图片或文件上传阿里云服务

 //图片上传到阿里云

        [AcceptVerbs(HttpVerbs.Post)]

        public JsonResult Upload(HttpPostedFileBase fileData, string tupianming)

        {

            if (fileData != null)

            {

                try

                {

                    // 文件上传后的保存路径         

                    var extName = Path.GetExtension(fileData.FileName);

                    if (string.IsNullOrWhiteSpace(extName))

                    {

                        return Json(new { Success = false, Message = "extName is null!" });

                    }

                    var extNameToLower = extName.ToLower();       

                    var accessId = System.Configuration.ConfigurationManager.AppSettings["ossKeyId"];

                    var accessKey = System.Configuration.ConfigurationManager.AppSettings["ossKeySectet"];

                    var bucketName = "xiaoyaodijun"; //System.Configuration.ConfigurationManager.AppSettings["bucketName"];

                    var endpoint = "http://oss-cn-qingdao.aliyuncs.com ";

                    var extenname = ".oss-cn-qingdao.aliyuncs.com/";

                    //图片的存储路径和名字

                    var fileName = "xiaoyao/124" + extNameToLower;

                    OssClient client = new OssClient(endpoint, accessId, accessKey);

                    System.IO.Stream inputStream = fileData.InputStream;

                    ObjectMetadata objectMetadata = new ObjectMetadata();

                    client.PutObject(bucketName, fileName, inputStream, objectMetadata);

                    //返回图片路径

                    AccessControlList bucketAcl = client.GetBucketAcl(bucketName);                 

                    var result = ((!bucketAcl.Grants.Any()) ? client.GeneratePresignedUri(bucketName, fileName, System.DateTime.Now.AddMinutes(5.0)).AbsoluteUri : string.Format("http://{0}{1}{2}", bucketName, extenname, fileName));

                    inputStream.Dispose();



                }

                catch (Exception ex)

                {

                    return Json(new { Success = false, Message = ex.Message });

                }

            }

            else

            {

                return Json(new { Success = false, Message = "请选择要上传的文件！" });

            }



            return null;

        }

 

第二

Step 1. 初始化一个OSSClient

OSSClient是与OSS服务交互的客户端，SDK的OSS操作都是通过OSSClient完成的。



下面代码新建了一个OSSClient:





using Aliyun.OpenServices.OpenStorageService;

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;



namespace AliyunTest

{

    class Program

    {

        static readonly string accessKeyId = "AccessKeyId";

        static readonly string accessKeySecret = "AccessKeySecret";

        //关于这个endPoint，可以参考：http://bbs.aliyun.com/read/149100.html?spm=5176.7189909.0.0.YiwiFw

        static readonly string endPoint = "http://oss-cn-beijing.aliyuncs.com";



        static void Main(string[] args)

        {

            //初始化 OSSClient

            OssClient ossClient = new OssClient(endPoint, accessKeyId, accessKeySecret);



            //使用代码...

        }

    }

}

Step 2. 新建Bucket

Bucket是OSS上的命名空间，相当于数据的容器，可以存储若干数据实体（Object）。



你可以按照下面的代码新建一个Bucket：





    /// <summary>

        /// 新建存储对象容器Bucket

        /// </summary>

        /// <param name="bucketName">容器名称</param>

        void CreateBucket(string bucketName)

        {

            //初始化 OSSClient

            OssClient ossClient = new OssClient(endPoint, accessKeyId, accessKeySecret);



            // 新建一个Bucket

            var bucket = ossClient.CreateBucket(bucketName);



            Console.WriteLine(bucket.CreationDate);

        }

复制代码

 

/// <summary>

        /// 进行对象存储

        /// </summary>

        /// <param name="bucketName">bucket名称</param>

        void PutObject(string bucketName)

        {

            //初始化 OSSClient

            OssClient ossClient = new OssClient(endPoint, accessKeyId, accessKeySecret);



            //定义文件流

            var objStream = new System.IO.FileStream("D:\\example\\test.jpg", System.IO.FileMode.OpenOrCreate);

            //定义 object 描述

            var objMetadata = new ObjectMetadata();

            var objKey = "test.jpg";



            //执行 put 请求，并且返回对象的MD5摘要。

            var putResult = ossClient.PutObject(bucketName, objKey, objStream, objMetadata);



