Java- jpa

博文:https://www.cnblogs.com/yy3b2007com/p/9186698.html

博文:https://blog.youkuaiyun.com/kai46385076/article/details/79930846

博文,大哥: https://blog.youkuaiyun.com/lv_hang515888/article/details/80463227

Spring JPA查询，JPA 根据方法名字查询详细介绍: https://www.sojson.com/blog/295.html

极客学院视频 添加、修改、删除功能的基本实现: http://www.jikexueyuan.com/course/680_3.html*

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Hikari连接池

（号称java平台最快的，替换druid）:https://blog.youkuaiyun.com/wangh92/article/details/79699172
1.springboot 2.0 默认连接池就是Hikari了，所以引用parents后不用专门加依赖

2.贴我自己的配置（时间单位都是毫秒）

# jdbc_config   datasource
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/datebook?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true&useSSL=false&zeroDateTimeBehavior=convertToNull
spring.datasource.username=root
spring.datasource.password=root
# Hikari will use the above plus the following to setup connection pooling
spring.datasource.type=com.zaxxer.hikari.HikariDataSource
spring.datasource.hikari.minimum-idle=5
spring.datasource.hikari.maximum-pool-size=15
spring.datasource.hikari.auto-commit=true
spring.datasource.hikari.idle-timeout=30000
spring.datasource.hikari.pool-name=DatebookHikariCP
spring.datasource.hikari.max-lifetime=1800000
spring.datasource.hikari.connection-timeout=30000
spring.datasource.hikari.connection-test-query=SELECT 1

3.直接启动即可 如图：