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Microsoft Dynamics AX (Archived)

XmlDocument UTF-8 encoding without BOM (Byte Order Mark)

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Posted on by Rick Hutchison

400

AX 2012 R2 CU7

I am observing that the default output of an Xml document generated in AX is UTF-8 with BOM (Byte Order Mark).

The receiver of the xml file cannot (automatically) process the document because of the 3 BOM characters at the front of the xml file.

The xml file is created using XmlDocument::newBlank().

newBlank has an optional string parameter of encoding which is defaulted to 'utf-8'

How do I change the encoding to utf-8 without BOM? Is there an xslt for default xml documents that can be changed?

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Martin Dráb 237,805 Most Valuable Professional on at

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XML with UTF-8 encoding and BOM is valid (according to XML specification), therefore what's invalid is the receiver. I suggest fixing what's broken.

Although you can use a different encoding in XMLDocument, I don't think it allows omitting BOM. If you really wanted to do it, you would have to write XML by something else (e.g. System.Xml.XmlWriter + UTF8Encoding(false)). Or you could first generate the file and then remove the BOM.

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Rick Hutchison 400 on at

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I agree with the assessment that the receiver should be able to handle XML with and without BOM. The receiver was not willing to make any code changes unfortunately.

A successful alternative was created using TextIo. Here is my solution:

client static void saveXMLOnClient(XmlDocument _xmlDoc, Filename _filename)

{

TextIo textIo;

#File

;

if (_xmlDoc && _filename)

{

textIo = new TextIo(_filename, #IO_WRITE, 437);

textIo.write(_xmlDoc.toString());

// prior code which adds BOM characters at front of XML file.

//_xmlDoc.save(_filename);

}

}

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