www.pudn.com > 200513174851152(JSP+wml).zip > ItemListServlet.java

import java.io.*; 
import javax.servlet.http.*; 
import javax.servlet.*; 
import javax.rmi.*; 
import javax.naming.*; 
import java.util.*; 
 
 
public class ItemListServlet extends HttpServlet 
{ 
 
	 
	ItemHome itemHome; 
	 
	public void init() throws ServletException 
	{ 
		try 
		{ 
			System.out.println("trying to get initial context"); 
			Context ic = (InitialContext) getInitialContext(); 
			System.out.println("Got InitContext"); 
			Object objRef = ic.lookup("Item"); 
			System.out.println("Got obj ref"); 
			itemHome = (ItemHome) PortableRemoteObject.narrow(objRef,ItemHome.class); 
			System.out.println("Got Home"); 
		}catch(Exception e) 
		{ 
			System.out.println("Error in init"); 
			e.printStackTrace(); 
		} 
	} 
	 
	public void doGet(HttpServletRequest req,HttpServletResponse res) throws ServletException,IOException 
	{ 
		 
		try 
		{ 
			HttpSession session = req.getSession(false); 
			String clientCode = (String)req.getParameter("client"); 
			session.setAttribute("ClientId",clientCode); 
			Collection items = itemHome.findAll(); 
			if(items.size() <= 0) 
			{ 
				System.out.println("items size: " + items.size()); 
				res.sendRedirect(res.encodeURL("/Status.jsp?code=3")); 
			} 
			Vector itemInfo[] = new Vector[items.size()]; 
			System.out.println("length of item list: " + items.size()); 
			Iterator i = items.iterator(); 
			int cnt=0; 
			System.out.println("Beginning search"); 
 
			while(i.hasNext()) 
			{ 
				 
				Item item = (Item) i.next(); 
				itemInfo[cnt] = new Vector(3); 
				itemInfo[cnt].add(item.getId()); 
				itemInfo[cnt].add(item.getName()); 
				itemInfo[cnt].add(item.getDescription()); 
				cnt++; 
			 
			} 
			session.setAttribute("ItemList",itemInfo); 
			System.out.println("redirecting to itemlist jsp"); 
			res.sendRedirect(res.encodeURL("/ItemList.jsp")); 
		}catch(Exception e){ 
			System.out.println("Error while obtaining item list:" + e.getMessage()); 
			res.sendRedirect(res.encodeURL("/Status.jsp?code=1")); 
 
		} 
	} 
	 
	private Context getInitialContext() throws NamingException 
    { 
    	Properties h = null; 
    	try { 
      // Get an InitialContext 
      	h = new Properties(); 
      	h.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory"); 
	      h.put(Context.PROVIDER_URL, "t3://localhost:7001"); 
      	 
	       
    	}catch(Exception ne) { 
      	System.out.println("Unable to get an initial context"); 
    	} 
		return new InitialContext(h);    
   } 
 
}