1. 配置文件中：有关客户端是手机还是电脑的判断（GoodsController.java）

 public String initGoods(Model model, HttpSession session, GoodsForm goodsForm, Device device) throws UnsupportedEncodingException

2.网站的错误页面（error.jsp），会返回错误信息，并提示这是一个错误页面

1. <div class="row"><div class="well col-md-5 center login-box"><div class="alert alert-info">${exceptionMessage}</div><form class="form-horizontal" action="${pageContext.request.contextPath}/" method="get"><fieldset><p>这是一个错误页面说明服务器出现了问题，请返回首页重新登录。</p><p class="center col-md-5"><button type="submit" class="btn btn-primary">返回首页</button></p></fieldset></form></div><!--/span--></div

3.缓存管理（ehcache）,例如，网站图片的加载，初次加载时会访问数据库，再次请求则会先去缓存中找，若没有再去数据库中查找

<li><a href="#"><canvas></canvas>
<img src="shop/images/banner1.jpg" /></a></li><div class="grid_1_of_3 grid_1_of_3first images_1_of_3" th:class="${status.count%3==1}?'grid_1_of_3 grid_1_of_3first images_1_of_3':'grid_1_of_3 images_1_of_3'" th:each="goodsInfo,status:${list}">                                                <img alt="商品详细情况" th:src="@{showImage(pictureId=${goodsInfo.pictureId})}" style="height:185px;width:330px;" />

@RequestMapping(value = "showImage", method = RequestMethod.GET)public void showImage(HttpServletResponse response, CommodityForm commodityForm) throws IOException {log.info("取得商品图片");response.setContentType("image/jpg");OutputStream stream = response.getOutputStream();try {stream.write(commodityService.getPicture(commodityForm));stream.flush();} catch (Exception e) {log.info(commodityForm.getPictureId() + ",该图片不存在，需要补充！");} finally {stream.close();}}

4.首页模糊查询

• userBar.html中添加一个form表单

• <form action="jiansuo" th:object="${guestForm}" method="post"><li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</li><li><span><input name="commodityName" type="text" /></span></li><li>&nbsp;&nbsp;&nbsp;&nbsp;</li><li><span><input name="jiansuo" type="submit" value="搜索" /></span></li>
  </form>

• controller与service中

•  @RequestMapping(value = "jiansuo", method = RequestMethod.POST,params="jiansuo")public String jiansuoGoods(Model model, HttpSession session, GoodsForm goodsForm, Device device) throws UnsupportedEncodingException {log.info("商品列表初始化");model.addAttribute("goodsForm", goodsForm);model.addAttribute("list", goodsService.jiansuoGoodsList(goodsForm));return "shop/index";}

public List<GoodsForm> jiansuoGoodsList(GoodsForm frm) {List<GoodsForm> result = queryDao.executeForObjectList("Goods.jiansuoGoodsList", frm);return result;}

• sqlMap中的select

• <select id="jiansuoGoodsList" parameterClass="cn.agriculture.web.form.GoodsForm"resultClass="cn.agriculture.web.form.GoodsForm">SELECT commodity.commodity_id as commodityId,commodity.type as type,supplier.supplier_name as supplierName,brand.brand_name as brandName,commodity.commodity_name as commodityName,commodity.weight as weight,commodity.is_gift as isGift,commodity.specifications as specifications,commodity.unit as unit,commodity.benchmark_price as benchmarkPrice,commodity.guide_price as guidePrice,commodity.retail_price as retailPrice,commodity.competition_level as competitionLevel,commodity.note as note,commodity.update_time as updateTime,commodity.update_user as updateUser,commodity.picture_id as pictureId,stock.stock as stockFROM commodity, supplier, brand, stockWHEREcommodityName like '%$commodityName$%'<!-- commodity.commodity_name like concat('%',#commodityName#,'%') --></select>

  5.将<jsp:include page="/WEB-INF/jsp/shop/userBar.jsp"></jsp:include>改为

  <div th:replace="shop/userBar :: page-user-bar"></div>

  6. 静态方法（static）可以直接调用，只存在于一个固定空间区域，一般算术时使用；

  而非静态方法需要创建对象，每次都调用不同的区域，可再次使用，互不影响，