Create a JAVA client calling a proxy...

Question

Hi,
I succeed creating a servlet that calls a web service via a "deployable proxy".
Is it possible to create a java class (not a servlet or jsp) that connect to this proxy ?
Here is a sample of my client class:
               InitialContext ic = new InitialContext();
               Z_RFC_WS_TESTService sampleWS =
                    (Z_RFC_WS_TESTService) ic.lookup("java:comp/env/SampleWSProxy");
The WEB server is not local....how do I insert the url and how do I get the name of the Context.INITIAL_CONTEXT_FACTORY ?
Thanks a lot.

Answer 1

Hi David,
first, once again, I'm not familiar with this proxy stuff. So about this I cannot say anything in detail.
All I recognized was that it seems that you try to access your J2EE servers JNDI context from outside, right? This is done by the now following solution, which shows you the whole context-tree of the J2EE's server JNDI root context:
package com.btexx.jndi.remote.test;
import java.util.Arrays;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NameClassPair;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
public class Accessor {
  public static void main(String[] args) {
    Properties props = new Properties();
    props.put(Context.INITIAL_CONTEXT_FACTORY, "com.sap.engine.services.jndi.InitialContextFactoryImpl");       
    props.put(Context.SECURITY_PRINCIPAL, "Administrator");
    props.put(Context.SECURITY_CREDENTIALS, "BTXadm");
    props.put(Context.PROVIDER_URL, "prag:50004");
    try {
      InitialContext ctx = new InitialContext(props);
      showInnerContent(ctx, 0);
    } catch (NamingException e) {
      e.printStackTrace();
  private static void showInnerContent(Context ctx, int indent) throws NamingException {
    NamingEnumeration enum = ctx.list("");
    while (enum.hasMore()) {
      NameClassPair pair = (NameClassPair) enum.next();
      char[] spcs = new char[indent];
      Arrays.fill(spcs, ' ');
      System.out.println(new String(spcs) + pair.getName());
      try {
        Context innerCtx = (Context) ctx.lookup(pair.getName());
        showInnerContent(innerCtx, indent+2);
      } catch (Exception e) {
For this, you need the following JARs from the server (maybe there exists a client package with all together):
<classpathentry kind="lib" path="frame.jar"/>
<classpathentry kind="lib" path="naming.jar"/>
<classpathentry kind="lib" path="util.jar"/>
<classpathentry kind="lib" path="exception.jar"/>
<classpathentry kind="lib" path="boot.jar"/>
<classpathentry kind="lib" path="iq-lib.jar"/>
<classpathentry kind="lib" path="p4.jar"/>
<classpathentry kind="lib" path="log_api.jar"/>
<classpathentry kind="lib" path="cross_api.jar"/>
<classpathentry kind="lib" path="appclient.jar"/>
<classpathentry kind="lib" path="security_api.jar"/>
<classpathentry kind="lib" path="security.jar"/>
<classpathentry kind="lib" path="bytecode.jar"/>
<classpathentry kind="lib" path="logging.jar"/>
Alltogether about 3MB.
Hope it helps (it should be precious anyhow),
Detlev