【发布时间】:2017-10-16 16:21:08
【问题描述】:
我正在开发一个应用程序,它将使用名为“imdb-datasets”的亚马逊 aws s3 imdb 存储桶来显示各种电影信息。在尝试这个之前,我用我自己的存储桶测试了代码,并设法从我的安卓设备上传和下载一个测试文件到我的存储桶,反之亦然。但是在使用 imdb-datasets 存储桶尝试相同的方法时,我开始收到拒绝访问错误 403。在做了一些研究后,我发现可能的问题是我必须在代码中指定它是请求者支付的存储桶.我试图实现请求者支付位(注释掉的代码),但它使我的应用程序崩溃。我不知道如何在我的应用程序中实现它,因为我没有找到任何指南或解决方案。任何想法如何做到这一点?
编辑:我还授予应用程序访问存储的权限,包括通过清单和通过 android 设备设置在应用程序中手动访问。还分配了具有 iam 用户和 imdb 存储桶的角色策略。
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
import com.amazonaws.auth.CognitoCachingCredentialsProvider;
import com.amazonaws.mobileconnectors.s3.transferutility.TransferListener;
import com.amazonaws.mobileconnectors.s3.transferutility.TransferObserver;
import com.amazonaws.mobileconnectors.s3.transferutility.TransferState;
import com.amazonaws.mobileconnectors.s3.transferutility.TransferUtility;
import com.amazonaws.regions.Region;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3Client;
import java.io.File;
public class movieChooseActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_movie_choose);
}
public void getFile(View v) {
File sdcard = Environment.getExternalStorageDirectory();
String key = "documents/v1/current/title.basics.tsv.gz";
File file = new File(key, "title.basics.tsv.gz");
// Initialize the Amazon Cognito credentials provider
CognitoCachingCredentialsProvider credentialsProvider = new
CognitoCachingCredentialsProvider(
getApplicationContext(),
"eu-west-2:4c829519-0596-4fdb-ad04-6b8912e44164", // Identity
//pool ID
Regions.EU_WEST_2 // Region
);
AmazonS3 s3 = new AmazonS3Client(credentialsProvider);
s3.setRegion(Region.getRegion(Regions.US_EAST_1));
//include the appropriate request-payer parameter
//s3.getObject(new GetObjectRequest("imdb-datasets",
key).withRequesterPays(true));
TransferUtility transferUtility = new TransferUtility(s3,
getApplicationContext());
TransferObserver transferObserver = transferUtility.download("imdb-
datasets","title.basics.tsv.gz",file);
transferObserver.setTransferListener(new TransferListener() {
@Override
public void onStateChanged(int i, TransferState state) {
Log.e("statechange",state + " ");
if(state == state.COMPLETED) {
Toast.makeText(movieChooseActivity.this, "File transfered",
Toast.LENGTH_LONG).show();
}
if(state == state.FAILED) {
Toast.makeText(movieChooseActivity.this, "Failed",
Toast.LENGTH_LONG).show();
}
}
@Override
public void onProgressChanged(int i, long l, long l1) {
}
@Override
public void onError(int i, Exception e) {
Log.e("whattowatchapp","Error:"+ e.getMessage());
}
});
}
}
【问题讨论】:
-
确保您没有存储的运行时权限问题。不知道然后请谷歌
标签: java android-studio amazon-s3 amazon imdb