mybatis连接mysql（jdbc）常见问题

问题2：MySQLException: Unknown system variable ‘query_cache_size‘

5.1.45 版本可以，6.0.2版本不行

问题3：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.

根据提示：

url=jdbc:mysql://127.0.0.1:3306/framework?characterEncoding=utf8&useSSL=true

mybatis连接mysql（jdbc）常见问题

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