inputservlet.java

java 开发工具书上的一些代码

/*
 * InputServlet.java
 *
 * Created on 2006年3月17日, 上午11:02
 */

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 InputServlet 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 {
  		request.setCharacterEncoding("GBK");
		boolean pay=false;
         String paymentType = (String) request.getParameter("paymentType");
         String cusname = (String)request.getParameter("customerName");
         cusname=new String(cusname.getBytes(),"ISO-8859-1");
         String cardNumber = (String)request.getParameter("cardNumber");
        try { double cartValue = Double.parseDouble(request.getParameter("cartValues"));
            home = lookupHome();
            spayment = home.create();
             if(paymentType.equals("cash")) {
                pay = spayment.payByCash(cusname,cartValue);
                }else if (paymentType.equals("check")){
                   pay = spayment.payByCheck(cusname, cardNumber, cartValue);
                }else {
                    pay = spayment.payByCreditCard(cusname, cardNumber, cartValue);
                }
        }
		 catch(Exception ce){ce.printStackTrace();}      
		if (pay){
				forward (request,response,"/result.jsp");
				}else {
					forward (request,response,"/error.jsp");
				}

    }
    
    // <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";
    }
    
    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>
}