undefined element declaration 's:schema'
so, searching again a lot, I've found the solution; so using a CXF maven plugin to build the client, will simply look like this:
<execution> <id>generate-sources</id> <phase>generate-sources</phase> <configuration> <wsdloptions> <wsdloption> <wsdl> ../path/to/wsdl </wsdl> <extraargs> <extraarg>-b</extraarg> <extraarg>http://www.w3.org/2001/XMLSchema.xsd</extraarg> ... OTHER EXTRAARGS ... </extraargs> </wsdloption> </wsdloptions> </configuration> <goals> <goal>wsdl2java</goal> </goals> </execution>
Simply add those two extraarg elements to the POM, and that's all. Of course using those same parameters when using CXF via command line will work fine.