMark Softech Limited
          > 150 Luz Church Road
          > Mylapore
          > Chennai - 4, TN-INDIA
          > PH-4987589,90,91,92,93,4971094
          > http://www.benchmarkindia.com
          >
          >

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I am not clear with ur query..
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That helps.
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********** Message End *************Thanks

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how?.... mmmm ... did ... (head scratch) ...I miss that.
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OK, maybe I'm oversharing, but I want to be thorough. Note I asked this question a different way using very different code.
Here's my jsp file - myq.jsp
<%@ page language="java" import="java.util.*,com.serco.inquire.*" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="inq" tagdir="/WEB-INF/tags" %>
<inq:displayCollection>
<jsp:attribute name="mgr">Chris Novish</jsp:attribute>
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<%@ tag body-content="scriptless" import="com.serco.inquire.*" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ attribute name="mgr" required="true" %>
<jsp:useBean id="irc" scope="session" class="com.serco.inquire.IrCollection">
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package com.serco.inquire;
import java.sql.*;
import java.util.*;
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}and here's the InquireRecord java class used by IrCollection:
package com.serco.inquire;
public class InquireRecord {
     private int ID;
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     public InquireRecord() {
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I think this could be one of the following:
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*Not actually executing the populateCollection() method
*some how forgetting the information it put into that ArrayList?
I"m sure there's another possibility, but I don't know.
Here's what gets me. Here's a test class I made called TestCollection:
{code}package com.serco.inquire;
import java.util.*;
import java.text.*;
public class TestCollection {
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if I run that I get a size of 4 and a mgrid of Chris Novish.
Same data in, and it works as expected.
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ram.

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<jsp:useBeanid="newmember" class = "com.assignment.member" scope ="request"/>
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<jsp:useBeanid="newmember3" class = "com.assignment.membe3r" scope ="request"/>
upto N bean

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Please help!
1. I invoke a Session Bean from a servlet :
travelagent = home.create();
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session.setAttribute( "travelagent" , travelagent );------------------------------------------------------------------------------------------------------------------
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The Values you will see below in the code:
EJB Remote Interface : TravelAgent (TravelAgent.java)
Business Method : listItineraries( )
Servlet which calls the above method : ListItinerary.java
Line 46 of ListItinerary.java : ArrayList itineraries = traveler.listItineraries();------------------------------------------------------------------------------------------------------------------
The two ways along with the error I get on the servlet page in the browser are :
(A)
TravelAgent traveler = (TravelAgent)session.getAttribute("travelagent");The error I get is :
java.rmi.NoSuchObjectException: CORBA OBJECT_NOT_EXIST 9998 Maybe; nested exception is:
     org.omg.CORBA.OBJECT_NOT_EXIST: vmcid: 0x2000 minor code: 1806 completed: Maybe
com.sun.corba.ee.impl.javax.rmi.CORBA.Util.mapSystemException(Util.java:208)
     com.sun.corba.ee.impl.javax.rmi.CORBA.Util.wrapException(Util.java:591)
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(B)
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java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
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Thanks guys! It worked.
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Please help me open my eyes!
I know this is a stupid oversight on my part, but I've been working for days on getting other things to work on my tomcat server, so I'm out of ideas on this one.
I've followed all the tomcat docs instructions on where to put my jsp and bean files and set my classpath to where my beans are located. jsps work fine for me but when I try to run this jsp that uses my CalcBean, I get this and similar internal server errors:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 1 in the jsp file: /jsp/calc/calculate.jsp
Generated servlet error:
C:\jakarta-tomcat-4.0\work\Standalone\localhost\research\jsp\calc\calculate$jsp.java:56: Class org.apache.jsp.CalcBean not found.
CalcBean calc = null;
^
Do I need to register my bean somewhere like web.xml?
Thanks so much in advance for any help!!

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Message Driven Bean Reference Problem

