servletdeng.java

登录页面保护(通过jsp调用servlet实现页面保护

package com;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;

public class servletdeng extends HttpServlet
{
	public void doPost(HttpServletRequest request,HttpServletResponse response)throws
	ServletException,IOException
	{
		boolean ok;
		HttpSession session=request.getSession(true);
		String name=request.getParameter("usename");
		String pass=request.getParameter("pass");
	   	LoginBean login=new LoginBean();
		ok=login.selectDenglu(name,pass);
		if(ok==true)
		{
		  session.setAttribute("usename",name);
		  request.getRequestDispatcher("Deng.jsp").forward(request,response);
		}
		else
		{
		  request.getRequestDispatcher("on.jsp").forward(request,response);	
		}
	}
}