关于发送SOAP消息的错误

各位大虾：
  小弟初学SOAP，写了个简单的客户端和servlet，客户端发送SOAP消息的时候出现下面错误，搜索了一下说是什么卡巴斯基，我关了还是有这个错误，那位大侠帮忙提示一下！
log4j:WARN No appenders could be found for logger (org.apache.axis2.util.Loader).
log4j:WARN Please initialize the log4j system properly.
javax.xml.soap.SOAPException: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog
 at [row,col {unknown-source}]: [1,0]
        at org.apache.axis2.saaj.SOAPConnectionImpl.handleSOAPMessage(SOAPConnectionImpl.java:194)
        at org.apache.axis2.saaj.SOAPConnectionImpl.call(SOAPConnectionImpl.java:130)
        at soaptestclient.Main.sendSOAPMessage(Main.java:73)
        at soaptestclient.Main.main(Main.java:179)
Caused by: org.apache.axis2.AxisFault: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog
 at [row,col {unknown-source}]: [1,0]
        at org.apache.axis2.AxisFault.makeFault(AxisFault.java:430)
        at org.apache.axis2.transport.TransportUtils.createSOAPMessage(TransportUtils.java:90)
        at org.apache.axis2.description.OutInAxisOperationClient.handleResponse(OutInAxisOperation.java:353)
        at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:416)
        at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:228)
        at org.apache.axis2.client.OperationClient.execute(OperationClient.java:163)
        at org.apache.axis2.saaj.SOAPConnectionImpl.handleSOAPMessage(SOAPConnectionImpl.java:188)
        ... 3 more
Caused by: org.apache.axiom.om.OMException: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog
 at [row,col {unknown-source}]: [1,0]
        at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:249)
        at org.apache.axiom.soap.impl.builder.StAXSOAPModelBuilder.getSOAPEnvelope(StAXSOAPModelBuilder.java:156)
        at org.apache.axiom.soap.impl.builder.StAXSOAPModelBuilder.<init>(StAXSOAPModelBuilder.java:105)
        at org.apache.axis2.builder.SOAPBuilder.processDocument(SOAPBuilder.java:53)
        at org.apache.axis2.transport.TransportUtils.createDocumentElement(TransportUtils.java:164)
        at org.apache.axis2.transport.TransportUtils.createSOAPMessage(TransportUtils.java:112)
        at org.apache.axis2.transport.TransportUtils.createSOAPMessage(TransportUtils.java:88)
        ... 8 more
Caused by: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog
 at [row,col {unknown-source}]: [1,0]
        at com.ctc.wstx.sr.StreamScanner.throwUnexpectedEOF(StreamScanner.java:661)
        at com.ctc.wstx.sr.BasicStreamReader.handleEOF(BasicStreamReader.java:2134)
        at com.ctc.wstx.sr.BasicStreamReader.nextFromProlog(BasicStreamReader.java:2040)
        at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1069)
        at org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext(StAXOMBuilder.java:506)
        at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:161)
        ... 14 more