1. Configure In and Out Logging interceptors

CXF provides interceptors for Inbound and Outbound message logging. Below the configuration to activate them.

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xmlns:jaxws="http://cxf.apache.org/jaxws" 
	xmlns:cxf="http://cxf.apache.org/core"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd 
http://cxf.apache.org/simple http://cxf.apache.org/schemas/simple.xsd 
http://cxf.apache.org/bindings/soap http://cxf.apache.org/schemas/configuration/soap.xsd 
http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd 
http://cxf.apache.org/core http://cxf.apache.org/schemas/core.xsd
">

	<import resource="classpath:META-INF/cxf/cxf-servlet.xml" />
	<import resource="classpath:META-INF/cxf/cxf.xml" />
	
	...

	<!-- Loggers for SOAP calls -->
	<bean id="abstractLoggingInterceptor" class="org.apache.cxf.interceptor.AbstractLoggingInterceptor" abstract="true" />
	<bean id="loggingInInterceptor" class="org.apache.cxf.interceptor.LoggingInInterceptor" parent="abstractLoggingInterceptor" />
	<bean id="loggingOutInterceptor" class="org.apache.cxf.interceptor.LoggingOutInterceptor" parent="abstractLoggingInterceptor" />

	<cxf:bus>
		<cxf:inInterceptors>
			<ref bean="loggingInInterceptor" />
		</cxf:inInterceptors>
		<cxf:outInterceptors>
			<ref bean="loggingOutInterceptor" />
		</cxf:outInterceptors>
		<cxf:outFaultInterceptors>
			<ref bean="loggingOutInterceptor" />
		</cxf:outFaultInterceptors>
		<cxf:inFaultInterceptors>
			<ref bean="loggingInInterceptor" />
		</cxf:inFaultInterceptors>
	</cxf:bus>
</beans>

Using Log4j Instead of java.util.logging

CXF by default uses java.util.logging. If you want you can log using Log4J. Under src/main/resources/META-INF/cxf/ create a file named org.apache.cxf.Logger with the following contents:

org.apache.cxf.common.logging.Log4jLogger

You may need to add a category org.apache.cxf to your Log4J configuration like below:

<category name="org.apache.cxf" additivity="false">
    <priority value="INFO" />
    <appender-ref ref="LOG" />
</category>