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From Josh Holtzman <>
Subject JSONP interceptors
Date Sun, 29 Aug 2010 02:12:00 GMT
With some help from sergeyb and dkulp yesterday, I wrote some very simple
CXF interceptors that enable transparent JSONP capabilities in JAX-RS.  If a
request contains a "jsonp" parameter in the querystring, and the response's
content type is "application/json", the response is wrapped in the callback
specified by the jsonp parameter.

For example, a response from a hypothetical JAX-RS endpoint at /foo.json
looks like this:


The response to the same URL with a jsonp parameter
(/foo.json?jsonp=handleCallback) would look like this:


With jsonp, the /foo.json service can be called from 3rd party browser-based
mashups.  Without it, browsers' same-origin policy limits the usefulness of
the endpoint.  If there is interest in including this functionality in CXF
itself, I'd be happy to submit a patch.


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