7 Replies Latest reply on May 26, 2008 2:09 AM by jaikiran

    Problem by jndi-lookup from Tomcat to JBoss

    thomas2008ch
    thomas2008ch May 25, 2008 6:47 AM

      Hi all,

      I use the XDoclet to build EJB2-porject. The EJB2-project is deployed in JBoss 4.2.2. GA.

      I can access/connect to the bean from an jsp (index.jsp) in a war:

      ...
<body>
<%
 com.zoo.Tiger tiger = null;
 try{
 com.zoo.TigerHome home = com.zoo.TigerUtil.getHome();
 tiger = home.create();

 }catch(Exception exception)
 {

 }
%>
<b><%= tiger.roar() %></b>
</body>
...


      The war is included within an ear deployed on JBoss.

      I can even access/connect the bean on the server with a standalone java: 

      public class TestClient {

 public static void main(String[] args) {
 Tiger tiger = null;
 try {
 TigerHome home = TigerUtil.getHome();
 tiger = home.create();
 System.out.println(tiger.roar());

 } catch (Exception exception) {
 exception.printStackTrace();
 }
 }
}


      With a jndi.properties: 

      java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces
java.naming.provider.url=localhost:1099


      Now I deploy the web/war on Tomcat 6 and try to access/connect to the bean on JBoss. But it failed. My "index.jsp" looks as follow: 

      <body>
<%
 Properties props = new Properties();
 props.put(Context.INITIAL_CONTEXT_FACTORY,"org.jnp.interfaces.NamingContextFactory");
 props.put(Context.PROVIDER_URL, "jnp://localhost:1099");

 com.zoo.Tiger tiger = null;
 try{
 com.zoo.TigerHome home = com.zoo.TigerUtil.getHome();
 tiger = home.create();

 }catch(Exception exception)
 {

 }
%>
<b><%= tiger.roar() %></b>
</body>


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        • 1. Re: Problem by jndi-lookup from Tomcat to JBoss
          jaikiran
          jaikiran May 25, 2008 8:50 AM (in response to thomas2008ch)

           

          But it failed.

          Failed = What exactly happened? Do you see any exception? Also, you would want to do a better job with the exception handling:


          try{
          com.zoo.TigerHome home = com.zoo.TigerUtil.getHome();
          tiger = home.create();

          }catch(Exception exception)
          {

          }



          Atleast, print out the stacktrace 

          try{
 com.zoo.TigerHome home = com.zoo.TigerUtil.getHome();
 tiger = home.create();

 }catch(Exception exception)
 {
 exception.printStackTrace();
 }


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          • 2. Re: Problem by jndi-lookup from Tomcat to JBoss
            thomas2008ch
            thomas2008ch May 25, 2008 10:27 AM (in response to thomas2008ch)

            Surely you are right.

            Here is the exceptions I got in the browser:

            exception

org.apache.jasper.JasperException: An exception occurred processing JSP page /index.jsp at line 29

26: exception.printStackTrace();
27: }
28: %>
29: <b><%= tiger.roar() %></b>
30:
31:
32: </body>


Stacktrace:
 org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:524)
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:435)
 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
 org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:803)


root cause

java.lang.NullPointerException
 org.apache.jsp.index_jsp._jspService(index_jsp.java:87)
 org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
 org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:803)




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            • 3. Re: Problem by jndi-lookup from Tomcat to JBoss
              thomas2008ch
              thomas2008ch May 25, 2008 10:31 AM (in response to thomas2008ch)

              In the log file I got the full stack trace:

              SCHWERWIEGEND: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
 at org.apache.jsp.index_jsp._jspService(index_jsp.java:87)
 at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
 at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
 at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
 at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
 at java.lang.Thread.run(Thread.java:595)


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              • 4. Re: Problem by jndi-lookup from Tomcat to JBoss
                thomas2008ch
                thomas2008ch May 25, 2008 10:34 AM (in response to thomas2008ch)

                In the console I got followings. Seems it has problem with the jndi-lookup.

                INFO: Deploying web application archive TestXDocletWeb.war
javax.naming.NameNotFoundException: Name Tiger is not bound in this Context
 at org.apache.naming.NamingContext.lookup(NamingContext.java:770)
 at org.apache.naming.NamingContext.lookup(NamingContext.java:153)
 at org.apache.naming.SelectorContext.lookup(SelectorContext.java:137)
 at javax.naming.InitialContext.lookup(InitialContext.java:351)
 at com.zoo.TigerUtil.lookupHome(TigerUtil.java:22)
 at com.zoo.TigerUtil.getHome(TigerUtil.java:42)
 at org.apache.jsp.index_jsp._jspService(index_jsp.java:77)
 at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
 at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper
.java:393)
 at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:3
20)
 at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:233)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:175)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:128)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:102)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
a:263)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:844)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
ss(Http11Protocol.java:584)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:44
7)
 at java.lang.Thread.run(Thread.java:595)


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                • 5. Re: Problem by jndi-lookup from Tomcat to JBoss
                  thomas2008ch
                  thomas2008ch May 25, 2008 10:39 AM (in response to thomas2008ch)

                  In the Global JNDI Namespace I see followings:

                  Global JNDI Namespace
...
+- Tiger (proxy: $Proxy69 implements interface com.zoo.TigerHome,interface javax.ejb.Handle)
...
...
 +- local (class: org.jnp.interfaces.NamingContext)
 | +- Tiger@33422146 (proxy: $Proxy67 implements interface com.zoo.TigerLocalHome)
...
...


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                  • 6. Re: Problem by jndi-lookup from Tomcat to JBoss
                    thomas2008ch
                    thomas2008ch May 25, 2008 10:51 AM (in response to thomas2008ch)

                    Ok, I solved the problem. I make the same error again as last time. :-)

                    I have to use the environment by JNDI-lookup as follow:

                    ...
                    com.zoo.TigerHome home = com.zoo.TigerUtil.getHome(props);
                    ...

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                    • 7. Re: Problem by jndi-lookup from Tomcat to JBoss
                      jaikiran
                      jaikiran May 26, 2008 2:09 AM (in response to thomas2008ch)

                       

                      "thomas2008ch" wrote:
                      Ok, I solved the problem. I make the same error again as last time. :-)



                      :)

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