loginaction.java

该系统实现了网上购物及书店管理

package action.reg;

import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForm;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForward;

import bean.*;

import org.apache.struts.action.Action;

import db.*;
import form.reg.LoginActionForm;

public class LoginAction extends Action {
	/**
	 * 覆盖Action的execute（）方法
	 * 
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		// 将form对象进行适当的类型转换
		LoginActionForm loginForm = (LoginActionForm) form;
		// 从actionform中取得用户名和用户密码
		String userName = loginForm.getUserNmae();
		String userPwd = loginForm.getUserPwd();
		// 创建CustomerOperation对象
		CustomerOperation md = new CustomerOperation();
		if (request.getParameter("action") == null) {
			if (userName.equals("") || userPwd.equals("")) {
				return mapping.findForward("index");
			}
			// 通过CustomerOperation对象验证登陆的用户
			UserBean useBean = md.checkUsersLogin(userName, userPwd);
			if (useBean != null) {
				md.Close();
				// 将特定信息保存到request中
				request.getSession().setAttribute("useBean", useBean);
				request.getSession().setAttribute("shangpin", "0");
				request.getSession().setAttribute("zongshu", "0");
				request.getSession().setAttribute("gongji", "0");
				request.getSession().setAttribute("loginms", 1);
				request.getSession().setAttribute("list",
						new java.util.ArrayList());
				return mapping.findForward("index");
			} else {
				request.getSession().setAttribute("useBean", useBean);
				request.setAttribute("loginms", 0);
				md.Close();
				return mapping.findForward("index");
			}

		}
		if (request.getParameter("action").equals("out")) {
			request.getSession().removeAttribute("useBean");
			request.getSession().removeAttribute("list");
			request.getSession().removeAttribute("shangpin");
			request.getSession().removeAttribute("zongshu");
			request.getSession().removeAttribute("gongji");
			return mapping.findForward("index");
		}
		return mapping.findForward("login");
	}
}