executeQuery() 에러
executeQuery() 에러executeQuery() 실행 후 com.mysql.jdbc.CommunicationsException: The last communications with the server was 63 seconds ago, which is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J conn..
