FileNotFoundException Accessing Session bean from Servlet
jrssnyder Nov 3, 2002 4:24 AMHello 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:
<display-name>Registration</display-name>
<ejb-name>Registration</ejb-name>
com.pc.ejb.session.interfaces.RegistrationHomeRemote
com.pc.ejb.session.interfaces.RegistrationRemote
<ejb-class>com.pc.ejb.session.beans.RegistrationBean</ejb-class>
<session-type>Stateful</session-type>
<transaction-type>Container</transaction-type>
jboss.xml:
<ejb-name>Registration</ejb-name>
<jndi-name>RegistrationHomeRemote</jndi-name>
web.xml:
<servlet-name>RegistrationServlet</servlet-name>
<servlet-class>com.pc.servlets.RegistrationServlet</servlet-class>
<ejb-ref>
<ejb-ref-name>Registration</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
RegistrationHomeRemote
RegistrationRemote
<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>