# 翻转课堂管理系统
## 目录
1. [主要功能](#main-function)
2. [演示图片](#demo-picture)
3. [项目技术栈](#project-tech-stack)
4. [目录结构](#directory-structure)
5. [任务 & 代码规范](#task-and-code-standard)
6. [项目总结](#project-summary)
## <div id = "main-function" /> 主要功能
#### 老师
1. 共享分组 / 讨论课
2. 讨论课展示 / 提问打分
3. 课后作业(书面报告)打分
#### 学生
1. 组队管理
2. 讨论课提问
3. 上传 / 下载 发言材料 / 书面报告
4. 查看成绩
#### 管理员
1. 管理(CRUD)老师 / 学生账号
## <div id = "demo-picture" />演示图片
详见:
[demo-picture](Demo Picture.md)
## <div id = "project-tech-stack" /> 项目技术栈
#### 工具
为了避免 / 减少由于工具版本不同可能产生的问题,该项目强制要求使用下列版本。
此外,类库版本以pom.xml文件为标准,这里没有列出。
注:{version} ~ 表示此版本后均可接受。
+ JDK 8
+ Git 2.18 ~ GUI:sourceTree
+ Maven 3.5.4 ~
+ IDE:Idea 2018 ~
+ Mysql:5.7.22 ~
+ Navicat for Mysql / Navicat Premium
#### 类库等其他相关
后端:
+ Springboot
+ Mybatis
+ Druid
+ Spring Security
+ Springboot-Mail
+ Springboot-Actuator
+ Websocket
+ PageHelper
+ 通用Mapper
+ poi
+ Jackson
+ lombok
前端:
+ freemarker
+ bootstrap、material-kit、jquery、popper
+ stomp
#### MyBatis-Generator / 通用Mapper 的使用
在数据库(领域模型)确定雏形 / 变更之后,使用通用Mapper配合MBG来自动生成entity、mapper、mapper-xml文件,防止人工编写 / 修正时出现错误。
在距离项目交付日期过近时,数据库字段名发生重大变化,使用修改映射的方法临时配合,在之后时间充沛时进行重构。
参考资料:
[springboot集成mybatis及mybatis generator工具使用](https://blog.csdn.net/travellersy/article/details/78620247)
[MyBatis 通用 Mapper4](https://github.com/abel533/Mapper/wiki)
#### 插件(Idea支持)
+ p3c —— 要求通过阿里规约检测,Critical级别及以上必须处理(除非有正当理由,在本项目中只出现了NoOpPasswordEncoder导致Critical,当然,之后可以很方面地切换到BCyptPsswordEncoder等加密器)。Major级别在时间允许的情况尽量处理。
+ lombok —— 要求pojo的字段getter、setter、hashcode、equal、toString方法均使用lombok注解处理;所有类使用日志时必须使用@Slf4j注解。
## <div id = "directory-structure" />目录结构
#### 代码层
根目录:online.templab.flippedclass (域名反写)
根目录下放置FlippedClassApplication,Application类需要放在最外侧,否则出现找不到页面等异常
原因:spring-boot会自动加载启动类所在包下及其子包下的所有组件
+ common:与业务关联不是紧密联系的,并且复用度高的组件
+ email:发送邮件
+ excel:导入名单
+ multipart:上传 / 下载
+ security:spring-security的配置类
+ websocket:websocket的配置类
+ controller:前端控制器(为freemarker、json api服务)
+ service、service / impl:数据服务层,其实现接口放在service包下的impl包中
+ dao、dao / impl:数据访问层,统领Mapper完成级联更新、删除、增加
+ mapper :数据访问层,完成该表直接相关的CRUD
+ entity:实体类
+ util:工具类 —— 本项目没有用到
+ constant:常量接口类 —— 本项目没有用到
+ exception:异常类
+ dto:数据传输对象,用于封装多个实体类之间的关系
#### 资源目录结构
根目录:resources
+ config:Springboot 配置文件
+ static:静态资源
+ css:
+ js:为本项目编写的js文件
+ fonts:
+ icon:
+ imgs:
+ lib:其他开源类库的js文件
+ mapper:mybatis的映射文件
+ mybatis-generator:MBG(通用Mapper)的配置文件
+ templates:视图模板,存放Freemarker文件
+ admin:管理员相关页面
+ student:学生相关页面
+ teacher:老师相关页面
参考资料:[spring boot 项目开发常用目录结构](https://blog.csdn.net/Auntvt/article/details/80381756)
## <div id = "task-and-code-standard" /> 任务 & 代码规范
详见:
[Task & Code Standard](Task & Code Standard.md)
## <div id = "project-summary" /> 项目总结
#### 完成情况
1. 全部功能开发完毕,核心功能点经测试均可行,非核心的功能点测试没有完全覆盖。
2. 在完成初期,每次请求页面的流量过大,导致服务器带宽无法承受。在开启GZip,修正js、css为cdn的资源之后,请求的页面大小从平均1200KB降低到10KB(有图片的页面需要70-100KB)。
#### 缺陷
1. 大部分代码的可读性一般,可复用性较低。
2. 代码的内聚性和耦合度都有待优化。
3. 经阿里规约检测,major级别的提示太多,待解决。
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基于Springboot+Mybati+spring-Security+Websocket开发的翻转课堂讨论课管理系统
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该项目利用了基于springboot + vue + mysql的开发模式框架实现的课设系统,包括了项目的源码资源、sql文件、相关指引文档等等。 【项目资源】:包含前端、后端、移动开发、操作系统、人工智能、物联网、信息化管理、数据库、硬件开发、大数据、课程资源、音视频、网站开发等各种技术项目的源码。包括STM32、ESP8266、PHP、QT、Linux、iOS、C++、Java、python、web、C#、EDA、proteus、RTOS等项目的源码。 【技术】 Java、Python、Node.js、Spring Boot、Django、Express、MySQL、PostgreSQL、MongoDB、React、Angular、Vue、Bootstrap、Material-UI、Redis、Docker、Kubernetes
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