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using Aliyun.OSS;
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using Aliyun.OSS.Common;
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using System;
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using System.IO;
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using System.Net;
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namespace Magic.Core;
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/// <summary>
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/// 阿里云oss文件上传工具类
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/// </summary>
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public class OSSClientUtil
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{
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private static readonly string _accessKeyId = "accessKeyId";
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private static readonly string _accessKeySecret = "accessKeySecret";
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//const string endpoint = "oss-cn-huhehaote-internal.aliyuncs.com";
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private static readonly string _internalEndpoint = "internalEndpoint"; //内网传输连接
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private const string _endpoint = "oss-cn-beijing.aliyuncs.com"; //"oss-cn-beijing.aliyuncs.com";// "oss-cn-huhehaote-internal.aliyuncs.com";//"oss-cn-huhehaote.aliyuncs.com" ;
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private static readonly string _bucketName = "bucketName";
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public static OssClient GetClient()
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{
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return new OssClient(_endpoint, _accessKeyId, _accessKeySecret);
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}
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public static OssClient GetClient_CND()
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{
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var conf = new ClientConfiguration
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{
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IsCname = true
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};
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return new OssClient("cdnmedia.aliyuncs.com", _accessKeyId, _accessKeySecret, conf);
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}
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public static OssClient GetClient_internal()
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{
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return new OssClient(_internalEndpoint, _accessKeyId, _accessKeySecret);
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}
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/// <summary>
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/// 上传本地文件(走阿里云内网传输)
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/// </summary>
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/// <param name="objectName"></param>
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/// <param name="localFilename"></param>
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/// <returns></returns>
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public static bool PushMedia_internal(string objectName, string localFilename)
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{
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var client = GetClient_internal();
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return client.PutObject(_bucketName, objectName, localFilename).HttpStatusCode == System.Net.HttpStatusCode.OK;
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}
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/// <summary>
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/// 上传一个图片
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/// </summary>
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/// <param name="base64Code">图片经过base64加密后的结果</param>
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/// <param name="fileName">文件名,例如:Emplyoee/dzzBack.jpg</param>
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public static bool PushImg(string base64Code, string fileName)
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{
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var client = GetClient();
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var stream = new MemoryStream(Convert.FromBase64String(base64Code));
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return client.PutObject(_bucketName, fileName, stream).HttpStatusCode == System.Net.HttpStatusCode.OK;
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}
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public static bool PushMedia(Stream stream, string fileName)
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{
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var client = GetClient();
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return client.PutObject(_bucketName, fileName, stream).HttpStatusCode == System.Net.HttpStatusCode.OK;
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}
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/// <summary>
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/// 上传本地文件
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/// </summary>
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/// <param name="objectName"></param>
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/// <param name="localFilename"></param>
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/// 返回参数说明 1.本地文件不存在 2.文件oss上已存在 3.上传失败 4.上传成功
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/// <returns></returns>
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public static int PushMedia(string objectName, string localFilename)
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{
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if (!File.Exists(localFilename)) return 1;
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if (DoesObjectExist(objectName)) return 2; // 存在文件
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try
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{
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var client = GetClient();
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//MemoryStream stream = new MemoryStream(Convert.FromBase64String(base64Code));
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//var metadata = new ObjectMetadata();
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//metadata.ContentType = TypeTo(contentType);
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if (localFilename.Contains("http"))
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{
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var webClient = new WebClient { Credentials = CredentialCache.DefaultCredentials };
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var stream = webClient.DownloadData(localFilename);
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var ms = new MemoryStream(stream);
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var c = client.PutObject(_bucketName, objectName, ms);
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if (c.HttpStatusCode == System.Net.HttpStatusCode.OK) { return 4; } else { return 3; }
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}
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else
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{
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var c = client.PutObject(_bucketName, objectName, localFilename);
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if (c.HttpStatusCode == System.Net.HttpStatusCode.OK) { return 4; } else { return 3; }
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}
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}
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catch
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{
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return 3;
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}
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}
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/// <summary>
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/// 上传一个图片
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/// </summary>
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/// <param name="filebyte">图片字节 </param>
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/// <param name="fileName">文件名,例如:Emplyoee/dzzBack.jpg</param>
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/// <param name="md5"></param>
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public static bool PushImg(byte[] filebyte, string fileName, out string md5)
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{
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var client = GetClient();
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var stream = new MemoryStream(filebyte, 0, filebyte.Length);
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var result = client.PutObject(_bucketName, fileName, stream);
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md5 = result.ResponseMetadata["Content-MD5"];
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return result.HttpStatusCode == System.Net.HttpStatusCode.OK;
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}
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/// <summary>
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/// 获取鉴权后的URL,URL有效日期默认一小时
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/// </summary>
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/// <param name="fileName">文件名,例如:Emplyoee/dzzBack.jpg</param>
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/// <returns></returns>
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public static string GetImg(string fileName)
