文件下载对我不起作用

Question

我有一个链接https://www.pivotaltracker.com/file_attachments/47755990/download来下载docx文件。当我在为我正确下载的浏览器文件上点击此URL但是当我尝试使用Android代码下载时，它对我不起作用。我的代码如下：

public JSONObject postRequest(String url) {
    OutputStream output;
    InputStream inputStream = null;
    String result = "";
    JSONObject response = null ;
    File file = null;
    HttpResponse httpResponse;
    try {
        String directoryPath = "SirConrad";
        File newFolder = new File(Environment.getExternalStorageDirectory(), directoryPath);
        if (!newFolder.exists()) {
            newFolder.mkdir();
        }
        try {

             file = new File(newFolder, "sachsd.docx");
            file.createNewFile();
        } catch (Exception ex) {
            System.out.println("ex: " + ex);
        }
        HttpClient httpclient = new DefaultHttpClient();
            HttpGet httpGet = new HttpGet(url);
                httpGet.addHeader("accessToken","29c1322d3072d8fadbf2478c61fb6ff6");
               httpGet.addHeader("content_type","application/vnd.openxmlformats-officedocument.wordprocessingml.document");
                //httpGet.addHeader("UserID", "4");

            httpResponse = httpclient.execute(httpGet);


        // 9. receive response as inputStream
        inputStream = httpResponse.getEntity().getContent();

        output = new FileOutputStream(file);

        byte data[] = new byte[4096];
        long total = 0;
        int count;
        while ((count = inputStream.read(data)) != -1) {
            output.write(data, 0, count);
        }
    } catch (Exception e) {
        Log.d("InputStream", e.getLocalizedMessage());
    }

    // 11. return result
    return response;
}

P.S Link http://pp.sirconrad.com/img/EDDYAdminPanelDesignBreakdown.docx让我在上面的代码中下载附件，但是。

注意*我正在使用Pivotal Traker apis下载此文件。