For Axis2-client side logging for SOAP messages, just use the following JVM arguments while running your standalone client or include this VM args in your Appln. Server start script,
JAVA_OPTS=-Dorg.apache.commons.logging.Log=org.apache.commons.logging.impl.SimpleLog -Dorg.apache.commons.logging.simplelog.showdatetime=true -Dorg.apache.commons.logging.simplelog.log.httpclient.wire=debug -Dorg.apache.commons.logging.simplelog.log.org.apache.commons.httpclient=debug
( http://stackoverflow.com/questions/2524301/log-axis2-client-requests-and-responses )
Buminda 