通过Httppost将图像上传到服务器

Question

如何通过电脑或相机在服务器上传图像？

我尝试this link的代码，但它显示了这样的

Error:(329, 24) error: cannot access AbstractBody class file for org.apache.james.mime4j.message.AbstractBody not found

Answer 1

您可以上传图像到服务器使用http后多部分。这里是帮助你的链接。

https://vikaskanani.wordpress.com/2011/01/11/android-upload-image-or-file-using-http-post-multi-part/

http://www.codejava.net/java-se/networking/upload-files-by-sending-multipart-request-programmatically

还有一方式来上传图片，将其转换为Base64和比上传。检查下面的链接。

Android upload image to server using base64

Answer 2

错误，如果你使用异步HTTP作为你的HTTP客户端click-here那么你可以用下面的方法[如果你选择异步HTTP你可以使用此方法] 此方法不仅可以上传图像，还可以用于对服务器进行普通的后调用。

YourFragment.class [这个类中调用http请求]

public class YourFragment extends CommanAbstract 
    { 


    @Override 
     public View onCreateView(LayoutInflater inflater, ViewGroup container, 
       Bundle savedInstanceState) { 
      // TODO Auto-generated method stub 

      View v = inflater.inflate(R.layout.your_layout, container, false); 
      ButterKnife.inject(this, v); 

      return v; 
     } 


    private void linkCall() { 
      // TODO Auto-generated method stub 

      RequestParams params = new RequestParams(); 
      params.put("params1", "value1"); 
      params.put("params2", "value2"); 
//note that "image" tag will be the tag which accepts the file to the server 
      params.put("image", new File("your image path from gallery or camera")); 
      parse(params, 1, your link here, true); 

     } 
    @Override 
     public void parseresult(String response, boolean success, int value) { 
      // TODO Auto-generated method stub 

      switch (value) { 
      case 1: 
       //here you can parse the link response 
       break; 
      } 
     } 

    @Override 
     public void error(String response) { 
      // TODO Auto-generated method stub 
      //error will come here 
     } 

    } 

CommanAbstract类[扩展该类中不断类，你有一个http请求]

public abstract class CommanAbstract extends Fragment{ 

private static final String Url = "your link head here"; 

    public abstract void parseresult(String response, boolean success, int value); 

    public abstract void error(String response); 

    public void parse(RequestParams params, final int value, String link, 
      boolean progrss) { 
     // TODO Auto-generated method 

     AsyncHttpClient client = new AsyncHttpClient(); 
     GlobalFunctions.postApiCall(getActivity(), link, params, client, 
       new HttpResponseHandler() { 

        @Override 
        public void handle(String response, boolean success) { 
         // TODO Auto-generated method stub 

         if (success) { 
          parseresult(response, true, value); 
         } else { 
          error(response); 
          toast("Connection error"); 
         } 
        } 
       }); 
    } 
} 

GlobalFunctions类[此类呼叫http请求]

public class GlobalFunctions { 
    // static ProgressDialog progress; 

    public interface HttpResponseHandler { 
     void handle(String response,boolean failre); 
    } 


    public static void postApiCall(final Context context, final String url, 
      RequestParams params, AsyncHttpClient httpClient, 
      final HttpResponseHandler handler) { 

     httpClient.post(url, params, new AsyncHttpResponseHandler() { 
      @Override 
      public void onFailure(Throwable arg0, String failureResponse) { 
       // TODO Auto-generated method stub 

       super.onFailure(arg0, failureResponse); 
       System.out.println("fail" + failureResponse + "url is" + url); 
       handler.handle(failureResponse,false); 

       // errorToast(context); 
      } 

      @Override 
      public void onSuccess(String response) { 



       handler.handle(response,true); 

      } 
     }); 
    } 

}