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README
AGPL-3.0

网上商城

截图展示

商品页面
注册页面
登录页面
购物车
订单
检索
管理商品
新增商品
秒杀

声明

  • 本项目静态资源由网络收集得来,并加以大范围修改
  • 未经许可不得将本项目商用,如需商用请联系作者zxr@tju.edu.cn

关键技术

基于SpringCloud框架开发的商城系统,代码严格遵循MVC分层思想,可部署到服务器上,设计精良,不断完善

包结构说明

  • com.supermarket.*.filter对应于微服务的过滤器
  • com.supermarket.*.listener对应于微服务的监听器
  • com.supermarket.*.controller对应于微服务的controller层
  • com.supermarket.*.aspect对应于微服务的切面类
  • com.supermarket.*.service对应于微服务的service层
  • com.supermarket.*.dao对应于微服务的持久层
  • com.supermarket.*.schedule对应于微服务的定时任务
  • com.supermarket.*.exception对应于微服务的自定义异常
  • com.supermarket.*.domain对应于微服务的JavaBean
  • com.supermarket.*.utils对应于微服务的工具类
  • com.supermarket.*.vo对应于微服务的ViewObject

系统架构

架构图

功能说明

用户微服务(com.supermarket.user)

  • 用户登录
  • 免验证码登录
  • 用户注册
  • 用户登出
  • 用户名可用性校验
  • 用户登录状态获取
  • 查询用户权限等级

商品微服务(com.supermarket.product)

  • 分页查询
  • 单个商品查询
  • 商品新增
  • 商品修改
  • 查询全部商品

公共资源微服务(com.supermarket.common)

  • 公共资源微服务同时也是SpringCloud的Eureka模块
  • 提供了常用的JavaBean, ViewObject, 工具类

zuul网关(com.supermarket.gateway)

  • SpringCloud的zuul网关模块
  • 对敏感API调用进行后端鉴权

图片微服务(com.supermarket.image)

  • 图片上传功能
  • 生成验证码功能
  • 清除验证码在redis中的缓存

购物车微服务(com.supermarket.cart)

  • 购物车查询
  • 购物车新增商品
  • 购物车删除商品
  • 购物车修改商品
  • 购物车价格查询

订单微服务(com.supermarket.order)

  • 新增订单
  • 删除订单
  • 查询订单

检索微服务(com.supermarket.search)

  • 分页检索
  • 新增商品
  • 删除商品
  • 建立索引

秒杀微服务(com.supermarket.instantbuy)

