Buckets are listed in alphabetical order in Object Storage Service (OSS). This topic describes how to list all buckets, buckets whose names contain a specified prefix, or a specified number of buckets that belong to the current Alibaba Cloud account.

List buckets that meet specific conditions

You can list buckets that meet specific conditions by specifying the prefix, marker, and max-keys parameters.

Parameter Description
prefix The prefix that must be contained in the names of returned buckets. If you do not specify this parameter, all buckets are returned.
marker The name of the bucket from which the list operation begins. All buckets whose names are alphabetically after the value of the marker parameter are returned. If you do not specify this parameter, all buckets are returned.
max-keys The maximum number of buckets that can be returned.

Valid values: 1 to 1000.

Default value: 100.

Limits

You cannot use acceleration endpoints to list buckets. Transfer acceleration is supported only for third-level domain names that contain a specific bucket name. The domain names are in the format of https://BucketName.oss-accelerate.aliyuncs.com. However, the domain names in requests that are used to list buckets do not contain bucket names, such as https://oss-cn-hangzhou.aliyuncs.com.

Use the OSS console

  1. Log on to the OSS console.
  2. In the left-side navigation pane, click Buckets.
    By default, all buckets that belong to the current Alibaba Cloud account are displayed on the Buckets page. If you want to query the number and attributes of the buckets, click the download icon in the upper-right corner.

Use ossbrowser

The operations that you can perform on buckets in ossbrowser are the same as the operations that you can perform on buckets in the OSS console. You can follow the on-screen instructions in ossbrowser to list buckets. For more information about how to use ossbrowser, see Use ossbrowser.

Use OSS SDKs

The following code provides examples on how to list buckets by using OSS SDKs for common programming languages. For more information about how to list buckets by using OSS SDKs for other programming languages, see Overview.

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.Bucket;

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";
        // The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
        String accessKeyId = "yourAccessKeyId";
        String accessKeySecret = "yourAccessKeySecret";

        // Create an OSSClient instance. 
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            // List the buckets that belong to the current Alibaba Cloud account in all regions. 
            List<Bucket> buckets = ossClient.listBuckets();
            for (Bucket bucket : buckets) {
                System.out.println(" - " + bucket.getName());
            }
        } 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();
            }
        }
    }
}
<?php
if (is_file(__DIR__ . '/../autoload.php')) {
    require_once __DIR__ . '/../autoload.php';
}
if (is_file(__DIR__ . '/../vendor/autoload.php')) {
    require_once __DIR__ . '/../vendor/autoload.php';
}

use OSS\OssClient;
use OSS\Core\OssException;

// The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
$accessKeyId = "yourAccessKeyId";
$accessKeySecret = "yourAccessKeySecret";
// In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. 
$endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
try{
    $ossClient = new OssClient($accessKeyId, $accessKeySecret, $endpoint);
    // List all buckets that belong to the current account. 
    $bucketListInfo = $ossClient->listBuckets();
} catch(OssException $e) {
    printf(__FUNCTION__ . ": FAILED\n");
    printf($e->getMessage() . "\n");
    return;
}
$bucketList = $bucketListInfo->getBucketList();
foreach($bucketList as $bucket) {
    print($bucket->getLocation() . "\t" . $bucket->getName() . "\t" . $bucket->getCreatedate() . "\n");
}        
const OSS = require('ali-oss');

const client = new OSS({
  // 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 oss-cn-hangzhou. 
  region: 'yourregion',
  // The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
  accessKeyId: 'yourAccessKeyId',
  accessKeySecret: 'yourAccessKeySecret'
});

async function listBuckets() {
  try {
    // List the buckets that belong to the current Alibaba Cloud account in all regions. 
    const result = await client.listBuckets();
    console.log(result);
  } catch (err) {
    console.log(err);
  }
}

listBuckets();
# -*- coding: utf-8 -*-
import oss2

# The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
auth = oss2.Auth('yourAccessKeyId', 'yourAccessKeySecret')
# 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. 
service = oss2.Service(auth, 'https://oss-cn-hangzhou.aliyuncs.com')

