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    Object Storage Service:Delete objects (OSS SDK for Java 1.0)

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    Object Storage Service:Delete objects (OSS SDK for Java 1.0)

    Last Updated:Jun 02, 2026

    Delete a single object, multiple objects, or objects with a specified name prefix from a versioning-enabled bucket.

    Usage notes

    • In this topic, the public endpoint of the China (Hangzhou) region is used. To access OSS from other Alibaba Cloud services in the same region, use an internal endpoint. For details about supported regions and endpoints, see Regions and Endpoints.

    • In this topic, access credentials are obtained from environment variables. For more information, see Configure access credentials.

    • This topic demonstrates creating an OSSClient instance with an OSS endpoint. For alternative configurations, such as using a custom domain or authenticating with credentials from Security Token Service (STS), see Client configuration.

    • To delete an object, you must have the oss:DeleteObject permission. For more information, see Grant a custom policy.

    Delete behavior in versioned buckets

    When you delete an object from a versioned bucket, you must decide whether to specify a version ID.

    • Delete an object without specifying a version ID (temporary deletion)

      If you do not specify a version ID, OSS does not delete the current version. Instead, it adds a delete marker as the latest version. Subsequent GetObject requests return 404 Not Found with header:x-oss-delete-marker = true and x-oss-version-id of the delete marker in the response.

      When x-oss-delete-marker is true, x-oss-version-id returns the version ID of the delete marker.

    • Delete an object by specifying a version ID (permanent deletion)

      If you specify a version ID, OSS permanently deletes that version using the versionId parameter in params. To delete the version with a null ID, set params['versionId'] = "null" in params. OSS treats the string "null" as the target version ID.

    Delete an object

    Permanently or temporarily delete an object from a versioned bucket.

    • Permanently delete an object from a versioning-enabled bucket

      Permanently delete an object by specifying its version ID:

      import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;

public class Demo {
    public static void main(String[] args) throws Exception {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the full path of the object. Do not include the bucket name in the full path. 
        String objectName = "exampledir/object";
        String versionId  = "CAEQMxiBgICAof2D0BYiIDJhMGE3N2M1YTI1NDQzOGY5NTkyNTI3MGYyMzJm****";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        // Call the shutdown method to release resources when the OSSClient is no longer in use.
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            // Delete the specified version of the object. 
            ossClient.deleteVersion(bucketName, objectName , versionId);
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

    • Temporarily delete an object from a versioning-enabled bucket

      Temporarily delete an object without specifying a version ID: 

      import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;

public class Demo {
    public static void main(String[] args) throws Exception {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the full path of the object. Do not include the bucket name in the full path. 
        String objectName = "exampledir/object";
        // Specify the endpoint of the region in which the bucket is located. For example, if your bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        // Call the shutdown method to release resources when the OSSClient is no longer in use.
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();
        
        try {
            // Temporarily delete the object. A delete marker is added to the object. 
            ossClient.deleteObject(bucketName, objectName);
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

    Delete multiple objects

    Permanently or temporarily delete multiple objects from a versioned bucket.

    • Permanently delete multiple objects from a versioning-enabled bucket

      Permanently delete multiple objects or delete markers by specifying their version IDs: 

      import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.DeleteVersionsRequest;
import com.aliyun.oss.model.DeleteVersionsResult;
import java.net.URLDecoder;
import java.util.ArrayList;
import java.util.List;

public class Demo {
    public static void main(String[] args) throws Exception {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the full paths of the objects. Do not include the bucket name in the full paths. 
        String objectName = "exampledir/object";
        String object2Name = "exampledir/object2";
        String yourObjectNameVersionId  = "CAEQMxiBgICAof2D0BYiIDJhMGE3N2M1YTI1NDQzOGY5NTkyNTI3MGYyMzJm****";
        String yourObject2DelMarkerNameVersionId  = "MGE3N2M1YgICAof2D0BYiID3N2M1YTITI1NDQzOGY5NTN2M1YTI1NDQz****";
        
        // Specify the region of the bucket. For example, if your bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";
        
        // Create an OSSClient instance.
        // Call the shutdown method to release resources when the OSSClient is no longer in use. 
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            // Delete the objects or delete markers that have specified version IDs. 
            List<DeleteVersionsRequest.KeyVersion> keyVersionsList = new ArrayList<DeleteVersionsRequest.KeyVersion>();
            keyVersionsList.add(new DeleteVersionsRequest.KeyVersion(objectName,yourObjectNameVersionId));
            keyVersionsList.add(new DeleteVersionsRequest.KeyVersion(object2Name,yourObject2DelMarkerNameVersionId));
            DeleteVersionsRequest delVersionsRequest = new DeleteVersionsRequest(bucketName);
            delVersionsRequest.setKeys(keyVersionsList);
            // Initiate a deleteVersions request. 
            DeleteVersionsResult delVersionsResult = ossClient.deleteVersions(delVersionsRequest);

