.NET AWS S3存储操作类
背景：我们是公司内部搭建的存储 并不是使用公网云，可供参考
1、Nuget包 AWSSDK.S3
2、创建一个单利模式 操作类
using Amazon.S3;
using Amazon.S3.Model;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace H3C.AtendanceService.Common
{
public class AWSS3Helper
{
private static AmazonS3Client _s3Client = null;
private static readonly object _locker = new object();
private static readonly string _accessKey = "s3的acesskey";
private static readonly string _secretKey = "s3的secretKey";
private static readonly string _s3url = "S3的host地址";//要带HTTP或者HTTPS
private static AWSS3Helper _instance = null;
private AWSS3Helper()
{
}
///
/// 初始化
///
///
/// 创建Bucket
///
/// bucketName
///
/// CreateBucketAsync(string bucketName, CancellationToken cancellationToken = default)
{
if (await CheckBucketExistAsync(bucketName, cancellationToken)) return true;
var buckectres = await _s3Client.PutBucketAsync(bucketName);
if (buckectres?.HttpStatusCode == System.Net.HttpStatusCode.OK) return true;
return false;
}
///
/// 创建Bucket
///
/// bucketName
///
///
/// 删除Bucket
///
/// bucketName
///
/// DeleteBucketAsync(string bucketName, CancellationToken cancellationToken = default)
{
if (!(await CheckBucketExistAsync(bucketName, cancellationToken))) return true;
var buckectres = await _s3Client.DeleteBucketAsync(bucketName, cancellationToken);
if (buckectres?.HttpStatusCode == System.Net.HttpStatusCode.OK) return true;
return false;
}
///
/// 删除Bucket
///
/// bucketName
///
///
/// 检测BucketName是否存在
///
/// bucketName
/// 线程取消
/// CheckBucketExistAsync(string bucketName, CancellationToken cancellationToken = default)
{
var response = await _s3Client?.ListBucketsAsync(cancellationToken);
if (response?.HttpStatusCode == System.Net.HttpStatusCode.OK && response?.Buckets?.Count > 0)
return response.Buckets.Any(x => x.BucketName == bucketName);
return false;
}
///
/// 检测BucketName是否存在
///
/// bucketName
///
/// 上传文件
///
/// 文件绝对路径
/// bucketname
/// 唯一键值:命名
/// 目录:目录名/目录名
/// 是否删除源文件
/// 线程取消
/// UploadFileAsync(string filepath, string bucketname, string filename, string dir = "", bool isDeletedSourceFile = false, CancellationToken cancellationToken = default)
{
string key = filename;
if (!string.IsNullOrEmpty(dir))
{
dir = dir.EndsWith("/") ? dir : dir + "/";
dir = dir.StartsWith("/") ? dir.Substring(1, dir.Length - 1) : dir;
key = dir + filename;
}
PutObjectRequest request = new PutObjectRequest
{
BucketName = bucketname,
Key = key,
FilePath = filepath,
CannedACL = S3CannedACL.PublicReadWrite //根据实际情况
};
PutObjectResponse response = await _s3Client.PutObjectAsync(request, cancellationToken);
if (response?.HttpStatusCode == System.Net.HttpStatusCode.OK)
{
if (isDeletedSourceFile) File.Delete(filepath);
return true;
}
return false;
}
///
/// 上传文件
///
/// 文件绝对路径
/// bucketname
/// 唯一键值:命名
/// 目录:目录名/目录名
/// 是否删除源文件
///
/// 上传文件,返回URL
///
/// 文件绝对路径
/// bucketname
/// 失效时间
/// 唯一键值:命名
/// 目录:目录名/目录名
/// 是否删除源文件
/// 线程取消
/// URL
public async Task UploadFileReturnUrlAsync(string filepath, string bucketname, DateTime expiretime, string filename, string dir = "", bool isDeletedSourceFile = false, CancellationToken cancellationToken = default)
{
try
{
string key = filename;
if (!string.IsNullOrEmpty(dir))
{
dir = dir.EndsWith("/") ? dir : dir + "/";
dir = dir.StartsWith("/") ? dir.Substring(1, dir.Length - 1) : dir;
key = dir + filename;
}
PutObjectRequest request = new PutObjectRequest
{
BucketName = bucketname,
Key = key,
FilePath = filepath,
CannedACL = S3CannedACL.PublicReadWrite//根据实际情况
};
PutObjectResponse response = await _s3Client.PutObjectAsync(request, cancellationToken);
if (response?.HttpStatusCode == System.Net.HttpStatusCode.OK)
{
//return GetFileUrl(bucketname, key, expiretime);
var url = await GetFileUrlAsync(bucketname, key, expiretime);
if (!string.IsNullOrEmpty(url) && isDeletedSourceFile)
{
File.Delete(filepath);
return url;
}
}
return "";
}
catch (Exception ex)
{
throw;
}
}
///
/// 上传文件,返回URL
///
/// 文件绝对路径
/// bucketname
/// 失效时间
/// 唯一键值:命名
/// 目录:目录名/目录名
/// 是否删除源文件
/// 线程取消
/// URL
public string UploadFileReturnUrl(string filepath, string bucketname, DateTime expiretime, string filename, string dir = "", bool isDeletedSourceFile = false)
{
string key = filename;
if (!string.IsNullOrEmpty(dir))
{
dir = dir.EndsWith("/") ? dir : dir + "/";
dir = dir.StartsWith("/") ? dir.Substring(1, dir.Length - 1) : dir;
key = dir + filename;
}
PutObjectRequest request = new PutObjectRequest
{
BucketName = bucketname,
Key = key,
FilePath = filepath,
CannedACL = S3CannedACL.PublicReadWrite//根据实际情况
};
PutObjectResponse response = _s3Client.PutObject(request);
if (response?.HttpStatusCode == System.Net.HttpStatusCode.OK)
{
//return GetFileUrl(bucketname, key, expiretime);
var url = GetFileUrl(bucketname, key, expiretime);
if (!string.IsNullOrEmpty(url) && isDeletedSourceFile)
{
File.Delete(filepath);
return url;
}
}
return "";
}
///
/// 根据key获取URL
///
/// bucketname
/// 唯一键值
/// 失效时间
/// GetFileUrlAsync(string bucketname, string key, DateTime expiretime)
{
GetPreSignedUrlRequest urlRequest = new GetPreSignedUrlRequest
{
BucketName = bucketname,
Key = key,
Protocol = Protocol.HTTP,
Expires = expiretime
};
return await Task.Run(() => { return _s3Client.GetPreSignedURL(urlRequest); });
}
///
/// 根据key获取URL
///
/// bucketname
/// 唯一键值
/// 失效时间
///
/// 删除文件
///
/// bucketname
/// 唯一键值
///
/// DeleteFileAsync(string bucketname, string key, CancellationToken cancellationToken = default)
{
DeleteObjectRequest delete = new DeleteObjectRequest
{
BucketName = bucketname,
Key = key
};
var deleteObjectResponse = await _s3Client.DeleteObjectAsync(delete, cancellationToken);
if (deleteObjectResponse?.HttpStatusCode == System.Net.HttpStatusCode.OK) return true;
return false;
}
///
/// 删除文件
///
/// bucketname
/// 唯一键值
///
/// 3、使用
//创建bucket
await AWSS3Helper.GetInStance().CreateBucketAsync("TestBucket");
//
await AWSS3Helper.GetInStance().UploadFileReturnUrlAsync("", buckname, DateTime.Now.AddYears(20), filename, "Dir/", true);