how call EJB from servlet ?

[andang]

I tried call EJBean in JBoss from servlet in other machine. but failed.

is possable call ejbean from servlet on other machine.

i use Interest example from jboss site.
servlet code some like this.



Properties env = new Properties();
env.setProperty(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
env.setProperty(Context.URL_PKG_PREFIXES, "org.jnp.interfaces");
env.setProperty(Context.PROVIDER_URL, "openmind.ncq.co.kr:1099");

Object ref = new InitialContext(env).lookup("jnp://openmind.ncq.co.kr:1099/interest/Interest");

out.println( ref.getClass().getName() ) ;


output was $Proxy. but i excepted InterestHome.

[georges]

Hi1

Type http://localhost:8082 in your browser.
You can see the name under Jndi.
The example dont't worked until I changed to
lookup("interest/Interest")

[hbdennischen]

> Hi1
>
> Type http://localhost:8082 in your browser.
> You can see the name under Jndi.
> The example dont't worked until I changed to
> lookup("interest/Interest")

how call EJB in JBOSS-2.4.1 from servlet in tomcat-4.0 ?
1) I deploy a session ejb named "Login" in jboss, and I can found it when I type http://localhost:8082 in my browser.

2) I copy jboss-client.jar, jboss-j2ee.jar, jnp-client.jar and my ejb jar file to tomcat-home/webapps/myapp/WEB-INF/lib.

3) I write following lines in deployment descriptor file web.xml:
<ejb-ref>
This is demo ejb
<ejb-ref-name>Login</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
com.netup.demo.ejb.session.loginsrv.LoginHome
com.netup.demo.ejb.session.loginsrv.LoginRemote
</ejb-ref>

4) In my servlet class, I call ejb like this:

Properties env = new Properties();
env.setProperty(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
env.setProperty(Context.URL_PKG_PREFIXES, "org.jnp.interfaces");
env.setProperty(Context.PROVIDER_URL, "localhost:1099");

try {
Object ref = new InitialContext(env).lookup("Login");
LoginHome home = (LoginHome) PortableRemoteObject.narrow(ref, LoginHome.class);
out.println( "LoginHome is found: " + home.getClass().getName() ) ;
LoginRemote bean = home.create();
if (bean.checkUser(userId, pw))
{
out.println( "The user is valid" ) ;
}
else
{
out.println( "The user is invalid, the valid user is admin, password is dennis" ) ;
}
} catch (Exception e){
out.println( "The EJB not FOUND: " + e.getMessage()) ;
}

5) When I request from servlet, my browser show following error message:

LoginHome is found: $Proxy0


A Servlet Exception Has Occurred
Exception Report:
javax.servlet.ServletException: Servlet execution threw an exception
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
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:215)
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.StandardContext.invoke(StandardContext.java:2366)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:462)
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:163)
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:1005)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1098)
at java.lang.Thread.run(Thread.java:484)

Root Cause:
java.lang.NoClassDefFoundError: org/jboss/security/SecurityAssociation
at org.jboss.ejb.plugins.jrmp.interfaces.GenericProxy.getPrincipal(GenericProxy.java:231)
at org.jboss.ejb.plugins.jrmp.interfaces.GenericProxy.createMarshalledObject(GenericProxy.java:393)
at org.jboss.ejb.plugins.jrmp.interfaces.HomeProxy.invokeHome(HomeProxy.java:244)
at org.jboss.ejb.plugins.jrmp.interfaces.HomeProxy.invoke(HomeProxy.java:182)
at $Proxy0.create(Unknown Source)
at com.netup.q2w.eaf.servlet.Login.doPost(Login.java:99)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:1145)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:1264)
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:215)
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.StandardContext.invoke(StandardContext.java:2366)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:462)
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:163)
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:1005)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1098)
at java.lang.Thread.run(Thread.java:484)

6) anybody can tell me why goes to error even the home object is found?

[tewky2]

java.lang.NoClassDefFoundError: org/jboss/security/SecurityAssociation

need to put JBOSS_ROOT/client/jbosssx-client.jar in your WEB-INF/lib dir