I want to download a file with angularjs (1.0.8) from a service Spring. I use a POST request because I have to pass a piece of HTML as parament, and browsers have limitation with length of query string. Here my code:

    $http({

        method: 'POST',

        url: '/export/pdf',

        data: html= + graphHtml.outerHTML,

        headers: {'Content-Type': 'application/x-www-form-urlencoded'},

        transformResponse: function(data, headersGetter){

            return data;

        }

    }).success(function(data) {

        console.log(Type ' + typeof(data) + ');

        var hiddenElement = document.createElement('a');

        hiddenElement.href = 'data:application/pdf,' + data;

        hiddenElement.target = '_blank';

        hiddenElement.download = 'myFile.pdf';

        hiddenElement.click();

    });

I notice that the data received is already in string format! I see many (?) question point, and when type

    typeof(data)

i receive string. I don't want this interpretation of my raw data. When i try to write data in a file, the size is double respect original file! I know it is for string interpretation of binary data that instead wanted read as binary. Has anyone a solution for see data in raw format and not as string?