Deleting Objects

If you have any questions during development, post them on the Issues page of GitHub. For details about parameters and usage of each API, see the .

Exercise caution when performing this operation. If the versioning function is disabled for the bucket where the object is located, the object cannot be restored after being deleted.

Deleting a Single Object

You can call ObsClient.deleteObject to delete a single object. Sample code is as follows:

// Hard-coded or plaintext AK/SK are risky. For security purposes, encrypt your AK/SK and store them in the configuration file or environment variables. In this example, the AK/SK are stored in environment variables for identity authentication. Before running this example, configure environment variables ACCESS_KEY_ID and SECRET_ACCESS_KEY_ID.
// Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/eu/usermanual-ca/ca_01_0003.html.
String ak = System.getenv("ACCESS_KEY_ID");
String sk = System.getenv("SECRET_ACCESS_KEY_ID");
String endPoint = "https://your-endpoint";
// Create an instance of ObsClient.
ObsClient obsClient = new ObsClient(ak, sk, endPoint);
obsClient.deleteObject("bucketname", "objectname");

Deleting Objects in a Batch

You can call ObsClient.deleteObjects to delete objects in a batch.

A maximum of 1000 objects can be deleted each time. Two response modes are supported: verbose (detailed) and quiet (brief).

In verbose mode (default mode), the returned response includes the deletion result of each requested object.
In quiet mode, the returned response includes only results of objects failed to be deleted.

Sample code:

// Hard-coded or plaintext AK/SK are risky. For security purposes, encrypt your AK/SK and store them in the configuration file or environment variables. In this example, the AK/SK are stored in environment variables for identity authentication. Before running this example, configure environment variables ACCESS_KEY_ID and SECRET_ACCESS_KEY_ID.
// Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/eu/usermanual-ca/ca_01_0003.html.
String ak = System.getenv("ACCESS_KEY_ID");
String sk = System.getenv("SECRET_ACCESS_KEY_ID");
String endPoint = "https://your-endpoint";
ObsClient obsClient = new ObsClient(ak, sk, endPoint);

ListVersionsRequest request = new ListVersionsRequest("bucketname");
// Delete 100 objects at a time.
request.setMaxKeys(100);
ListVersionsResult result;
do {  
       result = obsClient.listVersions(request);
       
       DeleteObjectsRequest deleteRequest = new DeleteObjectsRequest("bucketname");
       
       for(VersionOrDeleteMarker v  : result.getVersions()) {
              deleteRequest.addKeyAndVersion(v.getKey(), v.getVersionId());
       }
       
       DeleteObjectsResult deleteResult = obsClient.deleteObjects(deleteRequest);
       // Obtain the successfully deleted objects.
       Log.i("DeletesObjects",deleteResult.getDeletedObjectResults());
       // Obtain the list of objects failed to be deleted.
       Log.i("DeletesObjects", deleteResult.getErrorResults());
       
       request.setKeyMarker(deleteResult.getNextKeyMarker());
       request.setVersionIdMarker(deleteResult.getNextVersionIdMarker());
}while(result.isTruncated());