Mitko Iliev wrote: > As far as i remember colon is not valid in URI local part, right?
http://tools.ietf.org/html/rfc3986#page-22 seems not to disallow colons in URI paths for HTTP at least: path = path-abempty ; begins with "/" or is empty ... path-abempty = *( "/" segment ) ... segment = *pchar ... pchar = unreserved / pct-encoded / sub-delims / ":" / "@" I'm no expert on this matter though. DBpedia *does* use colons in URIs anyways... I did some quick testing with Firefox; it looks like there's no URLDecoding/URLEncoding going on when following Location: headers in 303 redirects there, so Firefox behaves just like Java does. Also interesting: $ curl -v http://dbpedia.org/resource/X-Men:_Evolution (just normal HTML!) < HTTP/1.1 303 See Other < Location: http://dbpedia.org/page/X-Men:_Evolution No escaping going on here when doing the normal HTML request. So I guess this is a bug in Virtuoso when requesting "application/rdf+xml" (and a somewhat strange bug in curl perhaps). Regards Malte > On May 5, 2010, at 6:05 PM, Malte Kiesel wrote: > >> Hi! >> >> Apparently there's something odd with the 303 redirects for resources >> with ":" in their title. Basically, that seems to work from for example >> curl, but it fails from Java. I'm not sure what component is buggy there. >> >> Example: >> >> $ curl -v -H "Accept: application/rdf+xml" >> http://dbpedia.org/resource/X-Men:_Evolution >> ... >> < HTTP/1.1 303 See Other >> < Content-Location: /data/X-Men%3A_Evolution.xml >> >> $ curl -H "Accept: application/rdf+xml" >> http://dbpedia.org/data/X-Men:_Evolution >> ...is fine. >> >> $ curl -H "Accept: application/rdf+xml" >> http://dbpedia.org/data/X-Men%3A_Evolution >> ...isn't - that strangely returns some foaf triples though (seems these >> are returned for whatever data/ URI you request). >> >> Java seems to get redirected to the latter (broken) URI: >> >> url = "http://dbpedia.org/resource/X-Men:_Evolution";; >> URL urlU = new URL(url); >> HttpURLConnection uc = (HttpURLConnection) urlU.openConnection(); >> uc.setInstanceFollowRedirects(true); >> uc.setRequestProperty("Accept", "application/rdf+xml"); >> uc.connect(); >> InputStream is = uc.getInputStream(); >> int read; >> while ((read = is.read()) != -1) { System.out.write(read); } >> ...outputs the triples the last (broken) curl command also fetches. >> >> Bug in Java? Bug in Virtuoso? >> >> I found a related discussion at [1] but that didn't cover the ":" case. >> >> Regards >> Malte >> >> [1] >> http://www.mail-archive.com/[email protected]/msg00776.html >> >> -- >> Malte Kiesel, DFKI GmbH ------------------------------------------------------------------------------ _______________________________________________ Dbpedia-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
