title: null pointer exception on web services
body: <p>I'm facing this issue when calling to a web services. Pls how to solve it.</p>
  
  <pre><code>AxisFault
   faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.userException
   faultSubcode: 
   faultString: java.lang.NullPointerException
   faultActor: 
   faultNode: 
   faultDetail: 
      {http://xml.apache.org/axis/}stackTrace: java.lang.NullPointerException
      at java.util.Hashtable.put(Hashtable.java:396)
      at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.setProperty(SAXParserImpl.java:395)
      at weblogic.xml.jaxp.WebLogicSAXParser.setProperty(WebLogicSAXParser.java:117)
      at weblogic.xml.jaxp.RegistrySAXParser.setProperty(RegistrySAXParser.java:117)
      at org.apache.axis.encoding.DeserializationContextImpl.parse(DeserializationContextImpl.java:246)
      at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:538)
      at org.apache.axis.Message.getSOAPEnvelope(Message.java:376)
      at org.apache.axis.transport.http.HTTPSender.readFromSocket(HTTPSender.java:675)
      at org.apache.axis.transport.http.HTTPSender.invoke(HTTPSender.java:128)
      at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:71)
      at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:150)
      at org.apache.axis.SimpleChain.invoke(SimpleChain.java:120)
      at org.apache.axis.client.AxisClient.invoke(AxisClient.java:180)
      at org.apache.axis.client.Call.invokeEngine(Call.java:2564)
      at org.apache.axis.client.Call.invoke(Call.java:2553)
      at org.apache.axis.client.Call.invoke(Call.java:2248)
      at org.apache.axis.client.Call.invoke(Call.java:2171)
      at org.apache.axis.client.Call.invoke(Call.java:1691)
  </code></pre>
  
  <p>Thanks in Advance..</p>