Class not found : com.sun.xml.wss.impl.SecurableSoapMessage

Issue

• We are not able to open a secured soap connection to our provider. We get the following exception every time:

Caused by: java.lang.NoClassDefFoundError: Could not initialize class com.sun.xml.wss.impl.SecurableSoapMessage
        at com.sun.xml.wss.ProcessingContext.setSOAPMessage(ProcessingContext.java:227) ~[xws-security-3.0.jar:3.0-FCS]
        at com.sun.xml.wss.impl.misc.XWSSProcessor2_0Impl.createProcessingContext(XWSSProcessor2_0Impl.java:153) ~[xws-security-3.0.jar:3.0-FCS]
        at org.springframework.ws.soap.security.xwss.XwsSecurityInterceptor.secureMessage(XwsSecurityInterceptor.java:137) ~[spring-ws-security-2.2.1.RELEASE.jar:2.2.1.RELEASE]
        at org.springframework.ws.soap.security.AbstractWsSecurityInterceptor.handleRequest(AbstractWsSecurityInterceptor.java:210) ~[spring-ws-security-2.2.1.RELEASE.jar:2.2.1.RELEASE]
        at org.springframework.ws.client.core.WebServiceTemplate.doSendAndReceive(WebServiceTemplate.java:597) ~[spring-ws-core-2.2.1.RELEASE.jar:2.2.1.RELEASE]

• We do not encounter the problem when we launch the application directly (outside JBoss).