亚马逊网络服务S3访问被拒绝

2 回答

• 0

  您需要为 transferUtility.upload() 方法提供桶名称 ascentserver 而不是 http://ascentserver.s3.eu-west-2.amazonaws.com ，并确保 AmazonS3Client 使用正确的区域而不是默认区域，方法是将 endpoints 显式设置为 s3.setEndpoint("s3.eu-west-2.amazonaws.com") .

  例如：

  CognitoCachingCredentialsProvider credProvider = new CognitoCachingCredentialsProvider(
      getApplicationContext(),    
      "YOUR_COGNITO_POOL_ID",    
      Regions.EU_WEST_2           
  );
  
  AmazonS3 s3 = new AmazonS3Client(credProvider);
  s3.setEndpoint("s3.eu-west-2.amazonaws.com");
  
  TransferUtility transferUtility = new TransferUtility(s3, getApplicationContext());
  
  TransferObserver transferObserver = transferUtility.upload(
      "ascentserver",
      "TEST.png",
      fileToUpload
  );
  
  .
  .
  .
  

  回复于 2024-05-10T20:39:39+08:00
• 0

  所以我们使用的代码如下：注意这些只是片段，而不是整个代码

  [主要]

  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 MainActivity extends AppCompatActivity
      implements NavigationView.OnNavigationItemSelectedListener {
  
  File fileToUpload = new     File("/storage/emulated/0/Pictures/Screenshots/TEST.png");
  File fileToDownload = new File("/storage/emulated/0/Download/TEST");
  AmazonS3 s3;
  TransferUtility transferUtility;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
      setSupportActionBar(toolbar);
  
      // callback method to call credentialsProvider method
      credentialsProvider();
  
      // callback method to call the setTransferUtility method
      setTransferUtility();
  }
  
  public void credentialsProvider(){
  
      // Initialize the Amazon Cognito credentials provider
      CognitoCachingCredentialsProvider credentialsProvider = new CognitoCachingCredentialsProvider(
              getApplicationContext(),
              "eu-west-1:0e33dea3-6075-4ea5-a268-b0c1364f5107", // Identity Pool ID
              Regions.EU_WEST_1 // Region
      );
  
      setAmazonS3Client(credentialsProvider);
  }
  
  public void setAmazonS3Client(CognitoCachingCredentialsProvider credentialsProvider){
  
      // Create an S3 client
      s3 = new AmazonS3Client(credentialsProvider);
  
      // Set the region of your S3 bucket
      s3.setRegion(Region.getRegion(Regions.EU_WEST_1));
  
  }
  
  public void setTransferUtility(){
  
      transferUtility = new TransferUtility(s3, getApplicationContext());
  }
  
  public void setFileToUpload(){
  
      TransferObserver transferObserver = transferUtility.upload(
              "http://ascentserver.s3.eu-west-2.amazonaws.com",     /* The bucket to upload to */
              "TEST.png",    /* The key for the uploaded object */
              fileToUpload       /* The file where the data to upload exists */
      );
  
      transferObserverListener(transferObserver);
  }
  
  public void setFileToDownload(){
  
      TransferObserver transferObserver = transferUtility.download(
              "http://ascentserver.s3.eu-west-2.amazonaws.com",     /* The bucket to download from */
              "TEST.png",    /* The key for the object to download */
              fileToDownload        /* The file to download the object to */
      );
  
      transferObserverListener(transferObserver);
  
  }
  
  public void transferObserverListener(TransferObserver transferObserver){
  
      // listener that provides status of download
      transferObserver.setTransferListener(new TransferListener(){
  
          @Override
          public void onStateChanged(int id, TransferState state) {
              Log.e("statechange", state+"");
          }
  
          @Override
          public void onProgressChanged(int id, long bytesCurrent, long bytesTotal) {
              int percentage = (int) (bytesCurrent/bytesTotal * 100);
              Log.e("percentage",percentage +"");
          }
  
          @Override
          public void onError(int id, Exception ex) {
              Log.e("error","error");
          }
  
      });
  }
  }
  

  [依赖性]

  compile 'com.amazonaws:aws-android-sdk-core:2.2.13'
  compile 'com.amazonaws:aws-android-sdk-cognito:2.2.13'
  compile 'com.amazonaws:aws-android-sdk-s3:2.2.13'
  compile 'com.amazonaws:aws-android-sdk-ddb:2.2.13'
  

  [表现]

  <uses-permission android:name="android.permission.INTERNET"/>
  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
  
  <service
          android:name="com.amazonaws.mobileconnectors.s3.transferutility.TransferService"
          android:enabled="true" />
  

  回复于 2024-05-10T20:39:39+08:00