Solve problem with “&” in Message Mapping (Without java mapping in NWDS)

[arrezende]

Problem

Maybe when you execute a message mappping with the character & the error  "Unable to display tree view; Error when parsing an XML document (The entity name must immediately follow the '&' in the entity reference.)" is returned.



The solution for this problem is simple, just develop the java mapping for change the character & by &. 

 

Solution

In your Message Mapping, in the tab Functions copy and past the code below int the area Attributes and Methods, (or if you prefer, create a java mapping in NWDS with the same code, works the same way).

 

public void transform(TransformationInput transformationInput, TransformationOutput transformationOutput) throws StreamTransformationException {

	try {

		InputStream inputstream = transformationInput.getInputPayload().getInputStream();

		OutputStream outputstream = transformationOutput.getOutputPayload().getOutputStream();



		byte[] b = new byte[inputstream.available()];

		inputstream.read(b);

		String encoding ="UTF-8";

		String inputXML=new String(b);



		inputXML = inputXML.replaceAll("&(?!amp;)", "&");

		outputstream.write(inputXML.getBytes(encoding));



	} catch (Exception exception) {

		getTrace().addDebugMessage(exception.getMessage());

		throw new StreamTransformationException(exception.toString());

	}

}

 

Test

Open your Message Mapping (or operation mapping if you create a jar in NWDS), in Text View, fill the field with the & and run a test.



I hope I have collaborated with the community, and I await your feedback.