what is "Must Understand check failed for header"error?

Question

my service is issuing the following error that I do not understand why. 
Can someone assist me regarding why and how to resolve this please? [ERROR] Must Understand check failed for header http://www.w3.org/2005/08/addressing : Action
org.apache.axis2.AxisFault: Must Understand check failed for header http://www.w3.org/2005/08/addressing : Action

Answer 1

看看这个有没有帮助:http://www.mail-archive.com/[email protected]/msg38992.html

Answer 2

org.apache.axis2.AxisFault: Must Understand check failed for header http://www.w3.org/2005/08/addressing : Action
at org.apache.axis2.engine.AxisEngine.checkMustUnderstand(AxisEngine.java:97)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:163)
at org.apache.axis2.description.OutInAxisOperationClient.handleResponse(OutInAxisOperation.java:364)
at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:417)
at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:229)
at org.apache.axis2.client.OperationClient.execute(OperationClient.java:165)
at com.tempuri.JSEducationServiceStub.ValidateUser(JSEducationServiceStub.java:2545)
at com.fuyuetech.Login.okBtn_actionPerformed(Login.java:92)
at com.fuyuetech.Login$1.actionPerformed(Login.java:66)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)