Parsing XML with nested XML document

Question

I am trying to parse the following XML.

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
   <soap:Body>
      <GetTokenResponse xmlns="http://www.xx.co.uk/Services/Sourcing/xx">
         <GetTokenResult><?xml version="1.0" encoding="utf-8"?><GetTokenResponse xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.xxx.co.uk/Services/xx"><Version /><Header><CorrelationID xmlns="" /><ResponseEndPoint xmlns="" /><ResponseType xmlns="">Response</ResponseType></Header><Errors /><Data><Response><Version xmlns="" /><Token xmlns="">CK-RUWelME68FGRJ3IpSf8MJ2T9XUazdJy-ll3uRzKc</Token><AccessStatus xmlns="">Granted</AccessStatus></Response></Data></GetTokenResponse>></GetTokenResult>
      </GetTokenResponse>
   </soap:Body>
</soap:Envelope>

I have tried parsing it using XmlStreamReader and Doc.Document but as soon as I hit the internal xml document (string inside <GetTokenResult> tag), it's unable to parse it.

Answer 1

If you want to extract the Token alone, you could use a REGEX as opposed to using an XML Parser:

public static final String TOKEN_STRUCTURE = '<Token.*>(.*)</Token>';

public static void extractToken(String xml) {
  Matcher tokenMatcher = Pattern.compile(TOKEN_STRUCTURE).matcher(xml);
  Boolean hasMatches = tokenMatcher.find();

  if(hasMatches) {
    return tokenMatcher.group(1);
  }

  return null;
}