在 application.properties 中设置

数据连接配置

spring.datasource.url=jdbc:mysql://localhost:3306/stockpool2?createDatabaseIfNotExist=true&useSSL=false&serverTimezone=UTC&characterEncoding=UTF-8&useUnicode=true
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

createDatabaseIfNotExist=true 自动建库
com.mysql.cj.jdbc.Driver 定义 cj

HikariCP 连接池配置

spring.datasource.hikari.maximum-pool-size=20
spring.datasource.hikari.minimum-idle=5
spring.datasource.hikari.idle-timeout=30000
spring.datasource.hikari.max-lifetime=1800000
spring.datasource.hikari.connection-timeout=30000
spring.datasource.hikari.auto-commit=true

在pom 中设置

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.33</version>
</dependency>


<dependency>
    <groupId>com.mysql</groupId>
    <artifactId>mysql-connector-j</artifactId>
    <version>9.0.0</version>
</dependency>