Having problems finding mqseries queues in java bean

[Alan Rushforth]

Hi,
I have written a java bean that puts a message onto an mqseries queue. I now want to be able to access this from a JSP. I have had a go but am having problems. I am using the file system context for the JNDI lookups and although they work when i use the bean in a java app it cannot find an initial context when accessed from a JSP.
I am fairly new to this so could someone give me a few pointers. Such as what needs to be done to make the bean accessible from a JSP. Does it need to be an EJB etc?
I have not deployed the bean as a web component or anything because i am not sure if i need to or why?
The code for my bean is as follows.

 
import javax.naming.NamingException;
import javax.naming.Context;
import javax.naming.InitialContext;
import java.util.Properties;
import javax.jms.Queue;
import javax.jms.QueueSession;
import javax.jms.QueueSender;
import javax.jms.QueueReceiver;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueConnection;
import javax.jms.JMSException;
import javax.jms.TextMessage;
import javax.jms.Message;
import javax.jms.Session;
public class JMSSenderBean 
{
//initial context factory
private static final String CTX_FACT = "com.sun.jndi.fscontext.RefFSContextFactory";
//Provider URL
private static final String PROV_URL = "file:C:\\jndi";
//JNDI name for the queue connection factory
private static final String QCF_NAME = "myQCF";
private String destination = null;
private String message = null;
public JMSSenderBean()
{

}
public void setDestination(String des)
{
destination = des;
}
public void setMessage(String msg)
{
message = msg;
}
public void writeMessage()
{
try
{
//properties for storing JNDI config info
Properties prop = new Properties();
//Add the initial context factory
prop.put(Context.INITIAL_CONTEXT_FACTORY, CTX_FACT);
//add the provider URL
prop.put(Context.PROVIDER_URL, PROV_URL);
//Create the initial context
Context ctx = new InitialContext(prop);
QueueConnectionFactory qcf = (QueueConnectionFactory) ctx.lookup(QCF_NAME);
QueueConnection qConn = qcf.createQueueConnection();
Queue queue = (Queue) ctx.lookup(destination);
QueueSession qSes = qConn.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
QueueSender sender = qSes.createSender(queue);
TextMessage msg = qSes.createTextMessage(message);
sender.send(msg);

}
catch(Exception e)
{
System.out.println(e.toString());
}
}
}

Thanks for any help.
Alan

[Simon Song]

What's your exception? And have you put MQ JMS jars in your appserver's classpath, so your JSP can find it?
http://www-106.ibm.com/developerworks/ibm/library/i-jms2/

[Alan Rushforth]

My exception is as follows:

javax.naming.NoInitialContextException: Cannot instantiate class: com.sun.jndi.fscontext.RefFSContextFactory [Root exception is java.lang.ClassNotFoundException: com.sun.jndi.fscontext.RefFSContextFactory]

The fscontext is on the classpath as is the provider jar. The bean worked fine when called from an app so i dont think it is a problem with the class path unless the class path is inaccessible when the bean is called from a JSP.
Cheers for the help,
Alan

[Alan Rushforth]

Hi Again,
I have solved that problem.
I had the files in the system classpath but not in tomcat classpath.
Have copied all jar files to lib directory of tomcat and t works now.
I do however have a new problem.
It now sends the message ok but the JSP will not disconnect from the queue until i close down tomcat.
I receive the message
"Unable to load message catalog - mqji"
I have seen on the net that it is possible to get a more detailed error message if i add the directory that mqji.properties is in to the tomcat classpath but i dont know how to do this.
Currently tomcat is loading the jar files itself but i dont know how to get it load the whole directory.
Any ideas?