Returning JSONP instead of JSON from a JSP

Question

I found this question on setting the response type to json from a jsp but I\'m in need of setting the response type to jsonp for cross-domain access. Would it still be this:

Answer 1

I recently had to do this. In the server side I had something like so:

string callbackName = queryMap['callback']; //jquery will pass in some name in our .getJSON call below
string jsonData = getJsonData();
string jsonp = callbackName + "(" + jsonData + ")";

response.SetContentType('application/javascript');
response.Send( jsonp );

And in the javascript it was something like so:

var url = getUrl() + "?callback=?";
$.getJSON(url,function(onSuccessData){ alert(onSuccessData); });

Answer 2

jsp:

 String str = "{\"appNo\":\"" + "2" + .....+ "\"}";
    String json = "m1(" + str + ")";
    response.getWriter().write(json);

html:

 $.ajax({
          type: 'GET',    
          url: url,
          dataType: "jsonp",
          crossDomain: true,          
          cache:false,
           jsonp:"callback",
          success: function(data){  }....
   });

This is the code for my jsp

Answer 3

To support cross-domain access in javascript you can use $.support.cors = true;
Other than that you can set content-type to application/javascript for jsonp.