yeah, if you are not using cross domain calls, dump the callback
parameter there, it's totally no needed... and if you are not using
cross domain, then you aren't/don't-need-to use or think about "jsonp"
at all
as for mime type of normal json:
application/json
or
text/plain also works for fine (in my experiences anyways)
On Oct 27, 6:49 am, Mark Volkmann <r.mark.volkm...@gmail.com> wrote:
> On Mon, Oct 26, 2009 at 9:58 PM, MorningZ <morni...@gmail.com> wrote:
>
> > if this is your *exact* code
>
> > $.getJSON(url + "?callback?", function (json) {
>
> > then you're missing an equal sign
>
> > $.getJSON(url + "?callback=?", function (json) {
>
> Good catch! Fortunately I had the = in my real code. I just forgot to
> type it in the email.
>
> > As for the rest of your issue of "what to do", this post should help:
>
> >http://groups.google.com/group/jquery-en/browse_thread/thread/fd821bf...
>
> Okay, I think I understand about using jsonp now. I don't think I need
> it in my case though because my call isn't cross-site. So I still have
> these questions:
>
> 1) What should the response type be when using jsonp?
> 2) What should the response type be when not using jsonp? Is that just
> called plain json?
> 3) When not using jsonp, what should the server code return? Still
> JavaScript code that calls the callback function with the json content
> or just the json content?
>
>
>
> > On Oct 26, 8:14 pm, Mark Volkmann <r.mark.volkm...@gmail.com> wrote:
> >> I have some code working that invokes an HTTP service that returns JSON.
> >> From my JavaScript I call the service with:
>
> >> $.getJSON(url + "?callback?", function (json) {
> >> // do something with json here
>
> >> });
>
> >> My service is implemented as a Java servlet with a doGet method.
> >> In that method I:
> >> 1) set the content type of the response to "application/x-javascript".
> >> 2) get the value of the callback parameter
> >> 3) create a Java Map
> >> 4) use the org.json library to convert the map to JSON text
> >> 5) build a string of JavaScript code that calls the callback function,
> >> passing it the JSON
> >> 6) write the string of JavaScript to the response
>
> >> Is this the recommended approach? I was expected that
> >> I wouldn't need to pass the callback function name to the servlet and
> >> could just return the JSON from the servlet instead of a string of
> >> JavaScript code.
>
> --
> R. Mark Volkmann
> Object Computing, Inc.
