fishbrowseaction.java

JPetStore源码

package org.springframework.samples.jpetstore.web.struts;

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.springframework.beans.support.PagedListHolder;
import org.springframework.samples.jpetstore.domain.Fish;

/**
 * 堦棗夋柺偺傾僋僔儑儞
 * 
 * @author 焨寷曮
 */
public class FishBrowseAction extends BaseAction {

	/**
	 * 弶婜壔張棟
	 * 
	 * @param mapping
	 *            傾僋僔儑儞偺攝抲忣曬
	 * @param form
	 *            Servlet忣曬
	 * @param request
	 *            HTTP儕僋僄僗僩
	 * @param response
	 *            HTTP儗僗億儞僗
	 * @throws Exception
	 *             堎忢張棟
	 * @return ActionForward 揮憲偟偨儁乕僕偺儘僕僢僋柤徧
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {

		// productId傪庢摼偡傞
		String productId = request.getParameter("productId");

		// 怴婯夋柺偐傜偺敾掕梡
		String categoryId;

		// 乽嶍彍乿儃僞儞傪墴壓偡傞
		if ("".equals(productId) || productId != null) {

			// FormBean偺弶婜壔
			FishForm fishForm = (FishForm) form;

			// fish偺弶婜壔
			Fish fish = fishForm.getFish();

			// Category偺抣傪僙僢僩偡傞
			fish.setCategory(Fish.CATEGORY_ID);

			// ProductId偺抣傪僙僢僩偡傞
			fish.setProductId(productId);

			// SQL暥傪峴偆
			getPetStore().deleteFish(fish);

			// 堦棗偺僨乕僞傪庢摼偡傞
			PagedListHolder productList = new PagedListHolder(getPetStore()
					.getFish(Fish.CATEGORY_ID));

			// 昞帵僨乕僞審悢傪僙僢僩偡傞
			productList.setPageSize(4);

			// request偵僨乕僞傪僙僢僩偡傞
			request.getSession().setAttribute("searchFishList", productList);
			request.setAttribute("productList", productList);

			// categoryId抣傪僙僢僩偡傞
			categoryId = "fishBrowse";
			request.getSession().setAttribute("categoryId", categoryId);

			// 堦棗夋柺偵挼傇
			return mapping.findForward("success");
		}

		// 弶婜張棟偺敾掕
		if ("notFishBrowse".equals(request.getParameter("categoryId"))) {
			categoryId = request.getParameter("categoryId");
		} else {
			categoryId = (String) request.getSession().getAttribute(
					"categoryId");
		}

		// 儁乕僕儕儞僋傪墴偡
		if ("fishBrowse".equals(categoryId)) {
			String page = request.getParameter("page");

			// 堦棗偺僨乕僞傪庢摼偡傞
			PagedListHolder productList = (PagedListHolder) request
					.getSession().getAttribute("searchFishList");

			// 慜暸傪墴壓偡傞帪
			if ("next".equals(page)) {
				productList.nextPage();
			}

			// 屻暸傪墴壓偡傞帪
			else if ("previous".equals(page)) {
				productList.previousPage();
			}

			// 堦棗僨乕僞傪僙僢僩偡傞
			request.setAttribute("productList", productList);
		} else {

			// 堦棗偺僨乕僞傪庢摼偡傞
			PagedListHolder productList = new PagedListHolder(getPetStore()
					.getFish(Fish.CATEGORY_ID));

			// 僨乕僞偺昞帵忦悢傪僙僢僩偡傞
			productList.setPageSize(4);

			// 堦棗僨乕僞傪僙僢僩偡傞
			request.getSession().setAttribute("searchFishList", productList);
			request.setAttribute("productList", productList);

			// 堦棗夋柺偵擖偭偨偺偱丄抣傪曄峏偡傞
			categoryId = "fishBrowse";
			request.getSession().setAttribute("categoryId", categoryId);
		}

		// 堦棗夋柺傊挼傇
		return mapping.findForward("success");
	}
}