balanceservlet.java

EJB的网上银行系统,非常具有参考价值

package bankonlinesystem.openaccount.controller;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import javax.rmi.PortableRemoteObject;
import javax.naming.Context;
import bankonlinesystem.common.util.ContextUtil;
import bankonlinesystem.openaccount.ejb.session.*;
import bankonlinesystem.openaccount.dto.AccountDto;

public class balanceServlet extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=GBK";

    //Initialize global variables
    public void init() throws ServletException {
    }

    //Process the HTTP Get request
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        response.setContentType(CONTENT_TYPE);
        PrintWriter out = response.getWriter();
        //取出会话
       HttpSession session = request.getSession();
       AccountDto accountDto = (AccountDto)session.getAttribute("account");
       System.out.println("取出余额页面加载时的余额："+accountDto.getBalance());
       try {
           //调用会话Bean方法取出所有交易
           Context context = ContextUtil.getContext();
           Object obj = context.lookup("OpenAccount");
           OpenAccountHome openAccountHome = (OpenAccountHome)PortableRemoteObject.narrow(obj,OpenAccountHome.class);
           OpenAccount openAccount = openAccountHome.create();
           ArrayList list =  openAccount.getAllRecordByID(accountDto.getID());
           //放入会话
           session.setAttribute("list",list);
           //发到需要的页面
           response.sendRedirect("/WebModule/balance.jsp");
       } catch (Exception ex) {
           ex.printStackTrace();
       }
        out.close();
    }

    //Process the HTTP Post request
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        doGet(request, response);
    }

    //Clean up resources
    public void destroy() {
    }
}