WEB层

前端页面流程
在这里插入图片描述
详情页流程逻辑

Restful接口设计

是一种优雅的URL表述方式，资源的状态和状态转移

在这里插入图片描述

整合SpringMVC框架

在web.xml配置前端控制器，加载配置文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
		 http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
    <!--配置DispatcherServlet-->
    <servlet>
        <servlet-name>seckill-dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!--配置springMVC需要加载的配置文件
            spring-dao.xml, spring-service.xml, spring-web.xml
            Mybatis被整合到spring中，spring被和springmvc已经被整合到了一起
        -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/spring-*.xml</param-value>
        </init-param>        
    </servlet>
    <servlet-mapping>
        <servlet-name>seckill-dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

spring-web.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!--配置springMVC-->
    <!--1:开启spring的注解模式，之后可以使用注解去映射url，方法-->
    <!--2:提供一一列：数据绑定，数字和日期的format-->
    <!--3:xml,json的默认读写-->
    <mvc:annotation-driven/>

    <!--servlet-mapping 映射路径:"/"-->
    <!--1.静态资源的处理-->
    <!--2.允许使用/做整体映射-->
    <mvc:default-servlet-handler/>

    <!--3.配置jsp，显示viewResolver-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
        <property name="prefix" value="/WEB-INF/jsp"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

    <!--4.扫描web相关的bean,放到spring容器-->
    <context:component-scan base-package="org.seckill.web"></context:component-scan>
</beans>

springMVC实现Restful接口

package org.seckill.web;

import org.seckill.dto.Exposer;
import org.seckill.dto.SeckillExecution;
import org.seckill.dto.SeckillResult;
import org.seckill.entity.Seckill;
import org.seckill.enums.SeckillStaEnum;
import org.seckill.exception.RepeatKillException;
import org.seckill.exception.SeckillCloseException;
import org.seckill.service.SeckillService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;

import java.util.Date;
import java.util.List;

@Controller
@RequestMapping("/seckill")//url:/模块/资源/{id}/细分
public class SeckillController {
    private final Logger logger = LoggerFactory.getLogger(this.getClass());
    @Autowired
    private SeckillService seckillService;
    @RequestMapping(value = "/list",method = RequestMethod.GET)
    public String list(Model model){
        //获取列表页
        List<Seckill> list = seckillService.getSeckillList();
        model.addAttribute("list", list);
        //list.jsp + model = ModelAndView
        return "list";
    }

    @RequestMapping(value = "/{seckillId}/detail",method = RequestMethod.GET)
    public String detail(@PathVariable("seckillId") Long seckillId , Model model){
        if(seckillId == null){
            return "redirect:/seckill/list";
        }
        Seckill seckill = seckillService.getById(seckillId);
        if(seckill==null){
            return "forward:/seckill/list";
        }
        model.addAttribute("seckill",seckill);
        return "detail";
    }

    @ResponseBody
    @RequestMapping(value = "/{seckillId}/exposer",
            method = RequestMethod.POST,
            produces = {"application/json;charset=UTF-8"})
    public SeckillResult<Exposer> exposer(Long seckillId){
        SeckillResult<Exposer> result;
        try{
            Exposer exposer = seckillService.exportSeckillUrl(seckillId);
            result = new SeckillResult<Exposer>(true, exposer);
        }catch (Exception e){
            logger.error(e.getMessage(),e);
            result = new SeckillResult<Exposer>(false, e.getMessage());
        }
        return result;
    }

    @RequestMapping(value = "/{seckillId}/{md5}/execution",
            method = RequestMethod.POST,
            produces = {"application/json;charset=UTF-8"})
    @ResponseBody
    public SeckillResult<SeckillExecution> execute(@PathVariable("seckillId") Long seckillId,
                                                   @PathVariable("md5") String md5,
                                                   @CookieValue(value = "killphone",required = false) Long phone){
        if(phone == null){
            return new SeckillResult<SeckillExecution>(false,"未注册");

        }
        SeckillResult<SeckillExecution> result;
        try{
            SeckillExecution execution = seckillService.executeSeckill(seckillId,phone,md5);
            return new SeckillResult<SeckillExecution>(true,execution);
        }catch (RepeatKillException e){
            SeckillExecution execution = new SeckillExecution(seckillId, SeckillStaEnum.REPEAT_KILL);
            return new SeckillResult<SeckillExecution>(false,execution);

        }catch (SeckillCloseException e){
            SeckillExecution execution = new SeckillExecution(seckillId, SeckillStaEnum.END);
            return new SeckillResult<SeckillExecution>(false,execution);
        }catch (Exception e){
            SeckillExecution execution = new SeckillExecution(seckillId, SeckillStaEnum.INNER_ERROR);
            return new SeckillResult<SeckillExecution>(false,execution);
        }
    }

    @RequestMapping(value = "/time/now",method = RequestMethod.GET)
    public SeckillResult<Long> time(){
        Date now = new Date();
        return new SeckillResult<Long>(true,now.getTime());
    }
}

