Utilizzo DeleteObjects con un AWS SDK o una CLI

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Gli esempi di codice seguenti mostrano come utilizzare DeleteObjects.

Gli esempi di operazioni sono estratti di codice da programmi più grandi e devono essere eseguiti nel contesto. È possibile visualizzare questa operazione nel contesto nei seguenti esempi di codice:

• Informazioni di base

• Elimina tutti gli oggetti in un bucket

.NET

AWS SDK for .NET

Nota

C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

Eliminazione di tutti gli oggetti da un bucket Amazon S3.

        /// <summary>
        /// Delete all of the objects stored in an existing Amazon S3 bucket.
        /// </summary>
        /// <param name="client">An initialized Amazon S3 client object.</param>
        /// <param name="bucketName">The name of the bucket from which the
        /// contents will be deleted.</param>
        /// <returns>A boolean value that represents the success or failure of
        /// deleting all of the objects in the bucket.</returns>
        public static async Task<bool> DeleteBucketContentsAsync(IAmazonS3 client, string bucketName)
        {
            // Iterate over the contents of the bucket and delete all objects.
            var request = new ListObjectsV2Request
            {
                BucketName = bucketName,
            };

            try
            {
                ListObjectsV2Response response;

                do
                {
                    response = await client.ListObjectsV2Async(request);
                    response.S3Objects
                        .ForEach(async obj => await client.DeleteObjectAsync(bucketName, obj.Key));

                    // If the response is truncated, set the request ContinuationToken
                    // from the NextContinuationToken property of the response.
                    request.ContinuationToken = response.NextContinuationToken;
                }
                while (response.IsTruncated);

                return true;
            }
            catch (AmazonS3Exception ex)
            {
                Console.WriteLine($"Error deleting objects: {ex.Message}");
                return false;
            }
        }

Eliminare più oggetti da un bucket S3 senza controllo delle versioni.

    using System;
    using System.Collections.Generic;
    using System.Threading.Tasks;
    using Amazon.S3;
    using Amazon.S3.Model;

    /// <summary>
    /// This example shows how to delete multiple objects from an Amazon Simple
    /// Storage Service (Amazon S3) bucket.
    /// </summary>
    public class DeleteMultipleObjects
    {
        /// <summary>
        /// The Main method initializes the Amazon S3 client and the name of
        /// the bucket and then passes those values to MultiObjectDeleteAsync.
        /// </summary>
        public static async Task Main()
        {
            const string bucketName = "amzn-s3-demo-bucket";

            // If the Amazon S3 bucket from which you wish to delete objects is not
            // located in the same AWS Region as the default user, define the
            // AWS Region for the Amazon S3 bucket as a parameter to the client
            // constructor.
            IAmazonS3 s3Client = new AmazonS3Client();

            await MultiObjectDeleteAsync(s3Client, bucketName);
        }

        /// <summary>
        /// This method uses the passed Amazon S3 client to first create and then
        /// delete three files from the named bucket.
        /// </summary>
        /// <param name="client">The initialized Amazon S3 client object used to call
        /// Amazon S3 methods.</param>
        /// <param name="bucketName">The name of the Amazon S3 bucket where objects
        /// will be created and then deleted.</param>
        public static async Task MultiObjectDeleteAsync(IAmazonS3 client, string bucketName)
        {
            // Create three sample objects which we will then delete.
            var keysAndVersions = await PutObjectsAsync(client, 3, bucketName);

            // Now perform the multi-object delete, passing the key names and
            // version IDs. Since we are working with a non-versioned bucket,
            // the object keys collection includes null version IDs.
            DeleteObjectsRequest multiObjectDeleteRequest = new DeleteObjectsRequest
            {
                BucketName = bucketName,
                Objects = keysAndVersions,
            };

            // You can add a specific object key to the delete request using the
            // AddKey method of the multiObjectDeleteRequest.
            try
            {
                DeleteObjectsResponse response = await client.DeleteObjectsAsync(multiObjectDeleteRequest);
                Console.WriteLine("Successfully deleted all the {0} items", response.DeletedObjects.Count);
            }
            catch (DeleteObjectsException e)
            {
                PrintDeletionErrorStatus(e);
            }
        }

        /// <summary>
        /// Prints the list of errors raised by the call to DeleteObjectsAsync.
        /// </summary>
        /// <param name="ex">A collection of exceptions returned by the call to
        /// DeleteObjectsAsync.</param>
        public static void PrintDeletionErrorStatus(DeleteObjectsException ex)
        {
            DeleteObjectsResponse errorResponse = ex.Response;
            Console.WriteLine("x {0}", errorResponse.DeletedObjects.Count);

            Console.WriteLine($"Successfully deleted {errorResponse.DeletedObjects.Count}.");
            Console.WriteLine($"No. of objects failed to delete = {errorResponse.DeleteErrors.Count}");

