网上购物车系统

package com.webtier; 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 com.domain.GoodsForm; import org.apache.struts.action.Action; import com.dao.GoodsDao; import java.util.List; import com.dao.SmallTypeDao; import com.tool.Chinese; import javax.servlet.http.HttpSession; import java.io.UnsupportedEncodingException; //商品的Action public class GoodsAction extends Action { private int action; private GoodsDao dao = null; private SmallTypeDao small = null; private HttpSession session = null; public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws UnsupportedEncodingException { request.setCharacterEncoding("gb2312"); this.dao = new GoodsDao(); small = new SmallTypeDao(); action = Integer.parseInt(request.getParameter("action")); session = request.getSession(); switch (action) { case 0: { return goodSelect(mapping, form, request, response); //全部查询小类别信息 } case 1: { return goodForward(mapping, form, request, response); //转向页面 } case 2: { return selectSmallName(mapping, form, request, response); //查询小类别的名称 } case 3: { return saveGoods(mapping, form, request, response); //把从页面中信息存储在bean中 } case 4: { return insertGoods(mapping, form, request, response); //添加商品的信息 } case 5: { return selectOneGoods(mapping, form, request, response); //查看商品的详细信息 } case 6: { return deleteGoods(mapping, form, request, response); //删除商品信息 } case 7: { return goodSelectMark(mapping, form, request, response); // 按特价商品信息查询 } case 8: { return goodSelectSmall(mapping, form, request, response); //按小类别商品信息查询 } case 9: { return goodSelectBig(mapping, form, request, response); //按大类别商品信息查询 } case 10: { return managerFreePirceForward(mapping, form, request, response); //转向特价商品页面 } case 11: { return managerFreePirce(mapping, form, request, response); //设置特价价格 } case 12: { return goodSelectBigHead(mapping, form, request, response); //按大类别商品信息查询商品和商品小类别的名称 } case 13: { return goodSelectSmallHead(mapping, form, request, response); //按小类别商品信息查询商品和商品小类别的名称 } case 14: { return goodSelectNewHead(mapping, form, request, response); //新品查询 } case 15: { return goodSelectFreeHead(mapping, form, request, response); //特价商品 } case 16: { return goodSelectOneHead(mapping, form, request, response); //前台单独查询商品的信息 } } GoodsForm goodsForm = (GoodsForm) form; throw new java.lang.UnsupportedOperationException( "Method $execute() not yet implemented."); } // 前台单独查询商品的信息 public ActionForward goodSelectOneHead(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { request.setAttribute("form",dao.selectOneGoods(Integer.valueOf(request.getParameter("id")))); return mapping.findForward("goodSelectOneHead"); } //特价商品 public ActionForward goodSelectFreeHead(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { List list = null; String mark = request.getParameter("mark"); list = dao.selectMark(Integer.valueOf(mark)); int pageNumber = list.size(); //计算出有多少条记录 int maxPage = pageNumber; //计算有多少页数 String number = request.getParameter("i"); if (maxPage % 4 == 0) { maxPage = maxPage / 4; } else { maxPage = maxPage / 4 + 1; } if (number == null) { number = "0"; } request.setAttribute("number", String.valueOf(number)); request.setAttribute("maxPage", String.valueOf(maxPage)); request.setAttribute("pageNumber", String.valueOf(pageNumber)); request.setAttribute("list", list); return mapping.findForward("goodSelectFreeHead"); } //新品查询 public ActionForward goodSelectNewHead(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { List list = null; String mark = request.getParameter("mark"); list = dao.selectMark(Integer.valueOf(mark)); request.setAttribute("list", list); return mapping.findForward("goodSelectNewHead"); } //按小类别商品信息查询商品和商品小类别的名称 public ActionForward goodSelectSmallHead(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { List list = null; list = dao.selectSmall(Integer.valueOf(request.getParameter("small"))); int pageNumber = list.size(); //计算出有多少条记录 int maxPage = pageNumber; //计算有多少页数 String number = request.getParameter("i"); if (maxPage % 4 == 0) { maxPage = maxPage / 4; } else { maxPage = maxPage / 4 + 1; } if (number == null) { number = "0"; } request.setAttribute("number", String.valueOf(number)); request.setAttribute("maxPage", String.valueOf(maxPage)); request.setAttribute("pageNumber", String.valueOf(pageNumber)); request.setAttribute("list", list); request.setAttribute("smallList", small.selectOneBigId(Integer.valueOf(request. getParameter("big")))); return mapping.findForward("goodSelectSmallHead"); } //按大类别商品信息查询商品和商品小类别的名称 public ActionForward goodSelectBigHead(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { List list = null; list = dao.selectBig(Integer.valueOf(request.getParameter("big"))); int pageNumber = list.size(); //计算出有多少条记录 int maxPage = pageNumber; //计算有多少页数 String number = request.getParameter("i"); if (maxPage % 4 == 0) { maxPage = maxPage / 4; } else { maxPage = maxPage / 4 + 1; } if (number == null) { number = "0"; } request.setAttribute("number", String.valueOf(number)); request.setAttribute("maxPage", String.valueOf(maxPage)); request.setAttribute("pageNumber", String.valueOf(pageNumber)); request.setAttribute("list", list); request.setAttribute("smallList", small.selectOneBigId(Integer.valueOf(request. getParameter("big")))); return mapping.findForward("goodSelectBigHead"); } //设置特价价格 public ActionForward managerFreePirce(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { GoodsFor