database springboot

1spring.jpa.hibernate.ddl-auto=update
2spring.datasource.url=jdbc:mysql://${MYSQL_HOST:localhost}:3306/db_example
3spring.datasource.username=springuser
4spring.datasource.password=ThePasswordCopy

1spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
2spring.datasource.url=jdbc:mysql://localhost:3306/learning-spring
3spring.datasource.username=root
4spring.datasource.password=
5spring.datasource.initialization-mode=always
6spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL8Dialect
7spring.jpa.hibernate.ddl-auto=update