# springboot-demo

**Repository Path**: sawyes/springboot-demo

## Basic Information

- **Project Name**: springboot-demo
- **Description**: JAVA SpringBoot 技术栈学习Demo
- **Primary Language**: Java
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 1
- **Forks**: 0
- **Created**: 2021-11-14
- **Last Updated**: 2024-12-26

## Categories & Tags

**Categories**: Uncategorized

**Tags**: Java, SpringBoot

## README

# SpringBoot-demo
<a href='https://gitee.com/sawyes/springboot-demo'><img src='https://gitee.com/sawyes/springboot-demo/widgets/widget_3.svg' alt='Fork me on Gitee'></img></a>

[![peter/springboot-demo](https://gitee.com/sawyes/springboot-demo/widgets/widget_card.svg?colors=4183c4,ffffff,ffffff,e3e9ed,666666,9b9b9b)](https://gitee.com/sawyes/springboot-demo)

[commons.apache.org依赖包](https://commons.apache.org/proper/)

## 介绍

有一日逛到[xkcoding/spring-boot-demo](https://github.com/xkcoding/spring-boot-demo)项目有感, 虽然有自己搭建的私人笔记网站, 但是这么多年了也没沉淀代码
有时候仅仅笔记, 是无法复现和说明问题, 所以还是试试这个, 跟着Demo走一遍.

所以, 这不是一个严格意义上的项目, 只是笔记.

## 开发环境

* jdk 1.8
* mysql 5.7
* maven 3.63
* OS: Mac/Window 10
* springboot 2.3.7.RELEASE


## jdbc连接说明

```
url: jdbc:mysql://localhost/test?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&useSSL=false&tinyInt1isBit=false&serverTimezone=Asia/Shanghai
```

* `tinyInt1isBit=false` (default: true), https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-reference-type-conversions.html
* `UTF-8` For 5.1.47 and later: utf8mb4, 参考 https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-reference-charsets.html
* `zeroDateTimeBehavior=convertToNull`, 参考 https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-installing-upgrading-3-0-to-3-1.html
* `profileSQL=true`  开发环境调试SQL非常有用,可以直接看见原生SQL 参考 https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-conn-props-ueConfigs.html

## Demo 列表

| Module 名称                                                   | Module 介绍                                                                                           |
| ------------------------------------------------------------ |-----------------------------------------------------------------------------------------------------|
| [maven-demo-bean-factory-singleton](./maven-demo-bean-factory-singleton)| 结合工厂和单例理解Bean实现, 单例知识点,synchronized和volatile                                                        |
| [maven-demo-test](./maven-demo-test)                         | maven集成测试test                                                                                       |
| [maven-demo-spring](./maven-demo-spring)                     | maven集成spring                                                                                       |
| [maven-demo-jdbc](./maven-demo-jdbc)                         | maven集成测试jdbc                                                                                       |
| [maven-demo-mybatis-manual](./maven-demo-mybatis-manual)     | maven整合mybatis<br/>整合mybatis使用Druid管理连接池<br/>通过动态注入配置(用户名/密码)整合Druid连接池                             |
| [maven-demo-proxy](./maven-demo-proxy)                       | 动态代理                                                                                                |
| [maven-demo-totp](./maven-demo-totp)                         | totp 动态秘钥算法demo                                                                                     |
| [spring-demo-bean-scope](./spring-demo-bean-scope)           | spring bean 生命周期, 成员变量控制问题                                                                          |
| [spring-demo-druid](./spring-demo-druid)                     | spring集成druid                                                                                       |
| [maven-demo-enum](./maven-demo-enum)                         | enum 常规用法, 实例代码, 状态码枚举, 方法枚举                                                                        |
| [maven-demo-template-variable](./maven-demo-template-variable) | 模板变量替换,org.apache.commons.text包使用                                                                   |
| [maven-demo-time](./maven-demo-time)                         | 时间,日期操作类                                                                                            |
| [maven-demo-redson-spring-boot-starter](./maven-demo-redisson-spring-boot-starter)| 自定义starter步骤                                                                                        |
| [spring-demo-starter-redisson-client](./spring-demo-starter-redisson-client)| 引入用自定义starter ,验证[maven-demo-redson-spring-boot-starter](./maven-demo-redisson-spring-boot-starter) |
| [spring-demo-redis](./spring-demo-redis)                      | spring集成redis, redis template工具类封装                                                                  |
| [spring-demo-arthas](./spring-demo-arthas)                      | 学习arthas排查线上错误                                                                                      |
| [spring-demo-web](./spring-demo-web)                            | 学习spring demo web项目搭建，统一CommonResult,集成Selenium测试框架, SpringbootCliApplication 命令行cli使用              |
| [spring-demo-oom](./spring-demo-oom)                            | 了解JVM运行时数据区各个情况的OOM                                                                                 |
| [spring-demo-xxljob-client](./spring-demo-xxljob-client)        | xxljob入门示例                                                                                          |
| [spring-demo-job-annotation](./spring-demo-job-annotation)    | 模仿XXLJOB原理，实现扫描注解方法，然后根据需要调度                                                                        |
| [spring-demo-netty-websocket](./spring-demo-netty-websocket)    | 验证websocket                                                                                         |
| [spring-demo-mybatis-plus](./spring-demo-mybatis-plus)    | SpringBoot整合MyBatisPlus入门                                                                           |

