Question

我尝试从android客户端上传文件到Django视图但在上传该请求时.FILES始终为空这是我的django视图代码： views.py

def vw_reception_uploadimage(request, phonenumber):


    if request.method == 'POST':
            print request.META
            try:
                imagePath = '/home/user/Pictures/' + str(int(time.time() * 1000)) + '.jpg'
                destination = open(imagePath, 'wb+')
                for chunk in request.FILES["uploadedfile"].chunks():
                        destination.write(chunk)
                destination.close()
            except Exception as e:
                print e
                print request.FILES
            return HttpResponse("ok")

这是我的服务器文件上传AsyncTask： class ServerFileUploadTask扩展了AsyncTask {

    HttpURLConnection connection = null;  
    DataOutputStream outputStream = null;  
    DataInputStream inputStream = null;  

    String lineEnd = "\r\n";  
    String twoHyphens = "--";  
    String boundary = "----*****";  


    private Activity activity;
    private String filepath;
    ServerFileUploadTask(Activity activity,String filepath)
    {
        this.activity=activity;
        this.filepath=filepath;
    }


    @Override  
    protected Void doInBackground(String... uri) {  

        long length = 0;  
        int progress;  
        int bytesRead, bytesAvailable, bufferSize;  
        byte[] buffer;  
        int maxBufferSize = 2048 * 1024;// 256KB  

        try {  
            FileInputStream fileInputStream = new FileInputStream(new File(  
                    filepath));  
            File uploadFile = new File(this.filepath);  
            long totalSize = uploadFile.length(); // Get size of file, bytes  
            URL url = new URL(uri[0]);  
            connection = (HttpURLConnection) url.openConnection();  

            // Set size of every block for post  
            connection.setChunkedStreamingMode(2048 * 1024);// 256KB  

            // Allow Inputs & Outputs  
            connection.setDoInput(true);  
            connection.setDoOutput(true);  
            connection.setUseCaches(false);  

            // Enable POST method  
            connection.setRequestMethod("POST");  
            if(PrefSingleton.getInstance().readPreference("token", null)!=null){
                connection.setRequestProperty("AUTHORIZATION" , "Token "+PrefSingleton.getInstance().readPreference("token", null));
                }
            connection.setRequestProperty("Connection", "Keep-Alive");  
            connection.setRequestProperty("Charset", "UTF-8");  
            connection.setRequestProperty("Content-Type",  
                    "multipart/form-data; boundary=" + boundary);  

            outputStream = new DataOutputStream(  
                    connection.getOutputStream());  


            outputStream  
                    .writeBytes(twoHyphens + boundary + lineEnd+"Content-Disposition: form-data; name=\"uploadedfile\"; filename=\""  
                            + this.filepath + "\"" + lineEnd);  
            outputStream.writeBytes(lineEnd);  

            bytesAvailable = fileInputStream.available();  
            bufferSize = Math.min(bytesAvailable, maxBufferSize);  
            buffer = new byte[bufferSize];  

            // Read file  
            bytesRead = fileInputStream.read(buffer, 0, bufferSize);  

            while (bytesRead > 0) {  
                outputStream.write(buffer, 0, bufferSize);  
                length += bufferSize;  
                progress = (int) ((length * 100) / totalSize);  
                publishProgress(progress);  

                bytesAvailable = fileInputStream.available();  
                bufferSize = Math.min(bytesAvailable, maxBufferSize);  
                bytesRead = fileInputStream.read(buffer, 0, bufferSize);  
            }  
            outputStream.writeBytes(lineEnd);  
            outputStream.writeBytes(twoHyphens + boundary + twoHyphens  
                    + lineEnd);  


            // Responses from the server (code and message)  
            int serverResponseCode = connection.getResponseCode();  
            String serverResponseMessage = connection.getResponseMessage();  

fileInputStream.close();  
            outputStream.flush();  
            outputStream.close();  

        } catch (Exception ex) {  


        }  
        return null;  
    }  



    @Override  
    protected void onPostExecute(Void result) {  

    }  

}

我尝试了大多数示例但没有成功，其中大部分都使用了已弃用的方法和类

我在端口8080上使用Django 1.7和开发服务器

也使用Android 4.2版还有其他一些使用httpentity和http实体构建器的示例那对我不起作用

Answer 1

我无法通过上述代码找到解决方案但最终通过使用解决了问题 Android异步Http客户端库

http://loopj.com/android-async-http/

从android客户端上传文件时清空Request.FILES

1 个答案: