dispatcher.java

本教程介绍j2ee企业开发方面的知识

/*
 *
 * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * This software is the proprietary information of Sun Microsystems, Inc.  
 * Use is subject to license terms.
 * 
 */

package com.sun.ebank.web;
import javax.servlet.*;
import javax.servlet.http.*;
import com.sun.ebank.util.Debug;
import java.util.*;

public class Dispatcher extends HttpServlet {
  public void doGet(HttpServletRequest request, HttpServletResponse response) {   
      HttpSession session = request.getSession();
      ResourceBundle messages = (ResourceBundle)session.getAttribute("messages");
      if (messages == null) {
         Locale locale=request.getLocale();
         messages = ResourceBundle.getBundle("WebMessages", locale); 
         session.setAttribute("messages", messages);
      }


    String selectedScreen = request.getServletPath();
    request.setAttribute("selectedScreen", selectedScreen);
    BeanManager beanManager = (BeanManager)getServletContext().getAttribute("beanManager");

    if (selectedScreen.equals("/accountHist")) {
      AccountHistoryBean accountHistoryBean = new AccountHistoryBean();
      request.setAttribute("accountHistoryBean", accountHistoryBean);
      try {
        accountHistoryBean.setAccountId(request.getParameter("accountId"));
        accountHistoryBean.setSortOption(Integer.parseInt(request.getParameter("sortOption")));
        accountHistoryBean.setActivityView(Integer.parseInt(request.getParameter("activityView")));
        accountHistoryBean.setDate(Integer.parseInt(request.getParameter("date")));
        accountHistoryBean.setSinceDay(Integer.parseInt(request.getParameter("sinceDay")));
        accountHistoryBean.setSinceMonth(Integer.parseInt(request.getParameter("sinceMonth")));
        accountHistoryBean.setBeginDay(Integer.parseInt(request.getParameter("beginDay")));
        accountHistoryBean.setBeginMonth(Integer.parseInt(request.getParameter("beginMonth")));
        accountHistoryBean.setEndDay(Integer.parseInt(request.getParameter("endDay")));
        accountHistoryBean.setEndMonth(Integer.parseInt(request.getParameter("endMonth")));
      } catch (NumberFormatException e) {
      }
      accountHistoryBean.setBeanManager(beanManager);
      accountHistoryBean.populate();
    }
    try {
        request.getRequestDispatcher("/template.jsp").forward(request, response);
    } catch(Exception ex) {
      ex.printStackTrace();
    }
  }
  public void doPost(HttpServletRequest request, HttpServletResponse response) {
    HttpSession session = request.getSession();
    ResourceBundle messages = (ResourceBundle)session.getAttribute("messages");
    String selectedScreen = request.getServletPath();
    Debug.print(selectedScreen);  
    request.setAttribute("selectedScreen", selectedScreen);
    BeanManager beanManager = (BeanManager)getServletContext().getAttribute("beanManager");

    if (selectedScreen.equals("/accountHist")) {
      AccountHistoryBean accountHistoryBean = new AccountHistoryBean();
      request.setAttribute("accountHistoryBean", accountHistoryBean);
      try {
        accountHistoryBean.setAccountId(request.getParameter("accountId"));
        accountHistoryBean.setSortOption(Integer.parseInt(request.getParameter("sortOption")));
        accountHistoryBean.setActivityView(Integer.parseInt(request.getParameter("activityView")));
        accountHistoryBean.setDate(Integer.parseInt(request.getParameter("date")));
        accountHistoryBean.setSinceDay(Integer.parseInt(request.getParameter("sinceDay")));
        accountHistoryBean.setSinceMonth(Integer.parseInt(request.getParameter("sinceMonth")));
        accountHistoryBean.setBeginDay(Integer.parseInt(request.getParameter("beginDay")));
        accountHistoryBean.setBeginMonth(Integer.parseInt(request.getParameter("beginMonth")));
        accountHistoryBean.setEndDay(Integer.parseInt(request.getParameter("endDay")));
        accountHistoryBean.setEndMonth(Integer.parseInt(request.getParameter("endMonth")));
      } catch (NumberFormatException e) {
      }
      accountHistoryBean.setBeanManager(beanManager);
      accountHistoryBean.populate();
    } else if (selectedScreen.equals("/transferAck")) {
      String fromAccountId = request.getParameter("fromAccountId");
      String toAccountId = request.getParameter("toAccountId");
      if ( (fromAccountId == null) || (toAccountId == null) ) {
        request.setAttribute("selectedScreen", "/transferError");
      } else { 
         TransferBean transferBean = new TransferBean();
         request.setAttribute("transferBean", transferBean);
         transferBean.setFromAccountId(fromAccountId);       
         transferBean.setToAccountId(toAccountId);
         transferBean.setBeanManager(beanManager);
         try {
           transferBean.setTransferAmount((Double.valueOf(request.getParameter("transferAmount"))).doubleValue());
         } catch (NumberFormatException e) {
         }
         transferBean.populate();
      }
    } else if (selectedScreen.equals("/atmAck")) {
         ATMBean atmBean = new ATMBean();
         request.setAttribute("atmBean", atmBean);
         atmBean.setMessages(messages);         
         atmBean.setAccountId(request.getParameter("accountId"));
         atmBean.setBeanManager(beanManager);
         try {
            atmBean.setAmount((Double.valueOf(request.getParameter("amount"))).doubleValue());
            atmBean.setOperation(Integer.parseInt(request.getParameter("operation")));
         } catch (NumberFormatException e) {
         }
         atmBean.populate();
    }      
      
    try {
        request.getRequestDispatcher("/template.jsp").forward(request, response);
    } catch(Exception e) {
    }
  }
}