图片上传亚马逊s3 android SDK 2.0

Question

我想上传一个图像到android的亚马逊s3桶。 我没有得到任何错误，但它只是不工作，任何人都可以帮助我吗？ 我找不到任何关于此的好例子或问题。

我分配到“文件images3”

images3 = new File(uri.getPath()); 

public void addEventToDB(){ 

     Thread thread = new Thread() 
     { 
      @Override 
      public void run() { 
       try { 
        CognitoCachingCredentialsProvider credentialsProvider = new CognitoCachingCredentialsProvider(
          getActivity().getApplicationContext(), // get the context for the current activity 
          "...", 
          "us-east-1:...", 
          "arn:aws:iam::...:role/Cognito_WitpaAuth_DefaultRole", 
          "arn:aws:iam::...:role/Cognito_WitpaAuth_DefaultRole", 
          Regions.US_EAST_1 
        ); 

        String bucket_name = "witpa"; 
        String key = "images.jpeg"; 

        TransferManager transferManager = new TransferManager(credentialsProvider); 
        transferManager.upload(bucket_name, key, images3); 
       } catch (Exception e) { 
        e.printStackTrace(); 
       } 
      } 
     }; 

     thread.start(); 

    } 

我创建了一个水桶形象，在我的权限设置，每个人都可以写和读。

在亚马逊认知我刚刚离开一切为默认。

任何人都知道我如何才能使这个工作？

Answer 1

试试这个。因为我遇到了同样的问题。

我已经通过使用下面的代码修复。

ObjectMetadata metadata = new ObjectMetadata(); 
metadata.setContentEncoding("UTF-8"); 
size = inputStream.available(); 
metadata.setContentLength(size); 
TransferManager transferManager = new TransferManager(credentialsProvider); 
Upload upload = transferManager.upload(bucket_name, key, images3, metadata); 
upload.waitForCompletion(); 

Answer 2

你应该做两个步骤;

1. 像这样创建PutObjectRequestObject：

PutObjectRequest por = new PutObjectRequest(
           BUCKET_NAME, Key, 
           stored); 
         por.setCannedAcl(CannedAccessControlList.PublicReadWrite); 

s3Client.putObject(por); 

更改策略亚马逊S3服务器控制台通过改变桶（文件夹）公共。

我已经做到了，它的工作。

Answer 3

非常简单的方法来下载图像和上传图像在S3亚马逊。你做一个简单的类使用该WebserviceAmazon

public class WebserviceAmazon extends AsyncTask<Void, Void, Void> { 
private String mParams; 
private String mResult = "x"; 
WebServiceInterface<String, String> mInterface; 
private int mRequestType; 
private String UserId; 
private Context mContext; 


public WebserviceAmazon(Context context,String imagePath,String AppId,int type) { 
    this.mContext = context; 
    this.mParams = imagePath; 
    this.mRequestType = type; 
    this.UserId = AppId; 
} 

public void result(WebServiceInterface<String, String> myInterface) { 
    this.mInterface = myInterface; 
} 

@Override 
protected Void doInBackground(Void... params) { 
    String ACCESS_KEY ="abc.."; 
    String SECRET_KEY = "klm..."; 

    try { 
     if (mRequestType == 1) { // POST 
      AmazonS3Client s3Client = new AmazonS3Client(new BasicAWSCredentials(ACCESS_KEY, SECRET_KEY)); 
      PutObjectRequest request = new PutObjectRequest("bucketName", "imageName", new File(mParams)); 
      s3Client.putObject(request); 

      mResult = "success"; 
     } if (mRequestType == 2) { // For get image data 
      AmazonS3Client s3Client = new AmazonS3Client(new BasicAWSCredentials(ACCESS_KEY, SECRET_KEY)); 
      S3Object object = s3Client.getObject(new GetObjectRequest("bucketName", mParams)); 
      S3ObjectInputStream objectContent = object.getObjectContent(); 
      byte[] byteArray = IOUtils.toByteArray(objectContent); 

      Bitmap bitmap = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length); 



      mResult = "success"; 
     } 

    } catch (Exception e) { 
     mResult = e.toString(); 
     e.printStackTrace(); 
    } 
    return null; 
} 

@Override 
protected void onPreExecute() { 
    // TODO Auto-generated method stub 
    super.onPreExecute(); 
} 

@Override 
protected void onPostExecute(Void result) { 
    // TODO Auto-generated method stub 
    super.onPostExecute(result); 
    mInterface.success(this.mResult); 

} 

public interface WebServiceInterface<E, R> { 
    public void success(E reslut); 

    public void error(R Error); 
} 

} 

调用此WebService在任何项目中，

WebserviceAmazon amazon = new WebserviceAmazon(getActivity(), imageName, "", 2); 
    amazon.result(new WebserviceAmazon.WebServiceInterface<String, String>() { 
     @Override 
     public void success(String reslut) { 

     } 

     @Override 
     public void error(String Error) { 

     } 
    }); 

    return totalPoints; 
}