如何使用c#将文件上传到亚马逊S3超级简单

Question

我厌倦了所有这些"上传到S3"的例子和教程不起作用,有人可以给我一个简单的例子并且非常容易吗？

Answer 1

以下是您必须遵循的说明才能获得完整的演示程序...

1 - 下载并安装适用于.NET的Amazon Web服务SDK,您可以在(http://aws.amazon.com/sdk-for-net/)中找到它.因为我有visual studio 2010我选择安装3.5 .NET SDK.

2-开放视觉工作室并制作一个新项目,我有visual studio 2010,我正在使用一个控制台应用程序项目.

3-添加对AWSSDK.dll的引用,它与上面提到的Amazon Web服务SDK一起安装,在我的系统中,dll位于"C:\ Program Files(x86)\ AWS SDK for .NET\bin\Net35\AWSSDK" .DLL".

4-制作一个新的类文件,在这里称它为"AmazonUploader"类的完整代码:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Amazon;
using Amazon.S3;
using Amazon.S3.Transfer;

namespace UploadToS3Demo
{
    public class AmazonUploader
    {
        public bool sendMyFileToS3(string localFilePath, string bucketName, string subDirectoryInBucket, string fileNameInS3)
        {
        // input explained :
        // localFilePath = the full local file path e.g. "c:\mydir\mysubdir\myfilename.zip"
        // bucketName : the name of the bucket in S3 ,the bucket should be alreadt created
        // subDirectoryInBucket : if this string is not empty the file will be uploaded to
            // a subdirectory with this name
        // fileNameInS3 = the file name in the S3

        // create an instance of IAmazonS3 class ,in my case i choose RegionEndpoint.EUWest1
        // you can change that to APNortheast1 , APSoutheast1 , APSoutheast2 , CNNorth1
        // SAEast1 , USEast1 , USGovCloudWest1 , USWest1 , USWest2 . this choice will not
        // store your file in a different cloud storage but (i think) it differ in performance
        // depending on your location
        IAmazonS3 client = Amazon.AWSClientFactory.CreateAmazonS3Client(RegionEndpoint.EUWest1);

        // create a TransferUtility instance passing it the IAmazonS3 created in the first step
        TransferUtility utility = new TransferUtility(client);
        // making a TransferUtilityUploadRequest instance
        TransferUtilityUploadRequest request = new TransferUtilityUploadRequest();

        if (subDirectoryInBucket == "" || subDirectoryInBucket == null)
        {
            request.BucketName = bucketName; //no subdirectory just bucket name
        }
        else
        {   // subdirectory and bucket name
            request.BucketName = bucketName + @"/" + subDirectoryInBucket;
        }
        request.Key = fileNameInS3 ; //file name up in S3
        request.FilePath = localFilePath; //local file name
        utility.Upload(request); //commensing the transfer

        return true; //indicate that the file was sent
    }
  }
}

5-添加配置文件:在解决方案资源管理器中右键单击您的项目,然后选择"添加" - >"新项目",然后从列表中选择"应用程序配置文件"类型并单击"添加"按钮.一个名为"App.config"的文件被添加到解决方案中.

6-编辑app.config文件:双击解决方案资源管理器中的"app.config"文件,将出现编辑菜单.用以下文本替换所有文本:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings>
    <add key="AWSProfileName" value="profile1"/>
    <add key="AWSAccessKey" value="your Access Key goes here"/>
    <add key="AWSSecretKey" value="your Secret Key goes here"/>

  </appSettings>
</configuration>

您必须修改上述文本以反映您的Amazon Access Key Id和Secret Access Key.

7-现在在program.cs文件中(记住这是一个控制台应用程序)编写以下代码:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace UploadToS3Demo
{
    class Program
    {
        static void Main(string[] args)
        {
            // preparing our file and directory names
            string fileToBackup = @"d:\mybackupFile.zip" ; // test file
            string myBucketName = "mys3bucketname"; //your s3 bucket name goes here
            string s3DirectoryName = "justdemodirectory";
            string s3FileName = @"mybackupFile uploaded in 12-9-2014.zip";

            AmazonUploader myUploader = new AmazonUploader();
            myUploader.sendMyFileToS3(fileToBackup, myBucketName, s3DirectoryName, s3FileName);
        }
    }
}

8-用您自己的数据替换上面代码中的字符串

9-添加错误纠正,您的程序就绪

Answer 2

@docesam的解决方案适用于旧版本的AWSSDK.以下是AmazonS3最新文档的示例:

1)首先打开Visual Studio(我正在使用VS2015)并创建一个新项目- > ASP.NET Web应用程序- > MVC.

