enterprise1bean.java~8~

使用JBulider开发的java实例。非常全。

package cmp2bean;

import javax.ejb.*;
import javax.naming.*;
import java.util.Properties;
import javax.rmi.PortableRemoteObject;

public class Enterprise1Bean implements SessionBean {
  SessionContext sessionContext;
  private ContactHome contactHome = null;
private Contact contact = null;

  public void ejbCreate() throws CreateException {
    /**@todo Complete this method*/
  }
  public void ejbRemove() {
    /**@todo Complete this method*/
  }
  public void ejbActivate() {
    /**@todo Complete this method*/
  }
  public void ejbPassivate() {
    /**@todo Complete this method*/
  }
  public void setSessionContext(SessionContext sessionContext) {
    this.sessionContext = sessionContext;
  }
  public void displayPerson(String last)
 {
       try
       {
               Context context = getInitialContext();

     //look up jndi name
     Object ref = context.lookup("Contact2");
     //look up jndi name and cast to Home interface
     contactHome = (ContactHome) PortableRemoteObject.narrow(ref, ContactHome.class);
     System.out.println("find a record whose key is:"+last);
                      contact=contactHome.findByPrimaryKey(last);
              System.out.println("getFirst(): "+contact.getFirst()+
                                         " getLast(): "+contact.getLast()+
                                         " getEmail(): "+contact.getEmail());
       }
       catch (Exception ex)
       {
               System.out.println("Exception in displayPerson in PersonHandlerBean:"+ex);
       }

 }
 public void insertPerson(String first,String last, String email)
{     try
            {
                    Context context = getInitialContext();

          //look up jndi name
          Object ref = context.lookup("Contact2");
          //look up jndi name and cast to Home interface
          contactHome = (ContactHome) PortableRemoteObject.narrow(ref, ContactHome.class);
          System.out.println("insert a record whose key is:"+last);
                           contact=contactHome.create(last);
                           contact.setFirst(first);
                           contact.setEmail(email);
                   System.out.println("getFirst(): "+contact.getFirst()+
                                              " getLast(): "+contact.getLast()+
                                              " getEmail(): "+contact.getEmail());
            }
            catch (Exception ex)
            {
                    System.out.println("Exception in displayPerson in PersonHandlerBean:"+ex);
            }
}
 private Context getInitialContext() throws Exception {
     String url = "t3://localhost:7001";
     String user = null;
     String password = null;
     Properties properties = null;
     try {
       properties = new Properties();
       properties.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
       properties.put(Context.PROVIDER_URL, url);
       if (user != null) {
         properties.put(Context.SECURITY_PRINCIPAL, user);
         properties.put(Context.SECURITY_CREDENTIALS, password == null ? "" : password);
       }

       return new InitialContext(properties);
     }
     catch(Exception e) {
       System.out.println("Unable to connect to WebLogic server at " + url);
       System.out.println("Please make sure that the server is running.");
       throw e;
     }
   }

}