How may I modify a XML file without any change like attributes ordering, tag expansion and encoding? (My preference is DOM API)
You could try VTD-XML .
Since this library builds an index while keeping the file content as-is, its manipulation API will allow to "patch" your file while keeping the rest intact.
Using the VTD-XML API, you will be able to navigate your XML like a DOM tree (even using XPath) and do some modifications (insert elements, insert attributes, etc.)
One nice option would be using decentxml
. I've successfully used it before for programmatically changing a few attributes of a hand-writen XML config file without losing the formatting. It's not DOM, though.
This is not possible with DOM, since DOM does not know the attributes' order.
You could use a low-level API such as StAX, javax.xml.stream, but StAX is not exactly comfortable to use.
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