springboot + mysql8降低版本到 mysql5.7

        <dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.49</version></dependency>

spring:datasource:driverClassName: com.mysql.jdbc.Driverurl: jdbc:mysql://localhost:3306/springbootJeN0b?useUnicode=true&characterEncoding=UTF-8&useSSL=falseusername: rootpassword: 123456