Hi,
I have problems a MDB referencing other beans, I am getting Class Cast
exception whenever my MDB tries to use narrow operation after the lookup
is done.
The Code is as follows:
public void ejbCreate () throws CreateException {
log("ejbCreate called");
try {
InitialContext ctx = new InitialContext();
Object ref = ctx.lookup("java:comp/env/ejb/LoggerCache");
log("Lookup of Cache done");
LoggerCacheHome loggerCacheHome = (LoggerCacheHome)
PortableRemoteObject.narrow(ref, LoggerCacheHome.class);
} catch(Exception ex) {
ex.printStackTrace();
The lookup is successful but when I try to use the narrow..... I get the
following exception stackk Trace.
Any help will be appreciated.
TIA,
Vikas
Stack Trace
java.lang.ClassCastException
at
weblogic.iiop.PortableRemoteObjectDelegateImpl.narrow(PortableRemoteO
bjectDelegateImpl.java:90)
at
javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:137)
at
examples.ejb20.message.MessageTraderBean.ejbCreate(MessageTraderBean.
java:90)
at java.lang.reflect.Method.invoke(Native Method)
at
weblogic.ejb20.internal.MessageDrivenEJBHome.createBean(MessageDriven
EJBHome.java:290)
at
weblogic.ejb20.pool.MessageDrivenPool.createBean(MessageDrivenPool.ja
va:98)
at weblogic.ejb20.pool.Pool.createInitialBeans(Pool.java:100)
at weblogic.ejb20.pool.Pool.<init>(Pool.java:74)
at weblogic.ejb20.pool.EntityPool.<init>(EntityPool.java:34)
at
weblogic.ejb20.pool.MessageDrivenPool.<init>(MessageDrivenPool.java:4
3)
at
weblogic.ejb20.deployer.MessageDrivenBeanInfoImpl.getPool(MessageDriv
enBeanInfoImpl.java:336)
at
weblogic.ejb20.deployer.MessageDrivenBeanInfoImpl.deploy(MessageDrive
nBeanInfoImpl.java:403)
at
weblogic.ejb20.deployer.Deployer.deployDescriptor(Deployer.java:1105)
at weblogic.ejb20.deployer.Deployer.deploy(Deployer.java:908)
at weblogic.j2ee.EJBComponent.deploy(EJBComponent.java:31)
at weblogic.j2ee.Application.deploy(Application.java:167)
at
weblogic.j2ee.J2EEService.deployApplication(J2EEService.java:173)
at
weblogic.management.mbeans.custom.Application.setLocalDeployed(Applic
ation.java:217)
at
weblogic.management.mbeans.custom.Application.setDeployed(Application
.java:187)
at java.lang.reflect.Method.invoke(Native Method)
at
weblogic.management.internal.DynamicMBeanImpl.invokeSetter(DynamicMBe
anImpl.java:1136)
at
weblogic.management.internal.DynamicMBeanImpl.setAttribute(DynamicMBe
anImpl.java:773)
at
weblogic.management.internal.DynamicMBeanImpl.setAttribute(DynamicMBe
anImpl.java:750)
at
weblogic.management.internal.ConfigurationMBeanImpl.setAttribute(Conf
igurationMBeanImpl.java:256)
at
com.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.j
ava:1356)
at
com.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.j
ava:1331)
at
weblogic.management.internal.ConfigurationMBeanImpl.updateConfigMBean
s(ConfigurationMBeanImpl.java:318)
at
weblogic.management.internal.ConfigurationMBeanImpl.setAttribute(Conf
igurationMBeanImpl.java:259)
at
com.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.j
ava:1356)
at
com.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.j
ava:1331)
at
weblogic.management.internal.MBeanProxy.setAttribute(MBeanProxy.java:
291)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:173)
at $Proxy91.setDeployed(Unknown Source)
at
weblogic.management.mbeans.custom.ApplicationManager.autoDeploy(Appli
cationManager.java:494)
at
weblogic.management.mbeans.custom.ApplicationManager.poll(Application
Manager.java:465)
at
weblogic.management.mbeans.custom.ApplicationManager.poll(Application
Manager.java:380)
at
weblogic.management.mbeans.custom.ApplicationManager.update(Applicati
onManager.java:152)
at java.lang.reflect.Method.invoke(Native Method)
at
weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:562)
at
weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
.java:548)
at
weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:285)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
55)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
23)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:437)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:178)
at $Proxy2.update(Unknown Source)
at
weblogic.management.console.pages._domain._upload_app._jspService(_up
load_app.java:172)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:213)
at
weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:1265)
at
weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:1622)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)