            Console.WriteLine("Printing error data...");
            foreach (DeleteError deleteError in errorResponse.DeleteErrors)
            {
                Console.WriteLine($"Object Key: {deleteError.Key}\t{deleteError.Code}\t{deleteError.Message}");
            }
        }

        /// <summary>
        /// This method creates simple text file objects that can be used in
        /// the delete method.
        /// </summary>
        /// <param name="client">The Amazon S3 client used to call PutObjectAsync.</param>
        /// <param name="number">The number of objects to create.</param>
        /// <param name="bucketName">The name of the bucket where the objects
        /// will be created.</param>
        /// <returns>A list of keys (object keys) and versions that the calling
        /// method will use to delete the newly created files.</returns>
        public static async Task<List<KeyVersion>> PutObjectsAsync(IAmazonS3 client, int number, string bucketName)
        {
            List<KeyVersion> keys = new List<KeyVersion>();
            for (int i = 0; i < number; i++)
            {
                string key = "ExampleObject-" + new System.Random().Next();
                PutObjectRequest request = new PutObjectRequest
                {
                    BucketName = bucketName,
                    Key = key,
                    ContentBody = "This is the content body!",
                };

                PutObjectResponse response = await client.PutObjectAsync(request);

                // For non-versioned bucket operations, we only need the
                // object key.
                KeyVersion keyVersion = new KeyVersion
                {
                    Key = key,
                };
                keys.Add(keyVersion);
            }

            return keys;
        }
    }

Eliminare più oggetti da un bucket S3 con controllo delle versioni.

    using System;
    using System.Collections.Generic;
    using System.Threading.Tasks;
    using Amazon.S3;
    using Amazon.S3.Model;

    /// <summary>
    /// This example shows how to delete objects in a version-enabled Amazon
    /// Simple StorageService (Amazon S3) bucket.
    /// </summary>
    public class DeleteMultipleObjects
    {
        public static async Task Main()
        {
            string bucketName = "amzn-s3-demo-bucket";

            // If the AWS Region for your Amazon S3 bucket is different from
            // the AWS Region of the default user, define the AWS Region for
            // the Amazon S3 bucket and pass it to the client constructor
            // like this:
            // RegionEndpoint bucketRegion = RegionEndpoint.USWest2;
            IAmazonS3 s3Client;

            s3Client = new AmazonS3Client();
            await DeleteMultipleObjectsFromVersionedBucketAsync(s3Client, bucketName);
        }

        /// <summary>
        /// This method removes multiple versions and objects from a
        /// version-enabled Amazon S3 bucket.
        /// </summary>
        /// <param name="client">The initialized Amazon S3 client object used to call
        /// DeleteObjectVersionsAsync, DeleteObjectsAsync, and
        /// RemoveDeleteMarkersAsync.</param>
        /// <param name="bucketName">The name of the bucket from which to delete
        /// objects.</param>
        public static async Task DeleteMultipleObjectsFromVersionedBucketAsync(IAmazonS3 client, string bucketName)
        {
            // Delete objects (specifying object version in the request).
            await DeleteObjectVersionsAsync(client, bucketName);

            // Delete objects (without specifying object version in the request).
            var deletedObjects = await DeleteObjectsAsync(client, bucketName);

            // Additional exercise - remove the delete markers Amazon S3 returned from
            // the preceding response. This results in the objects reappearing
            // in the bucket (you can verify the appearance/disappearance of
            // objects in the console).
            await RemoveDeleteMarkersAsync(client, bucketName, deletedObjects);
        }

        /// <summary>
        /// Creates and then deletes non-versioned Amazon S3 objects and then deletes
        /// them again. The method returns a list of the Amazon S3 objects deleted.
        /// </summary>
        /// <param name="client">The initialized Amazon S3 client object used to call
        /// PubObjectsAsync and NonVersionedDeleteAsync.</param>
        /// <param name="bucketName">The name of the bucket where the objects
        /// will be created and then deleted.</param>
        /// <returns>A list of DeletedObjects.</returns>
        public static async Task<List<DeletedObject>> DeleteObjectsAsync(IAmazonS3 client, string bucketName)
        {
            // Upload the sample objects.
            var keysAndVersions2 = await PutObjectsAsync(client, bucketName, 3);

            // Delete objects using only keys. Amazon S3 creates a delete marker and
            // returns its version ID in the response.
            List<DeletedObject> deletedObjects = await NonVersionedDeleteAsync(client, bucketName, keysAndVersions2);
            return deletedObjects;
        }

