有没有办法直接从google play store获取apk文件？

Question

我需要直接使用java中的包名从google play store下载apk文件。

有多种在线工具可以做类似的事情。

http://www.apksmart.com/

https://apkpure.com/region-free-apk-download

https://apps.evozi.com/apk-downloader/

http://apkleecher.com/

http://apk-downloaders.com/

如果我们提供套餐名称或Google Play网址，则会返回apk下载链接。

我尝试使用java中的链接

String url = https://apkpure.com/google-play-store/com.aws.android/download?from=details

我的代码，

void downloadFromUrl(URL url, String localFilename) throws Exception {
        InputStream is = null;
        FileOutputStream fos = null;

        try {
            URLConnection urlConn = url.openConnection();//connect
            urlConn.addRequestProperty("User-Agent", "Mozilla/4.0");
            is = urlConn.getInputStream();               //get connection inputstream
            fos = new FileOutputStream(localFilename);   //open outputstream to local file

            byte[] buffer = new byte[4096];              //declare 4KB buffer
            int len;

            //while we have availble data, continue downloading and storing to local file
            while ((len = is.read(buffer)) > 0) {
                fos.write(buffer, 0, len);
            }
        } finally {
            try {
                if (is != null) {
                    is.close();
                }
            } finally {
                if (fos != null) {
                    fos.close();
                }
            }
        }
    }

但是上面的代码返回了html页面。但我需要存储下载的apk文件。如何搞定这个？

请提供您的意见。