2015-09-30 153 views

回答

1

以下代码是将视频上传到服务器的后台任务示例。没有什么特定的Android Studio - 无论您的IDE是Eclipse还是Studio(或其他任何东西),它都应该可以工作。

import java.io.File; 
import java.io.IOException; 
import java.io.UnsupportedEncodingException; 
import org.apache.http.HttpEntity; 
import org.apache.http.HttpResponse; 
import org.apache.http.client.ClientProtocolException; 
import org.apache.http.client.HttpClient; 
import org.apache.http.client.methods.HttpPost; 
import org.apache.http.entity.mime.HttpMultipartMode; 
import org.apache.http.entity.mime.MultipartEntity; 
import org.apache.http.entity.mime.content.FileBody; 
import org.apache.http.entity.mime.content.StringBody; 
import org.apache.http.impl.client.DefaultHttpClient; 
import org.apache.http.util.EntityUtils; 

import android.os.AsyncTask; 
import android.util.Log; 

public class VideoUploadTask extends AsyncTask<String, String, Integer> { 
    /* This Class is an AsynchTask to upload a video to a server on a background thread 
    * 
    */ 

    private VideoUploadTaskListener thisTaskListener; 
    private String serverURL; 
    private String videoPath; 

    public VideoUploadTask(VideoUploadTaskListener ourListener) { 
     //Constructor 
     Log.d("VideoUploadTask","constructor"); 

     //Set the listener 
     thisTaskListener = ourListener; 
    } 

    @Override 
    protected Integer doInBackground(String... params) { 
     //Upload the video in the background 
     Log.d("VideoUploadTask","doInBackground"); 

     //Get the Server URL and the local video path from the parameters 
     if (params.length == 2) { 
      serverURL = params[0]; 
      videoPath = params[1]; 
     } else { 
      //One or all of the params are not present - log an error and return 
      Log.d("VideoUploadTask doInBackground","One or all of the params are not present"); 
      return -1; 
     } 


     //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; 
     } 

     //Shut down the connection manager 
     httpclient.getConnectionManager().shutdown(); 
     return 1; 
    } 

    @Override 
    protected void onPostExecute(Integer result) { 
     //Check the return code and update the listener 
     Log.d("VideoUploadTask onPostExecute","updating listener after execution"); 
     thisTaskListener.onUploadFinished(result); 
    } 

} 
+0

这可以通过loopj android-async-http库完成吗? –

+0

我个人没有用过,但没有理由不。如果你今天选择了一个HTTP库,那么查看Volley和Retrofit也许是有意义的。 – Mick