前端

列表页

list.jsp

<%@page contentType="text/html; charset=UTF-8" language="java" %>
<%@include file="common/tag.jsp"%>
<!DOCTYPE html>
<html>
<head>
    <title>秒杀商品列表</title>
    <%@include file="common/head.jsp" %>
</head>
<body>
<div class="container">
    <div class="panel panel-default">
        <div class="panel-heading text-center">
            <h2>秒杀列表</h2>
        </div>
        <div class="panel-body">
            <table class="table table-hover">
                <thead>
                <tr>
                    <th>名称</th>
                    <th>库存</th>
                    <th>开始时间</th>
                    <th>结束时间</th>
                    <th>创建时间</th>
                    <th>详情页</th>
                </tr>
                </thead>
                <tbody>
                <c:forEach items="${list}" var="sk">
                    <tr>
                        <td>${sk.name}</td>
                        <td>${sk.number}</td>
                        <td>
                            <fmt:formatDate value="${sk.startTime}" pattern="yyyy-MM-dd HH:mm:ss" />
                        </td>
                        <td>
                            <fmt:formatDate value="${sk.endTime}" pattern="yyyy-MM-dd HH:mm:ss" />
                        </td>
                        <td>
                            <fmt:formatDate value="${sk.createTime}" pattern="yyyy-MM-dd HH:mm:ss" />
                        </td>
                        <td><a class="btn btn-info" href="/seckill/${sk.seckillId}/detail" target="_blank">详情</a></td>
                    </tr>
                </c:forEach>
                </tbody>
            </table>

        </div>
    </div>
</div>
<!-- jQuery文件。务必在bootstrap.min.js 之前引入 -->
<script src="http://apps.bdimg.com/libs/jquery/2.0.0/jquery.min.js"></script>

<!-- 最新的 Bootstrap 核心 JavaScript 文件 -->
<script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js"></script>
</body>
</html>

详情页

detail.jsp

<%@page contentType="text/html; charset=UTF-8" language="java" %>
<%@include file="common/tag.jsp" %>
<!DOCTYPE html>
<html>
<head>
    <title>秒杀详情页</title>
    <%@include file="common/head.jsp" %>
</head>
<body>
<div class="container">
    <div class="panel panel-default text-center">
        <div class="pannel-heading">
            <h1>${seckill.name}</h1>
        </div>

        <div class="panel-body">
            <h2 class="text-danger">
                <%--显示time图标--%>
                <span class="glyphicon glyphicon-time"></span>
                <%--展示倒计时--%>
                <span class="glyphicon" id="seckill-box"></span>
            </h2>
        </div>
    </div>
</div>
<%--登录弹出层 输入电话--%>
<div id="killPhoneModal" class="modal fade">

    <div class="modal-dialog">

        <div class="modal-content">
            <div class="modal-header">
                <h3 class="modal-title text-center">
                    <span class="glyphicon glyphicon-phone"> </span>秒杀电话:
                </h3>
            </div>

            <div class="modal-body">
                <div class="row">
                    <div class="col-xs-8 col-xs-offset-2">
                        <input type="text" name="killPhone" id="killPhoneKey"
                               placeholder="填写手机号^o^" class="form-control">
                    </div>
                </div>
            </div>

            <div class="modal-footer">
                <%--验证信息--%>
                <span id="killPhoneMessage" class="glyphicon"> </span>
                <button type="button" id="killPhoneBtn" class="btn btn-success">
                    <span class="glyphicon glyphicon-phone"></span>
                    Submit
                </button>
            </div>

        </div>
    </div>

</div>

</body>
<%--jQery文件,务必在bootstrap.min.js之前引入--%>
<script src="http://apps.bdimg.com/libs/jquery/2.0.0/jquery.min.js"></script>
<script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<%--使用CDN 获取公共js http://www.bootcdn.cn/--%>
<%--jQuery Cookie操作插件--%>
<script src="http://cdn.bootcss.com/jquery-cookie/1.4.1/jquery.cookie.min.js"></script>
<%--jQuery countDown倒计时插件--%>
<script src="http://cdn.bootcss.com/jquery.countdown/2.1.0/jquery.countdown.min.js"></script>

<script src="/resource/script/seckill.js" type="text/javascript"></script>

<script type="text/javascript">
    $(function () {
        //使用EL表达式传入参数
        seckill.detail.init({
            seckillId:${seckill.seckillId},
            startTime:${seckill.startTime.time},//毫秒
            endTime:${seckill.endTime.time}
        });
    })
</script>
</html>

seckill.js

//存放主要交互逻辑的js代码
// javascript 模块化(package.类.方法)

var seckill = {

    //封装秒杀相关ajax的url
    URL: {
        now: function () {
            return '/seckill/time/now';
        },
        exposer: function (seckillId) {
            return '/seckill/' + seckillId + '/exposer';
        },
        execution: function (seckillId, md5) {
            return '/seckill/' + seckillId + '/' + md5 + '/execution';
        }
    },

