topic Re: Cross domain request.... in ArcGIS JavaScript Maps SDK Questions

Cross domain request....

GISAdmin1 — Sun, 25 Jul 2010 03:47:07 GMT

I would like to retrieve the JSON results of a REST identify request using something like a xmlhttprequest. The problem is, my ArcGIS Server is not on the same domain, so, my request will fail (cross domain). Does anyone have any suggestions on how to grab the JSON from a REST call and use it via Javascript?

Thanks in advance,

M

Re: Cross domain request....

RahulRavikumar — Sat, 11 Dec 2021 20:10:19 GMT

This has already been baked into the JavaScript API. You can use an esri namespace method called "esri.request(...)"

The full API reference documentation for the method is at : http://http://help.arcgis.com/en/webapi/javascript/arcgis/help/jsapi/namespace_esri.htm#request

esri.request({
  url:"http://..../rest/services/USA/MapServer", 
  content: {
    param1: "value1",
    param2: "value2",
    param3: "value3"
  },
  callbackParamName:"callback",
  load:function(response, io) {
    ...
  }, 
  error:esriConfig.defaults.io.errorHandler
});

Re: Cross domain request....

__Rich_ — Mon, 26 Jul 2010 08:21:36 GMT

(I'm not sure Rahul's understood the issue you're facing?)

You'll need to satisfy 'same origin policy', you could achieve this by employing a proxy, e.g. the 'stock' proxy page should be be all you require for your particular needs.

HTH 🙂

Re: Cross domain request....

DavidHollema — Sat, 11 Dec 2021 20:10:22 GMT

When you say this has been "baked into the JavaScript API"...I'm curious what that means? How are cross-domain requests performed without a proxy page? Is it using jsonp and script tag injection?

This has already been baked into the JavaScript API. You can use an esri namespace method called "esri.request(...)"

The full API reference documentation for the method is at : http://http://help.arcgis.com/en/webapi/javascript/arcgis/help/jsapi/namespace_esri.htm#request
esri.request({
  url:"http://..../rest/services/USA/MapServer", 
  content: {
    param1: "value1",
    param2: "value2",
    param3: "value3"
  },
  callbackParamName:"callback",
  load:function(response, io) {
    ...
  }, 
  error:esriConfig.defaults.io.errorHandler
});