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/fd821bf488c9a9d3?hl=en# 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.
