"vijaypalsingh" wrote : Hi Everybody,
| I'am creating a example using ejb3 and jboss 4.0.2 where my .ear file
contains the following structure,
| 1.A war file(for login page anf dashboard)
| 2.A .par file(including 1 stateless and 3 entity bean and a persistence.xml)
| my example works excellent when i run it from a standalone client from
eclipse.but when I try to access it from the web client it produces following
error.
| Exception in Helper.lookup() java.lang.ClassCastException: cannot assign
| instance of org.jboss.proxy.ejb.EJBMetaDataImpl to field
org.jboss.ejb3.session.BaseSessionRemotePr
| oxy.ejbMetaData of type javax.ejb.EJBMetaData in instance of
org.jboss.ejb3.stateless.StatelessRemot
| eProxy
|
| My Code is as following
| /** HELPER CLASS ***/
| import java.util.Properties;
| import javax.naming.InitialContext;
| import javax.naming.NamingException;
|
|
| public class Helper {
| /**
| * RETURN INITIAL CONTEXT FOR THE JNDI LOOKUP.
| * @return
| */
| private InitialContext getInitialContext(){
| InitialContext ctx=null;
| Properties env = new Properties();
|
env.put("java.naming.factory.initial","org.jnp.interfaces.NamingContextFactory");
| env.put("java.naming.provider.url", "jnp://nsg-sd36:1099");
|
env.put("java.naming.factory.url.pkgs","org.jboss.naming:org.jnp.interfaces");
| try{
| ctx = new InitialContext(env);
| }catch(NamingException n){
| System.out.println("Naming Exception "+n);
| }
| System.out.println(" Returning Initial Context "+ctx+" From
Helper.getInitialContext()");
| return ctx;
| }
| public Object lookup(String JNDIName){
| System.out.println("Inside Lookup "+JNDIName);
| Object obj=null;
| try {
| InitialContext ctx =
(InitialContext)getInitialContext();
| System.out.println(" 1. "+ctx);
| obj = ctx.lookup(JNDIName);
| }catch(Exception e){
| System.out.println("Exception in Helper.lookup() "+e);
| }
| System.out.println("Returning "+obj+" From Helper.lookup()");
| return obj;
| }
|
|
| }
|
| /*** CLIENT CODE ***/
| public boolean validateUser(String userName,String password){
| System.out.println("5.Inside LoginAction.validateUser()");
| System.out.println("6.VALUE RECEIVED IN VALIDATE-USER USER-NAME
="+userName+" AND PASSWORD = "+password);
| boolean flag=false;
| ApplicationUser applicationUser=null;
| Helper helper = new Helper();
|
applicationUser=(ApplicationUser)helper.lookup(ApplicationUser.class.getName());
| try{
| flag = applicationUser.login(userName,password);
| }catch(Exception e){
| System.out.println("Exception occured"+e);
| }
| System.out.println("7.VALUE BEING RETURNED FROM VALIDATE-USER =
"+flag);
| return flag;
| }
|
| /*** BEAN CODE ****/
| public boolean login(String userName, String password) {
| boolean retval=false;
| java.util.List list = manager.createQuery("select
count(user)from User user where user.userName = '"+userName+"' and
user.password = '"+password+"' ").getResultList();
| if(list!=null && list.get(0)!=null&& list.get(0).equals("")){
| System.out.println("ApplicationUserBean.login value
received from query = "+list.get(0));
| if(list.get(0).equals("0"))
| retval= false;
| else
| retval= true;
| }
| return retval;
| }
|
| Thanks in anticipation,
| Vijaypal Singh
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