modifyservlet.java

基于JSP的航空机票订票系统

package com.servlet;

import com.dao.User;
import com.dao.UserDao;
import com.test.JDBconne;
import java.io.*;
import java.sql.Connection;

import javax.servlet.*;
import javax.servlet.http.*;

public class ModifyServlet extends HttpServlet 
{
        private Connection connection;
       public void init() throws ServletException
       {
           super.init();
                    //获得数据库连接
           connection=JDBconne.getConnetion();
       }
       public void destroy()
       {
        super.destroy();
           //关闭数据库连接 
        JDBconne.closeConnection();
       }
   
  
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException 
    {
        doPost(request, response);
    }
    
    
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException
    {
        String param=request.getParameter("param");
        if(param.equalsIgnoreCase("0"))
        {
            String username=(String)request.getSession().getAttribute("username");
            UserDao userDao=new UserDao();
            // 利用username 进行数据库的查询
            // 将返回的用户信息放入User对象中
            User user=userDao.getUser(connection,username);
            String ho=user.getSex();
            String mo;
            if(ho.equals("男"))
            {
                mo="女";
            }
            else
            {
                 mo="男";
            }
            // 将性别放入session 中 
             request.getSession().setAttribute("ho",ho);
             request.getSession().setAttribute("mo",mo);
            request.getSession().setAttribute("user",user);
            request.getRequestDispatcher("info.jsp").forward(request, response);
        }
        
         
    }

}