# List all buckets that belong to the current account. 
for b in oss2.BucketIterator(service):
    print(b.name)
using Aliyun.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 https://oss-cn-hangzhou.aliyuncs.com. 
var endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
// Security risks may arise if you use the AccessKey pair of an Alibaba Cloud account to access OSS because the account has permissions on all API operations. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
var accessKeyId = "yourAccessKeyId";
var accessKeySecret = "yourAccessKeySecret";

// Initialize an OSSClient instance. 
var client = new OssClient(endpoint, accessKeyId, accessKeySecret);

// List all buckets that belong to the current Alibaba Cloud account. 
public void ListBuckets()
{
    try
    {
        var buckets = client.ListBuckets();

        Console.WriteLine("List bucket succeeded");
        foreach (var bucket in buckets)
        {
            Console.WriteLine("Bucket name:{0}, Location:{1}, Owner:{2}", bucket.Name, bucket.Location, bucket.Owner);
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine("List bucket failed. {0}", ex.Message);
    }
}    
// Specify the address of the Security Token Service (STS) application server. Example: http://example.com. 
String stsServer = "http://example.com";
// We recommend that you use OSSAuthCredentialsProvider to ensure that the token is automatically updated when the token expires. 
OSSCredentialProvider credentialProvider = new OSSAuthCredentialsProvider(stsServer);
OSSClient ossClient = new OSSClient(getApplicationContext(), credentialProvider, null);

// List all buckets that belong to the current account. 
ListBucketsRequest request = new ListBucketsRequest();
ossClient.asyncListBuckets(request, new OSSCompletedCallback<ListBucketsRequest, ListBucketsResult>() {
    @Override
    public void onSuccess(ListBucketsRequest request, ListBucketsResult result) {
        List<OSSBucketSummary> buckets = result.getBuckets();
        for (int i = 0; i < buckets.size(); i++) {
            OSSLog.logDebug("name: " + buckets.get(i).name + " "
                    + "location: " + buckets.get(i).location);
        }
    }

    @Override
    public void onFailure(ListBucketsRequest request, ClientException clientException, ServiceException serviceException) {
        // Handle request exceptions. 
        if (clientException != null) {
            // Handle client-side exceptions such as network errors. 
            clientException.printStackTrace();
        }
        if (serviceException != null) {
            // Handle server-side exceptions. 
            Log.e("ErrorCode", serviceException.getErrorCode());
            Log.e("RequestId", serviceException.getRequestId());
            Log.e("HostId", serviceException.getHostId());
            Log.e("RawMessage", serviceException.getRawMessage());
        }
    }
});
package main

import (
    "fmt"
    "os"
    "github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
    // Create an OSSClient instance. 
    // 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. Specify your actual endpoint. 
    // The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
    client, err := oss.New("yourEndpoint", "yourAccessKeyId", "yourAccessKeySecret")
    if err != nil {
        fmt.Println("Error:", err)
        os.Exit(-1)
    }

    // List all buckets that belong to the current Alibaba Cloud account. 
    marker := ""
    for {
        lsRes, err := client.ListBuckets(oss.Marker(marker))
        if err != nil {
            fmt.Println("Error:", err)
            os.Exit(-1)
        }

        // By default, a maximum of 100 buckets are listed at a time.  
        for _, bucket := range lsRes.Buckets {
            fmt.Println("Bucket: ", bucket.Name)
        }

        if lsRes.IsTruncated {
            marker = lsRes.NextMarker
        } else {
            break
        }
    }
}            
OSSGetServiceRequest * getService = [OSSGetServiceRequest new];
// List all buckets that belong to the current account.     
OSSTask * getServiceTask = [client getService:getService];
[getServiceTask continueWithBlock:^id(OSSTask *task) {
    if (!task.error) {
        OSSGetServiceResult * result = task.result;
        NSLog(@"buckets: %@", result.buckets);
        NSLog(@"owner: %@, %@", result.ownerId, result.ownerDispName);
        [result.buckets enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
            NSDictionary * bucketInfo = obj;
            NSLog(@"BucketName: %@", [bucketInfo objectForKey:@"Name"]);
            NSLog(@"CreationDate: %@", [bucketInfo objectForKey:@"CreationDate"]);
            NSLog(@"Location: %@", [bucketInfo objectForKey:@"Location"]);
        }];
    } else {
        NSLog(@"get service failed, error: %@", task.error);
    }
    return nil;
}];
#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;

int main(void)
{
    /* Initialize the account information. */
    /* Security risks may arise if you use the AccessKey pair of an Alibaba Cloud account to access OSS because the account has permissions on all API operations. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. */
    std::string AccessKeyId = "yourAccessKeyId";
    std::string AccessKeySecret = "yourAccessKeySecret";
    /* Set yourEndpoint to 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. */
    std::string Endpoint = "yourEndpoint";

