startstudentclient.java

java的一系列产品中包括jsme,jmse,j2ee,本文件提供j2ee实现的源代码.

/*
 *
 * Copyright 2002 Author,Zhang Hongzhan. All Rights Reserved.
 * 
 * This software is the proprietary information of Author.  
 * 
 */
package sessionEntity;

import java.math.BigDecimal;
import java.rmi.RemoteException;
import java.util.Properties;

import javax.ejb.CreateException;
import javax.ejb.RemoveException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.rmi.PortableRemoteObject;


public class StartStudentClient{
	
	private static final String JNDI_NAME = "StartStudentEJB";
	private static final String url  = "t3://localhost:7001";
	
  public static void main(String[] args) {
    try{
      // Get an InitialContext
      Properties env = new Properties();
      env.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");
      env.put(Context.PROVIDER_URL, url);
      
      Context ctx = new InitialContext(env);      
      Object h=ctx.lookup(JNDI_NAME);
      StartStudentHome startstudenthome=(StartStudentHome)
        	PortableRemoteObject.narrow(h,StartStudentHome.class);
      StartStudent startstudent =startstudenthome.create();
      
      String theStudent=startstudent.HelloStudent();
      System.out.println("My EJB said:"+theStudent);
      
      System.out.println("Finding All the Students in grade 20:");    
    	try {
      	Collection c = startstudent.getAllStudents(20);
      	if (c.isEmpty()) {
        	System.err.println("No Students were found in grade 20.");
      	} else {
        	Iterator it = c.iterator();
        	while (it.hasNext()) {
          	Student s = (Student) narrow(it.next(), Student.class);
          	System.err.println("Found student named: "+s.getName()+
            	" in grade 20.");
        	}
        	System.out.println("");
      	}
    	} catch (Exception e) {
      	System.err.println("Unable to find students in grade 20.");
      	//e.printStackTrace();
      	//throw e;
    	}
      
      /*BigDecimal param = new BigDecimal ("100.00");
      Collection amount = currencyHelloWorld.dollarToRMB(param);
      System.out.println("100 dollar = "+amount+" RMB");
      */

    }catch(Exception ex) {
      System.err.println("Caught an unexpected exception!");
      //ex.printStackTrace();
    }
 }
  
  private static void log(String s) {
    System.out.println(s);
  }
}