C#实现HTTP GET和POST 样例代码

利用C#实现HTTP GET和POST方法的样例代码，供大家学习。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.IO;

namespace MongoDB_Test
{
    class Program
    {
        static CookieContainer cookie = new CookieContainer（）;

        static void Main（string[] args）
        {
            string url = “http://127.0.0.1:9980“;
            string data = “key=1054228&value=test“;
            string result1 = HttpGet（url data）;
            Console.WriteLine（result1.Length + “\n“ + result1）;


            //string result2 = HttpPost（url data）;
            //Console.WriteLine（result2.Length + “\n“ + result2）;
            Console.ReadLine（）;
        }

        private static string HttpPost（string Url string postDataStr）
        {
            HttpWebRequest request = （HttpWebRequest）WebRequest.Create（Url）;
            request.Method = “POST“;
            request.ContentType = “application/x-www-form-urlencoded“;
            request.ContentLength = Encoding.UTF8.GetByteCount（postDataStr）;
            request.CookieContainer = cookie;
            Stream myRequestStream = request.GetRequestStream（）;
            StreamWriter myStreamWriter = new StreamWriter（myRequestStream Encoding.GetEncoding（“gb2312“））;
            myStreamWriter.Write（postDataStr）;
            myStreamWriter.Close（）;

            HttpWebResponse response = （HttpWebResponse）request.GetResponse（）;

            response.Cookies = cookie.GetCookies（response.ResponseUri）;
            Stream myResponseStream = response.GetResponseStream（）;
            StreamReader myStreamReader = new StreamReader（myResponseStream Encoding.GetEncoding（“utf-8“））;
            string retString = myStreamReader.ReadToEnd（）;
            myStreamReader.Close（）;
            myResponseStream.Close（）;

            return retString;
        }

        private static string HttpGet（string Url string postDataStr）
        {
            HttpWebRequest request = （HttpWebRequest）WebRequest.Create（Url + （postDataStr == ““ ? ““ : “?“） + postDataStr）;
            request.Method = “GET“;
            request.ContentType = “text/html;charset=UTF-8“;

            HttpWebResponse response = （HttpWebResponse）request.GetResponse（）;
            Stream myResponseStream = response.GetResponseStream（）;
            StreamReader myStreamReader = new StreamReader（myResponseStream Encoding.GetEncoding（“utf-8“））;
            string retString = myStreamReader.ReadToEnd（）;
            myStreamReader.Close（）;
            myResponseStream.Close（）;

            return retString;
        }
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件        161  2017-05-09 11:38  HTTP_Demo\ConsoleApplication1\app.config

     文件       6656  2016-05-25 20:45  HTTP_Demo\ConsoleApplication1\bin\Debug\ConsoleApplication1.exe

     文件        161  2017-05-09 11:38  HTTP_Demo\ConsoleApplication1\bin\Debug\ConsoleApplication1.exe.config

     文件      13824  2016-05-25 20:45  HTTP_Demo\ConsoleApplication1\bin\Debug\ConsoleApplication1.pdb

     文件      23168  2018-10-26 16:13  HTTP_Demo\ConsoleApplication1\bin\Debug\ConsoleApplication1.vshost.exe

     文件        161  2017-05-09 11:38  HTTP_Demo\ConsoleApplication1\bin\Debug\ConsoleApplication1.vshost.exe.config

     文件        490  2018-04-12 07:35  HTTP_Demo\ConsoleApplication1\bin\Debug\ConsoleApplication1.vshost.exe.manifest

     文件     368640  2015-12-09 16:43  HTTP_Demo\ConsoleApplication1\bin\Debug\MongoDB.Bson.dll

     文件     529408  2015-12-09 16:43  HTTP_Demo\ConsoleApplication1\bin\Debug\MongoDB.Driver.dll

     文件       2525  2017-05-24 10:17  HTTP_Demo\ConsoleApplication1\ConsoleApplication1.csproj

     文件       1804  2018-10-26 16:13  HTTP_Demo\ConsoleApplication1\obj\x86\Debug\ConsoleApplication1.csproj.FileListAbsolute.txt

     文件       1755  2016-05-25 15:01  HTTP_Demo\ConsoleApplication1\obj\x86\Debug\ConsoleApplication1.csprojResolveAssemblyReference.cache

     文件       6656  2016-05-25 20:45  HTTP_Demo\ConsoleApplication1\obj\x86\Debug\ConsoleApplication1.exe

     文件      13824  2016-05-25 20:45  HTTP_Demo\ConsoleApplication1\obj\x86\Debug\ConsoleApplication1.pdb

     文件       6494  2017-05-23 17:50  HTTP_Demo\ConsoleApplication1\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件       2655  2016-05-25 20:05  HTTP_Demo\ConsoleApplication1\Program.cs

     文件       1382  2017-04-17 19:45  HTTP_Demo\ConsoleApplication1\Properties\AssemblyInfo.cs

    ..A..H.     15872  2017-04-17 19:51  HTTP_Demo\ConsoleApplication1.suo

    ..A..H.     34816  2017-05-16 15:57  HTTP_Demo\ConsoleApplication1.v12.suo

     文件        899  2017-04-17 19:46  HTTP_Demo\HTTP_GetPost.sln

    ..A..H.     30208  2018-10-26 16:15  HTTP_Demo\HTTP_GetPost.v12.suo

     目录          0  2017-04-17 19:45  HTTP_Demo\ConsoleApplication1\obj\x86\Debug\TempPE

     目录          0  2016-05-25 20:45  HTTP_Demo\ConsoleApplication1\obj\x86\Debug

     目录          0  2016-05-25 15:01  HTTP_Demo\ConsoleApplication1\bin\Debug

     目录          0  2017-05-23 17:49  HTTP_Demo\ConsoleApplication1\obj\x86

     目录          0  2017-05-23 17:49  HTTP_Demo\ConsoleApplication1\bin

     目录          0  2017-05-23 17:49  HTTP_Demo\ConsoleApplication1\obj

     目录          0  2017-05-23 17:49  HTTP_Demo\ConsoleApplication1\Properties

     目录          0  2016-05-25 20:05  HTTP_Demo\ConsoleApplication1

     目录          0  2016-05-25 20:53  HTTP_Demo

............此处省略3个文件信息