Android使用socket.io将图像作为二进制流发送-Java 学习之路

伙计们，我想在android上使用node.js＆socket.io将图像发送到服务器作为二进制流，任何人都可以帮忙吗？

1 回答

Android中有几个库可以上传大型文件，如图像和视频 . 除非你把它作为一种学习经验，否则使用其中之一几乎肯定会更容易 . 最近的一些包括：

较旧的库是apache MultiPartMine库 - 请参阅此处的示例，而不是图像，但适用相同的原则：

//Create a new Multipart HTTP request to upload the video
        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost(serverURL);

        //Create a Multipart entity and add the parts to it
        try {
            Log.d("VideoUploadTask doInBackground","Building the request for file: " + videoPath);
            FileBody filebodyVideo = new FileBody(new File(videoPath));
            StringBody title = new StringBody("Filename:" + videoPath);
            StringBody description = new StringBody("Test Video");
            MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
            reqEntity.addPart("videoFile", filebodyVideo);
            reqEntity.addPart("title", title);
            reqEntity.addPart("description", description);
            httppost.setEntity(reqEntity);
        } catch (UnsupportedEncodingException e1) {
            //Log the error
            Log.d("VideoUploadTask doInBackground","UnsupportedEncodingException error when setting StringBody for title or description");
            e1.printStackTrace();
            return -1;
        }

        //Send the request to the server
        HttpResponse serverResponse = null;
        try {
            Log.d("VideoUploadTask doInBackground","Sending the Request");
            serverResponse = httpclient.execute( httppost );
        } catch (ClientProtocolException e) {
            //Log the error
            Log.d("VideoUploadTask doInBackground","ClientProtocolException");
            e.printStackTrace();
        } catch (IOException e) {
            //Log the error
            Log.d("VideoUploadTask doInBackground","IOException");
            e.printStackTrace();
        }

        //Check the response code
        Log.d("VideoUploadTask doInBackground","Checking the response code");
        if (serverResponse != null) {
            Log.d("VideoUploadTask doInBackground","ServerRespone" + serverResponse.getStatusLine());
            HttpEntity responseEntity = serverResponse.getEntity( );
            if (responseEntity != null) {
                //log the response code and consume the content
                Log.d("VideoUploadTask doInBackground","responseEntity is not null");
                try {
                    responseEntity.consumeContent( );
                } catch (IOException e) {
                    //Log the (further...) error...
                    Log.d("VideoUploadTask doInBackground","IOexception consuming content");
                    e.printStackTrace();
                }
            } 
        } else {
            //Log that response code was null
            Log.d("VideoUploadTask doInBackground","serverResponse = null");
            return -1;
        }

这里有完整的例子：https://stackoverflow.com/a/32887541/334402

同样，在节点端，您可以使用标准库来上载文件 . 一个例子是集合：

Multer是一个用于处理multipart / form-data的node.js中间件，主要用于上传文件 . 它写在busboy之上，以实现最高效率 .

有一个经过测试（尽管几年前......）的例子：https://stackoverflow.com/a/41567587/334402

如果您确实想编写自己的服务器端解析器，那么在这个答案中有一些很好的最新信息：https://stackoverflow.com/a/23718166/334402

回复于 2024-04-26T09:22:12+08:00

Android使用socket.io将图像作为二进制流发送

1 回答

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