            // View the deletion result. 
            for (DeleteVersionsResult.DeletedVersion delVer : delVersionsResult.getDeletedVersions()) {
                String keyName = URLDecoder.decode(delVer.getKey(), "UTF-8");
                String keyVersionId = delVer.getVersionId();
                String keyDelMarkerId = delVer.getDeleteMarkerVersionId();
                System.out.println("delete key: " + keyName);
                System.out.println("delete key versionId: " + keyVersionId);
                if(keyDelMarkerId != null && keyDelMarkerId.length() != 0){
                    System.out.println("delete key del_marker versionId: " + keyDelMarkerId);
                }
            }
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

    • Temporarily delete multiple objects from a versioning-enabled bucket

      Temporarily delete multiple objects without specifying version IDs:

      import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.DeleteObjectsRequest;
import com.aliyun.oss.model.DeleteObjectsResult;
import java.net.URLDecoder;
import java.util.ArrayList;
import java.util.List;

public class Demo {
    public static void main(String[] args) throws Exception {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the full paths of the objects. Do not include the bucket name in the full paths. 
        String objectName = "exampledir/object";
        String object2Name = "exampledir/object2";

        // Specify the region of the bucket. For example, if your bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        // Call the shutdown method to release resources when the OSSClient is no longer in use.
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            // Delete multiple objects at a time. 
            List<String> KeysList = new ArrayList<String>();
            KeysList.add(objectName);
            KeysList.add(object2Name);
            DeleteObjectsRequest request = new DeleteObjectsRequest(bucketName);
            request.setKeys(KeysList);
            // Initiate a deleteObjects request. 
            DeleteObjectsResult delObjResult = ossClient.deleteObjects(request);

            // View the deletion result. 
            for (String o : delObjResult.getDeletedObjects()) {
                String keyName = URLDecoder.decode(o, "UTF-8");
                System.out.println("delete key name: " + keyName);
            }
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

    Delete objects by prefix

    Delete all versions of objects with a specified name prefix:

    import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.*;
import java.util.ArrayList;
import java.util.List;

public class Demo {
    public static void main(String[] args) throws Exception {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the prefix. 
        String prefix = "yourkeyPrefix";
        
        // Specify the region of the bucket. For example, if your bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";
        
        // Create an OSSClient instance. 
        // Call the shutdown method to release resources when the OSSClient is no longer in use.
         ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            // List the versions of all objects whose names contain the specified prefix and delete the versions. 
            String nextKeyMarker = null;
            String nextVersionMarker = null;
            VersionListing versionListing = null;
            do {
                ListVersionsRequest listVersionsRequest = new ListVersionsRequest()
                        .withBucketName(bucketName)
                        .withKeyMarker(nextKeyMarker)
                        .withVersionIdMarker(nextVersionMarker)
                        .withPrefix(prefix);

                versionListing = ossClient.listVersions(listVersionsRequest);
                if (versionListing.getVersionSummaries().size() > 0) {
                    List<DeleteVersionsRequest.KeyVersion> keyVersionsList = new ArrayList<DeleteVersionsRequest.KeyVersion>();
                    for (OSSVersionSummary ossVersion : versionListing.getVersionSummaries()) {
                        System.out.println("key name: " + ossVersion.getKey());
                        System.out.println("versionid: " + ossVersion.getVersionId());
                        System.out.println("Is delete marker: " + ossVersion.isDeleteMarker());
                        keyVersionsList.add(new DeleteVersionsRequest.KeyVersion(ossVersion.getKey(), ossVersion.getVersionId()));
                    }
                    DeleteVersionsRequest delVersionsRequest = new DeleteVersionsRequest(bucketName).withKeys(keyVersionsList);
                    ossClient.deleteVersions(delVersionsRequest);
                }

                nextKeyMarker = versionListing.getNextKeyMarker();
                nextVersionMarker = versionListing.getNextVersionIdMarker();
            } while (versionListing.isTruncated());
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

    References

    • For more information about the API operation that you can call to delete an object, see DeleteObject.

    • For more information about the API operation that you can call to delete multiple objects, see DeleteMultipleObjects.