MySQL 警告WARN: Establishing SSL connection without server's identity verification is not recommended.

Fri Jun 17 13:46:54 CST 2016 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.

首先恭喜，出现这个的时候MySQL说明已经安装成功了，这是警告不是错误，之后使用是不影响的。大概的意思就是说创建ssl链接，可是服务器没有身份认证，这种方式不推荐使用。

解决办法：

　　原来的链接url：Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "letmein");

　　如今的链接url:Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&useSSL=false","root", "letmein");
            // 链接URL为 jdbc:mysql//服务器地址/数据库名 ，后面的2个参数分别是登录用户名和密码