商城秒杀系统的实现(三)秒杀功能开发及管理后台

其他 2020-02-17 11:16:44 阅读次数: 0

文章目录

数据库设计

  1. 商品表
  2. 秒杀商品表
  3. 订单表
  4. 秒杀订单表

秒杀商品表要单独建立,而不能在商品表里面标记是不是秒杀商品
秒杀活动越来越多就很难维护

商品表

在这里插入图片描述
建立商品表,插入数据

CREATE TABLE `goods` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '商品ID',
  `goods_name` varchar(16) DEFAULT NULL COMMENT '商品名称',
  `goods_title` varchar(64) DEFAULT NULL COMMENT '商品标题',
  `goods_img` varchar(64) DEFAULT NULL COMMENT '商品的图片',
  `goods_detail` longtext COMMENT '商品的详情介绍',
  `goods_price` decimal(10,2) DEFAULT '0.00' COMMENT '商品单价',
  `goods_stock` int(11) DEFAULT '0' COMMENT '商品库存，-1表示没有限制',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8mb4;

还有对应的商品信息:

public class GoodsVo extends Goods{

	private Double miaoshaPrice;
	private Integer stockCount;
	private Date startDate;
	private Date endDate;

}

public class Goods {
	private Long id;
	private String goodsName;
	private String goodsTitle;
	private String goodsImg;
	private String goodsDetail;
	private Double goodsPrice;
	private Integer goodsStock;
}

INSERT INTO `goods` 
VALUES 
(1,'iphoneX','Apple iPhone X (A1865) 64GB 银色 移动联通电信4G手机','/img/iphonex.png','Apple iPhone X (A1865) 64GB 银色 移动联通电信4G手机',8765.00,10000),
(2,'华为Meta9','华为 Mate 9 4GB+32GB版 月光银 移动联通电信4G手机 双卡双待','/img/meta10.png','华为 Mate 9 4GB+32GB版 月光银 移动联通电信4G手机 双卡双待',3212.00,-1);

秒杀商品表

在这里插入图片描述
建立秒杀商品表,插入数据

CREATE TABLE `miaosha_goods` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '秒杀的商品表',
  `goods_id` bigint(20) DEFAULT NULL COMMENT '商品Id',
  `miaosha_price` decimal(10,2) DEFAULT '0.00' COMMENT '秒杀价',
  `stock_count` int(11) DEFAULT NULL COMMENT '库存数量',
  `start_date` datetime DEFAULT NULL COMMENT '秒杀开始时间',
  `end_date` datetime DEFAULT NULL COMMENT '秒杀结束时间',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8mb4;

public class MiaoshaGoods {
	private Long id;
	private Long goodsId;
	private Integer stockCount;
	private Date startDate;
	private Date endDate;
}

INSERT INTO `miaosha_goods` 
VALUES 
(1,1,0.01,4,'2017-11-05 15:18:00','2017-11-13 14:00:18'),
(2,2,0.01,9,'2017-11-12 14:00:14','2017-11-13 14:00:24');

订单表

在这里插入图片描述

public class OrderInfo {
	private Long id;
	private Long userId;
	private Long goodsId;
	private Long  deliveryAddrId;
	private String goodsName;
	private Integer goodsCount;
	private Double goodsPrice;
	private Integer orderChannel;
	private Integer status;
	private Date createDate;
	private Date payDate;
}

CREATE TABLE `order_info` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `user_id` bigint(20) DEFAULT NULL COMMENT '用户ID',
  `goods_id` bigint(20) DEFAULT NULL COMMENT '商品ID',
  `delivery_addr_id` bigint(20) DEFAULT NULL COMMENT '收获地址ID',
  `goods_name` varchar(16) DEFAULT NULL COMMENT '冗余过来的商品名称',
  `goods_count` int(11) DEFAULT '0' COMMENT '商品数量',
  `goods_price` decimal(10,2) DEFAULT '0.00' COMMENT '商品单价',
  `order_channel` tinyint(4) DEFAULT '0' COMMENT '1pc，2android，3ios',
  `status` tinyint(4) DEFAULT '0' COMMENT '订单状态，0新建未支付，1已支付，2已发货，3已收货，4已退款，5已完成',
  `create_date` datetime DEFAULT NULL COMMENT '订单的创建时间',
  `pay_date` datetime DEFAULT NULL COMMENT '支付时间',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=12 DEFAULT CHARSET=utf8mb4;

秒杀订单表

在这里插入图片描述

public class MiaoshaOrder {
	private Long id;
	private Long userId;
	private Long  orderId;
	private Long goodsId;
}

CREATE TABLE `miaosha_order` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `user_id` bigint(20) DEFAULT NULL COMMENT '用户ID',
  `order_id` bigint(20) DEFAULT NULL COMMENT '订单ID',
  `goods_id` bigint(20) DEFAULT NULL COMMENT '商品ID',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8mb4;

页面设计

商品列表页

<div class="panel panel-default">
  <div class="panel-heading">秒杀商品列表</div>
  <table class="table" id="goodslist">
  	<tr><td>商品名称</td><td>商品图片</td><td>商品原价</td><td>秒杀价</td><td>库存数量</td><td>详情</td></tr>
  	<tr  th:each="goods,goodsStat : ${goodsList}">  
                <td th:text="${goods.goodsName}"></td>  
                <td ><img th:src="@{${goods.goodsImg}}" width="100" height="100" /></td>  
                <td th:text="${goods.goodsPrice}"></td>  
                <td th:text="${goods.miaoshaPrice}"></td>  
                <td th:text="${goods.stockCount}"></td>
                <td><a th:href="'/goods/to_detail/'+${goods.id}">详情</a></td>  
     </tr>  
  </table>
</div>

商品详情页

<div class="panel panel-default">
  <div class="panel-heading">秒杀商品详情</div>
  <div class="panel-body">
  	<span> 您还没有登录，请登陆后再操作<br/></span>
  	<span>没有收货地址的提示。。。</span>
  </div>
  <table class="table" id="goodslist">
  	<tr>  
        <td>商品名称</td>  
        <td colspan="3"></td> 
     </tr>  
     <tr>  
        <td>商品图片</td>  
        <td colspan="3"><img th:src="" width="200" height="200" /></td>  
     </tr>
     <tr>  
        <td>秒杀开始时间</td>  
        <td ></td>
        <td id="miaoshaTip">	
        	<span>秒杀已经结束</span>
        </td>
        <td>
        	<form id="miaoshaForm" method="post" action="/miaosha/do_miaosha">
        		<button class="btn btn-primary btn-block" type="submit" id="buyButton">立即秒杀</button>
        		<input type="hidden" name="goodsId" th:value="${goods.id}" />
        	</form>
        </td>
     </tr>
     <tr>  
        <td>商品原价</td>  
        <td colspan="3"></td>  
     </tr>
      <tr>  
        <td>秒杀价</td>  
        <td colspan="3"></td>  
     </tr>
     <tr>  
        <td>库存数量</td>  
        <td colspan="3"></td>  
     </tr>
  </table>
</div>

订单详情页

<div class="panel panel-default">
  <div class="panel-heading">秒杀商品详情</div>
  <div class="panel-body">
  	<span> 您还没有登录，请登陆后再操作<br/></span>
  	<span>没有收货地址的提示。。。</span>
  </div>
  <table class="table" id="goodslist">
  	<tr>  
        <td>商品名称</td>  
        <td colspan="3"></td> 
     </tr>  
     <tr>  
        <td>商品图片</td>  
        <td colspan="3"><img th:src="" width="200" height="200" /></td>  
     </tr>
     <tr>  
        <td>秒杀开始时间</td>  
        <td ></td>
        <td id="miaoshaTip">	
        	<span>秒杀已经结束</span>
        </td>
        <td>
        	<form id="miaoshaForm" method="post" action="/miaosha/do_miaosha">
        		<button class="btn btn-primary btn-block" type="submit" id="buyButton">立即秒杀</button>
        		<input type="hidden" name="goodsId" th:value="${goods.id}" />
        	</form>
        </td>
     </tr>
     <tr>  
        <td>商品原价</td>  
        <td colspan="3"></td>  
     </tr>
      <tr>  
        <td>秒杀价</td>  
        <td colspan="3"></td>  
     </tr>
     <tr>  
        <td>库存数量</td>  
        <td colspan="3"></td>  
     </tr>
  </table>
</div>

管理后台

domain中

创建这几个:

  1. Goods
  2. MiaoshaGoods
  3. OrderInfo
  4. MiaoshaOrder

在这里插入图片描述

Vo中

新创建这两个:
1. 12:4

Dao中

new 这几个class
在这里插入图片描述

goodsDao{
  @Update("update miaosha_goods set stock_count = stock_count -1 where goods_id = #{id}")
  reduceStock(good)
}

orderDao{
  @select("slect dddd")
  getMiaoshaOrderByUserIdGoodId();
  
