阿里云oss c# api 的使用 的使用

API 文档下载地址：http://docs-aliyun.cn-hangzhou.oss.aliyun-inc.com/assets/attach/32085/cn_zh/1515493045734/aliyun_oss_dotnet_sdk_2_8_0.zip?spm=a2c4g.11186623.2.8.koEoR1&file=aliyun_oss_dotnet_sdk_2_8_0.zip

oss 的鉴权

using System;
using Aliyun.OSS;

/// <summary>
/// alyun_oss 的摘要说明
/// </summary>
public class alyun_oss
{

    public static string accessKeyId = "#";
    public static string accessKeySecret = "#";
    public static string endpoint = "oss-cn-beijing.aliyuncs.com";
    public static OssClient client = new OssClient(endpoint, accessKeyId, accessKeySecret);

　　

/// <summary>
/// 获取get 链接
/// </summary>
/// <param name="bucketName">储存空间名称</param>
/// <param name="key">文件名</param>
/// <returns></returns>

public static string GetSignedUrl(string bucketName, string key)
    {
        string restr = "";
        try
        {
            OssClient client = new OssClient(endpoint, accessKeyId, accessKeySecret);
            var request = new GeneratePresignedUriRequest(bucketName, key, SignHttpMethod.Get);//方式
            request.Expiration = DateTime.Now.AddMinutes();//有限时间
            var signedUrl = client.GeneratePresignedUri(request);
            restr = signedUrl.ToString();
        }
        catch (Exception ex)
        {

        }
        return restr;
    }

}