header.java

基于struts+hibernate的电子商务网站。可运行。数据库mysql

/**
  * @(#)tarena.action.Header.java  2008-10-31  
  * Copy Right Information	: Tarena
  * Project					: xindou
  * JDK version used		: jdk1.6.4
  * Comments				: 网页头。
  * Version					: 1.0
  * Sr	Date		Modified By		Why & What is modified
  * 1.	2008-10-31 	小猪     		新建
  **/
package tarena.action;

import java.util.Vector;

import javax.servlet.http.Cookie;
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;

import tarena.dao.CategoryDAO;
import tarena.dao.UserDAO;
import tarena.data.AbractCategory;
import tarena.global.CookieOperate;
import tarena.global.PublicParameter;

 /**
 * 网页头。显示logo，菜单等。
 * 2008-10-31
 * @author		达内科技[Tarena Training Group]
 * @version	1.0
 * @since		JDK1.6(建议) 
 */
public class Header extends Action {

	@Override
	public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
		//1.获取客户端cookie
		//2.获取用户是否登陆的cookie,此处需要检测该cookie的用户是否为注册用户
		//3.保存cookie到requestScope，保存名称为username
		//4.查询所有分类，保存名称为categorys
		//5.查询顶级分类，保存名称为rootcategory
		//6.保存到request
		//7.定向到header
		Cookie cookie = CookieOperate.FindCookie(PublicParameter.cookie_user, request.getCookies());
		if(cookie!=null){
			//System.out.println(cookie.getValue()+"\nage:"+cookie.getMaxAge());
			UserDAO userDAO = new UserDAO();
			if(userDAO.isRegisterUser(cookie.getValue()))
				request.setAttribute("username", cookie.getValue());
			else{
				CookieOperate.DeleteCookie(cookie, response);
				cookie.setMaxAge(0);
				response.addCookie(cookie);
				//System.out.println("come delete cookie");
			}
		}
		CategoryDAO dao = new CategoryDAO();
		Vector<AbractCategory> categorys = dao.ListCategory(0, 0,false);
		Vector<AbractCategory> rootCategorys = dao.ListTopCategory();
		request.setAttribute("categorys", categorys);
		request.setAttribute("rootcategorys", rootCategorys);
		return mapping.findForward("header");
	}
}