            Console.WriteLine(putResult.ETag);

        }

Object通过InputStream的形式上传到OSS中。在上面的例子里我们可以看出，每上传一个Object，都需要指定和Object关 联的ObjectMetadata。ObjectMetaData是用户对该object的描述，由一系列name-value对组成；其中 ContentLength是必须设置的，以便SDK可以正确识别上传Object的大小。



Put Object请求处理成功后，OSS会将收到文件的MD5值放在返回结果的ETag中。用户可以根据ETag检验上传的文件与本地的是否一致。

/// <summary>

        /// 获取一个存储对象

        /// </summary>

        /// <param name="bucketName">bucket名称</param>

        /// <param name="objKey">对象标识名称</param>

        void GetObject(string bucketName, string objKey)

        {

            //初始化 OSSClient

            OssClient ossClient = new OssClient(endPoint, accessKeyId, accessKeySecret);



            //获取对象

            var obj = ossClient.GetObject(bucketName, objKey);

            //获取Object的输入流

            var objStream = obj.Content;



            //怎么处理数据流，您看着办吧。

            //...



            //最后关闭数据流。

            objStream.Close();

        }

文章来源：http://www.cnblogs.com/easeyeah/p/4109584.html

 三：大文件分块上传

 //切块上传大文件到阿里云

        private void button4_Click(object sender, EventArgs e)

        {

            OpenFileDialog dia = new OpenFileDialog();

            dia.ShowDialog();

            var filePath = dia.FileName;

            var name = dia.SafeFileName;

            UploadBigFile(filePath, name);

        }



        public void UploadBigFile(string filepath, string name)

        {

            var accessId = "mqPwT*****Jw1paW";

            var accessKey = "GM63rs2adiXu******69nSm";

            var bucketName = "xiao***un";

            //oss所在的地区

            var endpoint = "http://oss-cn-qingdao.aliyuncs.com ";

            var extenname = ".oss-cn-qingdao.aliyuncs.com/";

            //后缀

            var extName = Path.GetExtension(filepath);

            var fileName = "xiaoyaofile/" + name;

            OssClient client = new OssClient(endpoint, accessId, accessKey);





            InitiateMultipartUploadRequest initiateMultipartUploadRequest = new InitiateMultipartUploadRequest(bucketName, fileName);

            InitiateMultipartUploadResult initiateMultipartUploadResult = client.InitiateMultipartUpload(initiateMultipartUploadRequest);



            int partSize = 1024 * 1024 * 1;

            FileInfo fi = new FileInfo(filepath);

            int partCount = (int)(fi.Length / partSize);

            if (fi.Length % partSize != 0)

            {

                partCount++;

            }



            List<PartETag> partETags = new List<PartETag>();

            for (int i = 0; i < partCount; i++)

            {

                FileStream fis = File.Open(filepath, FileMode.Open);

                long skipbytes = partSize * i;

                fis.Seek(skipbytes, SeekOrigin.Begin);

                long size = partSize < fi.Length - skipbytes ? partSize : fi.Length - skipbytes;



                UploadPartRequest uploadPartRequest = new UploadPartRequest(bucketName, fileName, initiateMultipartUploadResult.UploadId);

                uploadPartRequest.InputStream = fis;

                uploadPartRequest.PartSize = partSize;

                uploadPartRequest.PartNumber = i + 1;



                UploadPartResult uploadPartResult = client.UploadPart(uploadPartRequest);

                partETags.Add(uploadPartResult.PartETag);



                fis.Close();

                var k = (Convert.ToDouble(i)) / partCount;

                textBox2.Text = (k * 100).ToString();



            }



            CompleteMultipartUploadRequest completeMultipartUploadRequest =

                 new CompleteMultipartUploadRequest(bucketName, fileName, initiateMultipartUploadResult.UploadId);

            if (completeMultipartUploadRequest.PartETags != null)

            {

                for (int i = 0; i < partETags.Count; i++)

                {

                    completeMultipartUploadRequest.PartETags.Add(partETags[i]);

                }

            }

            CompleteMultipartUploadResult completeMultipartUploadResult =

                    client.CompleteMultipartUpload(completeMultipartUploadRequest);

        }