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S3Demo/GetObject.cs

@@ -1,85 +0,0 @@
-// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
-// SPDX-License-Identifier:  Apache-2.0
-
-namespace S3Demo
-{
-    using System;
-    using System.IO;
-    using System.Threading.Tasks;
-    using Amazon;
-    using Amazon.Runtime;
-    using Amazon.S3;
-    using Amazon.S3.Model;
-
-    /// <summary>
-    /// This example shows how to use the Amazon Simple Storage System
-    /// (Amazon S3) client to copy an object from an Amazon S3 bucket to
-    /// another location such as your local system. The code uses the AWS
-    /// SDK for .NET version 3.7 and .NET Core 5.0.
-    /// </summary>
-    class GetObject
-    {
-        public static async Task Readobjectdata(string bucketName, string keyName, BasicAWSCredentials credentials, AmazonS3Config conf)
-        {
-            //const string bucketName = "doc-example-bucket";
-            //const string keyName = "filetodownload";
-
-            // If the Amazon Region where the S3 bucket was created is not
-            // the same as the region defined for the default user, specify
-            // the region as a parameter to the client constructor.
-            // For example: RegionEndpoint.USWest2;
-            IAmazonS3 client = new AmazonS3Client(credentials, conf);
-            await ReadObjectDataAsync(client, bucketName, keyName);
-        }
-
-        /// <summary>
-        /// This method copies the contents of the object keyName to another
-        /// location, for example, to your local system.
-        /// </summary>
-        /// <param name="client">The initialize S3 client used to call
-        /// GetObjectAsync.</param>
-        /// <param name="bucketName">The name of the S3 bucket which contains
-        /// the object to copy.</param>
-        /// <param name="keyName">The name of the object you want to copy.</param>
-        static async Task ReadObjectDataAsync(IAmazonS3 client, string bucketName, string keyName)
-        {
-            string responseBody = string.Empty;
-
-            try
-            {
-                GetObjectRequest request = new GetObjectRequest
-                {
-                    BucketName = bucketName,
-                    Key = keyName,
-                };
-
-                using (GetObjectResponse response = await client.GetObjectAsync(request))
-                using (Stream responseStream = response.ResponseStream)
-                using (StreamReader reader = new StreamReader(responseStream))
-                {
-                    // Assume you have "title" as medata added to the object.
-                    string title = response.Metadata["x-amz-meta-title"];
-                    string contentType = response.Headers["Content-Type"];
-                    int tag = response.TagCount;
-                    foreach (var item in response.Key)
-                    {
-                        Console.WriteLine($"Object tag: {item}");
-                    }
-                    Console.WriteLine($"Object metadata, Title: {title}");
-                    Console.WriteLine($"Content type: {contentType}");
-
-                    // Retrieve the contents of the file.
-                    responseBody = reader.ReadToEnd();
-
-                    // Write the contents of the file to disk.
-                    string filePath = $"C:\\Temp\\copy_of_{keyName}";
-                }
-            }
-            catch (AmazonS3Exception e)
-            {
-                // If the bucket or the object do not exist
-                Console.WriteLine($"Error: '{e.Message}'");
-            }
-        }
-    }
-}

S3Demo/Model/BucketModel.cs

@@ -0,0 +1,46 @@
+// 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;
+        }
+
+    }
+}

S3Demo/Model/ObjectModel.cs

@@ -1,23 +1,20 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
-// SPDX-License-Identifier:  Apache-2.0
+// SPDX - License - Identifier: Apache - 2.0
 
-namespace S3Demo
+using System;
-{
+using System.Collections.Generic;
-    using System;
+using System.IO;
-    using System.Collections.Generic;
+using System.Threading.Tasks;
-    using System.Threading.Tasks;
+using Amazon;
-    using Amazon;
+using Amazon.Runtime;
-    using Amazon.Runtime;
+using Amazon.S3;
-    using Amazon.S3;
+using Amazon.S3.Model;
-    using Amazon.S3.Model;
 