    /* Initialize resources such as network resources. */
    InitializeSdk();

    ClientConfiguration conf;
    OssClient client(Endpoint, AccessKeyId, AccessKeySecret, conf);

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

    if (outcome.isSuccess()) {
        /* Display the information about the listed 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;
        ShutdownSdk();
        return -1;
    }

    /* Release resources such as network resources. */
    ShutdownSdk();
    return 0;
}
#include "oss_api.h"
#include "aos_http_io.h"
/* 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. */
const char *endpoint = "yourEndpoint";
/* The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. */
const char *access_key_id = "yourAccessKeyId";
const char *access_key_secret = "yourAccessKeySecret";
void init_options(oss_request_options_t *options)
{
    options->config = oss_config_create(options->pool);
    /* Use a char* string to initialize the aos_string_t data type. */
    aos_str_set(&options->config->endpoint, endpoint);
    aos_str_set(&options->config->access_key_id, access_key_id);
    aos_str_set(&options->config->access_key_secret, access_key_secret);
    /* Specify whether to use CNAME to access OSS. A value of 0 indicates that CNAME is not used. */
    options->config->is_cname = 0;
    /* Configure network parameters such as the timeout period. */
    options->ctl = aos_http_controller_create(options->pool, 0);
}
int main(int argc, char *argv[])
{
    /* Call the aos_http_io_initialize method in main() to initialize global resources such as networks and memory. */
    if (aos_http_io_initialize(NULL, 0) != AOSE_OK) {
        exit(1);
    }
    /* Create a memory pool to manage memory. aos_pool_t is equivalent to apr_pool_t. The code used to create a memory pool is included in the APR library. */
    aos_pool_t *pool;
    /* Create a memory pool. The value of the second parameter is NULL. This value indicates that the pool does not inherit other memory pools. */
    aos_pool_create(&pool, NULL);
    /* Create and initialize options. This parameter includes global configuration information such as endpoint, access_key_id, access_key_secret, is_cname, and curl. */
    oss_request_options_t *oss_client_options;
    /* Allocate the memory resources in the memory pool to the options. */
    oss_client_options = oss_request_options_create(pool);
    /* Initialize oss_client_options. */
    init_options(oss_client_options);
    /* Initialize the parameters. */
    aos_table_t *resp_headers = NULL; 
    aos_status_t *resp_status = NULL; 
    oss_list_buckets_params_t *params = NULL;
    oss_list_bucket_content_t *content = NULL;
    int size = 0;
    params = oss_create_list_buckets_params(pool);
    /* List buckets. */
    resp_status = oss_list_bucket(oss_client_options, params, &resp_headers);
    if (aos_status_is_ok(resp_status)) {
        printf("list buckets succeeded\n");
    } else {
        printf("list buckets failed\n");
    }
    /* Display the listed buckets. */
    aos_list_for_each_entry(oss_list_bucket_content_t, content, &params->bucket_list, node) {
        printf("BucketName: %s\n", content->name.data);
        ++size;
    }
    /* Release the memory pool. This operation releases the memory resources allocated for the request. */
    aos_pool_destroy(pool);
    /* Release the allocated global resources. */
    aos_http_io_deinitialize();
    return 0;
}
require 'aliyun/oss'

client = Aliyun::OSS::Client.new(
  # In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. 
  endpoint: 'https://oss-cn-hangzhou.aliyuncs.com',
  # The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
  access_key_id: 'AccessKeyId', access_key_secret: 'AccessKeySecret')
# List all buckets that belong to the current Alibaba Cloud account in all regions. 
buckets = client.list_buckets
buckets.each { |b| puts b.name }

Use ossutil

For more information about how to list buckets by using ossutil, see List buckets.

Use the RESTful API

If your business requires a high level of customization, you can directly call RESTful APIs. To directly call an API, you must include the signature calculation in your code. For more information, see GetService (ListBuckets).