        /// <summary>
        /// This method creates several temporary objects and then deletes them.
        /// </summary>
        /// <param name="client">The S3 client.</param>
        /// <param name="bucketName">Name of the bucket.</param>
        /// <returns>Async task.</returns>
        public static async Task DeleteObjectVersionsAsync(IAmazonS3 client, string bucketName)
        {
            // Upload the sample objects.
            var keysAndVersions1 = await PutObjectsAsync(client, bucketName, 3);

            // Delete the specific object versions.
            await VersionedDeleteAsync(client, bucketName, keysAndVersions1);
        }

        /// <summary>
        /// Displays the list of information about deleted files to the console.
        /// </summary>
        /// <param name="e">Error information from the delete process.</param>
        private static void DisplayDeletionErrors(DeleteObjectsException e)
        {
            var errorResponse = e.Response;
            Console.WriteLine($"No. of objects successfully deleted = {errorResponse.DeletedObjects.Count}");
            Console.WriteLine($"No. of objects failed to delete = {errorResponse.DeleteErrors.Count}");
            Console.WriteLine("Printing error data...");
            foreach (var deleteError in errorResponse.DeleteErrors)
            {
                Console.WriteLine($"Object Key: {deleteError.Key}\t{deleteError.Code}\t{deleteError.Message}");
            }
        }

        /// <summary>
        /// Delete multiple objects from a version-enabled bucket.
        /// </summary>
        /// <param name="client">The initialized Amazon S3 client object used to call
        /// DeleteObjectVersionsAsync, DeleteObjectsAsync, and
        /// RemoveDeleteMarkersAsync.</param>
        /// <param name="bucketName">The name of the bucket from which to delete
        /// objects.</param>
        /// <param name="keys">A list of key names for the objects to delete.</param>
        private static async Task VersionedDeleteAsync(IAmazonS3 client, string bucketName, List<KeyVersion> keys)
        {
            var multiObjectDeleteRequest = new DeleteObjectsRequest
            {
                BucketName = bucketName,
                Objects = keys, // This includes the object keys and specific version IDs.
            };

            try
            {
                Console.WriteLine("Executing VersionedDelete...");
                DeleteObjectsResponse response = await client.DeleteObjectsAsync(multiObjectDeleteRequest);
                Console.WriteLine($"Successfully deleted all the {response.DeletedObjects.Count} items");
            }
            catch (DeleteObjectsException ex)
            {
                DisplayDeletionErrors(ex);
            }
        }

        /// <summary>
        /// Deletes multiple objects from a non-versioned Amazon S3 bucket.
        /// </summary>
        /// <param name="client">The initialized Amazon S3 client object used to call
        /// DeleteObjectVersionsAsync, DeleteObjectsAsync, and
        /// RemoveDeleteMarkersAsync.</param>
        /// <param name="bucketName">The name of the bucket from which to delete
        /// objects.</param>
        /// <param name="keys">A list of key names for the objects to delete.</param>
        /// <returns>A list of the deleted objects.</returns>
        private static async Task<List<DeletedObject>> NonVersionedDeleteAsync(IAmazonS3 client, string bucketName, List<KeyVersion> keys)
        {
            // Create a request that includes only the object key names.
            DeleteObjectsRequest multiObjectDeleteRequest = new DeleteObjectsRequest();
            multiObjectDeleteRequest.BucketName = bucketName;

            foreach (var key in keys)
            {
                multiObjectDeleteRequest.AddKey(key.Key);
            }

            // Execute DeleteObjectsAsync.
            // The DeleteObjectsAsync method adds a delete marker for each
            // object deleted. You can verify that the objects were removed
            // using the Amazon S3 console.
            DeleteObjectsResponse response;
            try
            {
                Console.WriteLine("Executing NonVersionedDelete...");
                response = await client.DeleteObjectsAsync(multiObjectDeleteRequest);
                Console.WriteLine("Successfully deleted all the {0} items", response.DeletedObjects.Count);
            }
            catch (DeleteObjectsException ex)
            {
                DisplayDeletionErrors(ex);
                throw; // Some deletions failed. Investigate before continuing.
            }

            // This response contains the DeletedObjects list which we use to delete the delete markers.
            return response.DeletedObjects;
        }

        /// <summary>
        /// Deletes the markers left after deleting the temporary objects.
        /// </summary>
        /// <param name="client">The initialized Amazon S3 client object used to call
        /// DeleteObjectVersionsAsync, DeleteObjectsAsync, and
        /// RemoveDeleteMarkersAsync.</param>
        /// <param name="bucketName">The name of the bucket from which to delete
        /// objects.</param>
        /// <param name="deletedObjects">A list of the objects that were deleted.</param>
        private static async Task RemoveDeleteMarkersAsync(IAmazonS3 client, string bucketName, List<DeletedObject> deletedObjects)
        {
            var keyVersionList = new List<KeyVersion>();

            foreach (var deletedObject in deletedObjects)
            {
                KeyVersion keyVersion = new KeyVersion
                {
                    Key = deletedObject.Key,
                    VersionId = deletedObject.DeleteMarkerVersionId,
                };
                keyVersionList.Add(keyVersion);
            }

