groovy/grails: exception on uploading xml file

I tried to get and parse an xml file sent an upload from the gsp view. The file is correctly sent by the client but when I tried to parse it I have an exception.

------WebKitFormBoundaryPTpPKdL3WQWaPzJp-- (The filename, directory name, or volume label syntax is incorrect). Stacktrace follows: Message: ------WebKitFormBoundaryPTpPKdL3WQWaPzJp Content-Disposition: form-data; name="file"; filename="myfile.xml"

gsp:

    <form enctype="multipart/form-data" method="post" action="uploadXml">
         <input type="file" name="file" id="file" />
        <input type="submit">
    </form>

controller:

    def project = new XmlParser().parse(request.reader.text)

Thanks