modifyservlet.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.AccountDto;
import javax.naming.Context;
import bankonlinesystem.common.util.*;
import bankonlinesystem.openaccount.ejb.session.*;
import javax.rmi.PortableRemoteObject;

public class modifyServlet 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");
        //取到旧密码和新密码
        String oldPassword = request.getParameter("oldPassword");
        String newPassword = request.getParameter("affirmPassword");
        //得到会话里面的密码进行比较
        HttpSession session = request.getSession();
        AccountDto accountDto = (AccountDto)session.getAttribute("account");
        //判断
        if(!accountDto.getPassword().equals(oldPassword)){
            session.setAttribute("passwordMessage","对不起，你的旧密码不正确!");
            response.sendRedirect("/WebModule/ModifyPassword.jsp");
            return;
        }
        try {
            //调用会话Bean的方法修改密码
            Context context = ContextUtil.getContext();
            Object obj = context.lookup("OpenAccount");
            OpenAccountHome openAccountHome = (OpenAccountHome)PortableRemoteObject.narrow(obj,OpenAccountHome.class);
            OpenAccount openAccount = openAccountHome.create();
            openAccount.changPassword(accountDto.getID(),newPassword);
            //更新会话account的值
            accountDto = openAccount.getAccount(accountDto.getID());
            session.setAttribute("account",accountDto);
            //修改成功
            session.setAttribute("passwordMessage","修改密码成功!");
            response.sendRedirect("/WebModule/ModifyPassword.jsp");
        } catch (Exception ex) {
            //错误转发
            session.setAttribute("passwordMessage","修改密码失败!"+ex.getMessage());
            response.sendRedirect("/WebModule/ModifyPassword.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() {
    }
}