Websphere MQ unable to create initial JNDI context

Question

I am trying to run a demo class (JMSJNDIProducer.java) that comes with Websphere MQ 7.0 installation at 'websphere installation location'\tools\jms\samples. I have Websphere up and running, below are my websphere configurations...

Queue Manager Name: JMSDEMO
Queue Manager Port: 1414
Channel (default): SYSTEM.DEF.CLNTCONN
Queue Name: JMSDEMO.QL
let me know if more info needed...

My code is failing during the initial context creation, I'm very new to Websphere MQ and not sure what the initialContextUrl needs to be?

public class JMS_JNDI_Websphere_Sample {

private static String initialContextUrl = "tcp://localhost:1414";

public static void main(String args[]) {

    // Instantiate the initial context
    String contextFactory = "com.sun.jndi.fscontext.RefFSContextFactory";
    Hashtable<String, Object> environment = new Hashtable<String, Object>();
    environment.put(Context.INITIAL_CONTEXT_FACTORY, contextFactory);
    environment.put(Context.PROVIDER_URL, initialContextUrl);
    try {
        Context context = new InitialDirContext(environment);
    } catch (NamingException e) {
        e.printStackTrace();
    }
    System.out.println("Initial context found!");

}
}

I am getting the below exception.

    javax.naming.InvalidNameException: tcp://localhost:1414 [Root exception is java.net.MalformedURLException: unknown protocol: tcp]
    at com.sun.jndi.fscontext.FSContextFactory.getFileNameFromURLString(FSContextFactory.java:119)
    at com.sun.jndi.fscontext.RefFSContextFactory.createContext(RefFSContextFactory.java:41)
    at com.sun.jndi.fscontext.RefFSContextFactory.createContextAux(RefFSContextFactory.java:47)
    at com.sun.jndi.fscontext.FSContextFactory.getInitialContext(FSContextFactory.java:49)
    at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667)
    at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288)
    at javax.naming.InitialContext.init(InitialContext.java:223)
    at javax.naming.InitialContext.<init>(InitialContext.java:197)
    at javax.naming.directory.InitialDirContext.<init>(InitialDirContext.java:82)
    at com.hcsc.jms.websphere.jndi.JMS_JNDI_Websphere_Sample.main(JMS_JNDI_Websphere_Sample.java:32)
Caused by: java.net.MalformedURLException: unknown protocol: tcp
    at java.net.URL.<init>(URL.java:574)
    at java.net.URL.<init>(URL.java:464)
    at java.net.URL.<init>(URL.java:413)
    at com.sun.jndi.fscontext.FSContextFactory.getFileNameFromURLString(FSContextFactory.java:117)
    ... 9 more

Roger Roger · Accepted Answer · 2015-02-19T23:10:56

private static String initialContextUrl = "tcp://localhost:1414";

First off, I don't think "tcp" is a valid value and if it is, do you have something running on port 1414 to reply JNDI lookup requests?

Secondly, I think you are confusing MQ port 1414 with JNDI lookup.

Third, why don't you just follow the example in JmsJndiProducer.java and use a file-based JNDI.

i.e. Use MQ Explorer and select "JMS Administered Objects" then do file-based JNDI.

Once you create your file-based JNDI then that value for your initial context.

Websphere MQ unable to create initial JNDI context

2 Answers