四、C#简单操作MinIO
MinIO的官方网站非常详细，以下只是本人学习过程的整理
Healper类
using Minio; using Minio.DataModel; using Minio.Exceptions; using System; using System.Collections.Generic; using System.IO; using System.Text; using System.Threading; using System.Threading.Tasks; namespace TestMinIO { public static class MinIO { #region 操作存储桶 /// <summary>创建存储桶 /// 创建存储桶 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="loc">可选参数</param> /// <returns></returns> public async static Task<bool> MakeBucket(MinioClient minio, string bucketName, string loc = "us-east-1") { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { throw new Exception(string.Format("存储桶[{0}]已存在", bucketName)); } else { await minio.MakeBucketAsync(bucketName, loc); flag = true; } } catch (Exception e) { throw new Exception(e.Message); } return flag; } /// <summary>列出所有的存储桶 /// 列出所有的存储桶 /// </summary> /// <param name="minio">连接实例</param> /// <returns></returns> public async static Task<Tuple<bool, Minio.DataModel.ListAllMyBucketsResult>> ListBuckets(MinioClient minio) { bool flag = false; var list = new Minio.DataModel.ListAllMyBucketsResult(); try { list = await minio.ListBucketsAsync(); flag = true; //foreach (var bucket in list.Buckets) //{ // Console.WriteLine($"{bucket.Name} {bucket.CreationDateDateTime}"); //} } catch (Exception e) { throw new Exception(e.Message); } return Tuple.Create(flag, list); } /// <summary>检查存储桶是否存在 /// 检查存储桶是否存在 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <returns></returns> public async static Task<bool> BucketExists(MinioClient minio, string bucketName) { bool flag = false; try { flag = await minio.BucketExistsAsync(bucketName); } catch (Exception e) { throw new Exception(e.Message); } return flag; } /// <summary>删除一个存储桶 /// 删除一个存储桶 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <returns></returns> public async static Task<bool> RemoveBucket(MinioClient minio, string bucketName) { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { await minio.RemoveBucketAsync(bucketName); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (Exception e) { throw new Exception(e.Message); } return flag; } /// <summary>列出存储桶里的对象 /// 列出存储桶里的对象 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="prefix">对象的前缀</param> /// <param name="recursive">true代表递归查找，false代表类似文件夹查找，以'/'分隔，不查子文件夹</param> public static Tuple<bool, IObservable<Item>> ListObjects(MinioClient minio, string bucketName, string prefix = null, bool recursive = true) { bool flag = false; IObservable<Item> observable = null; try { var found = minio.BucketExistsAsync(bucketName); if (found.Result) { observable = minio.ListObjectsAsync(bucketName, prefix, recursive); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } //IDisposable subscription = observable.Subscribe( // item => Console.WriteLine($"Object: {item.Key}"), // ex => Console.WriteLine($"OnError: {ex}"), // () => Console.WriteLine($"Listed all objects in bucket {bucketName}\n")); } catch (Exception e) { throw new Exception(e.Message); } return Tuple.Create(flag, observable); } /// <summary>列出存储桶中未完整上传的对象 /// 列出存储桶中未完整上传的对象 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="prefix">对象的前缀</param> /// <param name="recursive">true代表递归查找，false代表类似文件夹查找，以'/'分隔，不查子文件夹</param> /// <returns></returns> public static Tuple<bool, IObservable<Upload>> ListIncompleteUploads(MinioClient minio, string bucketName, string prefix = null, bool recursive = true) { bool flag = false; IObservable<Upload> observable = null; try { var found = minio.BucketExistsAsync(bucketName); if (found.Result) { observable = minio.ListIncompleteUploads(bucketName, prefix, recursive); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } //IDisposable subscription = observable.Subscribe( // item => Console.WriteLine($"OnNext: {item.Key}"), // ex => Console.WriteLine($"OnError: {ex.Message}"), // () => Console.WriteLine($"Listed the pending uploads to bucket {bucketName}")); } catch (Exception e) { throw new Exception(e.Message); } return Tuple.Create(flag, observable); } #endregion #region 存储桶策略 /// <summary>获取存储桶或者对象前缀的访问权限 /// 获取存储桶或者对象前缀的访问权限 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <returns></returns> public async static Task<Tuple<bool,string>> GetPolicy(MinioClient minio, string bucketName) { bool flag = false; string policyJson = string.Empty; try { var found = minio.BucketExistsAsync(bucketName); if (found.Result) { policyJson = await