AngularJS - File Download through AJAX

Question

I created an angular js program for downloading a file from the server here follows the code

HTML Code

Answer 1

I have faced the similar issue for downloading files such as .pdf, .xls, .xlsx etc through Ajax.

Its a fact that we cant download files through Ajax, even though i came up with a solution which downloads files through Ajax like.

You can use jquery.fileDownload - A jQuery File Download Plugin for Ajax like, feature rich file downloads.

Demo Working

Server Side

I am using Spring at the server side

@RequestMapping(value = "exportXLS", method = RequestMethod.POST, produces = APP_JSON)
@ResponseBody
public void getCSV(final HttpServletResponse response, @RequestParam(value = "empId", required = true) final String empId) throws IOException, Exception
{
    final byte[] csv = ExportXLSUtil.getFileBytes(empId); // get the file bytes
    final OutputStream output = getOutputStream(response);
    response.setHeader("Content-Disposition", "attachment; filename=documents_" + new DateTime() + ".xls");
    response.setContentType(CONTENT_TYPE);
    response.setContentLength(csv.length);
    write(output, csv);
}

Client Side

At the client side, I am using AngularJS

$downloadXLS = function(id)
{
    $.fileDownload('/user/exportXLS', 
    {
        httpMethod : "POST",
        data : {
            empId : id
        }
    }).done(function(e, response)
    {
     // success
    }).fail(function(e, response)
    {
     // failure
    });
}

Download Link - jquery.fileDownload.js

Answer 2

I created a more angular way solution. The server has to provide content-type and content-disposition if you want to sync with server info, although you could add type and download properties manually.

 vm.export = function () {
            //PopUps.showLoading()
            $http.get(Url).then(function (result) {
                //PopUps.hideLoading()
                var headers = result.headers()
                var blob = new Blob([result.data], { type: headers['content-type'] })
                var windowUrl = (window.URL || window.webkitURL)
                var downloadUrl = windowUrl.createObjectURL(blob)
                var anchor = document.createElement("a")
                anchor.href = downloadUrl
                var fileNamePattern = /filename[^;=\n]*=((['"]).*?\2|[^;\n]*)/
                anchor.download = fileNamePattern.exec(headers['content-disposition'])[1]
                document.body.appendChild(anchor)
                anchor.click()
                windowUrl.revokeObjectURL(blob)
            })
        }