[PRBM] log4jdbc-log4j2 설정 간 에러 발생

log4jdbc-log4j2 설정 중에 아래와 같은 내용의 에러가 발생했는데.

Caused by: org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'driverClassName' threw exception; nested exception is java.lang.NoClassDefFoundError: Unable to find Log4j2 as default logging library. Please provide a logging library and configure a valid spyLogDelegator name in the properties file.
	at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:122)
	at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:77)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1644)
	... 41 more

 >> log4jdbc.log4j2.properties 파일을 읽지 못해서 나오는 에러

. ==> 나같은 경우는 log4jdbc.log4j2.properties 인데  log4jdbc "-"  log4j2.properties "  -  "로 이름을 지어서 실패.