userloginservlet.java

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package servlets.userlogin;

import java.io.IOException;
import java.util.Vector;
//import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import bo.UserGR;
import dao.ActionDAO;
import dao.UserDAO;
/*
* @author sky.Apollo
* @version 创建时间：2009-3-16 上午08:16:04 
* 用户登陆
 */
public class UserLoginServlet extends HttpServlet {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1011L;

	/**
	 * Constructor of the object.
	 */
	public UserLoginServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doPost(request,response);
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.setCharacterEncoding("gbk");
		response.setContentType("text/html;charset=gbk");
		UserGR user = new UserDAO().selectUserByNP(request.getParameter("userName"), request.getParameter("password"));
		
		
		if (user != null&&user.getUserName().equals(request.getParameter("userName"))&&user.getPassword().equals(request.getParameter("password"))) {	
			int roleId1=user.getRoleId();
			String roleId=String.valueOf(roleId1);
			Vector action = new ActionDAO().selectAllActionByRole(roleId);
			request.getSession().setAttribute("action",action);
			request.getSession().setAttribute("user",user);
			request.getRequestDispatcher("/main.jsp").forward(request, response);	
		}
		else {
			request.setAttribute("failed", "登陆失败，用户名或密码错误!<br>或者你没有加入任何组或角色");
			request.getRequestDispatcher("/index.jsp").forward(request, response);
		}	
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}