loginservlet.java

EJB的网上银行系统,非常具有参考价值

package bankonlinesystem.login.controller;

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

public class loginServlet 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");
        //取出页面的值
        String user = request.getParameter("user").trim();
        String password = request.getParameter("password").trim();
        System.out.println(user+"   ++++   "+password);
        HttpSession session = request.getSession(true);
        session.setMaxInactiveInterval(30);
        try {
            Context context = ContextUtil.getContext();
            Object obj = context.lookup("OpenAccount");
            OpenAccountHome accountHome = (OpenAccountHome)
                                          PortableRemoteObject.narrow(obj,
                    OpenAccountHome.class);
            OpenAccount account = accountHome.create();
            if(account.login(user,password) == 4){
                AccountDto accountDto = account.getAccount(user);
                System.out.println("尝试得到accountDto.getID():"+accountDto.getID()+"余额："+accountDto.getBalance().toString());;
                //把数据bean放入页面会话，使其它页面调用
                session.setAttribute("account",accountDto);
                //成功转跳
                response.sendRedirect("/WebModule/savings.jsp");
            }
        } catch (Exception ex) {
            session.setAttribute("errMessage","帐号或密码不正确");
            response.sendRedirect("/WebModule/index.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() {
    }
}