postgres,mysql数据库连接driver，url，username，password

postgresql.driver=org.postgresql.Driver
postgresql.url=jdbc:postgresql://localhost:5432/postgres
postgresql.user=postgres
postgresql.password=postgres

mysql8.0.16

spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=

jdbc:mysql://localhost:3306/mydb?serverTimezone=Asia/Chongqing&useUnicode=true&characterEncoding=utf8&characterSetResults=utf8&useSSL=false&verifyServerCertificate=false&autoReconnct=true&autoReconnectForPools=true&allowMultiQueries=true

spring.datasource.username=root spring.datasource.password=root