javaweb商城实战学习案列.zip

package com.javaweb.servlet; import java.io.File; import java.io.IOException; import java.util.List; import java.util.UUID; import javax.servlet.ServletException; import javax.servlet.annotation.MultipartConfig; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.Part; import org.apache.commons.beanutils.BeanUtils; import com.javaweb.dao.GoodsDao; import com.javaweb.model.Goods; import com.javaweb.model.Page; /** * Servlet implementation class GoodsServlet */ @WebServlet("/GoodsServlet") @MultipartConfig public class GoodsServlet extends BaseServlet { /** * */ private static final long serialVersionUID = 1L; GoodsDao goodsDao=new GoodsDao(); private void findById(HttpServletRequest request, HttpServletResponse response) { int id=Integer.parseInt(request.getParameter("id")); try { Goods g= goodsDao.findById(id); request.setAttribute("g", g); request.getRequestDispatcher("/goods_edit.jsp").forward(request, response); } catch (Exception e) { e.printStackTrace(); } } private void findByPage(HttpServletRequest request, HttpServletResponse response) { int type = 0; if(request.getParameter("type") != null) { type=Integer.parseInt(request.getParameter("type") ) ; } int pageNumber = 1; if(request.getParameter("pageNumber") != null) { pageNumber=Integer.parseInt(request.getParameter("pageNumber") ) ; } if(pageNumber<=0) pageNumber=1; int pageSize=5; try { List<Goods> glist=goodsDao.findByTypeID(type,pageNumber,pageSize); int totalCount=goodsDao.getCountByTypeID(type); Page<Goods> p=new Page<Goods>(pageNumber,pageSize, totalCount); p.setList(glist); request.setAttribute("p", p); request.getRequestDispatcher("/goods_list_page.jsp").forward(request, response); } catch (Exception e) { e.printStackTrace(); } } private void delete(HttpServletRequest request, HttpServletResponse response) { // TODO Auto-generated method stub int id=Integer.parseInt(request.getParameter("id")); try { goodsDao.delete(id); response.sendRedirect("GoodsServlet?m=find"); } catch (Exception e) { e.printStackTrace(); } } private void update(HttpServletRequest request, HttpServletResponse response) { // TODO Auto-generated method stub Goods goods = new Goods(); try { BeanUtils.populate(goods,request.getParameterMap()); goodsDao.update(goods); response.sendRedirect("GoodsServlet?m=find"); } catch (Exception e) { e.printStackTrace(); } } private void find(HttpServletRequest request, HttpServletResponse response) { // TODO Auto-generated method stub int type = 0;//推荐类型 if(request.getParameter("type") != null) { type=Integer.parseInt(request.getParameter("type") ) ; } try { List<Goods> glist=goodsDao.findByTypeID(type); request.setAttribute("glist", glist); request.getRequestDispatcher("/goods_list.jsp").forward(request, response); } catch (Exception e) { e.printStackTrace(); } } private void add(HttpServletRequest request, HttpServletResponse response) { Goods goods = new Goods(); try { BeanUtils.populate(goods,request.getParameterMap()); goodsDao.insert(goods); response.sendRedirect("GoodsServlet?m=find"); } catch (Exception e) { e.printStackTrace(); } } private void upload(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { String name=request.getParameter("name"); Part part = request.getPart("photo"); String realFileName = part.getSubmittedFileName(); String ext = realFileName.substring( realFileName.lastIndexOf("."), realFileName.length()); String fileName = UUID.randomUUID().toString() + ext; String path = this.getServletContext().getRealPath("/upload"); System.out.println(name+" | "+fileName); part.write(path+File.separator+fileName); } }