Hi all,
I'm an italian university student.
Sorry for my english.
I have installed openejb 1.0 on my pc, and i copy the war loader in the
webapps directory of my tomcat 5.5 server.
I have modified the xml file in the war (openejb.home).
I have deployed myHelloEjb.jar (openejb deploy -c -f -a
C:/myHelloEjb.jar) (ID= Hello Container=1 (the only one).
I create a jsp, openejb.jsp, in webapps/examples, and i create the
WEB-INF/web.xml. I post the code of the openejb.jsp, and
the code of web.xml:
openejb.jsp:
<%@ page import="org.acme.HelloObject,
org.acme.HelloHome,
javax.naming.InitialContext,
javax.naming.Context,
java.util.*"%>
<html>
<head>
<title>OpenEJB -- EJB for Tomcat</title>
</head>
<body>
Stateless Session bean - HelloBean - says:
<%
Properties p = new Properties();
p.put("java.naming.factory.initial",
"org.openejb.client.LocalInitialContextFactory");
Context initCtx = new InitialContext();
Object object = initCtx.lookup("java:comp/env/ejb/hello");
//Object object = initCtx.lookup("Hello");
HelloHome helloHome = (HelloHome)
javax.rmi.PortableRemoteObject.narrow(object, HelloHome.class);
HelloObject bean = helloHome.create();
%>
<%= bean.sayHello() %>
</body>
</html>
web.xml:
<ejb-ref>
<description> EJB Reference to the bean deployed to OpenEJB
</description>
<ejb-ref-name>ejb/hello</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<home>org.acme.HelloHome</home>
<remote>org.acme.Hello</remote>
</ejb-ref>
I insert in %CATALINA_HOME%/conf/server.xml the code:
<Context path="/examples">
<Ejb name="ejb/hello" type="Session" home="org.acme.HelloHome"
remote="org.acme.Hello"/>
<ResourceParams name="ejb/hello">
<parameter>
<name>factory</name>
<value>org.openejb.client.TomcatEjbFactory</value>
</parameter>
<parameter>
<name>openejb.naming.factory.initial</name>
<value>org.openejb.client.LocalInitialContextFactory</value>
</parameter>
<parameter>
<name>openejb.ejb-link</name>
<value>Hello</value>
</parameter>
</ResourceParams>
</Context>
in the "Host" xml-node.
When i launch tomcat, and i go at
http://localhost:8080/examples/openejb.jsp i read the error report:
HTTP Status 500 -
------------------------------------------------------------------------
*type* Exception report
*message*
*description* _The server encountered an internal error () that
prevented it from fulfilling this request._
*exception*
org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:512)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:395)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
*root cause*
java.lang.NullPointerException
org.openejb.core.ivm.naming.IvmContext.lookup(IvmContext.java:152)
javax.naming.InitialContext.lookup(InitialContext.java:351)
org.apache.jsp.openejb_jsp._jspService(openejb_jsp.java:62)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
*note* _The full stack trace of the root cause is available in the
Apache Tomcat/5.5.20 logs._
------------------------------------------------------------------------
Apache Tomcat/5.5.20
If i modify openejb.jsp code in:
Properties p = new Properties();
p.put("java.naming.factory.initial",
"org.openejb.client.LocalInitialContextFactory");
Context initCtx = new InitialContext(p);
//Object object = initCtx.lookup("java:comp/env/ejb/hello");
Object object = initCtx.lookup("Hello");
HelloHome helloHome = (HelloHome)
javax.rmi.PortableRemoteObject.narrow(object, HelloHome.class);
HelloObject bean = helloHome.create();
I want to hide in the jsp the openejb factory.
Can you help me please?
I'm in a hurry, because this examples it's important for my graduation
thesis.
Thank you
