.NET處理HTTP請求

第一種：使用HttpWebRequest

string result = "";
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(httpUrl);
            request.Method = "POST";
            request.ContentType = "application/json";
            string data = "{\n\"header\": {\n\"token\": \"30xxx6aaxxx93ac8cxx8668xx39xxxx\",\n\"username\": \"jdads\",\n\"password\": \"liuqiangdong2010\",\n\"action\": \"\"\n},\n\"body\": {}\n}";
            data = jsonData;
            byte[] byteData = Encoding.UTF8.GetBytes(data.ToString());
            request.ContentLength = byteData.Length;

            using (Stream postStream = request.GetRequestStream())
            {
                postStream.Write(byteData, 0, byteData.Length);
            }
            try
            {
                using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
                {
                    StreamReader reader = new StreamReader(response.GetResponseStream());
                    result = reader.ReadToEnd();
                    Console.WriteLine(result);

                }
            }
            

 

第二種：WebClient，也過時了：
第三種：HttpClient 當前主流用法，異步請求，自.NET4.5開始可從Nuget包管理中獲取。

 static async Task<Product> GetProductAsync(string path)
        {
            Product product = null;
            HttpResponseMessage response = await client.GetAsync(path);
            if (response.IsSuccessStatusCode)
            {
                product = await response.Content.ReadAsAsync<Product>();
            }
            return product;
        }

 

第四種：第三方類庫：

RestSharp

REST API請求測試類庫，可通過 NuGet 獲得。

Flurl.Http

最新的便捷的api測試工具，使用HttpClient實現，可通過 NuGet 安裝。

 

參考

Call a Web API From a .NET Client (C#)