Re: SOAP 2.2 (500 Internal Server Error)

[Ide Roth]

Here is some of the codes.
This the function that send the request message:
public static BufferedReader invoke ( InputSource inMessage )
      throws
         org.apache.soap.SOAPException ,
         org.xml.sax.SAXException ,
         java.io.IOException ,
         java.net.MalformedURLException
   {
      // Construct the envelope to send.

      DOMParser aParser = new DOMParser();
      aParser.parse ( inMessage );
      Document doc = aParser.getDocument();

      if ( doc == null )
      {
         throw new SOAPException (
            Constants.FAULT_CODE_CLIENT, "parsing error" );
      }

      Envelope msgEnv =
         Envelope.unmarshall ( doc.getDocumentElement() );

      // Send the message 

      sLog.debug ( "sending the message ..." );

      final String kURLStr =
         Environment.getKeyValue ( "msgrouter-url" );

      Message msg = new Message();

      msg.send (
         new URL ( kURLStr )            ,
         "urn:this-is-the-action-uri"   ,  // not used for messaging
         msgEnv                         );

      // Wait for and read the response.

      sLog.debug ( "getting SOAP transport ..." );
      SOAPTransport st = msg.getSOAPTransport();

      sLog.debug ( "waiting for response ..." );
      BufferedReader br = st.receive();

      sLog.debug ( "received response" );

      return br;
   }


This the service request fuction that is deployed  on SOAP:

public void requestCustListing (
      Envelope    inEnv       ,
      SOAPContext inRequest   ,
      SOAPContext outResponse )
         throws MessagingException, IOException
   {
      String theParentCust = null;

      try
      {
         Element theRequestElement =
           (Element) inEnv.getBody().getBodyEntries().iterator().next();

         NodeList theRequestSubElements =
           theRequestElement.getElementsByTagName ( "parentCust" );

         if ( theRequestSubElements.getLength() == 0 )
         {
            buildErrorResponse (
               "MISSING_ELEMENT"           ,  // inError
               "parentCust element missing" ,  // inDescription
               outResponse                 ,  // outResponse
               inEnv                       ); // inoutEnv

         logResponse ( inEnv );

            return;
         }
         else
         {
            Element theParentCustlement =
               (Element) theRequestSubElements.item ( 0 );

            theParentCust =
               ( (CharacterData) theParentCustElement.getFirstChild() ).
                  getData();
         }
      }

      catch ( Throwable e )
      {
         final String kErrorMsg =
            "unexpected error encountered while parsing request";

         sLog.error ( kErrorMsg, e );

         buildErrorResponse (
            "REQUEST_PROCESSING_ERROR" ,  // inError
            kErrorMsg                  ,  // inDescription
            outResponse                ,  // outResponse
            inEnv                      ); // inoutEnv

         logResponse ( inEnv );

         return;
      }

      sLog.debug ( "requested parentCust= " + theParentCust );

      try
      {
         // Get a reference to the CustList bean.

         CustListHome theCustListHome =
            (CustListHome) ServiceLocator.lookup (
               CustList.class, CustListHome.class );

         CustList aCustList = theCustListHome.create();

         // Get a list of all Custs known that are associated
         // with the specified parentCust.
         //
         CustListing returnListing = aCustList.getChildCusts ( theParentCust );
         // Build a normal SOAP response.
         //
         buildResponse (
            "responseCustListing" ,
            returnListing        ,
            outResponse          ,
            inEnv                );
      }

      catch ( Throwable e )
      {
         RequestStatus.setError ( e );

         // Build an error response.
         //
         buildErrorResponse ( e, outResponse, inEnv );
      }

      finally
      {
         logResponse ( inEnv );
      }
   }



This is one of the build reponse:

public void buildResponse (
      String      inMsgName   ,
      Object      inContent   ,
      SOAPContext outResponse ,
      Envelope    inoutEnv    )
         throws MessagingException, IOException
   {
      // Create the response.

      Document theDoc = new DocumentImpl();
      Element theResponse =  theDoc.createElement ( inMsgName );

      try
      {
         Marshaller.marshal ( inContent, theResponse );
      }

      catch ( Throwable e )
      {
         sLog.error ( "error building response", e );

         buildErrorResponse (
            "ERROR_BUILDING_RESPONSE" ,  // inError
            e.getMessage()            ,  // inDescription
            outResponse               ,  // outResponse
            inoutEnv                  ); // inoutEnv

         return;
      }

      // Set this response as the content of the envelope.

      Vector theBodyEntries = inoutEnv.getBody().getBodyEntries();
      theBodyEntries.clear();
      theBodyEntries.add ( theResponse );
      StringWriter aWriter = new StringWriter();
      inoutEnv.marshall ( aWriter, null );

      // Send the envelope back to the client.
      //
      outResponse.setRootPart ( aWriter.toString(), "text/xml" );
   }

Ide.

>>> [EMAIL PROTECTED] 03/28/02 12:31PM >>>
I can not tell the problem without having a look at the source code

----- Original Message -----
From: "Ide Roth" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, March 28, 2002 10:27 AM
Subject: SOAP 2.2 (500 Internal Server Error)


Hi,

  I'm trying to do a service request and keep getting an interal server
error.
  The error messages are:
    "500 Internal Server Error"
    "500 Servlet messagrouter: unable to service request: Error building
response envelope: java.lang.NullPointerException."

  Has anyone encounter this problem before?
  Please help.

  Thank you in advance.

  Ide