Writing a simple EJB client

Question

Hi,
I'm facing a little problem: trying to implement a plain Java client for acessing an CMP Entity Bean I keep getting
the following error:
javax.naming.NoInitialContextException: Cannot instantiate class: com.sap.engine.services.jndi.InitialContextFactoryImpl [Root exception is java.lang.ClassNotFoundException: com.sap.engine.services.jndi.InitialContextFactoryImpl]
     at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:652)
     at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:243)
     at javax.naming.InitialContext.init(InitialContext.java:219)
     at javax.naming.InitialContext.<init>(InitialContext.java:195)
     at com.test.SimpleEarClient.main(SimpleEarClient.java:65)
Caused by: java.lang.ClassNotFoundException: com.sap.engine.services.jndi.InitialContextFactoryImpl
As I am not a very experienced developer, I don't quite understand what exactly can be the reason
for this. (Maybe there is some additional reference missing?)
The code for it:
private static String userName = "userName";
     private static String password = "password";
     private static String hostUrl = "localhost:port";
     private static String initContextFactory = "com.sap.engine.services.jndi.InitialContextFactoryImpl";
     private static final String BIKECMP_LOOKUP_STRING = "sap.com/SimpleEAR/BikeCMPBean";
     public static void main(String[] args) {
          //Build the InitialContext environment properties
          Properties ctxProp = new Properties();
          ctxProp.put(Context.INITIAL_CONTEXT_FACTORY,initContextFactory);
          ctxProp.put(Context.PROVIDER_URL, hostUrl);
          ctxProp.put(Context.SECURITY_PRINCIPAL, userName);
          ctxProp.put(Context.SECURITY_CREDENTIALS, password);
          BikeCMP bean = null;
         String xmlTest;
       try{
                       Context ctx = new InitialContext(ctxProp);
                       BikeCMPHome home = (BikeCMPHome) ctx.lookup(BIKECMP_LOOKUP_STRING);
                       bean = home.findByPrimaryKey(new Integer(1));
                       xmlTest = bean.getXml();
                     System.out.println("Printing the result of the query: " + xmlTest);
Maybe you can help me on that.
Thanks!
Beata

Answer 1

Hi all
I am facing  a "NoInitialContextException" problem while ejb lookup.
I want to lookup a ejb in the same server as of my java client.
I have added all the required jars and followed each step as in the forums.Is there any other way out.
<u>Error:</u>
<i>javax.naming.NoInitialContextException: Cannot instantiate class: com.sap.engine.services.jndi.InitialContextFactoryImpl [Root exception is java.lang.ClassNotFoundException: com.sap.engine.services.jndi.InitialContextFactoryImpl]
     at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:652)
     at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:243)
     at javax.naming.InitialContext.init(InitialContext.java:219)
     at javax.naming.InitialContext.<init>(InitialContext.java:195)
     at com.chevron.ccs.mapping.Mapping.main(Mapping.java:96)
Caused by: java.lang.ClassNotFoundException: com.sap.engine.services.jndi.InitialContextFactoryImpl
     at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
     at java.lang.Class.forName0(Native Method)
     at java.lang.Class.forName(Class.java:219)
     at com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.java:42)
     at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:649)
     ... 4 more</i>
Thanks in Advance
DhanyaR Nair