上传字符串

以下代码用于上传字符串：

using System.Text;
using Aliyun.OSS;
var endpoint = "<yourEndpoint>";
var accessKeyId = "<yourAccessKeyId>";
var accessKeySecret = "<yourAccessKeySecret>";
var bucketName = "<yourBucketName>";
var objectName = "<yourObjectName>";
var objectContent = "More than just cloud.";
// 创建OssClient实例。
var client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
    byte[] binaryData = Encoding.ASCII.GetBytes(objectContent);
    MemoryStream requestContent = new MemoryStream(binaryData);
    // 上传文件。
    client.PutObject(bucketName, objectName, requestContent);
    Console.WriteLine("Put object succeeded");
}
catch (Exception ex)
{
    Console.WriteLine("Put object failed, {0}", ex.Message);
}

上传指定的本地文件

上传本地文件的完整代码请参见GitHub。

以下代码用于上传本地文件：

using Aliyun.OSS;
var endpoint = "<yourEndpoint>";
var accessKeyId = "<yourAccessKeyId>";
var accessKeySecret = "<yourAccessKeySecret>";
var bucketName = "<yourBucketName>";
var objectName = "<yourObjectName>";
var localFilename = "<yourLocalFilename>";
// 创建OssClient实例。
var client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
    // 上传文件。
    client.PutObject(bucketName, objectName, localFilename);
    Console.WriteLine("Put object succeeded");
}
catch (Exception ex)
{
    Console.WriteLine("Put object failed, {0}", ex.Message);
}

上传文件并且带MD5校验

为保证SDK发送的数据和OSS服务端接收到的数据一致，可以在ObjectMeta中增加Content-Md5值，这样服务端就会使用这个MD5值做校验。

上传文件并且带MD5校验的完整代码请参见GitHub。

using Aliyun.OSS;
using Aliyun.OSS.Util;
var endpoint = "<yourEndpoint>";
var accessKeyId = "<yourAccessKeyId>";
var accessKeySecret = "<yourAccessKeySecret>";
var bucketName = "<yourBucketName>";
var objectName = "<yourObjectName>";
var localFilename = "<yourLocalFilename>";
// 创建OssClient实例。
var client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
    // 计算MD5。
    string md5;
    using (var fs = File.Open(localFilename, FileMode.Open))
    {
        md5 = OssUtils.ComputeContentMd5(fs, fs.Length);
    }
    var objectMeta = new ObjectMetadata
    {
        ContentMd5 = md5
    };
    // 上传文件。
    client.PutObject(bucketName, objectName, localFilename, objectMeta);
    Console.WriteLine("Put object succeeded");
}
catch (Exception ex)
{
    Console.WriteLine("Put object failed, {0}", ex.Message);
}

异步上传

异步上传的完整代码请参见GitHub。

以下代码用于异步上传：

using System;
using System.IO;
using System.Threading;

using Aliyun.OSS;
using Aliyun.OSS.Common;

// 异步上传。
namespace AsyncPutObject
{
    class Program
    {
        static string endpoint = "<yourEndpoint>";
        static string accessKeyId = "<yourAccessKeyId>";
        static string accessKeySecret = "<yourAccessKeySecret>";
        static string bucketName = "<yourBucketName>";
        static string objectName = "<yourObjectName>";
        static string localFilename = "<yourLocalFilename>";

        static AutoResetEvent _event = new AutoResetEvent(false);

        // 创建OssClient实例。
        static OssClient client = new OssClient(endpoint, accessKeyId, accessKeySecret);

        private static void PutObjectCallback(IAsyncResult ar)
        {
            try
            {
                client.EndPutObject(ar);
                Console.WriteLine(ar.AsyncState as string);
                Console.WriteLine("Put object succeeded");
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            finally
            {
                _event.Set();
            }
        }

        public static void AsyncPutObject()
        {
            try
            {
                using (var fs = File.Open(localFilename, FileMode.Open))
                {
                    var metadata = new ObjectMetadata();
					// 增加自定义元信息。
                    metadata.UserMetadata.Add("mykey1", "myval1");
                    metadata.UserMetadata.Add("mykey2", "myval2");
                    metadata.CacheControl = "No-Cache";
                    metadata.ContentType = "text/html";
                    string result = "Notice user: put object finish";

                    // 异步上传。
                    client.BeginPutObject(bucketName, objectName, fs, metadata, PutObjectCallback, result.ToCharArray());

                    _event.WaitOne();
                }
            }
            catch (OssException ex)
            {
                Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
                    ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
            }
            catch (Exception ex)
            {
                Console.WriteLine("Failed with error info: {0}", ex.Message);
            }
        }

        static void Main(string[] args)
        {
            Program.AsyncPutObject();
        }
    }
}