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Object Storage Service:List buckets

Last Updated:Sep 19, 2023

Object Storage Service (OSS) buckets are listed in alphabetical order. This topic describes how to list all buckets that belong to the current Alibaba Cloud account.

Usage notes

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

  • 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 list buckets, you must have the oss:ListBuckets permission. For more information, see Common examples of RAM policies.


The following code provides an example on how to list all buckets that belong to the current Alibaba Cloud account:

#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;

int main(void)
    /* Initialize information about the account that is used to access OSS. */
    /* 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 */
    std::string Endpoint = "yourEndpoint";

    /* Initialize resources, such as network resources. */

    ClientConfiguration conf;
    /* 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. */
    auto credentialsProvider = std::make_shared<EnvironmentVariableCredentialsProvider>();
    OssClient client(Endpoint, credentialsProvider, conf);

    /* List all buckets that belong to the current Alibaba Cloud account. */
    ListBucketsRequest request;
    auto outcome = client.ListBuckets(request);

    if (outcome.isSuccess()) {
        /* Display information about the buckets. */
        std::cout <<" success, and bucket count is" << outcome.result().Buckets().size() << std::endl;
        std::cout << "Bucket name is" << std::endl;
        for (auto result : outcome.result().Buckets())
            std::cout << result.Name() << std::endl;
    else {
        /* Handle exceptions. */
        std::cout << "ListBuckets fail" <<
        ",code:" << outcome.error().Code() <<
        ",message:" << outcome.error().Message() <<
        ",requestId:" << outcome.error().RequestId() << std::endl;
        return -1;

    /* Release resources, such as network resources. */
    return 0;


  • For the complete sample code that is used to list buckets, visit GitHub.

  • For the API operation that you can call to list buckets, see ListBuckets (GetService).