            // Create another request to delete the delete markers.
            var multiObjectDeleteRequest = new DeleteObjectsRequest
            {
                BucketName = bucketName,
                Objects = keyVersionList,
            };

            // Now, delete the delete marker to bring your objects back to the bucket.
            try
            {
                Console.WriteLine("Removing the delete markers .....");
                var deleteObjectResponse = await client.DeleteObjectsAsync(multiObjectDeleteRequest);
                Console.WriteLine($"Successfully deleted the {deleteObjectResponse.DeletedObjects.Count} delete markers");
            }
            catch (DeleteObjectsException ex)
            {
                DisplayDeletionErrors(ex);
            }
        }

        /// <summary>
        /// Create temporary Amazon S3 objects to show how object deletion wors in an
        /// Amazon S3 bucket with versioning enabled.
        /// </summary>
        /// <param name="client">The initialized Amazon S3 client object used to call
        /// PutObjectAsync to create temporary objects for the example.</param>
        /// <param name="bucketName">A string representing the name of the S3
        /// bucket where we will create the temporary objects.</param>
        /// <param name="number">The number of temporary objects to create.</param>
        /// <returns>A list of the KeyVersion objects.</returns>
        private static async Task<List<KeyVersion>> PutObjectsAsync(IAmazonS3 client, string bucketName, int number)
        {
            var keys = new List<KeyVersion>();

            for (var i = 0; i < number; i++)
            {
                string key = "ObjectToDelete-" + new System.Random().Next();
                PutObjectRequest request = new PutObjectRequest
                {
                    BucketName = bucketName,
                    Key = key,
                    ContentBody = "This is the content body!",
                };

                var response = await client.PutObjectAsync(request);
                KeyVersion keyVersion = new KeyVersion
                {
                    Key = key,
                    VersionId = response.VersionId,
                };

                keys.Add(keyVersion);
            }

            return keys;
        }
    }

• Per i dettagli sull'API, consulta la DeleteObjectssezione AWS SDK for .NET API Reference.

Bash

AWS CLI con lo script Bash

Nota

C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

###############################################################################
# function errecho
#
# This function outputs everything sent to it to STDERR (standard error output).
###############################################################################
function errecho() {
  printf "%s\n" "$*" 1>&2
}

###############################################################################
# function delete_items_in_bucket
#
# This function deletes the specified list of keys from the specified bucket.
#
# Parameters:
#       $1 - The name of the bucket.
#       $2 - A list of keys in the bucket to delete.

# Returns:
#       0 - If successful.
#       1 - If it fails.
###############################################################################
function delete_items_in_bucket() {
  local bucket_name=$1
  local keys=$2
  local response

  # Create the JSON for the items to delete.
  local delete_items
  delete_items="{\"Objects\":["
  for key in $keys; do
    delete_items="$delete_items{\"Key\": \"$key\"},"
  done
  delete_items=${delete_items%?} # Remove the final comma.
  delete_items="$delete_items]}"

  response=$(aws s3api delete-objects \
    --bucket "$bucket_name" \
    --delete "$delete_items")

  # shellcheck disable=SC2181
  if [[ $? -ne 0 ]]; then
    errecho "ERROR:  AWS reports s3api delete-object operation failed.\n$response"
    return 1
  fi
}

• Per i dettagli sull'API, consulta DeleteObjects AWS CLICommand Reference.

C++

SDK per C++

Nota

C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

bool AwsDoc::S3::deleteObjects(const std::vector<Aws::String> &objectKeys,
                               const Aws::String &fromBucket,
                               const Aws::S3::S3ClientConfiguration &clientConfig) {
    Aws::S3::S3Client client(clientConfig);
    Aws::S3::Model::DeleteObjectsRequest request;

    Aws::S3::Model::Delete deleteObject;
    for (const Aws::String &objectKey: objectKeys) {
        deleteObject.AddObjects(Aws::S3::Model::ObjectIdentifier().WithKey(objectKey));
    }

    request.SetDelete(deleteObject);
    request.SetBucket(fromBucket);

    Aws::S3::Model::DeleteObjectsOutcome outcome =
            client.DeleteObjects(request);

    if (!outcome.IsSuccess()) {
        auto err = outcome.GetError();
        std::cerr << "Error deleting objects. " <<
                  err.GetExceptionName() << ": " << err.GetMessage() << std::endl;
    } else {
        std::cout << "Successfully deleted the objects.";
        for (size_t i = 0; i < objectKeys.size(); ++i) {
            std::cout << objectKeys[i];
            if (i < objectKeys.size() - 1) {
                std::cout << ", ";
            }
        }

        std::cout << " from bucket " << fromBucket << "." << std::endl;
    }

    return outcome.IsSuccess();
}

• Per i dettagli sull'API, consulta la DeleteObjectssezione AWS SDK for C++ API Reference.

