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Posted to users@ws.apache.org by "Janardhanan, Suresh B" <Su...@duke-energy.com> on 2012/01/24 16:07:44 UTC

RE: Axis client - adding CDATA XML string to request

Andreas,

Thank you very much for your suggestion. Yes, if I pass just the XML without the CDATA Begin and End Tag the .Net web service comes back with a valid response.
<PARAMETERS><RETURN><GENERALINFORMATION><INFORMATIONRETURNTYPEID>3294f665bc644359bfd15824d2efe29c</INFORMATIONRETURNTYPEID></GENERALINFORMATION></RETURN></PARAMETERS>

I am not sure why that's the case. The reason the .Net web service has CDATA Begin and End tag wrapped around the XML is to treat it as a string value, even if It is not a well-formed XML. I am working on testing this solution against all the WSDL Operations and check if works correctly.

Thanks again for your direction.

Suresh

Hi,

I generated my web services client using Apache Axis v2.1.6.1. The .Net target web service has the following in its WSDL -

<wsdl:part name="sXmlParameters" type="s:string" />

I am expected to set the following string for sXmlParameters.
xmlParameters=<![CDATA[<PARAMETERS><RETURN><GENERALINFORMATION><INFORMATIONRETURNTYPEID>3294f665bc644359bfd15824d2efe29c</INFORMATIONRETURNTYPEID></GENERALINFORMATION></RETURN></PARAMETERS>

When it is sent through Apache Axis client, the XML characters <, > are getting converted -
[main] DEBUG httpclient.wire.content  - >> "<?xml version='1.0' encoding='UTF-8'?><soapenv:Envelope xmlns:soapenv="http://www.w3.org/2003/05/soap-envelope"><soapenv:Body><ns1:RetrieveByParameter xmlns:ns1="http://wsdl.echelon.com/Panoramix/"><sKey>e1839da0c11c4058928b650f97c06853</sKey><sIDTypeID>f76e5d708edd464593bb031f646990b6</sIDTypeID><sID>100063728</sID><sXmlParameters>&lt;![CDATA[&lt;PARAMETERS>&lt;RETURN>&lt;GENERALINFORMATION>&lt;INFORMATIONRETURNTYPEID>3294f665bc644359bfd15824d2efe29c&lt;/INFORMATIONRETURNTYPEID>&lt;/GENERALINFORMATION>&lt;/RETURN>&lt;/PARAMETERS>]]&gt;</sXmlParameters></ns1:RetrieveByParameter></soapenv:Body></soapenv:Envelope>"

Is there any way to send the XML string as is?

I also tried changing the WSDL type, which resulted in an Exception.

This is what I changed in the WSDL - changed sXmlParameters type=s:string to xmlStingType as shown below.
      <wsdl:types>
            <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
                  targetNamespace="http://wsdl.echelon.com/Panoramix/">
                  <xsd:complexType name="xmlStringType">
                        <xsd:sequence>
                              <xsd:any xmlns:xsd="http://www.w3.org/2001/XMLSchema"/>
                        </xsd:sequence>
                  </xsd:complexType>
            </xsd:schema>
      </wsdl:types>
<wsdl:part name="sXmlParameters" type="tns:xmlStringType" />

Code Snippet:
XmlStringType xmlStrType = new XmlStringType();
      OMElement element = AXIOMUtil.stringToOM(xmlParameters);
      xmlStrType.setExtraElement(element);

Stack Trace:
Caused by:
org.apache.axiom.om.OMException: com.ctc.wstx.exc.WstxUnexpectedCharException: Unexpected character 'C' (code 67) (CDATA not allowed in prolog/epilog)
at [row,col {unknown-source}]: [1,3]
  Stack Trace:
        org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:297)
        org.apache.axiom.om.impl.llom.OMDocumentImpl.getOMDocumentElement(OMDocumentImpl.java:111)
        org.apache.axiom.om.impl.builder.StAXOMBuilder.getDocumentElement(StAXOMBuilder.java:571)
        org.apache.axiom.om.impl.builder.StAXOMBuilder.getDocumentElement(StAXOMBuilder.java:567)
        org.apache.axiom.om.util.AXIOMUtil.stringToOM(AXIOMUtil.java:54)
        org.apache.axiom.om.util.AXIOMUtil.stringToOM(AXIOMUtil.java:39)

Any help is much appreciated.

Thanks,
Suresh


Re: Axis client - adding CDATA XML string to request

Posted by Andreas Veithen <an...@gmail.com>.
Any string that can be represented using a CDATA section can also be
represented as simple element content, provided that '<' and '&'
characters are correctly escaped, i.e. replaced by &lt; and &amp; (in
your case the XML serializer takes care of this). The converse is
actually not true, i.e. there are strings that can't be represented
using a CDATA section. That means that you will never get into a
situation where a CDATA section is required, except of course if the
service explicitly checks that a CDATA section is used. That however
is extremely unlikely for services deployed on a decent SOAP stack
(including .NET), and the test you have done shows that this is not
the case here.

