savingsservlet.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 bankonlinesystem.openaccount.dto.*;
import bankonlinesystem.common.util.*;
import javax.naming.Context;
import javax.rmi.PortableRemoteObject;
import bankonlinesystem.openaccount.ejb.session.*;
import java.math.BigDecimal;

public class savingsServlet 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();
        request.setCharacterEncoding("GBK");
        //得到页面的值
        String saveMoney = request.getParameter("saveMoney");
        //得到登录页面传过来的会话
        HttpSession session = request.getSession();
        AccountDto accountDto = (AccountDto)session.getAttribute("account");
        System.out.println("ID:"+accountDto.getID());
        try {
            Context context = ContextUtil.getContext();
            Object obj = context.lookup("OpenAccount");
            OpenAccountHome openAccountHome = (OpenAccountHome)PortableRemoteObject.narrow(obj,OpenAccountHome.class);
            OpenAccount openAccount = openAccountHome.create();
            System.out.println("调用存款的方法前");
            //调用存款的方法
            openAccount.modifyMondy(accountDto.getID(),"存款",new BigDecimal(saveMoney));
            System.out.println("调用存款的方法后");
            //重新存入已更改的session
            obj = openAccount.getAccount(accountDto.getID());
            session.setAttribute("account",obj);
            //显示成功
            System.out.println("显示成功");
            session.setAttribute("message","已成功存入金额 "+saveMoney+" 元");
            response.sendRedirect("/WebModule/savings.jsp");
        } catch (Exception ex) {
            session.setAttribute("message","存款失败"+ex.getMessage());
            response.sendRedirect("/WebModule/savings.jsp");
        }
        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() {
    }
}