错误提示如下：

Fri May 13 09:06:04 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 us

ing 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 verifica

tion.

解决方法：

原来的代码：

driver="com.mysql.jdbc.Driver";        url="jdbc:mysql://localhost:3306/db_1";        username="root";        password="123qwe";

改成：

driver="com.mysql.jdbc.Driver";        url="jdbc:mysql://localhost:3306/db_1?characterEncoding=UTF8&useSSL=false";        username="root";        password="123qwe";

这样就可以了~