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javaxmluploadimgur

uploading to imgur, have failed for a week now


I have been trying to get this right and probably read a hundred SO posts about it, however, I still haven't got it right and am afraid i'm doing something really stupid. (using the apache commons codec library)

    import java.awt.*;
    import java.awt.image.BufferedImage;
    import java.io.*;
    import java.net.*;
    import javax.imageio.ImageIO;
    import org.apache.commons.codec.binary.Base64;

    public class UploadTest
    {
        public static void main (String[] args)
        {
            try
            {
                File pic = new File ("C:\\pic.jpg");
                upload ( (BufferedImage) ImageIO.read (pic)   );
            }
            catch (Exception e)
            {
                System.out.println("Error: " + e.getMessage() );
                e.printStackTrace();
            }
        }

        public static void upload(BufferedImage image)
        {
            String IMGUR_POST_URI = "http://api.imgur.com/2/upload.xml";
            String IMGUR_API_KEY = "my_api_key";

            try 
            {
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                System.out.println("Writing image...");
                ImageIO.write(image, "png", baos);
                URL url = new URL(IMGUR_POST_URI);

                System.out.println("Encoding...");
                String data = URLEncoder.encode("image", "UTF-8") + "=" + URLEncoder.encode(Base64.encodeBase64String(baos.toByteArray()).toString(), "UTF-8");
                data += "&" + URLEncoder.encode("key", "UTF-8") + "=" + URLEncoder.encode(IMGUR_API_KEY, "UTF-8");

                System.out.println("Connecting...");
                URLConnection conn = url.openConnection();
                conn.setDoOutput(true);
                OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());

                System.out.println("Sending data...");
                wr.write(data);
                wr.flush();

                System.out.println("Finished.");

                //just display the raw response
                BufferedReader in = new BufferedReader (new InputStreamReader (conn.getInputStream()) );
                String line;
                while ( (line = in.readLine()) != null      )
                {
                    System.out.println(line);
                }
                in.close();

            } 
            catch(Exception e)
            {
                System.out.println("Error: " + e.getMessage() );
                e.printStackTrace();
            }
        }
    }

Ok so this is my output:

    Writing image...
    Encoding...
    Connecting...
    Sending data...
    Finished.
    Error: Server returned HTTP response code: 400 for URL:     http://imgur.com/api/upload.xml
    java.io.IOException: Server returned HTTP response code: 400 for URL: http://imgur.com/api/upload.xml
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1615)
    at UploadTest.upload(UploadTest.java:52)
at UploadTest.main(UploadTest.java:15)

I'm not sure what the problem is and I have doubts that its not even uploading, even though no errors are being thrown


Solution

  • Try -->

    public static void upload(BufferedImage image) {
        String IMGUR_POST_URI = "https://api.imgur.com/3/upload";
        String IMGUR_API_KEY = "Your Client ID";
    
        try {
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            System.out.println("Writing image...");
            ImageIO.write(image, "png", baos);
            URL url = new URL(IMGUR_POST_URI);
    
            System.out.println("Encoding...");
            String data = URLEncoder.encode("image", "UTF-8") + "=" + URLEncoder.encode(Base64.encodeBase64String(baos.toByteArray()).toString(), "UTF-8");
            data += "&" + URLEncoder.encode("key", "UTF-8") + "=" + URLEncoder.encode(IMGUR_API_KEY, "UTF-8");
    
            System.out.println("Connecting...");
            URLConnection conn = url.openConnection();
            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setRequestProperty("Authorization", "Client-ID " + IMGUR_API_KEY);
            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
    
            OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
    
            System.out.println("Sending data...");
            wr.write(data);
            wr.flush();
    
            System.out.println("Finished.");
    
            //just display the raw response
            BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                System.out.println(line);
            }
            in.close();
    
        } catch (Exception e) {
            System.out.println("Error: " + e.getMessage());
            e.printStackTrace();
        }
    }