Hi Richard
I don't think it's a character encoding problem. Facebook creates many
millions of these links each day. If there were an encoding problem the
internet would be full of it.
Furthermore, I ran into the same (I think) problem a few months ago. I
found that xwiki claims all parameters starting in 'action_'. After finding
the problem, Vincent was so kind as to point me to:
In ActionFilter.java:
> ...
> if (parameter.startsWith(ACTION_PREFIX)) {
> …
> where:
> /** The query property name prefix that indicates the target action. */
> private static final String ACTION_PREFIX = "action_";
> This code is in a Filter. FTR here's its javadoc:
> * A filter that dispatches requests to the right action, depending on the
> button that was pressed in the editing form.
> * This is needed since the browser cannot send the form data to different
> URLs depending on the button pressed, and an
> * XHTML form has only one target URL. In previous versions of XWiki this
> was accomplished using javascript code, with a
> * fall-back on a pseudo-dispatcher inside the {@link PreviewAction}, which
> was on obvious case of bad code design.
> * </p>
> * <p>
> * The filter dispatches requests based on the presence of a request
> parameter starting with <tt>action_</tt> followed
> * by the name of the struts action that should actually process the
> request. For example, the button that does
> * <tt>Save and Continue</tt> looks like:
> *
> * <pre>
> * <input type="submit"
> name="action_saveandcontinue" value="..."/>
> * </pre>
> *
> * As a result, when clicking the button, the request is not sent to the
> form's target (<tt>preview</tt>), but is
> * actually forwarded internally to
> <tt>/bin/saveandcontinue/The/Document</tt>.
> * </p>
You can find our "solution" for the problem on
https://github.com/celements/celements-core/blob/dev/src/main/java/com/xpn/xwiki/web/ActionFilterFBHack.java(needsDispatch-90:99)
Be aware that this is not a good (robust) solution, but a quick fix just
for these Facebook links and there is no guarantee that sooner or later a
similar problem will not pop up again.
Hope this helps.
Edo
On Wed, Jan 22, 2014 at 2:43 PM, [email protected] <[email protected]>wrote:
> Hi Richard,
>
> Indeed, the { character needs to be escaped. check section 2.4.3 of the
> spec at http://www.ietf.org/rfc/rfc2396.txt, specifically:
>
> ------
> Other characters are excluded because gateways and other transport
> agents are known to sometimes modify such characters, or they are
> used as delimiters.
>
> unwise = "{" | "}" | "|" | "\" | "^" | "[" | "]" | "`"
>
> Data corresponding to excluded characters must be escaped in order to
> be properly represented within a URI.
> ------
>
> Thanks
> -Vincent
>
> On 22 Jan 2014 at 14:28:42, Richard Hierlmeier ([email protected]
> (mailto:[email protected])) wrote:
>
> >
> > Hi Vincent,
> >
> > I get the following exception:
> >
> > java.net.URISyntaxException: Illegal character in query at index 160:
> > http://
> ???????????????????????????/bin/ref_map/Main/WebHome?fb_action_ids=22334241213413241&fb_action_types=og.likes&fb_source=feed_opengraph&action_object_map={%22334241213413241%22%3A211180592403908}&action_type_map={%22334241213413241%22%3A%22og.likes%22}&action_ref_map=[]
> > at java.net.URI$Parser.fail(URI.java:2829)
> > at java.net.URI$Parser.checkChars(URI.java:3002)
> > at java.net.URI$Parser.parseHierarchical(URI.java:3092)
> > at java.net.URI$Parser.parse(URI.java:3034)
> > at
> >
> > It's the { character after action_type_map.
> >
> > Do I have a character encoding problem?
> >
> > The XWiki instance is running in tomcat behind a Apache http instance.
> > It is connection via mod_proxy and ajp. Here is my Apache configuration:
> >
> > ProxyPreserveHost On
> > ProxyPass / ajp://localhost:9080/
> > ProxyPassReverse / http://???????????????????????????/
> >
> > Here ist the ajp connector configuration from server.conf
> >
> > > maxThreads="20" URIEncoding="UTF-8"/>
> >
> >
> > Thank you
> >
> > Richard
> >
> >
> > Am 22.01.2014 13:54, schrieb Vincent Massol:
> > > Hi Richard,
> > >
> > > On 21 Jan 2014, at 21:07, Richard Hierlmeier wrote:
> > >
> > >>
> > >> I have a Facebook like Button on my xwiki instance. When clicking on
> the button in facebook the following link is created:
> > >>
> > >> http://
> /bin/view/Main/Sample?fb_action_ids=22334241213413241&fb_action_types=og.likes&fb_source=feed_opengraph&action_object_map={%22334241213413241%22%3A211180592403908}&action_type_map={%22334241213413241%22%3A%22og.likes%22}&action_ref_map=[]
> > >>
> > >> However XWiki can not handle this link correctly. When clicking on it
> I get the following error message (it's in german language):
> > >>
> > >>> Hinweis
> > >>>
> > >>> Während der Verarbeitung Ihrer Anfrage trat ein Problem auf. Bitte
> > >>> verständigen Sie den Webmaster, falls der Fehler erneut auftritt.
> > >>
> > >> How can I solve this problem?
> > >
> > > I don’t see any reason why XWiki would care about anything put after
> the ? unless it contains a parameter that xwiki uses (like “rev”).
> > >
> > > What error do you get in the xwiki logs?
> > >
> > > Thanks
> > > -Vincent
> > >
> > > _______________________________________________
> > > users mailing list
> > > [email protected]
> > > http://lists.xwiki.org/mailman/listinfo/users
> > >
> >
> > _______________________________________________
> > users mailing list
> > [email protected]
> > http://lists.xwiki.org/mailman/listinfo/users
> _______________________________________________
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>
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