i am a green hand on xfire
i catch a error like this
i think this is caused by the version,but i don't know how to deal with it.
help me~~
thanks
Exception in thread "main" javax.xml.stream.FactoryConfigurationError: Provider null could not be instantiated: java.lang.NullPointerException
at javax.xml.stream.FactoryFinder.newInstance(FactoryFinder.java:75)
at javax.xml.stream.FactoryFinder.find(FactoryFinder.java:136)
at javax.xml.stream.FactoryFinder.find(FactoryFinder.java:92)
at javax.xml.stream.XMLInputFactory.newInstance(XMLInputFactory.java:136)
at at org.codehaus.xfire.util.STAXUtils.<clinit>(STAXUtils.java:48).null(Unknown Source)
at org.codehaus.xfire.transport.http.HttpChannel.writeWithoutAttachments(HttpChannel.java:54)
at org.codehaus.xfire.transport.http.CommonsHttpMessageSender.getByteArrayRequestEntity(CommonsHttpMessageSender.java:417)
at org.codehaus.xfire.transport.http.CommonsHttpMessageSender.send(CommonsHttpMessageSender.java:355)
at org.codehaus.xfire.transport.http.HttpChannel.sendViaClient(HttpChannel.java:123)
at org.codehaus.xfire.transport.http.HttpChannel.send(HttpChannel.java:48)
at org.codehaus.xfire.handler.OutMessageSender.invoke(OutMessageSender.java:26)
at org.codehaus.xfire.handler.HandlerPipeline.invoke(HandlerPipeline.java:131)
at org.codehaus.xfire.client.Invocation.invoke(Invocation.java:75)
at org.codehaus.xfire.client.Client.invoke(Client.java:335)
at org.codehaus.xfire.client.XFireProxy.handleRequest(XFireProxy.java:77)
at org.codehaus.xfire.client.XFireProxy.invoke(XFireProxy.java:57)
at $Proxy0.echo(Unknown Source)
at com.c2.xfire.example.CallService.runSimpleService(CallService.java:49)
at com.c2.xfire.example.CallService.main(CallService.java:24)
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