-    /// <summary>
+namespace S3Demo.Model
-    /// This example shows how to work with tags in Amazon Simple Storage
+{
-    /// System (Amazon S3) objects. The example was created using the AWS SDK
+    class ObjectModel
-    /// for .NET version 3.7 and .NET Core 5.0.
-    /// </summary>
-    public class ObjectTag
     {
+        #region 发送对象(带标签)
         public static async Task Putobjectswithtags(string bucketName, string keyName, string filePath, string[] tags, BasicAWSCredentials credentials, AmazonS3Config conf)
         {
             //string bucketName = "doc-example-bucket";
@@ -112,5 +109,77 @@ namespace S3Demo
                         $"Error: '{ex.Message}'");
             }
         }
+        #endregion
+
+        #region 查找对象
+        public static async Task Readobjectdata(string bucketName, string keyName, BasicAWSCredentials credentials, AmazonS3Config conf)
+        {
+            //const string bucketName = "doc-example-bucket";
+            //const string keyName = "filetodownload";
+
+            // If the Amazon Region where the S3 bucket was created is not
+            // the same as the region defined for the default user, specify
+            // the region as a parameter to the client constructor.
+            // For example: RegionEndpoint.USWest2;
+            IAmazonS3 client = new AmazonS3Client(credentials, conf);
+            await ReadObjectDataAsync(client, bucketName, keyName);
+        }
+
+        /// <summary>
+        /// This method copies the contents of the object keyName to another
+        /// location, for example, to your local system.
+        /// </summary>
+        /// <param name="client">The initialize S3 client used to call
+        /// GetObjectAsync.</param>
+        /// <param name="bucketName">The name of the S3 bucket which contains
+        /// the object to copy.</param>
+        /// <param name="keyName">The name of the object you want to copy.</param>
+        static async Task ReadObjectDataAsync(IAmazonS3 client, string bucketName, string keyName)
+        {
+            string responseBody = string.Empty;
+
+            try
+            {
+                GetObjectRequest request = new GetObjectRequest
+                {
+                    BucketName = bucketName,
+                    Key = keyName,
+                };
+                // Get tag
+                GetObjectTaggingRequest getTagsRequest = new()
+                {
+                    BucketName = bucketName,
+                    Key = keyName,
+                };
+                GetObjectTaggingResponse objectTags = await client.GetObjectTaggingAsync(getTagsRequest);
+                // Display the tag values.
+                objectTags.Tagging
+                    .ForEach(t => Console.WriteLine($"Key: {t.Key}, Value: {t.Value}"));
+
+                using (GetObjectResponse response = await client.GetObjectAsync(request))
+                using (Stream responseStream = response.ResponseStream)
+                using (StreamReader reader = new StreamReader(responseStream))
+                {
+                    // Assume you have "title" as medata added to the object.
+                    string title = response.Metadata["x-amz-meta-title"];
+                    string contentType = response.Headers["Content-Type"];
+                    Console.WriteLine($"Object keyName: {response.Key}");
+                    Console.WriteLine($"Object metadata, Title: {title}");
+                    Console.WriteLine($"Content type: {contentType}");
+
+                    // Retrieve the contents of the file.
+                    responseBody = reader.ReadToEnd();
+
+                    // Write the contents of the file to disk.
+                    string filePath = $"C:\\Temp\\copy_of_{keyName}";
+                }
+            }
+            catch (AmazonS3Exception e)
+            {
+                // If the bucket or the object do not exist
+                Console.WriteLine($"Error: '{e.Message}'");
+            }
+        }
+        #endregion
     }
 }

S3Demo/Run.cs

@@ -2,6 +2,8 @@
 using Amazon.Runtime;
 using Amazon.S3;
 using System;
+using S3Demo.Stack;
+using S3Demo.Model;
 using System.Threading.Tasks;
 
 namespace S3Demo
@@ -27,22 +29,38 @@ namespace S3Demo
         {
             try
             {
-                //uploaddir
+                //upload Dir
                 string dirPath = @"C:\Users\song\Pictures\Saved Pictures\";
                 string suffix = "*.png";
                 //await UploadDirMPUHighLevelAPI.Uploaderdir(bucketName, dirPath, suffix, credentials, conf);
 
-                //uploadfile
+                //upload File
-                string keyName = "360.png";
+                string keyName = "logo.png";
                 //await UploadFileMPUHighLevelAPI.Uploaderfile(bucketName, keyName, dirPath, credentials, conf);
 
-                //objectTag
+                //list Objects
+                //await ListObjects.Listingobjects(bucketName, credentials, conf);
+
+                //upload Object With Tag
                 string filaPath = @"C:\Users\song\Pictures\Saved Pictures\" + keyName;
                 String[] tags = new String[] { "SN123456", DateTime.Now.ToString("yyyy-MM-dd'T'HH:mm:sszzz"), "AB023" };
-                await ObjectTag.Putobjectswithtags(bucketName, keyName, filaPath, tags, credentials, conf);
+                //await ObjectModel.Putobjectswithtags(bucketName, keyName, filaPath, tags, credentials, conf);
+
+                //read Object
+                await ObjectModel.Readobjectdata(bucketName, keyName, credentials, conf);
 
