c# 发送http请求

以你之姓@ 2022-05-20 02:44 295阅读 0赞

/// 发送请求  
            /// </summary>  
            /// <param name="url">请求地址</param>  
            /// <param name="sendData">参数格式 “name=王武&pass=123456”</param>  
            /// <returns></returns>  
            public static string RequestWebAPI(string url, string sendData)  
            {  
                string backMsg = "";  
                try  
                {  
                    System.Net.WebRequest httpRquest = System.Net.HttpWebRequest.Create(url);  
                    httpRquest.Method = "POST";  
                    //这行代码很关键，不设置ContentType将导致后台参数获取不到值  
                    httpRquest.ContentType = "application/x-www-form-urlencoded;charset=UTF-8";  
                    byte[] dataArray = System.Text.Encoding.UTF8.GetBytes(sendData);  
                    //httpRquest.ContentLength = dataArray.Length;  
                    System.IO.Stream requestStream = null;  
                    if (string.IsNullOrWhiteSpace(sendData) == false)  
                    {  
                        requestStream = httpRquest.GetRequestStream();  
                        requestStream.Write(dataArray, 0, dataArray.Length);  
                        requestStream.Close();  
                    }  
                    System.Net.WebResponse response = httpRquest.GetResponse();  
                    System.IO.Stream responseStream = response.GetResponseStream();  
                    System.IO.StreamReader reader = new System.IO.StreamReader(responseStream, System.Text.Encoding.UTF8);  
                    backMsg = reader.ReadToEnd();  
      
      
                    reader.Close();  
                    reader.Dispose();  
      
      
                    requestStream.Dispose();  
                    responseStream.Close();  
                    responseStream.Dispose();  
                }  
                catch (Exception)  
                {  
                    throw;  
                }  
                return backMsg;  
            }