Whats the root cause of Log4JLogger' cannot be found or is not useable?
If you using Maven, you must ensure declare commons-logging and log4j in pom.xml
<dependencies>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.3</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
</dependencies>
if you declare only commons-logging you with getting error Log4JLogger cannot be found or is not useable
This was a classpath problem and we did have another version of log4j in the classpath. Thanks Nathan Ryan !