Object Storage Service:Create a bucket

Usage notes

• In this topic, the public endpoint of the China (Hangzhou) region is used. If you want to access OSS from other Alibaba Cloud services in the same region as OSS, use an internal endpoint. For more information about OSS regions and endpoints, see Regions, endpoints and open ports.

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

• In this topic, an OSSClient instance is created by using an OSS endpoint. If you want to create an OSSClient instance by using custom domain names or Security Token Service (STS), see Create an OSSClient instance.

• To create a bucket, you must have the oss:PutBucket permission. For more information, see Attach a custom policy to a RAM user.

Sample code

The following code provides an example on how to create a bucket named examplebucket:

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        // Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. 
        String endpoint = "yourEndpoint";
        // 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. 
        String bucketName = "examplebucket";
        // Specify the ID of the resource group. If you do not specify a resource group ID, the bucket belongs to the default resource group. 
        //String rsId = "rg-aek27tc****";
        // 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. 
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            // Create a bucket and enable the hierarchical namespace feature for the bucket. 
            CreateBucketRequest createBucketRequest = new CreateBucketRequest(bucketName).withHnsStatus(HnsStatus.Enabled);
            // The following code provides an example on how to specify the storage class, access control list (ACL), and redundancy type when you create the bucket. 
            // In this example, the storage class of the bucket is Standard. 
            createBucketRequest.setStorageClass(StorageClass.Standard);
            // The default redundancy type of the bucket is DataRedundancyType.LRS. 
            createBucketRequest.setDataRedundancyType(DataRedundancyType.LRS);
            // Set the ACL of the bucket to public-read. The default ACL is private. 
            createBucketRequest.setCannedACL(CannedAccessControlList.PublicRead);
            // When you create a bucket in a region that supports resource groups, you can configure a resource group for the bucket. 
            //createBucketRequest.setResourceGroupId(rsId);

            ossClient.createBucket(createBucketRequest);

            // Create a bucket. 
            ossClient.createBucket(createBucketRequest);
        } 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 the complete sample code that is used to create a bucket, visit GitHub.

• For more information about the API operation that you can call to create a bucket, see PutBucket.