Encountering cross-domain issues while integrating AngularJS in flex (web control), and trying to retrieve templates/json (local files)

To provide some background on my current endeavor, I am utilizing a Flex application to serve as a container for a web app. Within this Flex app resides a web controller that loads a complete Angularjs application. All necessary files are stored locally within the Flex app.

However, when I attempt to run the application, it encounters difficulty loading the templates. These templates are loaded using the $routeProvider, and data is retrieved using the $http.get method.

The main issue at hand is the inability to fetch local files using JavaScript, despite running the application directly from the file system without a web server involved.

I have also tested the application on Chrome, encountering the exact same issue with the error message:

Origin null is not allowed by Access-Control-Allow-Origin.

In the case of Chrome, this issue can be resolved by utilizing --allow-file-access-from-files, but I am unsure of how to achieve this functionality through the Flex/Flash web controller.

Any assistance offered on this matter would be highly appreciated.

javascriptapache-flexangularjscross-domainlocal-files

Answer №1

Consider configuring a crossdomain policy for your application if you have not already done so.

The issue most likely stems from CORS, as the browser strictly enforces this security measure. In this case, it is the flex web control within the browser causing the problem.

You might need to use a web server to work around this obstacle. When a file request is initiated, the Cross Origin Resource Sharing policy prevents the resource from being loaded unless authorized by the host serving the file. This authorization typically involves an http header like the following:

Access-Control-Allow-Origin: *

Answer №2

Regrettably, it seems unlikely that you will be able to achieve this task. The security measures in place within the Flex engine's web controllers are there for a valid reason; they serve to prevent JavaScript from directly accessing your file system.

There are a couple of potential solutions you could consider:

  • Include a basic web server in your project. You can find guidance on how to do this at

  • Adjust your AngularJS App (including potentially modifying $routeProvider) to utilize the new File API

  • Alternatively, although it may be slightly inconvenient, you could manually copy all template contents into the main file using 

    <script type="text/ng-template" id="some-id"></script>

Answer №3

If you experiment with using $http.jsonp in place of $http.get, be prepared to adjust some angularJS code as well...

Answer №4

It appears that there are at least two ways to render a webpage within Flex. Upon reviewing the documentation for StageWebView, I discovered that the file:// URI scheme supports Local XMLHttpRequests, which is similar to what $http.get accomplishes.

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