checkin_admin.java

用JAVA再WEB上做的留言薄

/*****************************************************************
                        *  Date:2007-05-10         *
                        *  File:checkin_admin.java *
                        *  Author:jezz             *
*****************************************************************/
package wm.servlet;

import java.util.*;  
import java.sql.*;
import java.io.*;
import javax.servlet.*;  
import javax.servlet.http.*;
import javax.servlet.http.HttpSession.*;

import wm.bean.messFun;

public class checkin_admin extends HttpServlet
{
	public void init() throws ServletException
	{
	}
		
	public void doGet(HttpServletRequest request,HttpServletResponse response)
	throws ServletException,IOException
	{
		messFun MF =new messFun();
                response.setContentType("text/html;charset=GBK");
		HttpSession session=request.getSession();
		String yhm1 = request.getParameter("yhm");
		String yhmm1 = request.getParameter("yhmm");
		String rand = (String)session.getAttribute("rand");//读取session的值
		String code = request.getParameter("rand");
		String msg="";
		if(yhm1=="")
			msg+="<li>用户名不能为空</li>";
		if(yhmm1=="")
			msg+="<li>密码不能为空</li>";
		if(!rand.equals(code))
			msg+="<li>验证码不正确</li>";
		if(msg.equals(""))
		{
		        boolean result=MF.checkLogin(yhm1,yhmm1);	
			if(result==true)
			{
				session.setAttribute("login","1");
				response.sendRedirect("index.jsp");
			}
			else
			{
				msg+="<li>用户名或密码不对</li>";
				request.setAttribute("msg",msg);
                                RequestDispatcher wm =request.getRequestDispatcher("common.jsp");
				wm.forward(request,response);
			}
			
			
			
		}
		else
		{
			request.setAttribute("msg",msg);
			RequestDispatcher wm=request.getRequestDispatcher("common.jsp");
			wm.forward(request,response);

		}

	}	
	
	public void doPost(HttpServletRequest request,HttpServletResponse response)
	throws ServletException,IOException
	{
		doGet(request,response);
	}
	
	public void destroy()
	{
	}
}