entryservlet.java

海鲜超市管理 登录 修改 增加 等功能jsp+servlet

/*
 * 创建日期 2006-12-17
 * TODO
 */
package module.entry.servlet;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import module.entry.dco.EntryDco;


public class EntryServlet  extends HttpServlet {

	protected void service (HttpServletRequest request,HttpServletResponse response)
	throws ServletException,IOException{
		
		String target = null;
		String name = request.getParameter("username");
		String pswd = request.getParameter("password");
		EntryDco dco = new EntryDco();
		HttpSession session = request.getSession(true);
		String flag = null;
		
		if("".equals(name)||"".equals(pswd)){
			session.setAttribute("error","Name or pasword is null!");
			target = "index.jsp";
		}else if((flag = dco.SelectFlag(name,pswd))==null){
			session.setAttribute("error","Wrong name or password!");
			target = "index.jsp";
		}else{
		session.setAttribute("flag",flag);
		session.setAttribute("name",name);
			target = "/jsp/public/description.jsp";
		}
		
		
		RequestDispatcher rd = request.getRequestDispatcher(target);
		rd.forward(request,response);
		
	}
}