showtypeaction.java

网上购物系统 基于jsp实现 运行环境eclipse+My SQL+TomCat

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package book.jsj0707.struts.action;

import java.util.LinkedList;
import java.util.List;

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

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 book.jsj0707.dao.BookDAO;
import book.jsj0707.dao.PressDAO;
import book.jsj0707.entity.Book;

/** 
 * MyEclipse Struts
 * Creation date: 01-11-2009
 * 
 * XDoclet definition:
 * @struts.action input="/user/type.jsp" scope="request" validate="true"
 * @struts.action-forward name="ok" path="/user/type.jsp"
 */
public class ShowTypeAction extends Action {
	/*
	 * Generated Methods
	 */
	BookDAO bookDAO;
	
	public BookDAO getBookDAO() {
		return bookDAO;
	}
	public void setBookDAO(BookDAO bookDAO) {
		this.bookDAO = bookDAO;
	}

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		HttpSession session = request.getSession();
		session.removeAttribute("typebook");
		session.removeAttribute("typebook1");
		//首先这个模块是实现按分类查询功能
		//typebook是book对象的列表，但是book列表内只有出版社ID，为了显示出版社名称
		//由typebook1来取得出版社名称列表
		List typebook = new LinkedList();
		List typebook1 = new LinkedList();
		
		String ca;
		if(request.getParameter("categoryid")==null)
		{
			ca="1";
		}
		else
		{
			ca = String.valueOf(request.getParameter("categoryid"));
		}
		//返回带出版社名称的LIST
		List list = bookDAO.findTypePress(Long.parseLong(ca));
		
		for(int i=0;i<list.size();i++)
		{
			Object[] row = (Object[])list.get(i);
			typebook.add(i,(Book)row[0]);
			typebook1.add(i, String.valueOf(row[1]));
		}
		session.setAttribute("typebook", typebook);
		session.setAttribute("typebook1", typebook1);
		
		if(session.getAttribute("user") == null)
		{
			return mapping.findForward("usergo");
		}
		else
		{
			return mapping.findForward("customergo");
		}
	}

}