Binary files corrupted – How to Download Binary Files with AngularJS

How to Download Binary Files with AngularJS

When downloading binary files, it is important to set the responseType:

app.service('VerDocServices',['$http',function($http) {

    this.downloadFile = function(url, file, urlDir) {
        var config = {
            //SET responseType
            responseType: 'blob',
            params : {
                file : file,
                urlDir : urlDir
            }
         };

        return $http.get(url, config)
          .then(function(response) {
            return response.data;
        }).catch(function(response) {
            console.log("ERROR: ", response.status);
            throw response;
        }); 
    }; 
}]);

If the responseType is omitted the XHR API defaults to converting UTF-8 encoded text to DOMString (UTF-16) which will corrupt PDF, image, and other binary files.

For more information, see MDN Web API Reference – XHR ResponseType