config SQLException:com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was9777 milliseconds ago.The last packet sent successfully to the server was 9777 milliseconds 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 connection property 'autoReconnect=true' to avoid this problem.

choices NullPointerException---:java.lang.NullPointerException

directoryChoices NullPointerException---:java.lang.NullPointerException

bodyTop NullPointerException---:java.lang.NullPointerException

columns.jsp NullPointerException---:java.lang.NullPointerException

matrixEdit NullPointerException---:java.lang.NullPointerException

columns.jsp NullPointerException---:java.lang.NullPointerException

content.jsp NullPointerException---:java.lang.NullPointerException

contentEdit NullPointerException---:java.lang.NullPointerException

columns.jsp NullPointerException---:java.lang.NullPointerException