loginaction.java

基于JSP+Struts的在线购物商城

package eshop.struts;

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */

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

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

/**
 * MyEclipse Struts Creation date: 08-27-2007
 * 
 * XDoclet definition:
 * 
 * @struts.action validate="true"
 */
public class LoginAction extends Action {

	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		LoginActionForm loginForm = (LoginActionForm) form;
		String username = loginForm.getUsername();
		String password = loginForm.getPassword();
		MyDb md = new MyDb(); // 虚拟的数据库操作类
		if (request.getParameter("action") == null) {
			if (username.equals("") || password.equals("")) {
				return mapping.findForward("loginfail");
			}
			UserBean useBean = md.checkUsersLogin(username, password);// 用户是否存在
			if (useBean != null) {
				md.close();
				request.getSession().setAttribute("useBean", useBean);
				ShoppingCart cart = new ShoppingCart();
				request.getSession().setAttribute("cart", cart);
				return mapping.findForward("loginsuccess");
			} else {
				request.setAttribute("loginfail", 0);
				md.close();
				return mapping.findForward("loginfail");
			}
		}
		if (request.getParameter("action").equals("out")) {
			request.getSession().removeAttribute("useBean");
			request.getSession().removeAttribute("cart");
			return mapping.findForward("login");
		}
		return null;
	}

}