There is no DirectJDKLog when start tomcat 8.0.21

I have two web apps.

I try to start them in Intellij IDE with tomcat8.0.21. One app has the log 2017-09-08 11:55:01.396 INFO DirectJDKLog:180 - Initializing Spring root WebApplicationContext, but the other one does not have this log.

That confused me very much, what may cause it?

I hope both of them have this log, because I found when use spring properties reader to inject values, if the property missed in properties file, an error will happen, but if no DirectJDKLog, I won't find the reason caused failed to start web app.