使用POST方法上传Android文件

Question

如何将使用POST方法上传的简单Android文件写入PHP服务器

Answer 1

请下载HttpComponents并将其添加到您的Android项目中.如果要使用POST方法上传文件,则必须使用Multipart.

  private DefaultHttpClient mHttpClient;


    public ServerCommunication() {
        HttpParams params = new BasicHttpParams();
        params.setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);
        mHttpClient = new DefaultHttpClient(params);
    }


    public void uploadUserPhoto(File image) {

        try {

            HttpPost httppost = new HttpPost("some url");

            MultipartEntity multipartEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);  
            multipartEntity.addPart("Title", new StringBody("Title"));
            multipartEntity.addPart("Nick", new StringBody("Nick"));
            multipartEntity.addPart("Email", new StringBody("Email"));
            multipartEntity.addPart("Description", new StringBody(Settings.SHARE.TEXT));
            multipartEntity.addPart("Image", new FileBody(image));
            httppost.setEntity(multipartEntity);

            mHttpClient.execute(httppost, new PhotoUploadResponseHandler());

        } catch (Exception e) {
            Log.e(ServerCommunication.class.getName(), e.getLocalizedMessage(), e);
        }
    }

    private class PhotoUploadResponseHandler implements ResponseHandler {

        @Override
        public Object handleResponse(HttpResponse response)
                throws ClientProtocolException, IOException {

            HttpEntity r_entity = response.getEntity();
            String responseString = EntityUtils.toString(r_entity);
            Log.d("UPLOAD", responseString);

            return null;
        }

    }

来源:使用Android SDK发布多部分请求

另请阅读本教程以获取AsyncTask示例.AsyncTask有点难以编码,但如果您不使用它,您的应用程序将在主线程中上传文件.您的应用程序将在上传文件时冻结,如果花费的时间超过5秒,Android会说您的应用程序没有响应.如果您使用AsyncTask下载/上传文件,Android会创建一个新的线程,您的应用程序将不会冻结.

请注意,如果您使用多个AsyncTasks,Android将在当时执行AsyncTasks,您无法同时运行多个AsyncTasks,但在大多数情况下您不必执行.