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2018-12-17 实现秒杀功能-商品详情页

2018-12-17 实现秒杀功能-商品详情页

作者: 培根好吃 | 来源:发表于2018-12-17 13:24 被阅读0次

    1.goods_detail.html

    <!DOCTYPE HTML>
    <html xmlns:th="http://www.thymeleaf.org">
    <head>
        <title>商品详情</title>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
        <!-- jquery -->
        <script type="text/javascript" th:src="@{/js/jquery.min.js}"></script>
        <!-- bootstrap -->
        <link rel="stylesheet" type="text/css" th:href="@{/bootstrap/css/bootstrap.min.css}" />
        <script type="text/javascript" th:src="@{/bootstrap/js/bootstrap.min.js}"></script>
        <!-- jquery-validator -->
        <script type="text/javascript" th:src="@{/jquery-validation/jquery.validate.min.js}"></script>
        <script type="text/javascript" th:src="@{/jquery-validation/localization/messages_zh.min.js}"></script>
        <!-- layer -->
        <script type="text/javascript" th:src="@{/layer/layer.js}"></script>
        <!-- md5.js -->
        <script type="text/javascript" th:src="@{/js/md5.min.js}"></script>
        <!-- common.js -->
        <script type="text/javascript" th:src="@{/js/common.js}"></script>
    </head>
    <body>
    
    <div class="panel panel-default">
      <div class="panel-heading">秒杀商品详情</div>
      <div class="panel-body">
        <!-- <span th:if="${user eq null}"> 您还没有登录,请登陆后再操作<br/></span> -->
        <span th:if="${user eq null}">您还没有登录,请登录后再操作</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" th:text="${goods.goodsName}"></td> 
         </tr>  
         <tr>  
            <td>商品图片</td>  
            <td colspan="3"><img th:src="@{${goods.goodsImg}}" width="200" height="200" /></td>  
         </tr>
         <tr>  
            <td>秒杀开始时间</td>  
            <td th:text="${#dates.format(goods.startDate, 'yyyy-MM-dd HH:mm:ss')}"></td>
            <td id="miaoshaTip">    
                <input type="hidden" id="remainSeconds" th:value="${remainSeconds}" /> 
                <span th:if="${miaoshaStatus eq 0}">秒杀倒计时:<span id="countDown" th:text="${remainSeconds}"></span>秒</span>
                <span th:if="${miaoshaStatus eq 1}">秒杀进行中</span>
                <span th:if="${miaoshaStatus eq 2}">秒杀已结束</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="${goods.id}" />
                </form>
            </td>
         </tr>
         <tr>  
            <td>商品原价</td>  
            <td colspan="3" th:text="${goods.goodsPrice}"></td>  
         </tr>
          <tr>  
            <td>秒杀价</td>  
            <td colspan="3" th:text="${goods.miaoshaPrice}"></td>  
         </tr>
         <tr>  
            <td>库存数量</td>  
            <td colspan="3" th:text="${goods.stockCount}"></td>  
         </tr>
      </table>
    </div>
    </body>
    <script>
    $(function(){
        countDown();
    });
    function countDown(){
        var remainSeconds=$("#remainSeconds").val();
        var timeout;
        if(remainSeconds>0){ //秒杀还没开始,倒计时
            $("#buyButton").attr("disabled",true);
            timeout = setTimeout(function(){
                $("#countDown").text(remainSeconds - 1);
                $("#remainSeconds").val(remainSeconds - 1);
                countDown();
            },1000); //1秒钟之后开始定时
        }else if (remainSeconds==0){ //秒杀进行时
            $("#buyButton").attr("disabled",false);
            if(timeout){
                clearTimeout(timeout);
            }
            $("#miaoshaTip").html("秒杀进行中");//更改当前行 <span></span>中间的字
        }else{//秒杀已经结束
            $("#buyButton").attr("disabled",true);
            $("#miaoshaTip").html("秒杀已经结束");
        }
    }
    /* $(function(){
        countDown();
    });
    
    function countDown(){
        var remainSeconds = $("#remainSeconds").val();
        var timeout;
        if(remainSeconds > 0){//秒杀还没开始,倒计时
            $("#buyButton").attr("disabled", true);
            timeout = setTimeout(function(){
                $("#countDown").text(remainSeconds - 1);
                $("#remainSeconds").val(remainSeconds - 1);
                countDown();
            },1000);
        }else if(remainSeconds == 0){//秒杀进行中
            $("#buyButton").attr("disabled", false);
            if(timeout){
                clearTimeout(timeout);
            }
            $("#miaoshaTip").html("秒杀进行中");
        }else{//秒杀已经结束
            $("#buyButton").attr("disabled", true);
            $("#miaoshaTip").html("秒杀已经结束");
        }
    } */
    </script>
    </html>
    

    1.controller层 根据跳转页面显示具体的商品详情内容

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

    3. 增加 service层 和 dao层

    //service层 
    public GoodsVo getGoodsVoByGoodsId(long goodsId) {
            return goodsDao.getGoodsVoByGoodsId(goodsId);
        }
    //dao层
    @Select("select g.*,mg.stock_count,mg.start_date,mg.end_date,mg.miaosha_price from miaosha_goods mg left join goods g on mg.goods_id=g.id where goods_id =#{goodsId}")
        public GoodsVo getGoodsVoByGoodsId(@Param("goodsId")long goodsId);
    

    1.goods_detail.html

    
    

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          本文标题:2018-12-17 实现秒杀功能-商品详情页

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