如何上传图像到Amazon S3存储在android系统？ [英] How can I upload an image to Amazon s3 bucket in android?

问题描述

我正在寻找这很长但不getting.I我有密钥和访问键上传，但仍然没能做到。

I am searching for this for a long but not getting.I am having secret key and access key for uploading but still not able to do..

推荐答案

下面是示例code将您获得钥匙＆安培; BUCKET_NAME在code：

Here is sample code Put your won keys & bucket_name in code:

import android.app.ProgressDialog;
import android.content.Context;
import android.os.AsyncTask;

import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.s3.AmazonS3Client;
import com.amazonaws.services.s3.model.CannedAccessControlList;
import com.amazonaws.services.s3.model.PutObjectRequest;
import com.amazonaws.services.s3.model.PutObjectResult;
import com.amazonaws.services.s3.model.ResponseHeaderOverrides;
import com.worldofmoms.networklib.R;
import com.worldofmoms.networklib.listeners.IRequestListener;
import com.worldofmoms.networklib.utils.helpers.LocalLog;
import java.io.File;

public class UploadImageTask  extends AsyncTask<String, Void, String> {
    private ProgressDialog dialog;
    private IRequestListener<Object> mListener;
    private String mRequestTag;
    Context mContext;

    public UploadImageTask(Context context,String requestTag, IRequestListener<Object> listener)
    {
        mContext=context;
        mRequestTag=requestTag;
        this.mListener=listener;
    }
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        dialog = ProgressDialog.show(mContext, null, "", true);
        dialog.setContentView(R.layout.loaders_progress_dialog);
        dialog.setCancelable(false);
    }

    @SuppressWarnings("unused")
    @Override
    protected String doInBackground(String... params) {
        String path = params[0];
        return sendImageToAmazonS3Server(path);
    }

    @Override
    protected void onProgressUpdate(Void... unsued) {}

    @Override
    protected void onPostExecute(String sResponse) {
        if (dialog!=null && dialog.isShowing()) {
            dialog.dismiss();
        }
        this.mListener.onRequestSuccess(mRequestTag, sResponse);
    }

    private String sendImageToAmazonS3Server(String Filepath){
        //String MY_ACCESS_KEY_ID 
        String MY_ACCESS_KEY_ID = "Put Access key";

        //String MY_SECRET_KEY 
        String MY_SECRET_KEY = "Put SECRET_KEY ";


        //String MY_PICTURE_BUCKET 
        String MY_PICTURE_BUCKET = "bucketName";
        //String MY_PICTURE_BUCKET = "wom-profilepics-test";

        String rootUpload = Filepath;
        File file = new File(rootUpload);
        if (file.exists()) {
            String fileExtension="jpg";

            String imageNAME = String.valueOf(System.currentTimeMillis());
            String fileNameToUpload = imageNAME+"."+fileExtension;
            fileNameToUpload=fileNameToUpload.trim();
            try {
            AmazonS3Client s3Client = new AmazonS3Client(new BasicAWSCredentials(MY_ACCESS_KEY_ID, MY_SECRET_KEY));
            // create bucket
            //s3Client.createBucket(MY_PICTURE_BUCKET);
            InputStream input = new URL("https://hi.co/bundles/hitomain/images/hi_big.png?v=1448090952").openStream();
            ObjectMetadata objectMetadata = new ObjectMetadata();
            PutObjectRequest por = new PutObjectRequest(MY_PICTURE_BUCKET,fileNameToUpload,input,objectMetadata);
            por.setCannedAcl(CannedAccessControlList.PublicRead);
            PutObjectResult result = s3Client.putObject(por);

                 LocalLog.d("PATH", "" + fileNameToUpload);

                /*LocalLog.d("putting Object result ",""+ result.getETag()
                        //result.
                        + " MD5 " + result.getContentMd5());*/

                ResponseHeaderOverrides override = new ResponseHeaderOverrides();
                override.setContentType("image/jpeg");

                /*GeneratePresignedUrlRequest urlRequest = new GeneratePresignedUrlRequest( MY_PICTURE_BUCKET,imageNAME );
                urlRequest.setExpiration( new Date(System.currentTimeMillis() + 3600000));  // Added an hour's worth of milliseconds to the current time.
                urlRequest.setResponseHeaders(override);
                URL url = s3Client.generatePresignedUrl( urlRequest );*/
                //LocalLog.d(" S3 SERVER IMAGE PATH = ",""+url.toString());
                String filePathOnServer = "http://"+MY_PICTURE_BUCKET+".s3.amazonaws.com/"+fileNameToUpload;
                LocalLog.d(" S3 SERVER IMAGE PATH = ",""+filePathOnServer);
                return filePathOnServer;
            } catch (Exception e) {
                LocalLog.printStackTrace(e);
                return "";
            }
        } else {
            return "";
        }
    }
}

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