2)浏览Manage Nuget Package,包AWSSDK.S3并安装它.

3)现在创建一个名为的类AmazonS3Uploader,然后复制并粘贴这段代码:

using System;
using Amazon.S3;
using Amazon.S3.Model;

namespace AmazonS3Demo
{
    public class AmazonS3Uploader
    {
        private string bucketName = "your-amazon-s3-bucket";
        private string keyName = "the-name-of-your-file";
        private string filePath = "C:\\Users\\yourUserName\\Desktop\\myImageToUpload.jpg"; 

        public void UploadFile()
        {
            var client = new AmazonS3Client(Amazon.RegionEndpoint.USEast1);

            try
            {
                PutObjectRequest putRequest = new PutObjectRequest
                {
                    BucketName = bucketName,
                    Key = keyName,
                    FilePath = filePath,
                    ContentType = "text/plain"
                };

                PutObjectResponse response = client.PutObject(putRequest);
            }
            catch (AmazonS3Exception amazonS3Exception)
            {
                if (amazonS3Exception.ErrorCode != null &&
                    (amazonS3Exception.ErrorCode.Equals("InvalidAccessKeyId")
                    ||
                    amazonS3Exception.ErrorCode.Equals("InvalidSecurity")))
                {
                    throw new Exception("Check the provided AWS Credentials.");
                }
                else
                {
                    throw new Exception("Error occurred: " + amazonS3Exception.Message);
                }
            }
        }
    }
}

4)编辑你的Web.config文件,添加下面的行<appSettings></appSettings>:

<add key="AWSProfileName" value="any name for your profile"/>
<add key="AWSAccessKey" value="your Access Key goes here"/>
<add key="AWSSecretKey" value="your Secret Key goes here"/>

5)现在UploadFile从HomeController.cs调用你的方法来测试它:

public class HomeController : Controller
    {
        public ActionResult Index()
        {
            AmazonS3Uploader amazonS3 = new AmazonS3Uploader();

            amazonS3.UploadFile();
            return View();
        }
    ....

6)在您的Amazon S3存储桶中找到您的文件,这就是全部.

下载我的演示项目

Answer 3

我已经写了一个关于这个的教程。

使用低级 API 将文件上传到 S3 存储桶：

IAmazonS3 client = new AmazonS3Client("AKI...access-key...", "+8Bo...secrey-key...", RegionEndpoint.APSoutheast2);  

FileInfo file = new FileInfo(@"c:\test.txt");  
string destPath = "folder/sub-folder/test.txt"; // <-- low-level s3 path uses /
PutObjectRequest request = new PutObjectRequest()  
{  
    InputStream = file.OpenRead(),  
    BucketName = "my-bucket-name",  
    Key = destPath // <-- in S3 key represents a path  
};  
  
PutObjectResponse response = client.PutObject(request); 

使用高级 API 将文件上传到 S3 存储桶：

IAmazonS3 client = new AmazonS3Client("AKI...access-key...", "+8Bo...secrey-key...", RegionEndpoint.APSoutheast2);  

FileInfo localFile = new FileInfo(@"c:\test.txt");  
string destPath = @"folder\sub-folder\test.txt"; // <-- high-level s3 path uses \
 
S3FileInfo s3File = new S3FileInfo(client, "my-bucket-name", destPath);  
if (!s3File.Exists)  
{  
    using (var s3Stream = s3File.Create()) // <-- create file in S3  
    {  
        localFile.OpenRead().CopyTo(s3Stream); // <-- copy the content to S3  
    }  
}  

Answer 4

@mejiamanuel57 的解决方案适用于 15MB 以下的小文件。对于较大的文件，我得到了System.Net.Sockets.SocketException: The I/O operation has been aborted because of either a thread exit or an application request. 以下改进的解决方案适用于较大的文件（使用 50MB 文件进行测试）：

...
public void UploadFile()
{
    var client = new AmazonS3Client(Amazon.RegionEndpoint.USEast1);
    var transferUtility = new TransferUtility(client);

    try
    {
        TransferUtilityUploadRequest transferUtilityUploadRequest = new TransferUtilityUploadRequest
        {
            BucketName = bucketName,
            Key = keyName,
            FilePath = filePath,
            ContentType = "text/plain"
        };

        transferUtility.Upload(transferUtilityUploadRequest); // use UploadAsync if possible
    }
...

更多信息请点击这里。