minio.GetPolicyAsync(bucketName); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (Exception e) { throw new Exception(e.Message); } return Tuple.Create(flag, policyJson); } /// <summary>针对存储桶和对象前缀设置访问策略 /// 针对存储桶和对象前缀设置访问策略 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <returns></returns> public async static Task<bool> SetPolicy(MinioClient minio, string bucketName) { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { string policyJson = $@"{{""Version"":""2012-10-17"",""Statement"":[{{""Action"":[""s3:GetBucketLocation""],""Effect"":""Allow"",""Principal"":{{""AWS"":[""*""]}},""Resource"":[""arn:aws:s3:::{bucketName}""],""Sid"":""""}},{{""Action"":[""s3:ListBucket""],""Condition"":{{""StringEquals"":{{""s3:prefix"":[""foo"",""prefix/""]}}}},""Effect"":""Allow"",""Principal"":{{""AWS"":[""*""]}},""Resource"":[""arn:aws:s3:::{bucketName}""],""Sid"":""""}},{{""Action"":[""s3:GetObject""],""Effect"":""Allow"",""Principal"":{{""AWS"":[""*""]}},""Resource"":[""arn:aws:s3:::{bucketName}/foo*"",""arn:aws:s3:::{bucketName}/prefix/*""],""Sid"":""""}}]}}"; await minio.SetPolicyAsync(bucketName, policyJson); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (Exception e) { throw new Exception(e.Message); } return flag; } #endregion #region 存储桶通知 /// <summary>获取存储桶的通知配置 /// 获取存储桶的通知配置 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <returns></returns> private async static Task<Tuple<bool,string>> GetBucketNotification(MinioClient minio, string bucketName) { bool flag = false; string Ret = string.Empty; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { BucketNotification notifications = await minio.GetBucketNotificationsAsync(bucketName); Ret = notifications.ToXML(); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (MinioException e) { throw new Exception(e.Message); } return Tuple.Create(flag, Ret); } /// <summary>给存储桶设置通知 /// 给存储桶设置通知 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <returns></returns> private async static Task<bool> SetBucketNotification(MinioClient minio, string bucketName) { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { BucketNotification notification = new BucketNotification(); Arn topicArn = new Arn("aws", "sns", "us-west-1", "412334153608", "topicminio"); TopicConfig topicConfiguration = new TopicConfig(topicArn); List<EventType> events = new List<EventType>() { EventType.ObjectCreatedPut, EventType.ObjectCreatedCopy }; topicConfiguration.AddEvents(events); topicConfiguration.AddFilterPrefix("images"); topicConfiguration.AddFilterSuffix("jpg"); notification.AddTopic(topicConfiguration); QueueConfig queueConfiguration = new QueueConfig("arn:aws:sqs:us-west-1:482314153608:testminioqueue1"); queueConfiguration.AddEvents(new List<EventType>() { EventType.ObjectCreatedCompleteMultipartUpload }); notification.AddQueue(queueConfiguration); await minio.SetBucketNotificationsAsync(bucketName, notification); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (MinioException e) { throw new Exception(e.Message); } return flag; } /// <summary>删除存储桶上所有配置的通知 /// 删除存储桶上所有配置的通知 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <returns></returns> private async static Task<bool> RemoveAllBucketNotifications(MinioClient minio, string bucketName) { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { await minio.RemoveAllBucketNotificationsAsync(bucketName); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (MinioException e) { throw new Exception(e.Message); } return flag; } #endregion #region 操作文件对象 /// <summary> /// 从桶下载文件到本地 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="objectName">存储桶里的对象名称</param> /// <param name="fileName">本地路径</param> /// <param name="sse"></param> /// <returns></returns> public async static Task<bool> FGetObject(MinioClient minio, string bucketName, string objectName, string fileName, ServerSideEncryption sse = null) { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { if (File.Exists(fileName)) { File.Delete(fileName); } await minio.GetObjectAsync(bucketName, objectName, fileName, sse).ConfigureAwait(false); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (MinioException e) { throw new Exception(e.Message); } return flag; } /// <summary>上传本地文件至存储桶 /// 上传本地文件至存储桶 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="objectName">存储桶里的对象名称</param> /// <param name="fileName">本地路径</param> /// <returns></returns> public async static Task<bool> FPutObject(MinioClient minio, string bucketName, string objectName, string fileName) { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { await minio.PutObjectAsync(bucketName, objectName, fileName, contentType: "application/octet-stream"); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (MinioException e) { throw new Exception(e.Message); } return flag; } #endregion #region Presigned操作 /// <summary>生成一个给HTTP GET请求用的presigned URL。