adlogincontroller.java

学习jsp时做的一个书馆

  import java.io.IOException;

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

import library.admin;
@SuppressWarnings("serial")
public class AdLoginController extends Controller {
	 public void doPost (HttpServletRequest req,
				HttpServletResponse res) throws ServletException, IOException {
		
		String pass=null, uname=null;

		HttpSession session = req.getSession();
		
		pass = req.getParameter("adpasswd");
		uname = req.getParameter("cardNumber");
		
		session.invalidate();
		
		session = req.getSession();
		
	    boolean islogin = false;
		try {
			islogin = (new admin(uname,pass)).isLogin();
		} catch (Exception e) {
			sendErrorRedirect(req, res, e);
		}
		
		try {
		    if (islogin == true) {
			    session.setAttribute("adlogin", "yes");
			    res.sendRedirect("../admin/welcome.jsp");
		    } else {
			
		    	
			res.sendRedirect("../admin/login.jsp?errMsg=cuowu");
		    }
		} catch (Exception e2) {
		    sendErrorRedirect(req, res, e2);
		}
	    }
}