Read Events from HTTPWebRequest InputStream

[sandeep27st]

am using ExchangeWebService first time and I am trying to read push subscription event using following code.

Document xmlMsg = inputStreamToDocument(request.getInputStream());
System.out.println(documentToString(xmlMsg));

           GetEventsResults eventsResults = new GetEventsResults();
        EwsServiceXmlReader ewsServiceXMlReader = new EwsServiceXmlReader(
                new ByteArrayInputStream(nodeToString(xmlMsg.getElementsByTagName("m:Notification").item(0)).getBytes()),MyPushSubscription.getService());
        eventsResults.loadFromXml(ewsServiceXMlReader);
        eventsResults.getItemEvents();

Got the following error message.

"*ServiceXmlDeserializationException: 
The expected XML node type was START_ELEMENT, but the actual type is 
START_DOCUMENT. at microsoft.exchange.webservices.data.core.EwsXmlReader.read(EwsXmlReader.java:226) at 
microsoft.exchange.webservices.data.core.EwsXmlReader.internalReadElement(EwsXmlReader.java:134) at 
microsoft.exchange.webservices.data.core.EwsXmlReader.readStartElement(EwsXmlReader.java:614) at 
microsoft.exchange.webservices.data.notification.GetEventsResults.loadFromXml(GetEventsResults.java:117) at com.ews.listeners.Notification.doPost(Notification.java:120) at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:710) at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263) at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:5
84) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at 
java.lang.Thread.run(Unknown Source)"

Please help me so that i can read push notification response from inputstream