identifyuserloginservlet.java

一个简单的汽车租赁系统 jsp+struts+oracle

package servlet;

import java.io.IOException;
import java.util.ArrayList;
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 dao.UserInfoToOracle;
import dao.Impl.UserDaoImpl;
import domian.user.UserInfo;

public class IdentifyUserLoginServlet extends HttpServlet {


	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;


	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 userpwd = request.getParameter("userpwd");
		
		
		List messages = new ArrayList();
		
		if (userName==null || userName.trim().length()==0){				
			messages.add("必须填写用户名");
			
		}
		if (userpwd==null || userpwd.trim().length()==0){				
			messages.add("必须填写用户密码");
		}
		
		
		
		UserInfo userinfo = new UserInfo();
		userinfo.setUsername(userName);
		userinfo.setUserpwd(userpwd);
		UserInfoToOracle uit = new UserInfoToOracle();
		HttpSession session=request.getSession();
		UserInfo user =  new UserInfo();
	
	
		
		user = uit.identityUser(userinfo);
		
		if(user == null){
			messages.add("没查到相关信息,请重新填写");
		}
		if (!messages.isEmpty()) {
			request.setAttribute("user", userinfo);
			request.setAttribute("errors", messages);  
			request.getRequestDispatcher("UserLogin.jsp").forward(request, response);
			return;
		}
		session.setAttribute("session_userinfo", user);
		request.getRequestDispatcher("adm_index.jsp").forward(request, response);
	}

}