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{
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var client = GetClient();
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var key = fileName;
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var req = new GeneratePresignedUriRequest(_bucketName, key, SignHttpMethod.Get)
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{
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Expiration = DateTime.Now.AddHours(1)
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};
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return client.GeneratePresignedUri(req).ToString();
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}
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/// <summary>
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/// 获取鉴权后的URL
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/// </summary>
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/// <param name="fileName">文件名,例如:Emplyoee/dzzBack.jpg</param>
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/// <param name="expiration">URL有效日期,例如:DateTime.Now.AddHours(1) </param>
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/// <returns></returns>
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public static string GetImg(string fileName, DateTime expiration)
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{
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var client = GetClient();
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var key = fileName;
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var req = new GeneratePresignedUriRequest(_bucketName, key, SignHttpMethod.Get)
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{
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Expiration = expiration
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};
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return client.GeneratePresignedUri(req).ToString();
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}
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/// <summary>
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/// 将文件转换成byte[] 数组
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/// </summary>
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/// <param name="fileUrl">文件路径文件名称</param>
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/// <returns>byte[]</returns>
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private byte[] AuthGetFileData(string fileUrl)
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{
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using (var fs = new FileStream(fileUrl, FileMode.OpenOrCreate, FileAccess.ReadWrite))
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{
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byte[] buffur = new byte[fs.Length];
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using (BinaryWriter bw = new BinaryWriter(fs))
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{
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bw.Write(buffur);
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bw.Close();
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}
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return buffur;
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}
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}
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/// <summary>
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/// 删除文件
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/// </summary>
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/// <param name="fileCode">文件id</param>
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/// <returns>文件url</returns>
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public static bool DeletefileCode(string fileCode)
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{
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if (string.IsNullOrEmpty(fileCode))
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return true;
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//检查fileCode磁盘中是否存在此文件
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if (File.Exists(fileCode))
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{
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File.Delete(fileCode);
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return true;
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}
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var client = GetClient();
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client.DeleteObject(_bucketName, fileCode);
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return true;
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}
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/// <summary>
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/// 删除文件夹
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/// </summary>
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/// <param name="prefix">文件id</param>
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/// <returns>文件url</returns>
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public static bool DeleteFolder(string prefix)
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{
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if (string.IsNullOrEmpty(prefix))
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return true;
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var client = GetClient();
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var listObjectsRequest = new ListObjectsRequest(_bucketName);
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listObjectsRequest.Prefix = prefix;
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var result = client.ListObjects(listObjectsRequest);
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foreach (var summary in result.ObjectSummaries)
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{
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client.DeleteObject(_bucketName, summary.Key);
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}
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return false;
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}
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/// <summary>
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/// 判断文件是否存在
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/// </summary>
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/// <param name="fileName"></param>
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/// <returns></returns>
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public static bool DoesObjectExist(string fileName)
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{
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var client = GetClient();
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// 判断文件是否存在。
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var exist = client.DoesObjectExist(_bucketName, fileName);
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return exist;
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}
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/// <summary>
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/// 类型转换
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/// </summary>
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/// <returns></returns>
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public static string TypeTo(string type)
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{
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type = type switch
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{
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"mp4" => "video/mp4",
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"mp3" => "audio/mp3",
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_ => "image/" + type,
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};
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return type;
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}
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public static OssObject DownLoad(String fileName)
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{
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//var client = GetClient();
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//DateTime expiration = new DateTime().AddHours(1);
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//GeneratePresignedUriRequest request = new GeneratePresignedUriRequest(bucketName, fileName, SignHttpMethod.Get);
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//// 设置过期时间。
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//request.Expiration=expiration;
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//// 生成签名URL（HTTP GET请求）。
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//Uri signedUrl = client.GeneratePresignedUri(request);
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//// 添加GetObject请求头。
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////customHeaders.put("Range", "bytes=100-1000");
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//OssObject result = client.GetObject(signedUrl);
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var client = GetClient();
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var key = fileName;
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_ = new GeneratePresignedUriRequest(_bucketName, key, SignHttpMethod.Get)
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{
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Expiration = DateTime.Now.AddHours(1)
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};
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return client.GetObject(_bucketName, key);
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}
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}
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