Greetings:
I'm beginning to think it isn't possible for CF 9.01 to return JSONP? I am
using jQuery 1.10.2 on a client to request a JSONP object. See the following
HTML (client-side):
var jqxhr = $.getJSON( "WeatherFeedJsonp.cfc?callback=?"
, {method: "get5DayForecastJsonp", latitude: "33.76", longitude:
"-84.42"}
, function(data) { loadData(data); } // callback function
)
.fail(function(jqxhr, textStatus, error) {
var err = textStatus + ", " + err; alert(err);
});
The WeatherFeedJsonp.cfc method get5DayForecastJsonP is coded (server-side):
<cffunction name="get5DayForecastJsonp" access="remote" returntype="array"
returnFormat="JSON">
<cfargument name="latitude" type="Numeric" required="true"/>
<cfargument name="longitude" type="Numeric" required="true"/>
<cfset var data = get5DayForecastXml(latitude, longitude)/> <!---
returns NOAA XML weather feed --->
<cfset var data = xmlParse(data)/>
<cfset var xmlRoot = data['dwml']['data']/>
<cfset var weather = arrayNew(1)/>
<!---
.
.
.
loop through the XML data variable that contains the 5 day forecast from NOAA
and create an array of daily weather forecast in the "weather" variable"
.
.
.
--->
<cfreturn weather/>
</cffunction>
I added
<cfset this.secureJSON = true>
<cfset this.secureJSONPrefix = "// ">
to application.cfc .
On the client, I tested by visiting the URL:
http://myservername.org/componentName.cfc?method=get5DayForecastJsonp&latitude=...
And I get a nice looking JSON string back:
//
[{"ICON":"hi_shwrs50.jpg","LOTEMP":"62","PCTRAINNITE":"48","CONDITIONS":"Chance
Rain
Showers","DATE":"2013-12-05","PCTRAINDAY":"54","HITEMP":"72"},{"ICON":"hi_shwrs80.jpg","LOTEMP":"49","PCTRAINNITE":"80","CONDITIONS":"Rain
Showers
Likely","DATE":"2013-12-06","PCTRAINDAY":"72","HITEMP":"75"},{"ICON":"ra.jpg","LOTEMP":"47","PCTRAINNITE":"80","CONDITIONS":"Drizzle","DATE":"2013-12-07","PCTRAINDAY":"70","HITEMP":"54"},{"ICON":"ra80.jpg","LOTEMP":"53","PCTRAINNITE":"67","CONDITIONS":"Rain","DATE":"2013-12-08","PCTRAINDAY":"80","HITEMP":"56"},{"ICON":"hi_shwrs70.jpg","LOTEMP":"40","PCTRAINNITE":"49","CONDITIONS":"Rain
Showers Likely","DATE":"2013-12-09","PCTRAINDAY":"70","HITEMP":"61"}]
But when I execute the code with the $.getJSON call via HTML I get an error. In
FireBug I get a 200 OK and the data appears as XHR not JavaScript. I know that
the content type returned in the response must be text/javascript, so I used
<cfcontent type="text/javascript; charset=UTF-8" />
In the CFC component body. The content-type response header says
"text/javascript", but it still shows up as XHR.
Has anyone implemented a JSONP feed with CF 9? What am I missing?
Sincerely, Brooks
________________________________
Brooks Wilson | Senior Web Developer Programmer/Analyst
Technology Solutions Services | Application Delivery Services
Federal Reserve Bank of Atlanta | 1000 Peachtree Street, Atlanta, GA
30309-4470
Phone: 404.498.8178 | Fax: 404.498.8239 | Mobile: 404.985.9270
Email: brooks.wil...@atl.frb.org<mailto:brooks.wil...@atl.frb.org>
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