com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 125,834 milliseconds ago. The last packet sent successfully to the server was 1 milliseconds ago.

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed.Connection was implicitly closed by the driver. ¹øÈ£ Á¦ ¸ñ ¿Ã¸°³¯ Á¶È¸¼ö Á¦¸ñ ³»¿ë °Ë»ö