浏览器/移动端的客户端可以用这个URL进行下载，即使其所在的存储桶是私有的。这个presigned URL可以设置一个失效时间，默认值是7天。 /// 生成一个给HTTP GET请求用的presigned URL。浏览器/移动端的客户端可以用这个URL进行下载，即使其所在的存储桶是私有的。这个presigned URL可以设置一个失效时间，默认值是7天。 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="objectName">存储桶里的对象名称</param> /// <param name="expiresInt">失效时间（以秒为单位），默认是7天，不得大于七天</param> /// <param name="reqParams">额外的响应头信息，支持response-expires、response-content-type、response-cache-control、response-content-disposition</param> /// <returns></returns> public async static Task<Tuple<bool, string>> PresignedGetObject(MinioClient minio, string bucketName, string objectName, int expiresInt = 1000) { bool flag = false; string Ret = string.Empty; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { var reqParams = new Dictionary<string, string> { { "response-content-type", "application/json" } }; string presignedUrl = await minio.PresignedGetObjectAsync(bucketName, objectName, expiresInt, reqParams); Ret = presignedUrl; flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (Exception e) { throw new Exception(e.Message); } return Tuple.Create(flag, Ret); } /// <summary>生成一个给HTTP PUT请求用的presigned URL。浏览器/移动端的客户端可以用这个URL进行上传，即使其所在的存储桶是私有的。这个presigned URL可以设置一个失效时间，默认值是7天。 /// 生成一个给HTTP PUT请求用的presigned URL。浏览器/移动端的客户端可以用这个URL进行上传，即使其所在的存储桶是私有的。这个presigned URL可以设置一个失效时间，默认值是7天。 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="objectName">存储桶里的对象名称</param> /// <param name="expiresInt">失效时间（以秒为单位），默认是7天，不得大于七天</param> /// <returns></returns> public async static Task<Tuple<bool, string>> PresignedPutObject(MinioClient minio, string bucketName, string objectName, int expiresInt = 1000) { bool flag = false; string Ret = string.Empty; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { string presignedUrl = await minio.PresignedPutObjectAsync(bucketName, objectName, expiresInt); Ret = presignedUrl; flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (Exception e) { throw new Exception(e.Message); } return Tuple.Create(flag, Ret); } /// <summary>允许给POST请求的presigned URL设置策略，比如接收对象上传的存储桶名称的策略，key名称前缀，过期策略。 /// 允许给POST请求的presigned URL设置策略，比如接收对象上传的存储桶名称的策略，key名称前缀，过期策略。 /// </summary> /// <param name="minio">连接实例</param> /// <param name="PostPolicy">对象的post策略</param> /// <returns></returns> public async static Task<Tuple<bool, string, Dictionary<string, string>>> PresignedPostPolicy(MinioClient minio) { bool flag = false; Tuple<string, Dictionary<string, string>> tdic = null; try { PostPolicy form = new PostPolicy(); DateTime expiration = DateTime.UtcNow; form.SetExpires(expiration.AddDays(10)); form.SetKey("my-objectname"); form.SetBucket("my-bucketname"); Tuple<string, Dictionary<string, string>> tuple = await minio.PresignedPostPolicyAsync(form); tdic = tuple; flag = true; //string curlCommand = "curl -X POST "; //foreach (KeyValuePair<string, string> pair in tuple.Item2) //{ // curlCommand = curlCommand + $" -F {pair.Key}={pair.Value}"; //} //curlCommand = curlCommand + " -F file=@/etc/bashrc " + tuple.Item1; // https://s3.amazonaws.com/my-bucketname"; } catch (Exception e) { throw new Exception(e.Message); } return Tuple.Create(flag, tdic.Item1, tdic.Item2); } #endregion #region 操作对象 /// <summary>返回对象数据的流 /// 返回对象数据的流 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="objectName">存储桶里的对象名称</param> /// <param name="callback">处理流的回调函数</param> /// <returns></returns> public async static Task<bool> GetObjectAsync(MinioClient minio, string bucketName, string objectName, Action<Stream> callback) { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { await minio.StatObjectAsync(bucketName, objectName); await minio.GetObjectAsync(bucketName, objectName, callback); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (MinioException e) { throw new Exception(e.Message); } return flag; } /// <summary>下载对象指定区域的字节数组做为流。offset和length都必须传 /// 下载对象指定区域的字节数组做为流。