CLI

AWS CLI

Il comando seguente elimina un oggetto da un bucket denominato: amzn-s3-demo-bucket

aws s3api delete-objects --bucket amzn-s3-demo-bucket --delete file://delete.json

delete.jsonè un documento JSON nella directory corrente che specifica l'oggetto da eliminare:

{
  "Objects": [
    {
      "Key": "test1.txt"
    }
  ],
  "Quiet": false
}

Output:

{
    "Deleted": [
        {
            "DeleteMarkerVersionId": "mYAT5Mc6F7aeUL8SS7FAAqUPO1koHwzU",
            "Key": "test1.txt",
            "DeleteMarker": true
        }
    ]
}

• Per i dettagli sull'API, consulta AWS CLI Command DeleteObjectsReference.

Go

SDK per Go V2

Nota

C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

import (
	"bytes"
	"context"
	"errors"
	"fmt"
	"log"
	"time"

	"github.com/aws/aws-sdk-go-v2/aws"
	"github.com/aws/aws-sdk-go-v2/feature/s3/manager"
	"github.com/aws/aws-sdk-go-v2/service/s3"
	"github.com/aws/aws-sdk-go-v2/service/s3/types"
	"github.com/aws/smithy-go"
)

// S3Actions wraps S3 service actions.
type S3Actions struct {
	S3Client  *s3.Client
	S3Manager *manager.Uploader
}



// DeleteObjects deletes a list of objects from a bucket.
func (actor S3Actions) DeleteObjects(ctx context.Context, bucket string, objects []types.ObjectIdentifier, bypassGovernance bool) error {
	if len(objects) == 0 {
		return nil
	}

	input := s3.DeleteObjectsInput{
		Bucket: aws.String(bucket),
		Delete: &types.Delete{
			Objects: objects,
			Quiet:   aws.Bool(true),
		},
	}
	if bypassGovernance {
		input.BypassGovernanceRetention = aws.Bool(true)
	}
	delOut, err := actor.S3Client.DeleteObjects(ctx, &input)
	if err != nil || len(delOut.Errors) > 0 {
		log.Printf("Error deleting objects from bucket %s.\n", bucket)
		if err != nil {
			var noBucket *types.NoSuchBucket
			if errors.As(err, &noBucket) {
				log.Printf("Bucket %s does not exist.\n", bucket)
				err = noBucket
			}
		} else if len(delOut.Errors) > 0 {
			for _, outErr := range delOut.Errors {
				log.Printf("%s: %s\n", *outErr.Key, *outErr.Message)
			}
			err = fmt.Errorf("%s", *delOut.Errors[0].Message)
		}
	} else {
		for _, delObjs := range delOut.Deleted {
			err = s3.NewObjectNotExistsWaiter(actor.S3Client).Wait(
				ctx, &s3.HeadObjectInput{Bucket: aws.String(bucket), Key: delObjs.Key}, time.Minute)
			if err != nil {
				log.Printf("Failed attempt to wait for object %s to be deleted.\n", *delObjs.Key)
			} else {
				log.Printf("Deleted %s.\n", *delObjs.Key)
			}
		}
	}
	return err
}

• Per i dettagli sull'API, consulta la DeleteObjectssezione AWS SDK per Go API Reference.

Java

SDK per Java 2.x

Nota

C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

import software.amazon.awssdk.core.sync.RequestBody;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.s3.S3Client;
import software.amazon.awssdk.services.s3.model.PutObjectRequest;
import software.amazon.awssdk.services.s3.model.ObjectIdentifier;
import software.amazon.awssdk.services.s3.model.Delete;
import software.amazon.awssdk.services.s3.model.DeleteObjectsRequest;
import software.amazon.awssdk.services.s3.model.S3Exception;

import java.util.ArrayList;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 * <p>
 * For more information, see the following documentation topic:
 * <p>
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */

public class DeleteMultiObjects {
    public static void main(String[] args) {
        final String usage = """