    //验证手机号
    validatePhone: function (phone) {
        if (phone && phone.length == 11 && !isNaN(phone)) {
            return true;//直接判断对象会看对象是否为空,空就是undefine就是false; isNaN 非数字返回true
        } else {
            return false;
        }
    },

    //详情页秒杀逻辑
    detail: {
        //详情页初始化
        init: function (params) {
            //手机验证和登录,计时交互
            //规划我们的交互流程
            //在cookie中查找手机号
            var userPhone = $.cookie('userPhone');
            //验证手机号
            if (!seckill.validatePhone(userPhone)) {
                //绑定手机 控制输出
                var killPhoneModal = $('#killPhoneModal');
                killPhoneModal.modal({
                    show: true,//显示弹出层
                    backdrop: 'static',//禁止位置关闭
                    keyboard: false//关闭键盘事件
                });

                $('#killPhoneBtn').click(function () {
                    var inputPhone = $('#killPhoneKey').val();
                    console.log("inputPhone: " + inputPhone);
                    if (seckill.validatePhone(inputPhone)) {
                        //电话写入cookie(7天过期)
                        $.cookie('userPhone', inputPhone, {expires: 7, path: '/seckill'});
                        //验证通过　　刷新页面
                        window.location.reload();
                    } else {
                        //todo 错误文案信息抽取到前端字典里
                        $('#killPhoneMessage').hide().html('<label class="label label-danger">手机号错误!</label>').show(300);
                    }
                });
            }

            //已经登录
            //计时交互
            var startTime = params['startTime'];
            var endTime = params['endTime'];
            var seckillId = params['seckillId'];
            $.get(seckill.URL.now(), {}, function (result) {
                if (result && result['success']) {
                    var nowTime = result['data'];
                    //时间判断 计时交互
                    seckill.countDown(seckillId, nowTime, startTime, endTime);
                } else {
                    console.log('result: ' + result);
                    alert('result: ' + result);
                }
            });
        }
    },

    handlerSeckill: function (seckillId, node) {
        //获取秒杀地址,控制显示器,执行秒杀
        node.hide().html('<button class="btn btn-primary btn-lg" id="killBtn">开始秒杀</button>');

        $.get(seckill.URL.exposer(seckillId), {}, function (result) {
            //在回调函数种执行交互流程
            if (result && result['success']) {
                var exposer = result['data'];
                if (exposer['exposed']) {
                    //开启秒杀
                    //获取秒杀地址
                    var md5 = exposer['md5'];
                    var killUrl = seckill.URL.execution(seckillId, md5);
                    console.log("killUrl: " + killUrl);
                    //绑定一次点击事件
                    $('#killBtn').one('click', function () {
                        //执行秒杀请求
                        //1.先禁用按钮
                        $(this).addClass('disabled');//,<-$(this)===('#killBtn')->
                        //2.发送秒杀请求执行秒杀
                        $.post(killUrl, {}, function (result) {
                            if (result && result['success']) {
                                var killResult = result['data'];
                                var state = killResult['state'];
                                var stateInfo = killResult['stateInfo'];
                                //显示秒杀结果
                                node.html('<span class="label label-success">' + stateInfo + '</span>');
                            }
                        });
                    });
                    node.show();
                } else {
                    //未开启秒杀(浏览器计时偏差)
                    var now = exposer['now'];
                    var start = exposer['start'];
                    var end = exposer['end'];
                    seckill.countDown(seckillId, now, start, end);
                }
            } else {
                console.log('result: ' + result);
            }
        });

    },

    countDown: function (seckillId, nowTime, startTime, endTime) {
        console.log(seckillId + '_' + nowTime + '_' + startTime + '_' + endTime);
        var seckillBox = $('#seckill-box');
        if (nowTime > endTime) {
            //秒杀结束
            seckillBox.html('秒杀结束!');
        } else if (nowTime < startTime) {
            //秒杀未开始,计时事件绑定
            var killTime = new Date(startTime + 1000);//todo 防止时间偏移
            seckillBox.countdown(killTime, function (event) {
                //时间格式
                var format = event.strftime('秒杀倒计时: %D天 %H时 %M分 %S秒 ');
                seckillBox.html(format);
            }).on('finish.countdown', function () {
                //时间完成后回调事件
                //获取秒杀地址,控制现实逻辑,执行秒杀
                console.log('______fininsh.countdown');
                seckill.handlerSeckill(seckillId, seckillBox);
            });
        } else {
            //秒杀开始
            seckill.handlerSeckill(seckillId, seckillBox);
        }
    }

}

今天又学java了

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高并发秒杀业务 WEB层

WEB层

Restful接口设计

整合SpringMVC框架

springMVC实现Restful接口

前端

列表页

详情页

seckill.js

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