C#封装v5 COS API实践-put方法

接get方法后，提供V5 COS API封装put方法，用于文件的上传操作。
//1.参数定义
string SecretId = "这里输入您的SecretId";//SecretId替换成自己的
string SecretKey = "这里输入您的SecretKey";//SecretKey替换成自己的

string q_sign_algorithm = "sha1";
string q_ak = SecretId;
string q_sign_time = GetTimeStamp(DateTime.UtcNow) + ";" + GetTimeStamp(DateTime.UtcNow.AddHours(1));//签名有效期1个小时
string q_key_time = GetTimeStamp(DateTime.UtcNow) + ";" + GetTimeStamp(DateTime.UtcNow.AddHours(1));//签名有效期1个小时;
string q_header_list = "";
string q_url_param_list = "";
string q_signature = "";

string key = "/1.jpg";//上传的object名称为1.jpg
string method = "put";

//2.签名计算
string SignKey = ComputeHash(Encoding.ASCII.GetBytes(SecretKey), q_key_time);//对签名的有效起止时间加密计算值SignKey
string HttpString = method+"\n" + key + "\n\n\n";//根据固定格式组合生成
string StringToSign = q_sign_algorithm+"\n"+ q_sign_time + "\n"+ GetSH1(HttpString) + "\n";//加密 HttpString，并根据固定格式组合生成 StringToSign
string Signature = ComputeHash(Encoding.ASCII.GetBytes(SignKey), StringToSign);//加密 StringToSign，生成 Signature

string url = "http://{bucket}-{appid}.cos.ap-beijing.myqcloud.com" + key + "?q-sign-algorithm=" + q_sign_algorithm + "&q-ak=" + q_ak + "&q-sign-time=" + q_sign_time + "&q-key-time=" + q_key_time + "&q-header-list=&q-url-param-list=&q-signature=" + Signature;//把{bucket}  {appid} 都替换成自己的
string data = "123456";

//3.上传对象
try
{
    Put(url, data);
    Response.Write("put上传完成");
}
catch (Exception ex)
{
    Response.Write("put上传失败:" + ex.Message);
}
//4.工具方法
/// <summary>
/// 获取时间戳
/// </summary>
/// <returns></returns>
public static string GetTimeStamp(DateTime dt)
{
    TimeSpan ts = dt - new DateTime(1970, 1, 1, 0, 0, 0, 0);
    return Convert.ToInt64(ts.TotalSeconds).ToString();
}
/// <summary>
/// 计算哈希
/// </summary>
/// <param name="key"></param>
/// <param name="input"></param>
/// <returns></returns>
public static string ComputeHash(byte[] key, string input)
{
    HMACSHA1 myhmacsha1 = new HMACSHA1(key);
    byte[] byteArray = System.Text.Encoding.ASCII.GetBytes(input);
    MemoryStream stream = new MemoryStream(byteArray);
    return myhmacsha1.ComputeHash(stream).Aggregate("", (s, e) => s + String.Format("{0:x2}", e), s => s);
}
/// <summary>
/// SHA1
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static string GetSH1(string value)
{
    SHA1 algorithm = SHA1.Create();
    byte[] data = algorithm.ComputeHash(Encoding.UTF8.GetBytes(value));
    string sh1 = "";
    for (int i = 0; i < data.Length; i++)
    {
        sh1 += data[i].ToString("x2").ToLower();
    }
    return sh1;
}

#region Put方式
private static string Put(string url, string data)
{
    return CommonHttpRequest(url, "PUT", data);
}
#endregion
#region  私有方法
private static string CommonHttpRequest(string url, string type, string data = "")
{
    HttpWebRequest myRequest = null;
    Stream outstream = null;
    HttpWebResponse myResponse = null;
    StreamReader reader = null;
    try
    {
        //构造http请求的对象
        myRequest = (HttpWebRequest)WebRequest.Create(url);


        //设置
        myRequest.ProtocolVersion = HttpVersion.Version10;
        myRequest.Method = type;

        if (data.Trim() != "")
        {
            myRequest.ContentType = "text/xml";
            myRequest.ContentLength = data.Length;

            //转成网络流
            byte[] buf = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(data);

            outstream = myRequest.GetRequestStream();
            outstream.Flush();
            outstream.Write(buf, 0, buf.Length);
            outstream.Flush();
            outstream.Close();
        }
        // 获得接口返回值
        myResponse = (HttpWebResponse)myRequest.GetResponse();
        reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
        string ReturnXml = reader.ReadToEnd();
        reader.Close();
        myResponse.Close();
        myRequest.Abort();
        return ReturnXml;
    }
    catch (Exception ex)
    {
        // throw new Exception();
        if (outstream != null) outstream.Close();
        if (reader != null) reader.Close();
        if (myResponse != null) myResponse.Close();
        if (myRequest != null) myRequest.Abort();
        return ex.Message;
    }
}
#endregion
抓包看下，上传成功。