            Usage:    <bucketName>

            Where:
               bucketName - the Amazon S3 bucket name.
            """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String bucketName = args[0];
        Region region = Region.US_EAST_1;
        S3Client s3 = S3Client.builder()
            .region(region)
            .build();

        deleteBucketObjects(s3, bucketName);
        s3.close();
    }

    /**
     * Deletes multiple objects from an Amazon S3 bucket.
     *
     * @param s3 An Amazon S3 client object.
     * @param bucketName The name of the Amazon S3 bucket to delete objects from.
     */
    public static void deleteBucketObjects(S3Client s3, String bucketName) {
        // Upload three sample objects to the specfied Amazon S3 bucket.
        ArrayList<ObjectIdentifier> keys = new ArrayList<>();
        PutObjectRequest putOb;
        ObjectIdentifier objectId;

        for (int i = 0; i < 3; i++) {
            String keyName = "delete object example " + i;
            objectId = ObjectIdentifier.builder()
                .key(keyName)
                .build();

            putOb = PutObjectRequest.builder()
                .bucket(bucketName)
                .key(keyName)
                .build();

            s3.putObject(putOb, RequestBody.fromString(keyName));
            keys.add(objectId);
        }

        System.out.println(keys.size() + " objects successfully created.");

        // Delete multiple objects in one request.
        Delete del = Delete.builder()
            .objects(keys)
            .build();

        try {
            DeleteObjectsRequest multiObjectDeleteRequest = DeleteObjectsRequest.builder()
                .bucket(bucketName)
                .delete(del)
                .build();

            s3.deleteObjects(multiObjectDeleteRequest);
            System.out.println("Multiple objects are deleted!");

        } catch (S3Exception e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}

• Per i dettagli sull'API, consulta la DeleteObjectssezione AWS SDK for Java 2.x API Reference.

JavaScript

SDK per JavaScript (v3)

Nota

C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

Elimina più oggetti.

import {
  DeleteObjectsCommand,
  S3Client,
  S3ServiceException,
  waitUntilObjectNotExists,
} from "@aws-sdk/client-s3";

/**
 * Delete multiple objects from an S3 bucket.
 * @param {{ bucketName: string, keys: string[] }}
 */
export const main = async ({ bucketName, keys }) => {
  const client = new S3Client({});

  try {
    const { Deleted } = await client.send(
      new DeleteObjectsCommand({
        Bucket: bucketName,
        Delete: {
          Objects: keys.map((k) => ({ Key: k })),
        },
      }),
    );
    for (const key in keys) {
      await waitUntilObjectNotExists(
        { client },
        { Bucket: bucketName, Key: key },
      );
    }
    console.log(
      `Successfully deleted ${Deleted.length} objects from S3 bucket. Deleted objects:`,
    );
    console.log(Deleted.map((d) => ` • ${d.Key}`).join("\n"));
  } catch (caught) {
    if (
      caught instanceof S3ServiceException &&
      caught.name === "NoSuchBucket"
    ) {
      console.error(
        `Error from S3 while deleting objects from ${bucketName}. The bucket doesn't exist.`,
      );
    } else if (caught instanceof S3ServiceException) {
      console.error(
        `Error from S3 while deleting objects from ${bucketName}.  ${caught.name}: ${caught.message}`,
      );
    } else {
      throw caught;
    }
  }
};

• Per i dettagli sull'API, consulta la DeleteObjectssezione AWS SDK for JavaScript API Reference.

Kotlin

SDK per Kotlin

Nota

C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

suspend fun deleteBucketObjects(
    bucketName: String,
    objectName: String,
) {
    val objectId =
        ObjectIdentifier {
            key = objectName
        }

    val delOb =
        Delete {
            objects = listOf(objectId)
        }

    val request =
        DeleteObjectsRequest {
            bucket = bucketName
            delete = delOb
        }

    S3Client { region = "us-east-1" }.use { s3 ->
        s3.deleteObjects(request)
        println("$objectName was deleted from $bucketName")
    }
}

• Per i dettagli sull'API, DeleteObjectsconsulta AWS SDK for Kotlin API reference.

PHP

SDK per PHP

Nota

C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

Elimina un set di oggetti da un elenco di chiavi.

        $s3client = new Aws\S3\S3Client(['region' => 'us-west-2']);

        try {
            $objects = [];
            foreach ($contents['Contents'] as $content) {
                $objects[] = [
                    'Key' => $content['Key'],
                ];
            }
            $this->s3client->deleteObjects([
                'Bucket' => $this->bucketName,
                'Delete' => [
                    'Objects' => $objects,
                ],
            ]);
            $check = $this->s3client->listObjectsV2([
                'Bucket' => $this->bucketName,
            ]);
            if (count($check) <= 0) {
                throw new Exception("Bucket wasn't empty.");
            }
            echo "Deleted all objects and folders from $this->bucketName.\n";
        } catch (Exception $exception) {
            echo "Failed to delete $fileName from $this->bucketName with error: " . $exception->getMessage();
            exit("Please fix error with object deletion before continuing.");
        }

• Per i dettagli sull'API, consulta la DeleteObjectssezione AWS SDK for PHP API Reference.

PowerShell

Strumenti per PowerShell

Esempio 1: Questo comando rimuove l'oggetto "sample.txt" dal bucket «test-files». Viene richiesta una conferma prima dell'esecuzione del comando; per sopprimere il prompt, utilizzare l'opzione -Force.

Remove-S3Object -BucketName amzn-s3-demo-bucket -Key sample.txt

Esempio 2: questo comando rimuove la versione specificata dell'oggetto "sample.txt" dal bucket «test-files», presupponendo che il bucket sia stato configurato per abilitare le versioni degli oggetti.

Remove-S3Object -BucketName amzn-s3-demo-bucket -Key sample.txt -VersionId HLbxnx6V9omT6AQYVpks8mmFKQcejpqt

Esempio 3: Questo comando rimuove gli oggetti "sample1.txt «," sample2.txt "e" sample3.txt "dal bucket «test-files» come un'unica operazione batch. La risposta del servizio elencherà tutte le chiavi elaborate, indipendentemente dallo stato di successo o di errore dell'eliminazione. Per ottenere solo gli errori relativi alle chiavi che non hanno potuto essere elaborate dal servizio, aggiungi il ReportErrorsOnly parametro - (questo parametro può essere specificato anche con l'alias -Quiet).

Remove-S3Object -BucketName amzn-s3-demo-bucket -KeyCollection @( "sample1.txt", "sample2.txt", "sample3.txt" )

Esempio 4: Questo esempio utilizza un'espressione in linea con il KeyCollection parametro - per ottenere le chiavi degli oggetti da eliminare. Get-S3Objectrestituisce una raccolta di istanze Amazon.S3.Model.S3Object, ognuna delle quali ha un membro Key di tipo string che identifica l'oggetto.

Remove-S3Object -bucketname "amzn-s3-demo-bucket" -KeyCollection (Get-S3Object "test-files" -KeyPrefix "prefix/subprefix" | select -ExpandProperty Key)

Esempio 5: Questo esempio ottiene tutti gli oggetti che hanno un prefisso chiave «prefix/subprefix» nel bucket e li elimina. Si noti che gli oggetti in entrata vengono elaborati uno alla volta. Per raccolte di grandi dimensioni, è consigliabile passare la raccolta al parametro - InputObject (alias -S3ObjectCollection) del cmdlet per consentire l'eliminazione come batch con una singola chiamata al servizio.

Get-S3Object -BucketName "amzn-s3-demo-bucket" -KeyPrefix "prefix/subprefix" | Remove-S3Object -Force

Esempio 6: questo esempio reindirizza una raccolta di istanze Amazon.S3.Model.S3 ObjectVersion che rappresentano indicatori di eliminazione al cmdlet per l'eliminazione. Tieni presente che gli oggetti in entrata vengono elaborati uno alla volta. Per raccolte di grandi dimensioni, è consigliabile passare la raccolta al parametro - InputObject (alias -S3ObjectCollection) del cmdlet per consentire l'eliminazione come batch con una singola chiamata al servizio.

(Get-S3Version -BucketName "amzn-s3-demo-bucket").Versions | Where {$_.IsDeleteMarker -eq "True"} | Remove-S3Object -Force

Esempio 7: questo script mostra come eseguire un'eliminazione in batch di un set di oggetti (in questo caso eliminare i marker) creando una matrice di oggetti da utilizzare con il parametro -. KeyAndVersionCollection

$keyVersions = @()
$markers = (Get-S3Version -BucketName $BucketName).Versions | Where {$_.IsDeleteMarker -eq "True"}
foreach ($marker in $markers) { $keyVersions += @{ Key = $marker.Key; VersionId = $marker.VersionId } }
Remove-S3Object -BucketName $BucketName -KeyAndVersionCollection $keyVersions -Force

• Per i dettagli sull'API, vedere DeleteObjectsin AWS Strumenti per PowerShell Cmdlet Reference.

Python

SDK per Python (Boto3)

Nota

C'è altro su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

Elimina un set di oggetti utilizzando un elenco di chiavi oggetto.

class ObjectWrapper:
    """Encapsulates S3 object actions."""

    def __init__(self, s3_object):
        """
        :param s3_object: A Boto3 Object resource. This is a high-level resource in Boto3
                          that wraps object actions in a class-like structure.
        """
        self.object = s3_object
        self.key = self.object.key


    @staticmethod
    def delete_objects(bucket, object_keys):
        """
        Removes a list of objects from a bucket.
        This operation is done as a batch in a single request.

