6:17 a.m.
Hi
As i am new to EJB i have created a helloworld application in ejb which is working fine
when i try to call it from servlet but when i try to invoke the same ejb from java client
(i.e from diff jvm) on jboss i got the following error:
javax.naming.CommunicationException: Could not obtain connection to any of these urls:
localhost:1099 and discovery failed with error: javax.naming.CommunicationException:
Receive timed out [Root exception is java.net.SocketTimeoutException: Receive timed out]
[Root exception is javax.naming.CommunicationException: Failed to connect to server
localhost:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to
connect to server localhost:1099 [Root exception is java.net.ConnectException: Connection
refused]]]
at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1399)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:579)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:572)
at javax.naming.InitialContext.lookup(InitialContext.java:351)
at com.gl.TestClient.main(TestClient.java:39)
Caused by: javax.naming.CommunicationException: Failed to connect to server localhost:1099
[Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server
localhost:1099 [Root exception is java.net.ConnectException: Connection refused]]
at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:254)
at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1370)
... 4 more
Caused by: javax.naming.ServiceUnavailableException: Failed to connect to server
localhost:1099 [Root exception is java.net.ConnectException: Connection refused]
at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:228)
... 5 more
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:519)
at java.net.Socket.connect(Socket.java:469)
at java.net.Socket.(Socket.java:366)
at java.net.Socket.(Socket.java:266)
at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:69)
at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:62)
at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:224)
... 5 more
Following is my code:
Home Interface:
package com.gl;
import javax.ejb.CreateException;
public interface testHome extends EJBHome {
String JNDI_NAME = "testBean";
public test create()
throws java.rmi.RemoteException,CreateException;
}
Remote Interface:
package com.gl;
import java.rmi.RemoteException;
import javax.ejb.EJBObject;
public interface test extends EJBObject {
public String welcomeMessage() throws RemoteException;
}
Bean:
package com.gl;
import java.rmi.RemoteException;
import javax.ejb.EJBException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
public class testbean implements SessionBean {
public void ejbActivate() throws EJBException, RemoteException {
// TODO Auto-generated method stub
}
public void ejbPassivate() throws EJBException, RemoteException {
// TODO Auto-generated method stub
}
public void ejbRemove() throws EJBException, RemoteException {
// TODO Auto-generated method stub
}
public void setSessionContext(SessionContext arg0) throws EJBException,
RemoteException {
// TODO Auto-generated method stub
}
public void ejbCreate(){}
public String welcomeMessage(){
return "Welcome to the World of EJB";
}
}
ejb-jar.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans
2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar>
<enterprise-beans>
<ejb-name>testBean</ejb-name>
com.gl.testHome
com.gl.test
<ejb-class>com.gl.testbean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
</enterprise-beans>
</ejb-jar>
jboss.xml:
<?xml version='1.0' ?>
<!DOCTYPE jboss PUBLIC "-//JBoss//DTD JBOSS 3.2//EN"
"http://www.jboss.org/j2ee/dtd/jboss_3_2.dtd">
<enterprise-beans>
<ejb-name>testBean</ejb-name>
<jndi-name>testBean</jndi-name>
</enterprise-beans>
Client code:
package com.gl;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
public class TestClient {
public static void main(String[] args) throws Exception{
try{
/* Properties props=new Properties();
props.put(Context.INITIAL_CONTEXT_FACTORY,
"org.jnp.interfaces.NamingContextFactory");
props.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces");
props.put(Context.PROVIDER_URL, "jnp://localhost:1099");
*/
Properties props = new Properties();
props.put(Context.INITIAL_CONTEXT_FACTORY,
"org.jnp.interfaces.NamingContextFactory");
props.put(Context.PROVIDER_URL, "localhost:1099");
System.out.println("Properties ok");
//env.setProperty(Context.INITIAL_CONTEXT_FACTORY,"org.jboss.naming.HttpNamingContextFactory");
//env.put(Context.PROVIDER_URL,"http://localhost:8080");
//env.put(Context.SECURITY_PRINCIPAL, "");
//env.put(Context.SECURITY_CREDENTIALS, "");
Context ctx=new InitialContext(props);
System.out.println("context ok");
//testHome home = (testHome)ctx.lookup("testBean");
Object obj = ctx.lookup ("testBean");
System.out.println("ojb = " + obj);
testHome ejbHome = (testHome)PortableRemoteObject.narrow(obj,testHome.class);
test ejbObject = ejbHome.create();
String message = ejbObject.welcomeMessage();
System.out.println("home ok");
System.out.println("remote ok");
System.out.println(message);
}
catch(Exception e){e.printStackTrace();}
}
}
I am able to successfully deployed my ejb on JBOSS but i m getting above error when i am
trying to invoke ejb from java client.
kindly suggest me something to solve this issue.
Regards
Gagan
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