offset和length都必须传 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="objectName">存储桶里的对象名称</param> /// <param name="offset">offset 是起始字节的位置</param> /// <param name="length">length是要读取的长度</param> /// <param name="callback">处理流的回调函数</param> /// <returns></returns> public async static Task<bool> GetObjectAsync(MinioClient minio, string bucketName, string objectName, long offset, long length, Action<Stream> callback) { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { await minio.StatObjectAsync(bucketName, objectName); await minio.GetObjectAsync(bucketName, objectName, offset, length, callback); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (MinioException e) { throw new Exception(e.Message); } return flag; } /// <summary>下载并将文件保存到本地文件系统 /// 下载并将文件保存到本地文件系统 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="objectName">存储桶里的对象名称</param> /// <param name="fileName">本地文件路径</param> /// <returns></returns> public async static Task<bool> GetObjectAsync(MinioClient minio, string bucketName, string objectName, string fileName) { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { if (File.Exists(fileName)) { File.Delete(fileName); } await minio.StatObjectAsync(bucketName, objectName); await minio.GetObjectAsync(bucketName, objectName, fileName); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (MinioException e) { throw new Exception(e.Message); } return flag; } /// <summary>通过文件上传到对象中 /// 通过文件上传到对象中 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="objectName">存储桶里的对象名称</param> /// <param name="filePath">要上传的本地文件名</param> /// <param name="contentType">文件的Content type，默认是"application/octet-stream"</param> /// <param name="metaData">元数据头信息的Dictionary对象，默认是null</param> /// <returns></returns> public async static Task<bool> PutObjectAsync(MinioClient minio, string bucketName, string objectName, string filePath, string contentType = "application/octet-stream", Dictionary<string, string> metaData = null) { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { await minio.PutObjectAsync(bucketName, objectName, filePath, contentType, metaData); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (Exception e) { throw new Exception(e.Message); } return flag; } /// <summary>通过Stream上传对象 /// 通过Stream上传对象 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="objectName">存储桶里的对象名称</param> /// <param name="data">要上传的Stream对象</param> /// <param name="size">流的大小</param> /// <param name="contentType">文件的Content type，默认是"application/octet-stream"</param> /// <param name="metaData">元数据头信息的Dictionary对象，默认是null</param> /// <returns></returns> public async static Task<bool> PutObjectAsync(MinioClient minio, string bucketName, string objectName, Stream data, long size, string contentType = "application/octet-stream", Dictionary<string, string> metaData = null) { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { //byte[] bs = File.ReadAllBytes(fileName); //System.IO.MemoryStream filestream = new System.IO.MemoryStream(bs); await minio.PutObjectAsync(bucketName, objectName, data, size, contentType, metaData); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (MinioException e) { throw new Exception(e.Message); } return flag; } /// <summary>获取对象的元数据 /// 获取对象的元数据 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="objectName">存储桶里的对象名称</param> /// <returns></returns> public async static Task<bool> StatObject(MinioClient minio, string bucketName, string bucketObject) { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { ObjectStat statObject = await minio.StatObjectAsync(bucketName, bucketObject); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (MinioException e) { throw new Exception(e.Message); } return flag; } /// <summary>从objectName指定的对象中将数据拷贝到destObjectName指定的对象 /// 从objectName指定的对象中将数据拷贝到destObjectName指定的对象 /// </summary> /// <param name="minio"></param> /// <param name="fromBucketName">源存储桶名称</param> /// <param name="fromObjectName">源存储桶中的源对象名称</param> /// <param name="destBucketName">目标存储桶名称</param> /// <param name="destObjectName">要创建的目标对象名称,如果为空，默认为源对象名称</param> /// <param name="copyConditions">拷贝操作的一些条件Map</param> /// <param name="sseSrc"></param> /// <param name="sseDest"></param> /// <returns></returns> public async static Task<bool> CopyObject(MinioClient minio, string fromBucketName, string fromObjectName, string destBucketName, string destObjectName, CopyConditions copyConditions = null, ServerSideEncryption sseSrc = null, ServerSideEncryption sseDest = null) { bool flag = false; try { bool found = await minio.BucketExistsAsync(fromBucketName); if (!found) { throw new Exception(string.Format("源存储桶[{0}]不存在", fromBucketName)); } bool foundtwo = await minio.BucketExistsAsync(destBucketName); if (!foundtwo) { throw new Exception(string.Format("目标存储桶[{0}]不存在", destBucketName)); } await minio.CopyObjectAsync(fromBucketName, fromObjectName, destBucketName, destObjectName, copyConditions, null, sseSrc, sseDest); flag = true; } catch (MinioException e) { throw new Exception(e.Message); } return flag; } /// <summary>删除一个对象 /// 删除一个对象 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="objectName">存储桶里的对象名称</param> /// <returns></returns> public async static Task<bool> RemoveObject(MinioClient minio, string bucketName, string objectName) { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { await minio.RemoveObjectAsync(bucketName, objectName); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (MinioException e) { throw new Exception(e.Message); } return flag; } /// <summary>删除多个对象 /// 删除多个对象 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="objectsList">含有多个对象名称的IEnumerable</param> /// <returns></returns> public static async Task<bool> RemoveObjects(MinioClient minio, string bucketName, List<string> objectsList) { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { if (objectsList != null) { IObservable<DeleteError> objectsOservable = await minio.RemoveObjectAsync(bucketName, objectsList).ConfigureAwait(false); flag = true; //IDisposable objectsSubscription = objectsOservable.Subscribe( // objDeleteError => Console.WriteLine($"Object: {objDeleteError.Key}"), // ex => Console.WriteLine($"OnError: {ex}"), // () => // { // Console.WriteLine($"Removed objects in list from {bucketName}\n"); // }); //return; } } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (MinioException e) { throw new Exception(e.Message); } return flag; } /// <summary>删除一个未完整上传的对象 /// 删除一个未完整上传的对象 /// </summary> /// <param name="minio">连接实例</param> /// <param name="bucketName">存储桶名称</param> /// <param name="objectName">存储桶里的对象名称</param> /// <returns></returns> public async static Task<bool> RemoveIncompleteUpload(MinioClient minio, string bucketName, string objectName) { bool flag = false; try { bool found = await minio.BucketExistsAsync(bucketName); if (found) { await minio.RemoveIncompleteUploadAsync(bucketName, objectName); flag = true; } else { throw new Exception(string.Format("存储桶[{0}]不存在", bucketName)); } } catch (MinioException e) { throw new Exception(e.Message); } return flag; } #endregion } }
枚举类
using System; using System.Collections.Generic; using System.Text; namespace TestMinIO { /// <summary>ContentType枚举类 /// ContentType枚举类 /// </summary> public enum Content_Type { bmp, biz, exe, gif, html, ico, img, jpe, jpeg, jpg, movie, mp3, mp4, pdf, png, ppt, txt, xls, xsl, apk } /// <summary>ContentType枚举帮助类 /// ContentType枚举帮助类 /// </summary> public static class Helper { /// <summary> /// 根据枚举返回ContentType /// </summary> /// <param name="type">枚举类型</param> /// <returns></returns> public static string DoContentType(Content_Type type) { string Result = "application/octet-stream"; switch (type) { case Content_Type.bmp: Result = "application/x-bmp"; break; case Content_Type.biz: Result = "text/xml"; break; case Content_Type.exe: Result = "application/x-msdownload"; break; case Content_Type.gif: Result = "image/gif"; break; case Content_Type.html: Result = "text/html"; break; case Content_Type.ico: Result = "image/x-icon"; break; case Content_Type.img: Result = "application/x-img"; break; case Content_Type.jpe: Result = "image/jpeg"; break; case Content_Type.jpeg: Result = "image/jpeg"; break; case Content_Type.jpg: Result = "image/jpeg"; break; case Content_Type.movie: Result = "video/x-sgi-movie"; break; case Content_Type.mp3: Result = "audio/mp3"; break; case Content_Type.mp4: Result = "video/mpeg4"; break; case Content_Type.pdf: Result = "application/pdf"; break; case Content_Type.png: Result = "image/png"; break; case Content_Type.ppt: Result = "application/x-ppt"; break; case Content_Type.txt: Result = "text/plain"; break; case Content_Type.xls: Result = "application/x-xls"; break; case Content_Type.xsl: Result = "text/xml"; break; case Content_Type.apk: Result = "application/vnd.android.package-archive"; break; } return Result; } } }
调用方法很简单，此处就不展示啦
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本文来自博客园，作者：yangleiyu，转载请注明原文链接：https://www.cnblogs.com/yangleiyu/p/15020274.html