        :param bucket: The bucket that contains the objects. This is a Boto3 Bucket
                       resource.
        :param object_keys: The list of keys that identify the objects to remove.
        :return: The response that contains data about which objects were deleted
                 and any that could not be deleted.
        """
        try:
            response = bucket.delete_objects(
                Delete={"Objects": [{"Key": key} for key in object_keys]}
            )
            if "Deleted" in response:
                logger.info(
                    "Deleted objects '%s' from bucket '%s'.",
                    [del_obj["Key"] for del_obj in response["Deleted"]],
                    bucket.name,
                )
            if "Errors" in response:
                logger.warning(
                    "Could not delete objects '%s' from bucket '%s'.",
                    [
                        f"{del_obj['Key']}: {del_obj['Code']}"
                        for del_obj in response["Errors"]
                    ],
                    bucket.name,
                )
        except ClientError:
            logger.exception("Couldn't delete any objects from bucket %s.", bucket.name)
            raise
        else:
            return response

Elimina tutti gli oggetti in un bucket.

class ObjectWrapper:
    """Encapsulates S3 object actions."""

    def __init__(self, s3_object):
        """
        :param s3_object: A Boto3 Object resource. This is a high-level resource in Boto3
                          that wraps object actions in a class-like structure.
        """
        self.object = s3_object
        self.key = self.object.key


    @staticmethod
    def empty_bucket(bucket):
        """
        Remove all objects from a bucket.

        :param bucket: The bucket to empty. This is a Boto3 Bucket resource.
        """
        try:
            bucket.objects.delete()
            logger.info("Emptied bucket '%s'.", bucket.name)
        except ClientError:
            logger.exception("Couldn't empty bucket '%s'.", bucket.name)
            raise

Elimina in modo permanente un oggetto con versione eliminando tutte le relative versioni.

def permanently_delete_object(bucket, object_key):
    """
    Permanently deletes a versioned object by deleting all of its versions.

    Usage is shown in the usage_demo_single_object function at the end of this module.

    :param bucket: The bucket that contains the object.
    :param object_key: The object to delete.
    """
    try:
        bucket.object_versions.filter(Prefix=object_key).delete()
        logger.info("Permanently deleted all versions of object %s.", object_key)
    except ClientError:
        logger.exception("Couldn't delete all versions of %s.", object_key)
        raise

• Per i dettagli sull'API, consulta DeleteObjects AWSSDK for Python (Boto3) API Reference.

Ruby

SDK per Ruby

Nota

C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

  # Deletes the objects in an Amazon S3 bucket and deletes the bucket.
  #
  # @param bucket [Aws::S3::Bucket] The bucket to empty and delete.
  def delete_bucket(bucket)
    puts("\nDo you want to delete all of the objects as well as the bucket (y/n)? ")
    answer = gets.chomp.downcase
    if answer == 'y'
      bucket.objects.batch_delete!
      bucket.delete
      puts("Emptied and deleted bucket #{bucket.name}.\n")
    end
  rescue Aws::Errors::ServiceError => e
    puts("Couldn't empty and delete bucket #{bucket.name}.")
    puts("\t#{e.code}: #{e.message}")
    raise
  end

• Per i dettagli sull'API, consulta la DeleteObjectssezione AWS SDK for Ruby API Reference.

Rust

SDK per Rust

Nota

C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

/// Delete the objects in a bucket.
pub async fn delete_objects(
    client: &aws_sdk_s3::Client,
    bucket_name: &str,
    objects_to_delete: Vec<String>,
) -> Result<(), S3ExampleError> {
    // Push into a mut vector to use `?` early return errors while building object keys.
    let mut delete_object_ids: Vec<aws_sdk_s3::types::ObjectIdentifier> = vec![];
    for obj in objects_to_delete {
        let obj_id = aws_sdk_s3::types::ObjectIdentifier::builder()
            .key(obj)
            .build()
            .map_err(|err| {
                S3ExampleError::new(format!("Failed to build key for delete_object: {err:?}"))
            })?;
        delete_object_ids.push(obj_id);
    }

    client
        .delete_objects()
        .bucket(bucket_name)
        .delete(
            aws_sdk_s3::types::Delete::builder()
                .set_objects(Some(delete_object_ids))
                .build()
                .map_err(|err| {
                    S3ExampleError::new(format!("Failed to build delete_object input {err:?}"))
                })?,
        )
        .send()
        .await?;
    Ok(())
}

• Per i dettagli sulle API, consulta la DeleteObjectsguida di riferimento all'API AWS SDK for Rust.

Swift

SDK per Swift

Nota

C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

import AWSS3

    public func deleteObjects(bucket: String, keys: [String]) async throws {
        let input = DeleteObjectsInput(
            bucket: bucket,
            delete: S3ClientTypes.Delete(
                objects: keys.map { S3ClientTypes.ObjectIdentifier(key: $0) },
                quiet: true
            )
        )

        do {
            _ = try await client.deleteObjects(input: input)
        } catch {
            print("ERROR: deleteObjects:", dump(error))
            throw error
        }
    }

• Per i dettagli sull'API, consulta la DeleteObjectsguida di riferimento all'API AWS SDK for Swift.