一个简单的Httpserver以及获取post提交的参数

ゝ一纸荒年。 2022-07-16 01:21 182阅读 0赞

# 一个简单的Httpserver以及获取post提交的参数 #

时间 2014-12-08 11:31:00  [博客园-原创精华区 ][-_]

*原文*  [ http://www.cnblogs.com/qiaomanan/p/4150673.html][http_www.cnblogs.com_qiaomanan_p_4150673.html]

主题 [ .Net ][.Net]

以下代码是我从网上找来的，但是一直获取不到post提交的参数，最后经过我的修改，终于可以得到post提交的数据。因为本人在网上找了很久都没有找到相关的资料，特意发出来希望能帮到大家，有什么不足的地方还请大神们指正，小弟不胜感激。

Httpserver代码

1         public void StartListen() 2 { 3             using (HttpListener listerner = new HttpListener()) 4 { 5                 listerner.AuthenticationSchemes = AuthenticationSchemes.Anonymous;//指定身份验证 Anonymous匿名访问
     6                 listerner.Prefixes.Add("http://localhost:8080/web/"); 7 
     8                 // listerner.Prefixes.Add("http://localhost/web/");
     9 listerner.Start(); 10                 Console.WriteLine("WebServer Start Successed......."); 11                 while (true) 12 { 13                     //等待请求连接 14                     //没有请求则GetContext处于阻塞状态
    15                     HttpListenerContext ctx = listerner.GetContext(); 16                     ctx.Response.StatusCode = 200;//设置返回给客服端http状态代码 17                     //RequestType=1&Longitude=0.0&Latitude=0.0&RequestSource=xx
    18                     string RequestType = ""; 19                     string Longitude = ""; 20                     string Latitude = ""; 21                     string RequestSource = ""; 22                     //获取客户端写入的信息
    23                     string strRequest = ShowRequestData(ctx.Request); 24                     if (!string.IsNullOrEmpty(strRequest)) 25 { 26                         string[] strR = strRequest.Split('&'); 27                         string[] strP = new string[strR.Length]; 28                         for (int i = 0; i < strR.Length; i++) 29 { 30                             strP[i] = strR[i].Split('=')[1]; 31 } 32                         RequestType = strP[0]; 33                         Longitude = strP[1]; 34                         Latitude = strP[2]; 35                         RequestSource = strP[3]; 36 } 37                     string strSend = ""; 38 
    39                     if (!string.IsNullOrEmpty(RequestType)) 40 { 41                         if (RequestType == "1" && !string.IsNullOrEmpty(Longitude) && !string.IsNullOrEmpty(Latitude)) 42 { 43                             strSend = GetPointWeather(Longitude, Latitude, RequestSource); 44 } 45                         if (RequestType == "2") 46 { 47                             
    48 } 49 } 50 
    51                     //使用Writer输出http响应代码
    52                     using (StreamWriter writer = new StreamWriter(ctx.Response.OutputStream, Encoding.GetEncoding("gb2312"))) 53 { 54 writer.WriteLine(strSend); 55 writer.Close(); 56 ctx.Response.Close(); 57 } 58 
    59 } 60                 //listerner.Stop();
    61 } 62         }

GetPointWeather函数是我自己定义的，主要是得到返回给客户端的信息。

获取客户端的输入流

1         public string ShowRequestData(HttpListenerRequest request)
     2         {
     3             if (!request.HasEntityBody)
     4             {
     5                 Console.WriteLine("No client data was sent with the request.");
     6                 return "";
     7             }
     8             System.IO.Stream body = request.InputStream;
     9             System.Text.Encoding encoding = request.ContentEncoding;
    10             System.IO.StreamReader reader = new System.IO.StreamReader(body, encoding);
    11             if (request.ContentType != null)
    12             {
    13                 Console.WriteLine("Client data content type {0}", request.ContentType);
    14             }
    15             Console.WriteLine("Client data content length {0}", request.ContentLength64);
    16 
    17             Console.WriteLine("Start of client data:");
    18             // Convert the data to a string and display it on the console.
    19             string s = reader.ReadToEnd();
    20             Console.WriteLine(s);
    21             Console.WriteLine("End of client data:");
    22             body.Close();
    23             reader.Close();
    24             // If you are finished with the request, it should be closed also.
    25             return s;
    26         }

post请求代码：

1         /// <summary>
     2         /// 使用Http请求天气信息
     3         /// </summary>
     4         /// <param name="RequestType">请求类别（1：点预报 2：镇预报）</param>
     5         /// <param name="Longitude">经度（如果是镇预报请求 值为空）</param>
     6         /// <param name="Latitude">纬度（如果是镇预报请求 值为空）</param>
     7         /// <param name="RequestSource">请求来源</param>
     8         public void GetWeatherByHttp(string RequestType, string Longitude, string Latitude, string RequestSource)
     9         {
    10             string strURL = "http://localhost:8080/web/";
    11             System.Net.HttpWebRequest request;
    12             request = (System.Net.HttpWebRequest)WebRequest.Create(strURL);
    13             //Post请求方式 
    14             request.Method = "POST";
    15             //内容类型 
    16             request.ContentType = "application/x-www-form-urlencoded";
    17             //参数经过URL编码 
    18             Encoding myEncoding = Encoding.GetEncoding("gb2312");//GetEncoding("gb2312")
    19             string paraUrlCoded = HttpUtility.UrlEncode("RequestType", myEncoding);
    20             paraUrlCoded += "=" + HttpUtility.UrlEncode(RequestType, myEncoding);
    21             paraUrlCoded += "&" + HttpUtility.UrlEncode("Longitude", myEncoding);
    22             paraUrlCoded += "=" + HttpUtility.UrlEncode(Longitude, myEncoding);
    23             paraUrlCoded += "&" + HttpUtility.UrlEncode("Latitude", myEncoding);
    24             paraUrlCoded += "=" + HttpUtility.UrlEncode(Latitude, myEncoding);
    25             paraUrlCoded += "&" + HttpUtility.UrlEncode("RequestSource", myEncoding);
    26             paraUrlCoded += "=" + HttpUtility.UrlEncode(RequestSource, myEncoding);
    27             byte[] payload;
    28             //将URL编码后的字符串转化为字节 
    29             payload = System.Text.Encoding.ASCII.GetBytes(paraUrlCoded);
    30             //设置请求的ContentLength 
    31             request.ContentLength = payload.Length;
    32             //获得请求流 
    33             Stream writer = request.GetRequestStream();
    34             //将请求参数写入流 
    35             writer.Write(payload, 0, payload.Length);
    36             //关闭请求流 
    37             writer.Close();
    38             System.Net.HttpWebResponse response;
    39             //获得响应流 
    40             response = (System.Net.HttpWebResponse)request.GetResponse();
    41             System.IO.Stream s;
    42             s = response.GetResponseStream();
    43             string StrDate = "";
    44             string strValue = "";
    45             StreamReader Reader = new StreamReader(s, Encoding.Default);
    46             while ((StrDate = Reader.ReadLine()) != null)
    47             {
    48                 strValue += StrDate + "\r\n";
    49             }
    50             // txtInfo.Text = strValue; 
    51             Reader.Close();
    52         }

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