I have to convert docx file format (which is in openXML format) into JSON format. I need some guidelines to do it. Thanks in advance.
I've used docx4j before, and it's worth taking a look at.
You could also check out my open source unXml-library that is available on Maven Central.
It is lightweight, and has a simple syntax to pick out XPaths from your xml, and get them returned as Json attributes in a Jackson ObjectNode.