s3_demo/S3Demo/Model/BucketModel.cs

// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX - License - Identifier: Apache - 2.0

using Amazon;
using Amazon.Runtime;
using Amazon.S3;
using Amazon.S3.Model;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;

namespace S3Demo.Model
{
    // This example uses the AWS SDK for .NET to check isExist the Amazon Simple Storage
    // Service (Amazon S3) buckets belonging to the default account. This code
    // was written using AWS SDK for .NET v3.5 and .NET Core 5.0.
    class BucketModel
    {
        private static IAmazonS3 _s3Client;

        /// <summary>
        /// 判断存储桶是否存在
        /// </summary>
        /// <param name="bucketName"></param>
        /// <param name="credentials"></param>
        /// <param name="conf"></param>
        /// <returns></returns>
        public static async Task<bool> isExistBucket(string bucketName, BasicAWSCredentials credentials, AmazonS3Config conf)
        {
            bool flag = false;
            _s3Client = new AmazonS3Client(credentials, conf);
            var response = await _s3Client.ListBucketsAsync();
            List<S3Bucket> bucketList = response.Buckets;
            bucketList.ForEach(b => Console.WriteLine($"Bucket name: {b.BucketName}, created on: {b.CreationDate}"));
            foreach (var item in bucketList)
            {
                if (item.BucketName == bucketName)
                {
                    flag = true;
                }
            }
            return flag;
        }

    }
}