Java xsd validation of xml without namespace

Question

I want to validate an XML file against an XSD schema. The XML files root element does not have any namespace or xsi details. It has no attributes so just <

Answer 1

You have two separate concerns you need to take care of:

1. Declaring the namespace that your document uses.
2. Putting an xsi:schemaLocation attribute in the file to give a hint (!) where the schema is.

You can safely skip the second part, as the location is really only a hint. You cannot skip the first part. The namespace declared in the XML file is matched against the schema. Important, this:

<xml> ... </xml>

Is not the same as this:

<xml xmlns="urn:foo"> ... </xml>

So you need to declare your namespace in the XML document, otherwise it will not correspond to your schema and you will get this error.