login.java

用jdbc写的一个存储过程的代码

package com.bluedot.web.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

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 com.bluedot.common.Constants;
import com.bluedot.domain.User;
import com.bluedot.exceptions.ApplicationException;
import com.bluedot.exceptions.DataAccessException;
import com.bluedot.exceptions.UserNotFoundException;
import com.bluedot.service.UserManager;
import com.bluedot.service.UserManagerImpl;

public class Login extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doPost(request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		String userName = request.getParameter("userName");
		String pwd = request.getParameter("pwd");

		// 校验

		//
		UserManager m = new UserManagerImpl();
		User user = null;
		try {
			user = m.login(userName, pwd);

			HttpSession session = request.getSession();
			session.setAttribute(Constants.USER_LOGIN_SESSION_KEY, user);
			response.sendRedirect("index.jsp");
		} catch (UserNotFoundException e) {
			e.getMessage();
			List list = e.getList();
			request.setAttribute("msg", e.getMessage());
			request.getRequestDispatcher("login.jsp")
					.forward(request, response);
		} catch (DataAccessException e) {
			request.setAttribute("msg", e.getMessage());
			request.getRequestDispatcher("login.jsp")
					.forward(request, response);
		} catch (ApplicationException e) {
			response.sendRedirect("error.jsp");
		}

	}
}