Handling change in newlines by XML transformation for CDATA from Java 8 to Java 11
As your code relies on unspecified behavior, extra explicit code seems better:
You want indentation like:
tform.setOutputProperty(OutputKeys.INDENT, "yes");tform.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");However not for elements containing a CDATA.
String xml = result.getWriter().toString();// No indentation (whitespace) for elements with a CDATA section.xml = xml.replaceAll(">\\s*(<\\!\\[CDATA\\[.*?]]>)\\s*</", ">$1</");
The regex uses:
(?s)DOT_ALL to have.match any character, also newline characters..*?the shortest matching sequence, to not match "...]]>...]]>".
Alternatively: In a DOM tree (preserving CDATA) you can retrieve all CDATA sections per XPath, and remove whitespace siblings using the parent element.