catalogaction.java

网上购物系统struts+spring+hibernate实现

package com.sdi0708.bdifn.bookstore.web.struts.action;

import java.util.List;

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

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.validator.BeanValidatorForm;

import com.sdi0708.bdifn.bookstore.domain.Catalog;
import com.sdi0708.bdifn.bookstore.service.ICatalogService;
import com.sdi0708.bdifn.bookstore.service.util.StringUtils;

/**
 * 类别管理模块的action
 * @author 吴承志
 *
 */
public class CatalogAction extends BaseAction {
	/**
	 * 通过依spring注入一个userService,单例模式的,线程安全
	 */
	private ICatalogService catalogService;
	
	public void setCatalogService(ICatalogService catalogService) {
		this.catalogService = catalogService;
	}
	/**
	 * 找出所有的顶层类别
	 */
	public ActionForward findParentCatalogs(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {
		List<Catalog> catalogs = catalogService.findParentCatalogs();
		request.setAttribute("catalogs", catalogs);
		return mapping.findForward("success");
	}
	/**
	 * 增加一个类别
	 */
	public ActionForward addCatalog(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {
		//在此使用 BeanValidatorForm 配置.
		BeanValidatorForm fForm = (BeanValidatorForm)form;
		Catalog catalog = (Catalog)fForm.getInstance();
		String pid = request.getParameter("parentId");
		Long parentId = null;
		if(!StringUtils.isEmpty(pid)) {
			parentId = Long.valueOf(pid);
		}
		catalogService.addCatalog(catalog, parentId);
		return mapping.findForward("success");
	}
	/**
	 * 准备进行修改
	 */
	public ActionForward preparedModify(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {
		
		Long id = Long.valueOf(request.getParameter("id"));
		Catalog catalog = catalogService.findById(id);
		request.setAttribute("catalog", catalog);
		return mapping.findForward("success");
	}
	/**
	 * 执行修改
	 */
	public ActionForward modifyCatalog(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {

		BeanValidatorForm fForm = (BeanValidatorForm)form;
		Catalog catalog = (Catalog)fForm.getInstance();
		catalogService.modifyCatalod(catalog);
		return mapping.findForward("success");
	}
	
	public ActionForward deleteCatalogById(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {

		Long id = Long.valueOf(request.getParameter("id"));
		catalogService.deleteById(id);
		return mapping.findForward("success");
	}
	
	public ActionForward findLeafCatalogs(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {

		Long id = Long.valueOf(request.getParameter("id"));
		List<Catalog> catalogs = catalogService.findLeafCatalogs(id);
		Catalog pCatalog = catalogService.findById(id);
		
		request.setAttribute("catalogs", catalogs);
		request.setAttribute("pCatalog", pCatalog);
		return mapping.findForward("success");
	}
	/**
	 * 提供于ajax使用
	 */
	public ActionForward ajaxFindLeaf(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {
		Long id = Long.valueOf(request.getParameter("id"));
		List<Catalog> catalogs = catalogService.findLeafCatalogs(id);
		request.setAttribute("catalogs", catalogs);
		return mapping.findForward("success");
	}
	
}