Question

The xml file that I got from user may contain the newline character or may not.

So to be usable xml format I have the solution to do by using regex

example:

<?xml version="1.0" encoding="UTF-8"?>
    <Document xmlns="urn:iso:std:iso:20022:tech:xsd">
        <tag1>/* .. more .. */</tag1> /*newline*/
    </Document>

Can anyone tell me how can I do with regex to recognize the xml string there is the newline character at the end of closing </tag>

this approach allow me to more control the xml format and display message back to user.something like your xml file contain newline at the end of closing tag

Answer 1

Are you looking for something like this?

</[^<]*>(?:\r?\n|\r\n?)

See it here on Regexr

I am not sure if it is useful, but this is what its doing:

It searches for a closing tag </[^<]*>, followed by \r?\n or \r\n? where the ? means the character before is optional.