Updated on 2026-02-27 GMT+08:00

List Objects in a Bucket

Function

This API is used to list objects in a bucket.

Calling Method

For details, see Calling APIs.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

  • If you are using role/policy-based authorization, see Permissions Policies and Supported Actions for details on the required permissions.
  • If you are using identity policy-based authorization, the following identity policy-based permissions are required.

    Action

    Access Level

    Resource Type (*: required)

    Condition Key

    Alias

    Dependencies

    oms::listObjects

    List

    -

    -

    -

    -

URI

POST /v2/{project_id}/objectstorage/buckets/objects

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

The project ID.

Minimum: 1

Maximum: 1024

Request Parameters

Table 2 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

The token used for IAM authentication. Ensure that the project ID in the token matches the project ID in the request URI.

Minimum: 1

Maximum: 16384

Table 3 Request body parameters

Parameter

Mandatory

Type

Description

cloud_type

Yes

String

The cloud service provider.

AWS: Amazon Web Services

Aliyun: Alibaba Cloud

Qiniu: Qiniu Cloud

QingCloud

Tencent: Tencent Cloud

Baidu: Baidu Cloud

KingsoftCloud

Azure: Microsoft Azure

UCloud

HuaweiCloud: Huawei Cloud

Google: Google Cloud

URLSource: URL data sources

HEC

Minimum: 0

Maximum: 100

file_path

Yes

String

The path of object files to be queried in the destination bucket, which must end with a slash (/).

Minimum: 0

Maximum: 1023

ak

No

String

The AK for accessing the source bucket. Enter a maximum of 100 characters.

Minimum: 0

Maximum: 100

sk

No

String

The SK for accessing the source bucket. Enter a maximum of 100 characters.

Minimum: 0

Maximum: 100

connection_string

No

String

The connection string, which is used for Microsoft Azure Blob authentication.

Minimum: 0

Maximum: 2048

json_auth_file

No

String

The file used for Google Cloud Storage authentication.

Minimum: 0

Maximum: 65535

data_center

Yes

String

The data center region.

Minimum: 0

Maximum: 100

page_size

Yes

Integer

The page size.

Minimum: 0

Maximum: 100

behind_filename

Yes

String

The name of the last object on the current page (offset).

Minimum: 0

Maximum: 1024

app_id

No

String

Tencent Cloud app ID. This parameter is mandatory when cloud_type is Tencent. You can obtain the value from the account information page on the Tencent Cloud console.

Minimum: 0

Maximum: 255

bucket_name

Yes

String

The bucket name.

Minimum: 0

Maximum: 100

Response Parameters

Status code: 200

Table 4 Response body parameters

Parameter

Type

Description

next_page

Boolean

Whether the next page exists.

next_marker

String

The marker required for querying the next page (object name at the end of the current page, offset)

Minimum: 0

Maximum: 1024

records

Array of ShowBucketRecord objects

Record returned for querying bucket information.

Array Length: 0 - 100

Table 5 ShowBucketRecord

Parameter

Type

Description

name

String

Object name.

Minimum: 0

Maximum: 1024

size

String

The object size. If the object does not have the size attribute, -- is returned.

Minimum: 0

Maximum: 100

Status code: 400

Table 6 Response body parameters

Parameter

Type

Description

error_msg

String

Error message.

error_code

String

Error code.

Example Requests

This example lists objects in a specified bucket and returns the object information on multiple pages.

POST https://{endpoint}/v2/{project_id}/objectstorage/buckets/objects

{
  "page_size" : 100,
  "behind_filename" : "",
  "file_path" : "A/",
  "cloud_type" : "HuaweiCloud",
  "bucket_name" : "xxx",
  "ak" : "xxxxxak",
  "sk" : "xxxxxsk",
  "data_center" : "cn-north-x"
}

Example Responses

Status code: 200

The response body for querying bucket information.

