This happens when the stateful session has been removed due to
inactivity. The default timeout is 30 minutes. jboss-3.0.0 is now getting
to be a rather out of date version so lookup into updating to 3.0.4.

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Scott Stark
Chief Technology Officer
JBoss Group, LLC
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On Sunday, November 3, 2002, at 12:40 AM, John Snyder wrote:

Hello all,

 

Using jboss-3.0.0_tomcat-4.0.3, I am trying to access a Session bean called Registration from within a servlet, both of which are part of an application called pc, deployed as pc.ear. I can access the bean with no problem from a stand-alone client, with the following code:

 

Context jndiContext = getInitialContext();

Object ref = jndiContext.lookup("RegistrationHomeRemote");

RegistrationHomeRemote registrationHome = (RegistrationHomeRemote)

           PortableRemoteObject.narrow(ref,RegistrationHomeRemote.class);  

RegistrationRemote registration = registrationHome.create();                               

registration.remove();

 

When I placed this code in a TestServlet, however, I initially got a ClassCastException at the third line. Some research in the forums and the manual suggested to me that I did not have everything specified correctly in my deployment descriptors. After some tinkering, I no longer get a ClassCastException. However, I do get the following Exception:

 

javax.servlet.ServletException: Could not activate; nested exception is:

       java.io.FileNotFoundException: C:\Java\jboss\jboss-3.0.0_tomcat-4.0.3\server\default\db\sessions\Registration\1036311619820.ser (The system cannot find the file specified)

       at com.pc.servlets.TestServlet.doRequest(TestServlet.java:44)

       at com.pc.servlets.BaseServlet.doPost(BaseServlet.java:33)

       at com.pc.servlets.BaseServlet.doGet(BaseServlet.java:28)

       at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)

       at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)

       at org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:446)

       at org.apache.catalina.servlets.InvokerServlet.doGet(InvokerServlet.java:180)

       at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)

       at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)

       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)

       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)

       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)

       at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

       at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)

       at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)

       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)

       at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

       at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:475)

       at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

       at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)

       at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

       at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)

       at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)

       at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2343)

       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)

       at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

       at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)

       at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)

       at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

       at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)

       at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

       at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)

       at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)

       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)

       at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

       at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)

       at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)

       at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1012)

       at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1107)

       at java.lang.Thread.run(Thread.java:536)

 

Could anyone shed any light on what's happening here? My deployment descriptors (in relevant part) are as follows:

 

ejb.jar:

                      <session>

                                  <display-name>Registration</display-name>                        

                                  <ejb-name>Registration</ejb-name>                        

                                  <home>com.pc.ejb.session.interfaces.RegistrationHomeRemote</home>

                                  <remote>com.pc.ejb.session.interfaces.RegistrationRemote</remote>

                                  <ejb-class>com.pc.ejb.session.beans.RegistrationBean</ejb-class>

                                  <session-type>Stateful</session-type>

                                  <transaction-type>Container</transaction-type>                                                 

                      </session>

 

jboss.xml:

                      <session>

                                  <ejb-name>Registration</ejb-name>

                                  <jndi-name>RegistrationHomeRemote</jndi-name>

                      </session>

 

web.xml:

           <servlet>

                      <servlet-name>RegistrationServlet</servlet-name>

                      <servlet-class>com.pc.servlets.RegistrationServlet</servlet-class>

           </servlet>

           <ejb-ref>

                      <ejb-ref-name>Registration</ejb-ref-name>

                      <ejb-ref-type>Session</ejb-ref-type>

                      <home>RegistrationHomeRemote</home>

                      <remote>RegistrationRemote</remote>

                      <ejb-link>Registration</ejb-link>

           </ejb-ref>

 

jboss-web.xml:

           <ejb-ref>

                      <ejb-ref-name>Registration</ejb-ref-name>

                      <jndi-name>pc/RegistrationHomeRemote</jndi-name>

           </ejb-ref>

 

 




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