mysql连接出现警告

Sat Apr 14 13:09:28 CST 2018 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.

出现这样的警告原因是MySQL在高版本需要指明是否进行SSL连接。 

在mysql连接字符串url中加入ssl=true或者false即可

spring.datasource.url=jdbc:mysql://localhost:3306/jk_bank

增加

?useUnicode=true&characterEncoding=utf-8&useSSL=true

或者useSSL=false

?useUnicode=true&characterEncoding=utf-8&useSSL=false

spring.datasource.url=jdbc:mysql://localhost:3306/jk_bank?useUnicode=true&characterEncoding=utf-8&useSSL=false