{
  "next_page" : false,
  "next_marker" : null,
  "records" : [ {
    "name" : "xxxx",
    "size" : "--"
  }, {
    "name" : "xxxx",
    "size" : "73.59 MB"
  } ]
}

SDK Sample Code

The SDK sample code is as follows.

This example lists objects in a specified bucket and returns the object information on multiple pages.

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package com.huaweicloud.sdk.test;

import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.exception.ServiceResponseException;
import com.huaweicloud.sdk.oms.v2.region.OmsRegion;
import com.huaweicloud.sdk.oms.v2.*;
import com.huaweicloud.sdk.oms.v2.model.*;


public class ShowBucketObjectsSolution {

    public static void main(String[] args) {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        String ak = System.getenv("CLOUD_SDK_AK");
        String sk = System.getenv("CLOUD_SDK_SK");
        String projectId = "{project_id}";

        ICredential auth = new BasicCredentials()
                .withProjectId(projectId)
                .withAk(ak)
                .withSk(sk);

        OmsClient client = OmsClient.newBuilder()
                .withCredential(auth)
                .withRegion(OmsRegion.valueOf("<YOUR REGION>"))
                .build();
        ShowBucketObjectsRequest request = new ShowBucketObjectsRequest();
        ShowBucketReq body = new ShowBucketReq();
        body.withBucketName("xxx");
        body.withBehindFilename("");
        body.withPageSize(100);
        body.withDataCenter("cn-north-x");
        body.withSk("xxxxxsk");
        body.withAk("xxxxxak");
        body.withFilePath("A/");
        body.withCloudType("HuaweiCloud");
        request.withBody(body);
        try {
            ShowBucketObjectsResponse response = client.showBucketObjects(request);
            System.out.println(response.toString());
        } catch (ConnectionException e) {
            e.printStackTrace();
        } catch (RequestTimeoutException e) {
            e.printStackTrace();
        } catch (ServiceResponseException e) {
            e.printStackTrace();
            System.out.println(e.getHttpStatusCode());
            System.out.println(e.getRequestId());
            System.out.println(e.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}

This example lists objects in a specified bucket and returns the object information on multiple pages.

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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkoms.v2.region.oms_region import OmsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkoms.v2 import *

if __name__ == "__main__":
    # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak = os.environ["CLOUD_SDK_AK"]
    sk = os.environ["CLOUD_SDK_SK"]
    projectId = "{project_id}"

    credentials = BasicCredentials(ak, sk, projectId)

    client = OmsClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(OmsRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ShowBucketObjectsRequest()
        request.body = ShowBucketReq(
            bucket_name="xxx",
            behind_filename="",
            page_size=100,
            data_center="cn-north-x",
            sk="xxxxxsk",
            ak="xxxxxak",
            file_path="A/",
            cloud_type="HuaweiCloud"
        )
        response = client.show_bucket_objects(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

This example lists objects in a specified bucket and returns the object information on multiple pages.

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package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    oms "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/oms/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/oms/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/oms/v2/region"
)

func main() {
    // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak := os.Getenv("CLOUD_SDK_AK")
    sk := os.Getenv("CLOUD_SDK_SK")
    projectId := "{project_id}"

    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        Build()

    client := oms.NewOmsClient(
        oms.OmsClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.ShowBucketObjectsRequest{}
	skShowBucketReq:= "xxxxxsk"
	akShowBucketReq:= "xxxxxak"
	request.Body = &model.ShowBucketReq{
		BucketName: "xxx",
		BehindFilename: "",
		PageSize: int32(100),
		DataCenter: "cn-north-x",
		Sk: &skShowBucketReq,
		Ak: &akShowBucketReq,
		FilePath: "A/",
		CloudType: "HuaweiCloud",
	}
	response, err := client.ShowBucketObjects(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

For SDK sample code of more programming languages, see the Sample Code tab in API Explorer. SDK sample code can be automatically generated.

Status Codes

Status Code

Description

200

The response body for querying bucket information.

400

Standard error response.

Error Codes

See Error Codes.