day课程v1 3电商系统开发第19章秒杀解决方案

目标1：能够说出秒杀实现思路目标2：实现秒杀频道首页功能目标4：实现秒杀下单功能价、商品、介绍等信息当库存为0或不在活动期范围内时无法秒杀。 当用户秒杀下单5分钟内未支付，取消预订单，调用 Tb_seckill_goodsTb_seckill_order(webpinyougou-seckill-web(war)pom.xmlcart_web工程(需添加单点登录和权限控制)pinyougou-seckill-interface，Tomcat7插件运行端9109web.xml、spring配置文件参见cart_web工程。运用《程序员代码》生成代码，拷入工秒杀频道首页，显示正在秒杀的商品（已经开始，未结束的商品publicList<TbSeckillGoods>publicList<TbSeckillGoods>findList() ampleexample=new Criteriacriteria=example.createCriteria();Criteriacriteria=example.createCriteria();criteria.andStockCountGreaterThan(0);//0return} publicList<TbSeckillGoods>return}pinyougou-seckill-web return} }}<script<scripttype="text/javascript"src="plugins/angularjs/angular.min.js"><script<scripttype="text/javascript"src="js/base.js"><scripttype="text/javascript"src="js/service/seckillGoodsService.js"><scriptsrc="js/controller/seckillGoodsController.js"><li<liclass="seckill-item"ng-repeat="pojoin<div<imgsrc="{{pojo.smallPic}}"width="290px"height="290px"<div<divclass='price'><bclass='sec-price'>￥{{pojo.costPrice}}</b><b<div{{((}}%</<div<divclass='sui-progressprogress-danger'><span{{((pojo.num-pojo.stockCount)/pojo.num*100).toFixed(0)}}%;'<aclass='sui-btnbtn-blockbtn-buyhref='seckill-item.html#?id={{pojo.id}}'privateprivate te publicList<TbSeckillGoods>findList()List<TbSeckillGoods>seckillGoodsList= if(seckillGoodsList==null||seckillGoodsList.size()==0){TbSeckillGood example=newTbSeckillGood ampleCriteriacriteriacriteria.andStockCountGreaterThan(0);//剩余库存大于0seckillGoodsList=seckillGoodsMapper.selectByExample(example);for(TbSeckillGoods}}return}*根据ID获取实体(从缓存 publicTbSeckillGoodsfindOneFromRedis(LongpublicTbSeckillGoodsfindOneFromRedis(Longid)return } publicTbSeckillGoodsfindOneFromRedis(Longreturn}privateSeckillGoodsServicepinyougou-seckill-webreturn }pinyougou-seckill-web的 ，引入$location服$scope.entity=}}<script<scripttype="text/javascript"src="plugins/angularjs/angular.min.js"><scripttype="text/javascript"src="js/base.js"><scripttype="text/javascript"src="js/service/seckillGoodsService.js"><scriptsrc="js/controller/seckillGoodsController.js"><body<bodyng-app="pinyougou"ng-controller="seckillGoodsController"ng- width="400px"height="400px"/></span><<divclass="fl <<divclass="intro-取消执行用cancel方法先现在先做一个简单的例子：10秒倒计时，首先引入$interval $scope.second$scope.second=time=$scope.second=$scope.second-}$scope.entity=allsecondMath.floor(newDate($scope.entity.endTime).getTime()-(newDate().getTime()))/1000);//总秒数time=if(allsecondallsecond=allsecond-}}} 天小时分钟秒格式XXX天10:22:33vardaysMath.floorallsecond/(60*60*24));//varhoursMath.floor(allsecond-days*60*60*24)/(60*60)varminutes=Math.floor((allsecond-days*60*60*24- varvarseconds=allseconddays*60*60*24hours*60*60minutes*60;vartimeString=days+"}return}<span<spanclass="overtime"0或不在活动期@param@parampublicpublicvoidsubmitOrder(LongseckillId,Stringprivate te privateIdWorkerpublicvoidsubmitOrder(LongseckillId,StringuserId)TbSeckillGoodsseckillGoods=(TbSeckillGoods) thrownewRuntimeException("商品不存在}thrownewRuntimeException("商品已抢购一空} , }longorderId=TbSeckillOrderseckillOrder=newTbSeckillOrder();seckillOrder.setCreateTime(newDate());seckillOrder.setUserId(userId);//ID } publicResultsubmitOrder(LongseckillId){StringuserId=returnnewResult(false,"用户未登录");}tryreturnnewResult(true提交成功}catch(RuntimeException{returnnewResult(false,}catch(Exception{;returnnewResult(false提交失败}return}}}}<a<ang-click="submitOrder()"target="_blank"class="sui-btnbtn-danger @parampublicTbSeckillOrdersearchOrderFromRedisByUserId(StringpublicTbSeckillOrdersearchOrderFromRedisByUserId(StringuserId)return }@author publicclassPayControllerprivateWeixinPayServiceprivateSeckillOrderService publicMap//到redisTbSeckillOrderseckillOrder=TbSeckillOrderseckillOrder=longfen=(long)(seckillOrder.getMoney().doubleValue()*100);//金额（分returnreturnnew}}}将pinyougou-cart-web工程的 qrious.min.js拷贝 @param@parampublicpublicvoidsaveOrderFromRedisToDb(StringuserId,LongorderId,StringpublicvoidsaveOrderFromRedisToDb(StringuserId,LongorderId,StringtransactionId){//根据用户IDTbSeckillOrderseckillOrder=(TbSeckillOrder) thrownewRuntimeException("订单不存在}hrownewRuntimeException("订单不相符");} seckillOrder.setPayTime(newDate());//支付时间 te.boundHashOps("seckillOrder").delete(userId);//从redis}@param publicResultqueryPayStatus(Stringout_trade_no)Mapmap=weixinPayService.queryPayStatusWhile(out_trade_no);returnnewResult(false,returnnewResult(truereturnnewResult(false,}}}@param@parampublicvoiddeleteOrderFromRedis(StringuserId,LongpublicvoiddeleteOrderFromRedis(StringuserId,Long{TbSeckillOrderseckillOrder=(TbSeckillOrder) if(seckillOrder!=null&&seckillOrder.getId().longValue()==orderId.longValue()){redisTem TbSeckillGoods );收seckillGoods=if(seckillGoods.getEndTime().getTime()>new }}}@param publicResultqueryPayStatus(Stringout_trade_no)Mapmap=weixinPayService.queryPayStatusWhile(out_trade_no);re