Print the class info for the castee and the cast-to classes. They are
incompatible, and hence the exception. It could be a bug in your code, or
it could be a classloader issue (resulting from how you
packaged/deployed/how your app works) or something like that.
Peace,
Cameron Purdy
Tangosol, Inc.
http://www.tangosol.com
+1.617.623.5782
WebLogic Consulting Available
"Vikas" <[email protected]> wrote in message
news:[email protected]...
Hi,
I have problems a MDB referencing other beans, I am getting Class Cast
exception whenever my MDB tries to use narrow operation after the lookup
is done.
The Code is as follows:
public void ejbCreate () throws CreateException {
log("ejbCreate called");
try {
InitialContext ctx = new InitialContext();
Object ref = ctx.lookup("java:comp/env/ejb/LoggerCache");
log("Lookup of Cache done");
LoggerCacheHome loggerCacheHome = (LoggerCacheHome)
PortableRemoteObject.narrow(ref, LoggerCacheHome.class);
} catch(Exception ex) {
ex.printStackTrace();
The lookup is successful but when I try to use the narrow..... I get the
following exception stackk Trace.
Any help will be appreciated.
TIA,
Vikas
Stack Trace
java.lang.ClassCastException
at
weblogic.iiop.PortableRemoteObjectDelegateImpl.narrow(PortableRemoteO
bjectDelegateImpl.java:90)
at
javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:137)
at
examples.ejb20.message.MessageTraderBean.ejbCreate(MessageTraderBean.
java:90)
at java.lang.reflect.Method.invoke(Native Method)
at
weblogic.ejb20.internal.MessageDrivenEJBHome.createBean(MessageDriven
EJBHome.java:290)
at
weblogic.ejb20.pool.MessageDrivenPool.createBean(MessageDrivenPool.ja
va:98)
at weblogic.ejb20.pool.Pool.createInitialBeans(Pool.java:100)
at weblogic.ejb20.pool.Pool.<init>(Pool.java:74)
at weblogic.ejb20.pool.EntityPool.<init>(EntityPool.java:34)
at
weblogic.ejb20.pool.MessageDrivenPool.<init>(MessageDrivenPool.java:4
3)
at
weblogic.ejb20.deployer.MessageDrivenBeanInfoImpl.getPool(MessageDriv
enBeanInfoImpl.java:336)
at
weblogic.ejb20.deployer.MessageDrivenBeanInfoImpl.deploy(MessageDrive
nBeanInfoImpl.java:403)
at
weblogic.ejb20.deployer.Deployer.deployDescriptor(Deployer.java:1105)
at weblogic.ejb20.deployer.Deployer.deploy(Deployer.java:908)
at weblogic.j2ee.EJBComponent.deploy(EJBComponent.java:31)
at weblogic.j2ee.Application.deploy(Application.java:167)
at
weblogic.j2ee.J2EEService.deployApplication(J2EEService.java:173)
at
weblogic.management.mbeans.custom.Application.setLocalDeployed(Applic
ation.java:217)
at
weblogic.management.mbeans.custom.Application.setDeployed(Application
.java:187)
at java.lang.reflect.Method.invoke(Native Method)
at
weblogic.management.internal.DynamicMBeanImpl.invokeSetter(DynamicMBe
anImpl.java:1136)
at
weblogic.management.internal.DynamicMBeanImpl.setAttribute(DynamicMBe
anImpl.java:773)
at
weblogic.management.internal.DynamicMBeanImpl.setAttribute(DynamicMBe
anImpl.java:750)
at
weblogic.management.internal.ConfigurationMBeanImpl.setAttribute(Conf
igurationMBeanImpl.java:256)
at
com.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.j
ava:1356)
at
com.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.j
ava:1331)
at
weblogic.management.internal.ConfigurationMBeanImpl.updateConfigMBean
s(ConfigurationMBeanImpl.java:318)
at
weblogic.management.internal.ConfigurationMBeanImpl.setAttribute(Conf
igurationMBeanImpl.java:259)
at
com.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.j
ava:1356)
at
com.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.j
ava:1331)
at
weblogic.management.internal.MBeanProxy.setAttribute(MBeanProxy.java:
291)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:173)
at $Proxy91.setDeployed(Unknown Source)
at
weblogic.management.mbeans.custom.ApplicationManager.autoDeploy(Appli
cationManager.java:494)
at
weblogic.management.mbeans.custom.ApplicationManager.poll(Application
Manager.java:465)
at
weblogic.management.mbeans.custom.ApplicationManager.poll(Application
Manager.java:380)
at
weblogic.management.mbeans.custom.ApplicationManager.update(Applicati
onManager.java:152)
at java.lang.reflect.Method.invoke(Native Method)
at
weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:562)
at
weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
.java:548)
at
weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:285)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
55)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
23)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:437)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:178)
at $Proxy2.update(Unknown Source)
at
weblogic.management.console.pages._domain._upload_app._jspService(_up
load_app.java:172)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:213)
at
weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:1265)
at
weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:1622)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)

Statefull bean Reference in a JSP

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