一個簡單的Httpserver以及獲取post提交的參數

以下代碼是我從網上找來的，但是一直獲取不到post提交的參數，最后經過我的修改，終於可以得到post提交的數據。因為本人在網上找了很久都沒有找到相關的資料，特意發出來希望能幫到大家，有什么不足的地方還請大神們指正，小弟不勝感激。

Httpserver代碼

        public void StartListen()
        {
            using (HttpListener listerner = new HttpListener())
            {
                listerner.AuthenticationSchemes = AuthenticationSchemes.Anonymous;//指定身份驗證 Anonymous匿名訪問
                listerner.Prefixes.Add("http://localhost:8080/web/");

                // listerner.Prefixes.Add("http://localhost/web/");
                listerner.Start();
                Console.WriteLine("WebServer Start Successed.......");
                while (true)
                {
                    //等待請求連接
                    //沒有請求則GetContext處於阻塞狀態
                    HttpListenerContext ctx = listerner.GetContext();
                    ctx.Response.StatusCode = 200;//設置返回給客服端http狀態代碼
                    //RequestType=1&Longitude=0.0&Latitude=0.0&RequestSource=xx
                    string RequestType = "";
                    string Longitude = "";
                    string Latitude = "";
                    string RequestSource = "";
                    //獲取客戶端寫入的信息
                    string strRequest = ShowRequestData(ctx.Request);
                    if (!string.IsNullOrEmpty(strRequest))
                    {
                        string[] strR = strRequest.Split('&');
                        string[] strP = new string[strR.Length];
                        for (int i = 0; i < strR.Length; i++)
                        {
                            strP[i] = strR[i].Split('=')[1];
                        }
                        RequestType = strP[0];
                        Longitude = strP[1];
                        Latitude = strP[2];
                        RequestSource = strP[3];
                    }
                    string strSend = "";

                    if (!string.IsNullOrEmpty(RequestType))
                    {
                        if (RequestType == "1" && !string.IsNullOrEmpty(Longitude) && !string.IsNullOrEmpty(Latitude))
                        {
                            strSend = GetPointWeather(Longitude, Latitude, RequestSource);
                        }
                        if (RequestType == "2")
                        { 
                            
                        }
                    }

                    //使用Writer輸出http響應代碼
                    using (StreamWriter writer = new StreamWriter(ctx.Response.OutputStream, Encoding.GetEncoding("gb2312")))
                    {
                        writer.WriteLine(strSend);
                        writer.Close();
                        ctx.Response.Close();
                    }

                }
                //listerner.Stop();
            }
        }

GetPointWeather函數是我自己定義的，主要是得到返回給客戶端的信息。

獲取客戶端的輸入流

        public string ShowRequestData(HttpListenerRequest request)
        {
            if (!request.HasEntityBody)
            {
                Console.WriteLine("No client data was sent with the request.");
                return "";
            }
            System.IO.Stream body = request.InputStream;
            System.Text.Encoding encoding = request.ContentEncoding;
            System.IO.StreamReader reader = new System.IO.StreamReader(body, encoding);
            if (request.ContentType != null)
            {
                Console.WriteLine("Client data content type {0}", request.ContentType);
            }
            Console.WriteLine("Client data content length {0}", request.ContentLength64);

            Console.WriteLine("Start of client data:");
            // Convert the data to a string and display it on the console.
            string s = reader.ReadToEnd();
            Console.WriteLine(s);
            Console.WriteLine("End of client data:");
            body.Close();
            reader.Close();
            // If you are finished with the request, it should be closed also.
            return s;
        }

 

post請求代碼：

        /// <summary>
        /// 使用Http請求天氣信息
        /// </summary>
        /// <param name="RequestType">請求類別（1：點預報 2：鎮預報）</param>
        /// <param name="Longitude">經度（如果是鎮預報請求 值為空）</param>
        /// <param name="Latitude">緯度（如果是鎮預報請求 值為空）</param>
        /// <param name="RequestSource">請求來源</param>
        public void GetWeatherByHttp(string RequestType, string Longitude, string Latitude, string RequestSource)
        {
            string strURL = "http://localhost:8080/web/";
            System.Net.HttpWebRequest request;
            request = (System.Net.HttpWebRequest)WebRequest.Create(strURL);
            //Post請求方式  
            request.Method = "POST";
            //內容類型  
            request.ContentType = "application/x-www-form-urlencoded";
            //參數經過URL編碼  
            Encoding myEncoding = Encoding.GetEncoding("gb2312");//GetEncoding("gb2312")
            string paraUrlCoded = HttpUtility.UrlEncode("RequestType", myEncoding);
            paraUrlCoded += "=" + HttpUtility.UrlEncode(RequestType, myEncoding);
            paraUrlCoded += "&" + HttpUtility.UrlEncode("Longitude", myEncoding);
            paraUrlCoded += "=" + HttpUtility.UrlEncode(Longitude, myEncoding);
            paraUrlCoded += "&" + HttpUtility.UrlEncode("Latitude", myEncoding);
            paraUrlCoded += "=" + HttpUtility.UrlEncode(Latitude, myEncoding);
            paraUrlCoded += "&" + HttpUtility.UrlEncode("RequestSource", myEncoding);
            paraUrlCoded += "=" + HttpUtility.UrlEncode(RequestSource, myEncoding);
            byte[] payload;
            //將URL編碼后的字符串轉化為字節  
            payload = System.Text.Encoding.ASCII.GetBytes(paraUrlCoded);
            //設置請求的ContentLength   
            request.ContentLength = payload.Length;
            //獲得請求流  
            Stream writer = request.GetRequestStream();
            //將請求參數寫入流  
            writer.Write(payload, 0, payload.Length);
            //關閉請求流  
            writer.Close();
            System.Net.HttpWebResponse response;
            //獲得響應流  
            response = (System.Net.HttpWebResponse)request.GetResponse();
            System.IO.Stream s;
            s = response.GetResponseStream();
            string StrDate = "";
            string strValue = "";
            StreamReader Reader = new StreamReader(s, Encoding.Default);
            while ((StrDate = Reader.ReadLine()) != null)
            {
                strValue += StrDate + "\r\n";
            }
            // txtInfo.Text = strValue;  
            Reader.Close();
        }