CODEWITHSUNDEEP
javaxmlsoapxml-parsing
Andre Ahmed
Andre Ahmed

Reputation: 1891

XMLStreamReader and UnMarshalling a SOAP Message

I have a problem while decoding SOAP Envelope. Here is my XML 

<?xml version="1.0"?>
<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope" xmlns:tns="http://c.com/partner/">
  <env:Header>c
    <tns:MessageId env:mustUnderstand="true">3</tns:MessageId>
  </env:Header>
  <env:Body>
    <GetForkliftPositionResponse xmlns="http://www.c.com">
      <ForkliftId>PC006</ForkliftId>
     </GetForkliftPositionResponse>
  </env:Body>
</env:Envelope>

I use the following code to decode the body, but it always return to the namespace tns:MessageID, not to the env:body. I also would like to convert the XMLStreamReader to string for debugging issues, is it possible?

   XMLInputFactory xif = XMLInputFactory.newFactory();
        xif.setProperty("javax.xml.stream.isCoalescing", true);  // decode entities into one string

        StringReader reader = new StringReader(Message);
        String SoapBody = "";
        XMLStreamReader xsr = xif.createXMLStreamReader( reader );
        xsr.nextTag(); // Advance to header tag
        xsr.nextTag(); // advance to envelope
        xsr.nextTag(); // advance to body

Upvotes: 2

Views: 2979

Answers (2)

Ian Roberts
Ian Roberts

Reputation: 122364

Initially the xsr is pointing to before the document event (i.e. the XML declaration), and nextTag() advances to the next tag, not the next sibling element:

    xsr.nextTag(); // Advance to opening envelope tag
    xsr.nextTag(); // advance to opening header tag
    xsr.nextTag(); // advance to opening MessageId

If you want to skip to the body a better idiom would be

boolean foundBody = false;
while(!foundBody && xsr.hasNext()) {
  if(xsr.next() == XMLStreamConstants.START_ELEMENT &&
     "http://www.w3.org/2003/05/soap-envelope".equals(xsr.getNamespaceURI()) &&
     "Body".equals(xsr.getLocalName())) {
    foundBody = true;
  }
}

// if foundBody == true, then xsr is now pointing to the opening Body tag.
// if foundBody == false, then we ran out of document before finding a Body

if(foundBody) {
  // advance to the next tag - this will either be the opening tag of the
  // element inside the body, if there is one, or the closing Body tag if
  // there isn't
  if(xsr.nextTag() == XMLStreamConstants.START_ELEMENT) {
    // now pointing at the opening tag of GetForkliftPositionResponse
  } else {
    // now pointing at </env:Body> - body was empty
  }
}

Upvotes: 1

Evgeniy Dorofeev
Evgeniy Dorofeev

Reputation: 136012

After xsr.nextTag() read QName, from there you can get tag name and prefix

QName qname = xsr.getName();
String pref = qname.getPrefix();
String name = qname.getLocalPart();

Upvotes: 1

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