如何使用.net sdk下载s3存储桶中存在的整个文件夹。尝试以下代码,它会抛出无效密钥。我需要下载存储桶中存在的嵌套pesudo文件夹中存在的所有文件,并删除文件下载限制为1000默认。
public static void DownloadFile()
{
var client = new AmazonS3Client(keyId, keySecret, bucketRegion);
ListObjectsV2Request request = new ListObjectsV2Request
{
BucketName = bucketName + "/private/TargetFolder",
MaxKeys = 1000
};
try
{
ListObjectsV2Response bucketResponse = client.ListObjectsV2(request);
foreach (S3Object o in bucketResponse.S3Objects)
{
var getRequest = new GetObjectRequest
{
BucketName = bucketResponse.Name + "/private/TargetFolder",
Key = bucketResponse.Name +"/private/TargetFolder/"+ o.Key
};
var response = client.GetObject(getRequest);
response.WriteResponseStreamToFile(downloadLocation + "\\" + o.Key);
var responseCode = response.HttpStatusCode;
if (response.HttpStatusCode == System.Net.HttpStatusCode.OK)
{
Console.WriteLine($"Success downloaded : {o.Key}");
}
else if (response.HttpStatusCode == System.Net.HttpStatusCode.RequestTimeout)
{
Console.WriteLine("Request Timeout error.");
}
else if (response.HttpStatusCode == System.Net.HttpStatusCode.ServiceUnavailable)
{
Console.WriteLine("Service Unavailable.");
}
else if (response.HttpStatusCode == System.Net.HttpStatusCode.InternalServerError)
{
Console.WriteLine("Internal Server error.");
}
else
{
Console.WriteLine("Please check the provided AWS Credentials.");
}
}
}
catch (AmazonS3Exception amazonS3Exception)
{
if (amazonS3Exception.ErrorCode != null &&
(amazonS3Exception.ErrorCode.Equals("InvalidAccessKeyId") || amazonS3Exception.ErrorCode.Equals("InvalidSecurity")))
{
Console.WriteLine("Please check the provided AWS Credentials.");
}
else
{
Console.WriteLine(amazonS3Exception.Message);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
Console.ReadLine();
}
谢谢!
答案 0 :(得分:2)
尝试一下,它对我有用
public static void DownloadFile()
{
System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12;
ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | SecurityProtocolType.Tls | SecurityProtocolType.Tls;
var client = new AmazonS3Client(keyId, keySecret, bucketRegion);
ListObjectsRequest request = new ListObjectsRequest();
request.BucketName = "BUCKET_NAME";
request.Prefix = "/private/TargetFolder";
request.Delimiter = "/";
request.MaxKeys = 1000;
ListObjectsResponse response = client.ListObjects(request);
var x = response.S3Objects;
foreach (var objt in x)
{
GetObjectRequest request1 = new GetObjectRequest();
request1.BucketName = "BUCKET_NAME";
request1.Key = objt.Key;
GetObjectResponse Response = client.GetObject(request1);
using (Stream responseStream = Response.ResponseStream)
{
Response.WriteResponseStreamToFile(downloadLocation + "\\" + o.Key);
}
}
}
答案 1 :(得分:0)
如果您在 S3Objects.Count 中总是得到0,请尝试不使用 Delimiter 属性:
public async Task DownloadDirectoryAsync()
{
var bucketRegion = RegionEndpoint.USEast2;
var credentials = new BasicAWSCredentials(accessKey, secretKey);
var client = new AmazonS3Client(credentials, bucketRegion);
var bucketName = "bucketName";
var request = new ListObjectsV2Request
{
BucketName = bucketName,
Prefix = "directorey/",
MaxKeys = 1000
};
var response = await client.ListObjectsV2Async(request);
var utility = new TransferUtility(s3Client);
var downloadPath = "c:\\your_folder";
foreach (var obj in response.S3Objects)
{
utility.Download($"{downloadPath}\\{obj.Key}", bucketName, obj.Key);
}
}
当然,您需要 s3:ListBucket 权限