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Am receiving a SOAP XML response from an endpoint and I am trying to read its' contents. I have tried a couple of methods but it keeps giving me null

String xml = "<?xml version="1.0" encoding="utf-8"?><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><CashOutPaymentRequestResponse xmlns="http://tempuri.org/"><CashOutPaymentRequestResult><ResponseCode>1002</ResponseCode><ResponseDesc>FAC Code and Amount does not match, Contact your Admin.</ResponseDesc></CashOutPaymentRequestResult></CashOutPaymentRequestResponse></soap:Body></soap:Envelope>";

JAXBContext jaxbContext = JAXBContext.newInstance(cashOutPaymentRequestEnvelope.class);
Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();

StringReader reader = new StringReader(xml);
cashOutPaymentRequestEnvelope person = (cashOutPaymentRequestEnvelope) unmarshaller.unmarshal(reader);

My method 2

Element rootdecryptedXml = XmlParseHelper.getStringXml(xml);
String responseUnEscapedXml = StringEscapeUtils.unescapeXml(XmlParseHelper.getString("CashOutPaymentRequestResult", rootdecryptedXml));

String responseEscapedXml = XmlParseHelper.getString("CashOutPaymentRequestResult", rootdecryptedXml);

 System.out.println("step 1.. n" + responseEscapedXml);

 Element root = XmlParseHelper.getStringXml(responseEscapedXml);

 System.out.println("step 2aa...n" + XmlParseHelper.getString("ResponseCode", root));
 System.out.println("step 2bb...n" + XmlParseHelper.getString("ResponseDesc", root));

None of the methods seem to work, they all give me null

My getString function

public static String getString(String tagName, Element element) 
 if (element == null) 
 return " ";
 

 NodeList list = element.getElementsByTagName(tagName);

 if (list != null && list.getLength() > 0) 
 NodeList subList = list.item(0).getChildNodes();
 if (subList != null && subList.getLength() > 0) 
 return subList.item(0).getNodeValue();
 
 
 return " ";

My get StringXml

public static Element getStringXml(String responseXml) throws SAXException, IOException, ParserConfigurationException 
 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
 Document document;
 Element rootdecryptedXml = null;
 DocumentBuilder builder;
 builder = factory.newDocumentBuilder();
 document = builder.parse(new InputSource(new StringReader(responseXml)));
 rootdecryptedXml = document.getDocumentElement();
 return rootdecryptedXml;

Thanks to Michal's comment I developed a solution to this

InputStream is = new ByteArrayInputStream(xml.getBytes());
 MessageFactory factory = MessageFactory.newInstance();
 SOAPMessage message = factory.createMessage(null, is);
 NodeList listResult = message.getSOAPBody().getElementsByTagName("CashOutPaymentRequestResult");
 for (int i = 0; i < listResult.getLength(); i++) 
 NodeList children = listResult.item(i).getChildNodes();
 for (int k = 0; k < children.getLength(); k++) 
 System.out.println(children.item(k).getNodeName());
 System.out.println(children.item(k).getTextContent());
 if (children.item(k).getNodeName().equals("ResponseCode")) 

 

 if (children.item(k).getNodeName().equals("ResponseDesc"))