在后端C#中 call web api

我们要想使用web api, 需要首先在azure 中创建application. (如何创建application可以参考我的另一篇blog 从O365中获取users到D365中 )

Get

我们可以用JObject 和 JArray 来快速获取而不需要DeserializeObject

 　　　　　　　　//server-side online oauth2

                var sessionResult = (Opportunity)Session["OpportunityData"];

                var httpUrl = resourceUrl + "api/data/v9.1/accounts?$filter=accountid%20eq%20" + "hello world";

                AuthenticationContext authContext = new AuthenticationContext("https://login.windows.net/common", false);

                AuthenticationResult result = authContext.AcquireToken(resourceUrl, clientId, new UserCredential(account, password));

                using (HttpClient httpClient = new HttpClient())

                {

                    ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

                    httpClient.Timeout = new TimeSpan(, , );  // 2 minutes

                    httpClient.DefaultRequestHeaders.Authorization =

                    new AuthenticationHeaderValue("Bearer", result.AccessToken);

                    httpClient.DefaultRequestHeaders.Add("OData-MaxVersion", "4.0");

                    httpClient.DefaultRequestHeaders.Add("OData-Version", "4.0");

                    HttpResponseMessage response = httpClient.GetAsync(httpUrl).Result;

                    var returnvalue = response.Content.ReadAsStringAsync().Result;

                    LogHelper.WriteLog("Return value:");

                    LogHelper.WriteLog(returnvalue);

                    JObject jo = JsonConvert.DeserializeObject<JObject>(returnvalue);

                    JArray ja = JsonConvert.DeserializeObject<JArray>(jo["value"].ToString());
　　　　　　　　　　}

POST:

ServicePointManager.SecurityProtocol 是必须要添加的. 不然会抛出 security 的exception.

req.Headers.Add("If-Match", "*"); 如果我们在请求的表头里添加了 if-match的话, 如果有相同的record创建时,会抛出 exception 412 error 而不会去创建一条一模一样的数据.

                var weburi = resourceUrl + "api/data/v9.1/accounts";

                AuthenticationContext authContext = new AuthenticationContext("https://login.windows.net/common", false);

                AuthenticationResult result = authContext.AcquireToken(resourceUrl, clientId, new UserCredential(account, password));

                HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(weburi);

                req.Method = "post";

                req.Accept = "application/json";

                req.ContentType = "application/json; charset=utf-8";

                req.Headers.Add("OData-MaxVersion", "4.0");

                req.Headers.Add("OData-Version", "4.0");
                req.Headers.Add("If-Match","*");

                req.Headers.Set("Authorization", "Bearer " + result.AccessToken);

                ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;

                var newSurveyResult = new JObject();

                newSurveyResult.Add("booleanvalue", true);

                newSurveyResult.Add("stringvalue", "Hello World!");byte[] data = Encoding.UTF8.GetBytes(newSurveyResult.ToString());

                Stream newStream = req.GetRequestStream();

                newStream.Write(data, , data.Length);

                newStream.Close();

                using (HttpWebResponse res = (HttpWebResponse)req.GetResponse())

                {

                    //StreamReader read = new StreamReader(res.GetResponseStream());

                    string head = res.Headers.ToString();

                }

PATCH:

                var weburi = resourceUrl + "api/data/v9.1/accounts?$filter=accountid eq " + id;

                AuthenticationContext authContext = new AuthenticationContext("https://login.windows.net/common", false);

                AuthenticationResult result = authContext.AcquireToken(resourceUrl, clientId, new UserCredential(account, password));

                HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(weburi);

                req.Method = "PATCH";

                req.Accept = "application/json";

                req.ContentType = "application/json; charset=utf-8";

                req.Headers.Add("OData-MaxVersion", "4.0");

                req.Headers.Add("OData-Version", "4.0");

                req.Headers.Set("Authorization", "Bearer " + result.AccessToken);

                ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;

                var newSurveyResult = new JObject

                        {

                            {"stringvalue", "Hello World"},

                            {"intvalue", 123 },

                            { "booleanvalue" , true}

                        };

                byte[] data = Encoding.UTF8.GetBytes(newSurveyResult.ToString());

                Stream newStream = req.GetRequestStream();

                newStream.Write(data, , data.Length);

                newStream.Close();

                using (HttpWebResponse res = (HttpWebResponse)req.GetResponse())

                {

                    StreamReader read = new StreamReader(res.GetResponseStream());

                }

巴特西

在后端C#中 call web api

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