-                //getObject
+                //isExist Bucket
-                //await GetObject.Readobjectdata(bucketName, keyName, credentials, conf);
+                //从"minio/test"中取出存储桶名
+                var _bucketName = bucketName.Split('/')[1];
+                var flag = await BucketModel.isExistBucket(_bucketName, credentials, conf);
+                if (flag)
+                {
+                    Console.WriteLine("exist");
+                }
+                else
+                {
+                    Console.WriteLine("not exist");
+                }
             }
             catch (Exception ex)
             {

S3Demo/S3Demo.csproj

@@ -51,12 +51,13 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="GetObject.cs" />
+    <Compile Include="Model\BucketModel.cs" />
-    <Compile Include="ObjectTag.cs" />
+    <Compile Include="Model\ObjectModel.cs" />
+    <Compile Include="Stack\ListObjects.cs" />
     <Compile Include="Run.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
-    <Compile Include="UploadDirMPUHighLevelAPI.cs" />
+    <Compile Include="Stack\UploadDirMPUHighLevelAPI.cs" />
-    <Compile Include="UploadFileMPUHighLevelAPI.cs" />
+    <Compile Include="Stack\UploadFileMPUHighLevelAPI.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="App.config" />

S3Demo/Stack/ListObjects.cs

@@ -0,0 +1,72 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier:  Apache-2.0
+
+/// <summary>
+/// List the objects in an Amazon Simple Storage Service (Amazon S3) bucket.
+/// The example was created using the AWS SDK for .NET version 3.7 and
+/// .NET Core 5.0.
+/// </summary>
+namespace S3Demo.Stack
+{
+    // snippet-start:[S3.dotNET.ListObjectsExample]
+    using System;
+    using System.Threading.Tasks;
+    using Amazon.Runtime;
+    using Amazon.S3;
+    using Amazon.S3.Model;
+
+    public class ListObjects
+    {
+        public static async Task Listingobjects(string bucketName, BasicAWSCredentials credentials, AmazonS3Config conf)
+        {
+            //string bucketName = "doc-example-bucket";
+            IAmazonS3 client;
+
+            using (client = new AmazonS3Client(credentials, conf))
+            {
+                Console.WriteLine($"Listing objects stored in the bucket {bucketName}.");
+                await ListingObjectsAsync(client, bucketName);
+            }
+        }
+
+        /// <summary>
+        /// Uses the client object to get a  list of the objects in the Amazon
+        /// S3 bucket in the bucketName parameter.
+        /// </summary>
+        /// <param name="client">The initialized S3 client obect used to call
+        /// the ListObjectsAsync method.</param>
+        /// <param name="bucketName">The bucket name for which you want to
+        /// retrieve a list of objects.</param>
+        public static async Task ListingObjectsAsync(IAmazonS3 client, string bucketName)
+        {
+            try
+            {
+                ListObjectsV2Request request = new()
+                {
+                    BucketName = bucketName,
+                    MaxKeys = 5,
+                };
+
+                var response = new ListObjectsV2Response();
+
+                do
+                {
+                    response = await client.ListObjectsV2Async(request);
+
+                    response.S3Objects
+                        .ForEach(obj => Console.WriteLine($"{obj.Key,-35}{obj.LastModified.ToShortDateString(),10}{obj.Size,10}"));
+
+                    // If the response is truncated, set the request ContinuationToken
+                    // from the NextContinuationToken property of the response.
+                    request.ContinuationToken = response.NextContinuationToken;
+                } while (response.IsTruncated);
+            }
+            catch (AmazonS3Exception ex)
+            {
+                Console.WriteLine($"Error encountered on server. Message:'{ex.Message}' getting list of objects.");
+            }
+        }
+    }
+
+    // snippet-end:[S3.dotNET.ListObjectsExample]
+}

S3Demo/Stack/UploadDirMPUHighLevelAPI.cs

@@ -7,7 +7,7 @@ using Amazon.Runtime;
 using Amazon.S3;
 using Amazon.S3.Transfer;
 
-namespace S3Demo
+namespace S3Demo.Stack
 {
     /// <summary>
     /// This example uses the Amazon Simple Storage Service (Amazon S3)

S3Demo/Stack/UploadFileMPUHighLevelAPI.cs

@@ -7,7 +7,7 @@ using Amazon.Runtime;
 using Amazon.S3;
 using Amazon.S3.Transfer;
 
-namespace S3Demo
+namespace S3Demo.Stack
 {
     /// <summary>
     /// This example shows how to use the TransferUtility api for Amazon Simple