access web service over plugin

[antonio]

Hi All,

I'm trying to access a web service over a simple plugin. The web
service is
the "helloservice" example of jwsdp 1.3 .
When I compile and run the example as java-project in eclipse, it
works!
But when I try to make a plugin, I get the error:

Endpoint address = http://localhost:8080/hello-jaxrpc/hello
hello obj: staticstub.HelloIF_Stub@5e8d7d
java.lang.NullPointerException
at com.sun.xml.rpc.soap.message.SOAPMessageContext.createMessage(SOAPMessageContext.java:114)
at com.sun.xml.rpc.client.StreamingSenderState.<init>(StreamingSenderState.java:26)
at com.sun.xml.rpc.client.StreamingSender._start(StreamingSender.java:46)
at staticstub.HelloIF_Stub.sayHello(HelloIF_Stub.java:52)
at staticstub.HelloClient.main(HelloClient.java:46)
at hallo.actions.SampleAction.run(SampleAction.java:37)
at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:251)
at org.eclipse.ui.internal.WWinPluginAction.runWithEvent(WWinPluginAction.java:207)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:456)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetEvent(ActionContributionItem.java:403)
at org.eclipse.jface.action.ActionContributionItem.access$0(ActionContributionItem.java:397)
at org.eclipse.jface.action.ActionContributionItem$ActionListener.handleEvent(ActionContributionItem.java:72)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:81)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:840)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2022)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1729)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1402)
at org.eclipse.ui.internal.Workbench.run(Workbench.java:1385)
at org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoader.java:858)
at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.eclipse.core.launcher.Main.basicRun(Main.java:291)
at org.eclipse.core.launcher.Main.run(Main.java:747)
at org.eclipse.core.launcher.Main.main(Main.java:583)

Can someone help me??
Thanks!