C# 調用接口實例httpclient（postman）

調用主體

Get請求

var httpClient = new HttpClient();            
            var getTokenUrl = new Uri("接口網絡地址");
            var response = httpClient.GetAsync(getTokenUrl).Result;
            var data = response.Content.ReadAsStringAsync().Result;//接口調用成功獲取的數據
            JObject jsonInfo = (JObject)JsonConvert.DeserializeObject(data);
            string code = Convert.ToString(jsonInfo["errcode"]);

 

Post請求 

此處例舉的是傳headers，如果不需要注釋掉

#region 調用接口（postman）

            
            string Url = "http://?.?.?.?:9900/weather";//請求的url地址
            //string ContentTypeS = "application/x-www-form-urlencoded"; //格式類型（x-www-form-urlencoded格式傳參）
            string ContentTypeS = "application/json"; //格式類型（json格式傳參）

            //string PostData = "mode=" + "insert" + "&data=" + json;    //傳送的數據（x-www-form-urlencoded傳參）
            sendCS sendcs = new sendCS();
            sendcs.mode = "insert";
            sendcs.data = "12345";
            string jkid = "12345";
            //轉json
            string PostData = JsonConvert.SerializeObject(sendcs);    //傳送的數據（json傳參）
            RestApiClient DXApiManager = new RestApiClient(Url, HttpVerbNew.POST, ContentTypeS, PostData, jkid);
            string returnInfo = DXApiManager.MakeRequest();
            //轉為json對象(添加Newtonsoft.Json.dll引用)
            JObject jsonInfo = (JObject)JsonConvert.DeserializeObject(returnInfo);
            string code = Convert.ToString(jsonInfo["code"]);//輸出  結果
            string msg = Convert.ToString(jsonInfo["msg"]);//輸出  結果

            //再根據code返回值去判斷成功或失敗，返回結果

            #endregion

相關類

public class RestApiClient
        {
            public string EndPoint { get; set; }    //請求的url地址  
            public HttpVerbNew Method { get; set; }    //請求的方法
            public string ContentType { get; set; } //格式類型
            public string PostData { get; set; }    //傳送的數據
            public string JKID { get; set; }    //headers 參數


            public RestApiClient()
            {
                EndPoint = "";
                Method = HttpVerbNew.GET;
                ContentType = "text/xml";
                PostData = "";
            }
            public RestApiClient(string endpoint, string contentType)
            {
                EndPoint = endpoint;
                Method = HttpVerbNew.GET;
                ContentType = contentType;
                PostData = "";
            }
            public RestApiClient(string endpoint, HttpVerbNew method, string contentType)
            {
                EndPoint = endpoint;
                Method = method;
                ContentType = contentType;
                PostData = "";
            }


            public RestApiClient(string endpoint, HttpVerbNew method, string contentType, string postData,string jkid)
            {
                EndPoint = endpoint;
                Method = method;
                ContentType = contentType;
                PostData = postData;
                JKID = jkid;
            }


            // 添加https
            private static readonly string DefaultUserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";


            private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
            {
                if (errors == SslPolicyErrors.None)
                    return true;
                return false;
            }
            // end添加https


            public string MakeRequest()
            {
                return MakeRequest("");
            }


            public string MakeRequest(string parameters)
            {
                // 添加https
                if (EndPoint.Substring(0, 8) == "https://")
                {
                    ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
                    ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;
                }
                var request = (HttpWebRequest)HttpWebRequest.Create(EndPoint + parameters);
                if (EndPoint.Substring(0, 8) == "https://")
                {
                    //string clientp12path = AppDomain.CurrentDomain.BaseDirectory + "\\Certificate\\outgoing.CertwithKey.pkcs12";
                    //string clientp12PassWord = "IoM@1234";
                    //string clientp12path2 = AppDomain.CurrentDomain.BaseDirectory + "\\Certificate\\server.pem";
                    //string clientp12PassWord2 = "1qaz2wsx";
                    //X509Store certStore = new X509Store(StoreName.My, StoreLocation.LocalMachine);
                    //certStore.Open(OpenFlags.ReadOnly);
                    //X509Certificate2 cer = new X509Certificate2(clientp12path, clientp12PassWord);
                    //X509Certificate2 cer2 = new X509Certificate2(clientp12path2, clientp12PassWord2);
                    //request.ClientCertificates.Add(cer);
                    //request.ClientCertificates.Add(cer2);
                    ServicePointManager.ServerCertificateValidationCallback += (object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) =>
                    {
                        return true;
                    };
                    request.UserAgent = DefaultUserAgent;
                }
                // end添加https
                request.Method = Method.ToString();
                request.ContentLength = 0;
                request.ContentType = ContentType;
                request.ProtocolVersion = HttpVersion.Version10;
                request.Headers.Add("alpha_auth_token", "asdf12345");
                request.Headers.Add("alpha_auth_jkid", JKID);


                if (!string.IsNullOrEmpty(PostData) && Method == HttpVerbNew.POST)//如果傳送的數據不為空，並且方法是post
                {
                    var encoding = new UTF8Encoding();
                    var bytes = Encoding.UTF8.GetBytes(PostData);//編碼方式按自己需求進行更改，我在項目中使用的是UTF-8
                    request.ContentLength = bytes.Length;
                    using (var writeStream = request.GetRequestStream())
                    {
                        writeStream.Write(bytes, 0, bytes.Length);
                    }
                }
                else if (!string.IsNullOrEmpty(PostData) && Method == HttpVerbNew.PUT)//如果傳送的數據不為空，並且方法是put
                {
                    var encoding = new UTF8Encoding();
                    var bytes = Encoding.UTF8.GetBytes(PostData);//編碼方式按自己需求進行更改，我在項目中使用的是UTF-8
                    request.ContentLength = bytes.Length;
                    using (var writeStream = request.GetRequestStream())
                    {
                        writeStream.Write(bytes, 0, bytes.Length);
                    }
                }
                using (var response = (HttpWebResponse)request.GetResponse())
                {
                    var responseValue = string.Empty;
                    if (response.StatusCode != HttpStatusCode.OK && response.StatusCode != HttpStatusCode.NoContent && response.StatusCode != HttpStatusCode.Created)
                    {
                        var message = response.StatusCode.ToString();
                        throw new ApplicationException(message);
                    }
                    // grab the response
                    using (var responseStream = response.GetResponseStream())
                    {
                        if (responseStream != null)
                            using (var reader = new StreamReader(responseStream))
                            {
                                responseValue = reader.ReadToEnd();
                            }
                    }
                    return responseValue;
                }
            }


        }
        public enum HttpVerbNew
        {
            GET,            //method  常用的就這幾樣，可以添加其他的   get：獲取    post：修改    put：寫入    delete：刪除
            POST,
            PUT,
            DELETE
        }

 

 

 

httpclient萬能寫法

現在postman越來越便利，當我們用postman調通接口后，可直接一鍵成生code（postman版本不同位置不同）

舉例：

 

 

 

 

點擊后可一鍵生成代碼   扔進項目里就可運行 前提！！！需要添加一個NuGet包 --- RestSharp