c# .net http Post请求 发送Json数据,经过微信签名测试有效c# .net 模拟请求 POST, Get,Put,Delete,并带Headers

调用代码

//引入：using System.Collections;

Hashtable headht = new Hashtable();
headht.Add("Authorization", "内容");
HttpHelpMethods.PostJson(url, postData, headht);

核心代码

#region POST-JSON  
        /// <summary>
        /// http Post请求 发送Json数据
        /// </summary>
        /// <param name="url"></param>
        /// <param name="postData"></param>
        /// <param name="headht"></param>
        /// <returns></returns>
        public static string PostJson(string url, string postData, Hashtable headht = null)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = "POST";
            request.ContentType = "application/json;charset=UTF-8";
            request.UserAgent = "www.qq.cc/WebRequest";
            request.Accept = "application/json";

            #region headers设置
            if (headht != null)
            {
                foreach (DictionaryEntry item in headht)
                {
                    request.Headers.Add(item.Key.ToString(), item.Value.ToString());
                }
            }
            #endregion

            byte[] paramJsonBytes;
            paramJsonBytes = System.Text.Encoding.UTF8.GetBytes(postData);
            request.ContentLength = paramJsonBytes.Length;
            Stream writer;
            try
            {
                writer = request.GetRequestStream();
            }
            catch (Exception e)
            {
                writer = null;
                Console.Write("连接服务器失败!");
            }
            writer.Write(paramJsonBytes, 0, paramJsonBytes.Length);
            writer.Close();
            HttpWebResponse response;
            try
            {
                response = (HttpWebResponse)request.GetResponse();
            }
            catch (WebException ex)
            {
                response = ex.Response as HttpWebResponse;
            }
            Stream resStream = response.GetResponseStream();
            StreamReader reader = new StreamReader(resStream);
            string text = reader.ReadToEnd();
            return text;
        }
        #endregion