searchservlet.java

java 开发工具书上的一些代码

/*
 * SearchServlet.java
 *
 * Created on 2006年3月17日, 上午11:45
 */

import java.io.*;
import java.net.*;
import javax.servlet.*;
import javax.servlet.http.*;

import java.util.*;
import javax.naming.*;
import javax.rmi.*;
import javax.ejb.*;
import org.netbeans.app.StatelessBeanExample.*;

/**
 *
 * @author Administrator
 * @version
 */
public class SearchServlet extends HttpServlet {
    protected PaymentRemoteHome home;
    protected PaymentRemote spayment;

    /** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
		Vector result = new Vector( );

 	    request.setCharacterEncoding("GBK");
        
        String cusname = (String)request.getParameter("customerName");
        cusname=new String(cusname.getBytes(),"ISO-8859-1");
		home = lookupHome();
            System.out.println("Home========="+home);
  	    try{
	        spayment = home.create();
		}catch(CreateException ce){
			ce.printStackTrace();
		}
          
        result = spayment.search(cusname);
		request.setAttribute("result",result);
		
		forward (request,response,"/searchresult.jsp");
    }
    
        private PaymentRemoteHome lookupHome( ) {
    // Lookup the beans home using JNDI

        PaymentRemoteHome myHome = null;

        try {

            Hashtable ht = new Hashtable();
	        ht.put(Context.INITIAL_CONTEXT_FACTORY,"org.jnp.interfaces.NamingContextFactory");
		    ht.put(Context.PROVIDER_URL, "localhost:1099");
			Context ctx = new InitialContext(ht);
	        Object home = ctx.lookup("PaymentBeanNetBeans");

		    myHome = (PaymentRemoteHome) PortableRemoteObject.narrow(home, PaymentRemoteHome.class);

        } catch (Exception e) {

            System.out.println("The client was unable to lookup the EJBHome.");
        }

        return myHome;
	}

    protected void forward(HttpServletRequest request,HttpServletResponse response,String url) throws ServletException,IOException {
		
		RequestDispatcher dispatcher = request.getRequestDispatcher(url);
		dispatcher.forward(request, response);

   }
    
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
    
    /** Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
    
    /** Returns a short description of the servlet.
     */
    public String getServletInfo() {
        return "Short description";
    }
    // </editor-fold>
}