  • 全部秒杀商品查询
  • 单个秒杀商品查询
  • 发起秒杀

交流群

点击链接加入群聊【Supermarket项目交流群】:https://jq.qq.com/?_wv=1027&k=wlpUy5jo
交流群二维码

部署教程

版本迭代

版本号 更新内容 上传时间
0.1
  • 初步完成项目方案确定
  • 完成主页及注册页面的静态资源编写(包括js,css)
  • 完成主页及注册页面的动态资源编写(包括jsp,servlet)
  • 通过jdbc链接MySQL数据库
  • 使用c3p0连接池
2020年8月3日
0.1.1
  • 可以选择使用哪个连接池,并且在web.xml中指定,现在可以使用DBCP连接池
  • 通过反射机制设置如果指定连接池调用失败,再调用哪个连接池
  • 使用Ajax技术完成前端用户名校验
  • 更改img标签的src属性,使浏览器异步发送GET请求,刷新验证码
2020年8月7日
0.1.2
  • 使用JDBC.properties进行全局JDBC配置
  • 去掉JDBC的反射调用
  • 使用cookie完成记住用户名功能
  • 新增登录功能:使用session完成会话级别的数据传递
  • 新增注销功能:通过ajax请求销毁session
  • 修改静态页面,使其实现对logo.png的单独依赖
2020年8月9日
0.2
  • 使用EL表达式替换jsp页面中的脚本表达式
  • 修改静态资源,主页增加右下角浮动项以及向上返回功能
  • 新增错误页面提示
  • 重构为JavaEE三层经典架构
2020年8月20日
0.2.1
  • 使用过滤器完成全局请求参数拦截处理,包括全局中文乱码处理、全局password请求参数加密
  • 通过过滤器实现全局连接池选定
  • 通过过滤器实现自动登录功能
  • 通过装饰者模式扩展request对象
2020年8月22日
0.2.2
  • 使用log4j框架进行日志记录
  • 修复重启服务器自动登录失效的bug
  • 加入网页标题图标
2020年8月24日
0.2.3
  • 将JDBC初始化功能交由监听器实现,并移除对应的过滤器
  • 使用过滤器实现JDBC反注册,避免内存泄漏
  • 使用注解替代web.xml完成servlet和监听器的注册
  • 重写前端校验,对于支持html5的浏览器使用其自带校验
2020年8月25日
0.3
  • 使用Spring、SpringMVC、MyBatis重构该web应用
  • 使用User类的装饰者模式完成密码的md5加密功能
  • 使用SpringMVC拦截器记录用户的访问请求
  • 使用切面记录错误日志,并统计响应时间
  • 升级log4j为log4j2
  • 使用html5及jQuery相结合的方式进行前端表单校验
2020年9月25日
0.3.1
  • 新增UserDao的SpringJDBC模板类实现
  • 注册用户功能开启事务,修复多个用户同时注册时可能造成用户名重复的bug
2020年9月29日
0.3.2
  • 新增备选的DBCP连接池配置
2020年10月1日
0.4
  • 使用Maven重构依赖
  • 使用SpringCloud重构项目
  • 重构数据库
  • 增加common微服务: 存放共享资源(如JavaBean, 工具类, ViewObject)
  • 增加商品微服务:新增、修改、查询功能
  • 增加用户微服务:用户名校验、注册
  • 增加图片微服务:图片上传
  • 增加nginx:负载均衡、动态静态资源分离
2020年11月10日
0.4.1
  • 新增redis配置,通过redis解决微服务之间数据共享问题
  • 完善用户微服务:实现登录、登出、登录状态获取,修复注册未校验密码一致性的Bug
  • 改进redis数据结构:将key-value改进为hash,从而实现单点登录
  • 使用AOP切面实现登录时长的自动延长
2020年11月12日
0.4.2
  • 调整前端css,增加注册、登录的错误提示
  • 新增注册成功页面
  • 其他前端页面样式的调整
2020年11月13日
0.4.3
  • 完善图片微服务:新增功能生成验证码、验证码缓存清理(避免前端连续请求验证码爆掉redis)
  • 完善用户微服务:登录、注册需要验证码,登录或注册成功后清除验证码缓存(节省redis内存)
  • 完善商品微服务:商品新增、查询、编辑触发被动缓存
2020年11月14日
0.4.4
  • 新增购物车微服务:实现商品查询、商品新增、商品修改、商品删除功能
  • 通过事务实现购买数量后端校验:防止购买量大于库存
  • 在前端实现购买数量校验校验:防止购买量大于库存
2020年11月15日
0.4.5
  • 完善图片微服务:解决redis中验证码缓存无法清理的BUG
  • 完善用户微服务:新增记住用户名、自动登录功能
2020年11月18日
0.4.6
  • 修复自动登录与单点登录功能冲突的bug。
  • 替换网页logo,避免不必要的责任纠纷
2020年11月19日
0.4.7
  • 新增订单微服务:实现订单新增、订单查询、订单删除功能
  • 完善购物车微服务:新增总价格查询功能
  • 数据库迁移至服务器,并通过MyCat管理分库分表
  • 每个数据分片通过双向主从实现MySQL高可用,并开启读写分离
2020年11月24日
0.4.8
  • 新增检索微服务:分页检索、增加文档、删除文档、修改文档
  • 完善商品微服务:查询全部商品
  • 完善前端:进入后台权限校验
2020年11月30日
0.4.9
  • 新增秒杀微服务:全部秒杀商品查询、单个秒杀商品查询、发起秒杀(尚未联调)
  • 修改部分前端页面
2020年12月6日
0.5
  • 完善秒杀微服务:修复若干bug
  • 完善zuul网关:对敏感API调用进行后端鉴权
  • 完善用户微服务:新增权限查询功能
2020年12月9日
0.5.1
  • 完善秒杀微服务:修复发起秒杀功能中的线程安全问题
  • 新增全系统架构图
2020年12月10日
0.5.2
  • 完善秒杀微服务:修复发起秒杀功能中的线程安全问题
  • 完善zuul网关:过滤器实现更细粒度鉴权
  • 完善检索微服务:修复新增和编辑商品时无法同步到elasticsearch的Bug
2020年12月11日
0.5.3
  • 微服务添加熔断器,避免单个故障导致集群崩溃
  • 使用Feign替代Ribbon进行微服务间调用
  • 完善检索微服务:修复微服务启动时创建索引失败的bug
  • 新增log4j2日志框架支持
2020年12月12日

