com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet success fully received from the server was 176,705,355 milliseconds ago. The last packet sent successfully to the server was 176,705,366 milliseconds ago. 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 connection property 'autoReconnect=true' to avoid this problem.
我在log4j.xml中执行插入查询后会遇到异常吗？