package action.admin;

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 org.apache.struts.action.Action;

import db.AdminOperation;

import java.util.ArrayList;

public class BookPage extends Action {
	/**
	 * 覆蓋Action的execute（）方法
	 * 
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		int count = 10;
		int page = 1;
		//創建AdminOperation對象
		AdminOperation db = new AdminOperation();
		if (request.getParameter("page") != null) {
			page = Integer.parseInt(request.getParameter("page"));
			page = page == 0 ? 1 : page;
		}
		//通過AdminOperation對象從數據庫查詢到所有的圖書信息，并保存到鏈表中
		ArrayList list = db.getBooksList(count, page);
		//將page信息保存到request中
		request.setAttribute("page", page + "");
		//將pagecount信息保存到request中
		request.setAttribute("pagecount", db.getSearchCountPage() + "");
		//將圖書列表保存到request中
		request.setAttribute("list", list);
		//關閉數據庫的連接
		db.Close();
		return mapping.findForward("booklist");

	}
}