}

Service中

在这里插入图片描述

//GoodService
public GoodsVo getGoodsVoByGoodsId(long goodsId){
  return goodsDao.getGoodsVoByGoodsId(goodsId);
}

@Service
public class OrderService {
	
	@Autowired
	OrderDao orderDao;
	
	public MiaoshaOrder getMiaoshaOrderByUserIdGoodsId(long userId, long goodsId) {
		return orderDao.getMiaoshaOrderByUserIdGoodsId(userId, goodsId);
	}

	@Transactional
	public OrderInfo createOrder(MiaoshaUser user, GoodsVo goods) {
		OrderInfo orderInfo = new OrderInfo();
		orderInfo.setCreateDate(new Date());
		orderInfo.setDeliveryAddrId(0L);
		orderInfo.setGoodsCount(1);
		orderInfo.setGoodsId(goods.getId());
		orderInfo.setGoodsName(goods.getGoodsName());
		orderInfo.setGoodsPrice(goods.getMiaoshaPrice());
		orderInfo.setOrderChannel(1);
		orderInfo.setStatus(0);
		orderInfo.setUserId(user.getId());
		long orderId = orderDao.insert(orderInfo);
		MiaoshaOrder miaoshaOrder = new MiaoshaOrder();
		miaoshaOrder.setGoodsId(goods.getId());
		miaoshaOrder.setOrderId(orderId);
		miaoshaOrder.setUserId(user.getId());
		orderDao.insertMiaoshaOrder(miaoshaOrder);
		return orderInfo;
	}
	
}


miaoshaService{
	goodsservice;
  orderService;
  @transanctional
  public OrderInfo miaosha(MiaoshaUser user,GoodVo goods){
    //减库存 下订单 写入秒杀订单
    goodService.reduceStock(goods);
    return orderService.createOrder(user,goods);
  }
}

controller

   @RequestMapping("/to_detail/{goodsId}")
    public String detail(Model model,MiaoshaUser user,
    		@PathVariable("goodsId")long goodsId) {
    	model.addAttribute("user", user);
    	
    	GoodsVo goods = goodsService.getGoodsVoByGoodsId(goodsId);
    	model.addAttribute("goods", goods);
    	
    	long startAt = goods.getStartDate().getTime();
    	long endAt = goods.getEndDate().getTime();
    	long now = System.currentTimeMillis();
    	
    	int miaoshaStatus = 0;
    	int remainSeconds = 0;
    	if(now < startAt ) {//秒杀还没开始，倒计时
    		miaoshaStatus = 0;
    		remainSeconds = (int)((startAt - now )/1000);
    	}else if(now > endAt){//秒杀已经结束
    		miaoshaStatus = 2;
    		remainSeconds = -1;
    	}else {//秒杀进行中
    		miaoshaStatus = 1;
    		remainSeconds = 0;
    	}
    	model.addAttribute("miaoshaStatus", miaoshaStatus);
    	model.addAttribute("remainSeconds", remainSeconds);
        return "goods_detail";
    }

 @RequestMapping("/do_miaosha")
    public String list(Model model,MiaoshaUser user,
    		@RequestParam("goodsId")long goodsId) {
    	model.addAttribute("user", user);
    	if(user == null) {
    		return "login";
    	}
    	//判断库存
    	GoodsVo goods = goodsService.getGoodsVoByGoodsId(goodsId);
    	int stock = goods.getStockCount();
    	if(stock <= 0) {
    		model.addAttribute("errmsg", CodeMsg.MIAO_SHA_OVER.getMsg());
    		return "miaosha_fail";
    	}
    	//判断是否已经秒杀到了
    	MiaoshaOrder order = orderService.getMiaoshaOrderByUserIdGoodsId(user.getId(), goodsId);
    	if(order != null) {
    		model.addAttribute("errmsg", CodeMsg.REPEATE_MIAOSHA.getMsg());
    		return "miaosha_fail";
    	}
    	//减库存 下订单 写入秒杀订单
    	OrderInfo orderInfo = miaoshaService.miaosha(user, goods);
        
    	model.addAttribute("orderInfo", orderInfo);
    	model.addAttribute("goods", goods);
        return "order_detail";
    }
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