Java:从多部分 POST 请求获取视频文件

Question

我正在将视频文件作为多部分请求从我的 Android 客户端发布到我的服务器。我需要编写一个服务器端方法来接收以下请求。

• 我使用 Jersey 作为服务器端框架

我的代码如下:

private void send_video_to_server(String videoPath) throws ParseException, IOException {

        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost("http://MY_SERVER_URL/videos/postvideo");

        FileBody filebodyVideo = new FileBody(new File(videoPath));
        StringBody title = new StringBody(titleBox.getText().toString());
        StringBody description = new StringBody(captionBox.getText().toString());

        MultipartEntity reqEntity = new MultipartEntity();
        reqEntity.addPart("videoFile", filebodyVideo);
        reqEntity.addPart("title", title);
        reqEntity.addPart("description", description);
        httppost.setEntity(reqEntity);

        // DEBUG
        System.out.println( "executing request " + httppost.getRequestLine( ) );
        HttpResponse response = httpclient.execute( httppost );
        HttpEntity resEntity = response.getEntity( );

        // DEBUG
        System.out.println( response.getStatusLine( ) );
        if (resEntity != null) {
            System.out.println( EntityUtils.toString( resEntity ) );
        } // end if

        if (resEntity != null) {
            resEntity.consumeContent( );
        } // end if

        httpclient.getConnectionManager( ).shutdown( );
    }

如何编写SERVER端代码来RECEIVE上述请求？ 方法签名足以回答:)

Answer 1

问题到底是什么？不知道 Jersey，但步骤是:

1) 编写一个 servlet ( http://www.tutorialspoint.com/servlets/servlets-first-example.htm )

2) Servlet 输入参数 HttpServletRequest 包含 getParts() 方法，您可以在其中找到您发布的视频...以及其他部分(如果有)

编辑

未经测试，但这对您有帮助吗？您应该能够像这样获取视频数据流。

protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException
    {
        Collection parts = req.getParts();
        for (Part part : parts) {
            //... determine if its a file part from content disposition for example
            InputStream is = part.getInputStream();
            //...work with your input stream
        }
    }

详细示例请看spring是如何实现的: See spring way