booklistaction.java

达内网上购物系统

package org.whatisjava.dang.action;

import java.util.List;

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 org.whatisjava.dang.service.CatalogService;

public class BookListAction extends Action {
	private CatalogService cs = new CatalogService();

	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		String cidStr = request.getParameter("cid");
		String pageStr = request.getParameter("page");
		if (cidStr != null) {
			int page = pageStr == null ? 1 : Integer.parseInt(pageStr);
			Integer cid = Integer.valueOf(cidStr);
			List<?> list = cs.findAllBooksByCategory(cid, 5, page);
			int totalPages = cs.getTotalPagesByCategory(cid, 5);
			
			request.setAttribute("page", page);
			request.setAttribute("total_pages", totalPages);
			request.setAttribute("book_list", list);
			
		}

		return mapping.findForward("success");
	}
}