我正在使用axis2 1.5.4和rampart 1.5.1。我不时会收到以下错误：
java.lang.UnsupportedOperationException：解析器已被使用！ 在org.apache.axiom.om.impl.llom.OMElementImpl.getXMLStreamReader（OMElementImpl.java:792） at org.apache.axiom.om.impl.llom.OMElementImpl.getXMLStreamReaderWithoutCaching（OMElementImpl.java:765） 在org.apache.axiom.om.impl.util.OMSerializerUtil.serializeByPullStream（OMSerializerUtil.java:552） at org.apache.axiom.soap.impl.llom.SOAPEnvelopeImpl.internalSerialize（SOAPEnvelopeImpl.java:249） at org.apache.axiom.om.impl.llom.OMSerializableImpl.serializeAndConsume（OMSerializableImpl.java:193） at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo（SOAPMessageFormatter.java:79） 在org.apache.axis2.transport.http.AxisRequestEntity.writeRequest（AxisRequestEntity.java:84） 在org.apache.commons.httpclient.methods.EntityEnclosingMethod.writeRequestBody（EntityEnclosingMethod.java:499） 在org.apache.commons.httpclient.HttpMethodBase.writeRequest（HttpMethodBase.java:2114） 在org.apache.commons.httpclient.HttpMethodBase.execute（HttpMethodBase.java:1096） 在org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry（HttpMethodDirector.java:398） 在org.apache.commons.httpclient.HttpMethodDirector.executeMethod（HttpMethodDirector.java:171） 在org.apache.commons.httpclient.HttpClient.executeMethod（HttpClient.java:397） 在org.apache.commons.httpclient.HttpClient.executeMethod（HttpClient.java:346） at org.apache.axis2.transport.http.AbstractHTTPSender.executeMethod（AbstractHTTPSender.java:557） 在org.apache.axis2.transport.http.HTTPSender.sendViaPost（HTTPSender.java:199） 在org.apache.axis2.transport.http.HTTPSender.send（HTTPSender.java:76） 在org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:400） 在org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke（CommonsHTTPTransportSender.java:225） 在org.apache.axis2.engine.AxisEngine.send（AxisEngine.java:438） 在org.apache.axis2.description.OutInAxisOperationClient.send（OutInAxisOperation.java:402） at org.apache.axis2.description.OutInAxisOperationClient.executeImpl（OutInAxisOperation.java:229） 在org.apache.axis2.client.OperationClient.execute（OperationClient.java:165）
我用来调用WS的代码是：
EndpointReference targetEPR = new EndpointReference(SERVICEOPERPREFIX + oper);
ConfigurationContext ctx = ClsConfigurationContextFactory.getInstance(AXIS_REPOSITORY, AXIS_CONFIG).getContext();
ServiceClient sender = new ServiceClient(ctx, null);
sender.engageModule("rampart");
this.options.setTo(targetEPR);
this.options.setAction(OPERPREFIX + oper);
this.options.setProperty(WSSHandlerConstants.OUTFLOW_SECURITY, getOutflowConfiguration(""+user));
sender.setOptions(this.options);
MultiThreadedHttpConnectionManager httpConnectionManager = new MultiThreadedHttpConnectionManager();
HttpConnectionManagerParams mParams = new HttpConnectionManagerParams();
mParams.setDefaultMaxConnectionsPerHost(MAXNUMCONNECTIONS);
mParams.setConnectionTimeout(new Integer(OSBHTTPConnectionTimeout));
mParams.setSoTimeout(new Integer(OSBHTTPReadTimeout));
httpConnectionManager.setParams(mParams);
HttpClient httpClient = new HttpClient(httpConnectionManager);
sender.getOptions().setProperty("REUSE_HTTP_CLIENT", "true");
sender.getOptions().setProperty("CACHED_HTTP_CLIENT", httpClient);
MessageContext requestMsgCtx = new MessageContext();
SOAPEnvelope inEnvelope = createSOAPEnvelope();
requestMsgCtx.setEnvelope(inEnvelope);
OperationClient opClient= sender.createClient(ServiceClient.ANON_OUT_IN_OP);
opClient.addMessageContext(requestMsgCtx);
sender.cleanupTransport();
opClient.execute(true);
有什么想法吗？
提前致谢