配置情况

遇到的bug锦集(作为记录,博君一笑)

  • HttpServletRequest的装饰者类HttpServletRequestDecorator中的getParameterMap重写方法中,不能在原地进行参数字符集修改,否则如果调用两次及以上该方法时会编码多次,造成乱码
  • 对请求参数的拦截处理,如果用到装饰者模式,最好在一处完成。如果在多处完成会造成请求参数的重复处理,从而导致乱码或者拿到非预期的参数值
  • 用户的登录信息最好保存到session域中,在0.2.1中的自动登录成功后误把user对象塞入到了request域,造成了重启服务器自动登录失效的bug。
  • 使用过滤器将密码加密,不仅要将参数为password的值加密,还要将参数为password2的值加密,否则永远确认密码不一致
  • 使用SpringMVC处理请求参数,如果自动封bean作为方法参数传入,那么该bean所携带的请求参数是不经过过滤器的!原因未知
  • 自动登录最好使用过滤器实现,因为SpringMVC拦截器无法拦截index.jsp。而因为使用过滤器的时候Spring容器还未初始化,所以过滤器的属性需要手工注入
  • 即便上一次响应设置了cookie的path,下一次请求携带的cookie的path也会是null。因此如果要修改或删除cookie,一定要严格满足name, path都设置,否则可能会无效
  • 如果间接依赖了spring-cloud-starter-netflix-eureka-server,一定要把jackson-dataformat-xml排除掉,因为如果不排除掉会导致返回给浏览器的对象是xml格式而非json格式
  • MyBatis如果使用bean传参,不要使用<if>标签内的test属性名应该对应bean属性名而非表的列名。否则会报There is no getter for property named 'xx' in 'class xxx
  • 在Springboot项目中,如果要在application.properties中写自定义配置项,若该配置项为路径字符串,一定要写全路径,从盘符写起,否则会自动在前面拼接tomcat的临时路径
  • html中onsubmit事件要放在form标签内,放在<input type="submit" />标签内无效
  • 启动的时候需要先启动redis再启动微服务,否则会报RedisConnectionFailureException
  • redis作为缓存使用时,建议捕获RedisConnectionFailureException异常,从而在redis崩掉的情况下能够直接访问数据库
  • 基于SpringCloud的Ribbon模块在微服务之间相互调用时,不经过zuul网关
  • MySQL主从高可用时,如果因为错误数据导致挂接失败,需要先取消挂接(stop slave),手动删除错误数据,再重新挂接(start slave)
  • MyCat1.5.1版本还不支持复杂SQL,比如update...select..., insert ...select...等
  • insert的时候加上列名是一个好习惯,因为MyCat1.5.1不支持省略列名的写法
  • 直接使用RedisTemplate模板类,键和值会出现类似\xac\xed\x00\x05t\x00的东西,此时要么不去手动查看redis输出,要么换用StringRedisTemplate
  • 用nginx也能做到外部调用内部api的拦截,只需要将提供给前端的api路径和提供给后端的api路径区分开。比如提供给前端的api路径是/manage/query,提供给后端的api是/backend/query,因为nginx拼接了"/manage",所以自然找不到/backend/query
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Notwithstanding any other provision of this License, if you modify the Program, your modified version must prominently offer all users interacting with it remotely through a computer network (if your version supports such interaction) an opportunity to receive the Corresponding Source of your version by providing access to the Corresponding Source from a network server at no charge, through some standard or customary means of facilitating copying of software. This Corresponding Source shall include the Corresponding Source for any work covered by version 3 of the GNU General Public License that is incorporated pursuant to the following paragraph. Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU General Public License into a single combined work, and to convey the resulting work. 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IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 17. Interpretation of Sections 15 and 16. If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee. END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. <one line to give the program's name and a brief idea of what it does.> Copyright (C) <year> <name of author> This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. Also add information on how to contact you by electronic and paper mail. If your software can interact with users remotely through a computer network, you should also make sure that it provides a way for users to get its source. For example, if your program is a web application, its interface could display a "Source" link that leads users to an archive of the code. There are many ways you could offer source, and different solutions will be better for different programs; see section 13 for the specific requirements. You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU AGPL, see <https://www.gnu.org/licenses/>.

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