c#调用腾讯云API的实例 c#调用腾讯云API的实例

 

 1 //获取时间戳 .net framework
 2             /*
 3             DateTime dt = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1)); 
 4             int time = (int)(DateTime.Now - dt).TotalSeconds;
 5             String Timestamp = time.ToString();
 6             */
 7             // .net core 获取时间戳
 8             DateTime dt = new DateTime(1970, 1, 1,0, 0, 0, DateTimeKind.Utc);
 9             int time = (int)(DateTime.Now.AddHours(-8) - dt).TotalSeconds;
10             String Timestamp = time.ToString();
11             //随机正整数,用于防止重放攻击
12             Random rd = new Random();
13             int rd_i = rd.Next();
14             String nonce = Convert.ToString(rd_i);
15             //SecretId
16             String SecretId = "";
17             //参数(用于编码)
18             String PostStr = string.Format("Action=DescribeLVBChannelList&Nonce={0}&Region=bj&SecretId={1}&Timestamp={2}", nonce, SecretId, Timestamp);
19             //地址
20             String url = "https://live.api.qcloud.com/v2/index.php";
21             //编码
22             UTF8Encoding enc = new UTF8Encoding();
23             String qm = "POSTlive.api.qcloud.com/v2/index.php"  + "?" + PostStr;
24             byte[] dataToHash = enc.GetBytes(qm);
25             /*
26             var sha1 = SHA1.Create();
27             var result = sha1.ComputeHash(dataToHash);
28             */  
29             HMACSHA1 hmac = new HMACSHA1()
30             {
31                 Key = enc.GetBytes("")//SecretKey
32             };
33             var result = hmac.ComputeHash(dataToHash);
34             string Signature = Convert.ToBase64String(result);
35             //完整参数
36             var completeUrl = string.Format("Action=DescribeLVBChannelList&Nonce={0}&Region=bj&SecretId={1}&Signature={2}&Timestamp={3}", nonce, SecretId, Signature, Timestamp);
37 
38             HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
39             request.Method = "POST";
40             request.ContentType = "application/x-www-form-urlencoded";
41             request.ProtocolVersion = HttpVersion.Version10;
42             byte[] data = Encoding.UTF8.GetBytes(completeUrl);
43             request.ContentLength = data.Length;
44             Stream newStream = request.GetRequestStream();
45             newStream.Write(data, 0, data.Length);
46             newStream.Close();
47             HttpWebResponse response = null;
48             int httpStatus = 200;
49             string content;
50             try
51             {
52                 response = (HttpWebResponse)request.GetResponse();
53                 httpStatus = (int)response.StatusCode;
54                 StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
55                 content = reader.ReadToEnd();
56             }
57             catch (WebException e)
58             {
59                 response = (HttpWebResponse)e.Response;
60                 httpStatus = (int)response.StatusCode;
61                 using (Stream errData = response.GetResponseStream())
62                 {
63                     using (StreamReader reader = new StreamReader(errData))
64                     {
65                         content = reader.ReadToEnd();
66                     }
67                 }
68             }