[JBoss-user] FileNotFoundException Accessing Session bean from Servlet
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-nameRegistration/display-name
ejb-nameRegistration/ejb-name
homecom.pc.ejb.session.interfaces.RegistrationHomeRemote/home
remotecom.pc.ejb.session.interfaces.RegistrationRemote/remote
ejb-classcom.pc.ejb.session.beans.RegistrationBean/ejb-class
session-typeStateful/session-type
Re: [JBoss-user] FileNotFoundException Accessing Session bean from Servlet
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.
Scott Stark
Chief Technology Officer
JBoss Group, LLC
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