## IDEA设置

插件列表

* Free Mybatis plugin
* Markdown Image Kit

#### Markdown Image Kit插件

先创建一个仓库专门用作图床,这样由插件异步上传图片并生成图片地址, 非常方便

> token是个人令牌

![](https://gitee.com/sawyes/myimages/raw/master/image/2021-11-20-0BXkDC.png)

![](https://gitee.com/sawyes/myimages/raw/master/image/2021-11-20-EnR8Pf.png)

#### Intellij IDEA在controller中使用@Autowired注解，出现could not autowire错误

测试类容易Autowired 连接池, 实际运行不报错,但是IDEA提示错误, 需要关闭, 不然影响测试打包

File-->setting-->Inspections

* Spring->Spring Core->Code->Autowiring for Bean Class 错误等级设置为 warning

![](https://gitee.com/sawyes/myimages/raw/master/image/2021-11-20-uvRufs.png)

#### .editorconfig 风格统一

* EditorConfig的匹配规则是从上往下，即先定义的规则优先级比后定义的优先级要高。
* 对于VS Core，对应的插件名是EditorConfig for VS Code。

![](https://gitee.com/sawyes/myimages/raw/master/image/2021-11-20-0KLm6u.png)

#### 文件和代码模板

维护作者以及日期信息

![](https://gitee.com/sawyes/myimages/raw/master/image/2021-11-21-ZNUxwc.png)

#### java,xml代码注释缩进(默认顶格)

![](https://gitee.com/sawyes/myimages/raw/master/image/2021-11-28-sCjxOW.png)

![](https://gitee.com/sawyes/myimages/raw/master/image/2021-11-28-3l121V.png)


## 延伸阅读

* [Java JDBC和Mysql 字段类型, 你必须了解](https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-reference-type-conversions.html)
* [Mysql utf8mb4 字符集问题](https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-reference-charsets.html)
* [jdbc url reConfigs](https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-conn-props-ueConfigs.html)
* [Query、VO、DTO、BO、DO、PO的区别和联系](https://blog.csdn.net/weixin_36337122/article/details/114807625?utm_medium=distribute.pc_relevant.none-task-blog-baidujs_title-0&spm=1001.2101.3001.4242)
* [设计模式](https://www.runoob.com/design-pattern/design-pattern-tutorial.html)
## License

[MIT](http://opensource.org/licenses/MIT)

Copyright (c) 2021 Peter Wu