Andreas

On Tue, Jan 24, 2012 at 16:07, Janardhanan, Suresh B
<Su...@duke-energy.com> wrote:
> Andreas,
>
>
>
> Thank you very much for your suggestion. Yes, if I pass just the XML without
> the CDATA Begin and End Tag the .Net web service comes back with a valid
> response.
>
> <PARAMETERS><RETURN><GENERALINFORMATION><INFORMATIONRETURNTYPEID>3294f665bc644359bfd15824d2efe29c</INFORMATIONRETURNTYPEID></GENERALINFORMATION></RETURN></PARAMETERS>
>
>
>
> I am not sure why that’s the case. The reason the .Net web service has CDATA
> Begin and End tag wrapped around the XML is to treat it as a string value,
> even if It is not a well-formed XML. I am working on testing this solution
> against all the WSDL Operations and check if works correctly.
>
>
>
> Thanks again for your direction.
>
>
>
> Suresh
>
>
>
> Hi,
>
>
>
> I generated my web services client using Apache Axis v2.1.6.1. The .Net
> target web service has the following in its WSDL –
>
>
>
> <wsdl:part name="sXmlParameters" type="s:string" />
>
>
>
> I am expected to set the following string for sXmlParameters.
>
> xmlParameters=<![CDATA[<PARAMETERS><RETURN><GENERALINFORMATION><INFORMATIONRETURNTYPEID>3294f665bc644359bfd15824d2efe29c</INFORMATIONRETURNTYPEID></GENERALINFORMATION></RETURN></PARAMETERS>
>
>
>
> When it is sent through Apache Axis client, the XML characters <, > are
> getting converted –
>
> [main] DEBUG httpclient.wire.content  - >> "<?xml version='1.0'
> encoding='UTF-8'?><soapenv:Envelope
> xmlns:soapenv="http://www.w3.org/2003/05/soap-envelope"><soapenv:Body><ns1:RetrieveByParameter
> xmlns:ns1="http://wsdl.echelon.com/Panoramix/"><sKey>e1839da0c11c4058928b650f97c06853</sKey><sIDTypeID>f76e5d708edd464593bb031f646990b6</sIDTypeID><sID>100063728</sID><sXmlParameters>&lt;![CDATA[&lt;PARAMETERS>&lt;RETURN>&lt;GENERALINFORMATION>&lt;INFORMATIONRETURNTYPEID>3294f665bc644359bfd15824d2efe29c&lt;/INFORMATIONRETURNTYPEID>&lt;/GENERALINFORMATION>&lt;/RETURN>&lt;/PARAMETERS>]]&gt;</sXmlParameters></ns1:RetrieveByParameter></soapenv:Body></soapenv:Envelope>"
>
>
>
> Is there any way to send the XML string as is?
>
>
>
> I also tried changing the WSDL type, which resulted in an Exception.
>
>
>
> This is what I changed in the WSDL - changed sXmlParameters type=s:string to
> xmlStingType as shown below.
>
>       <wsdl:types>
>
>             <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
>
>                   targetNamespace="http://wsdl.echelon.com/Panoramix/">
>
>                   <xsd:complexType name="xmlStringType">
>
>                         <xsd:sequence>
>
>                               <xsd:any
> xmlns:xsd="http://www.w3.org/2001/XMLSchema"/>
>
>                         </xsd:sequence>
>
>                   </xsd:complexType>
>
>             </xsd:schema>
>
>       </wsdl:types>
>
> <wsdl:part name="sXmlParameters" type="tns:xmlStringType" />
>
>
>
> Code Snippet:
>
> XmlStringType xmlStrType = new XmlStringType();
>
>       OMElement element = AXIOMUtil.stringToOM(xmlParameters);
>
>       xmlStrType.setExtraElement(element);
>
>
>
> Stack Trace:
>
> Caused by:
>
> org.apache.axiom.om.OMException:
> com.ctc.wstx.exc.WstxUnexpectedCharException: Unexpected character 'C' (code
> 67) (CDATA not allowed in prolog/epilog)
>
> at [row,col {unknown-source}]: [1,3]
>
>   Stack Trace:
>
>
> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:297)
>
>
> org.apache.axiom.om.impl.llom.OMDocumentImpl.getOMDocumentElement(OMDocumentImpl.java:111)
>
>
> org.apache.axiom.om.impl.builder.StAXOMBuilder.getDocumentElement(StAXOMBuilder.java:571)
>
>
> org.apache.axiom.om.impl.builder.StAXOMBuilder.getDocumentElement(StAXOMBuilder.java:567)
>
>         org.apache.axiom.om.util.AXIOMUtil.stringToOM(AXIOMUtil.java:54)
>
>         org.apache.axiom.om.util.AXIOMUtil.stringToOM(AXIOMUtil.java:39)
>
>
>
> Any help is much appreciated.
>
>
>
> Thanks,
>
> Suresh
>
>