Question

我有一个应用程序可以从下拉框（公共共享路径）下载zip文件内容。我使用HttpURLConnection编写下载代码，但它没有按预期工作，而是下载一小部分（下载zip文件显示31 kb但其原始大小为3mb）。我正在附上我的代码。请帮我解决这个问题。

         URL url = new URL("drop box public share url");
        //create the new connection
        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setAllowUserInteraction(false);
        urlConnection.setInstanceFollowRedirects(true);
        urlConnection.setConnectTimeout(5 * 1000);
        urlConnection.setRequestMethod("GET");
        urlConnection.setDoOutput(true);
        urlConnection.setDoInput(true);

        urlConnection.connect();
        File SDCardRoot = Environment.getExternalStorageDirectory();
        File file = new File(SDCardRoot,"/download/sample.zip");
        FileOutputStream fileOutput = new FileOutputStream(file);
        InputStream inputStream = urlConnection.getInputStream();
        int totalSize = urlConnection.getContentLength();
        int downloadedSize = 0;
        //create a buffer...
        byte[] buffer = new byte[1024];
        int bufferLength = 0; 
        while ( (bufferLength = inputStream.read(buffer)) > 0 ) {
                fileOutput.write(buffer, 0, bufferLength);
                                    downloadedSize += bufferLength;
                onProgressUpdate(downloadedSize, totalSize);

        }
        //close the output stream when done
        fileOutput.close();
        inputStream.close();

Answer 1

似乎方法调用：

setDoOuput(true);

使请求成为POST（请参阅 What exactly does URLConnection.setDoOutput() affect?）

删除它似乎解决了这个问题。

Answer 2

尝试使用普通URLConnection而不是HttpURLConnection。并查看输出。

在android中下载Zip文件

2 个答案: