C# 中經常用到的HTTP請求類，已封裝get,post，delete,put

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.IO;
using System.Web;
namespace WebAPIClientDemo
{
    public class RestClient
    {
        private string BaseUri;
        public RestClient(string baseUri)
        {
            this.BaseUri = baseUri;
        }

        #region Delete方式
        public string Delete(string data, string uri)
        {
            return CommonHttpRequest(data, uri, "DELETE");
        }

        public string Delete(string uri)
        {
            //Web訪問對象64
            string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);
            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
            myRequest.Method = "DELETE";
            // 獲得接口返回值68
            HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
            StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
            //string ReturnXml = HttpUtility.UrlDecode(reader.ReadToEnd());
            string ReturnXml = reader.ReadToEnd();
            reader.Close();
            myResponse.Close();
            return ReturnXml;
        }
        #endregion

        #region Put方式
        public string Put(string data, string uri)
        {
            return CommonHttpRequest(data, uri, "PUT");
        }
        #endregion

        #region POST方式實現

        public string Post(string data, string uri)
        {
            return CommonHttpRequest(data,uri,"POST");
        }

        public string CommonHttpRequest(string data, string uri,string type)
        {
            //Web訪問對象，構造請求的url地址
            string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);

            //構造http請求的對象
            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
            //轉成網絡流
            byte[] buf = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(data);
            //設置
            myRequest.Method = type;
            myRequest.ContentLength = buf.Length;
            myRequest.ContentType = "application/json";
            myRequest.MaximumAutomaticRedirections = 1;
            myRequest.AllowAutoRedirect = true;
            // 發送請求
            Stream newStream = myRequest.GetRequestStream();
            newStream.Write(buf, 0, buf.Length);
            newStream.Close();
            // 獲得接口返回值
            HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
            StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
            string ReturnXml = reader.ReadToEnd();
            reader.Close();
            myResponse.Close();
            return ReturnXml;
        }
        #endregion

        #region GET方式實現
        public string Get(string uri)
        {
            //Web訪問對象64
            string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);
           
            //構造一個Web請求的對象
            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
            // 獲得接口返回值68
            //獲取web請求的響應的內容
            HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
            
            //通過響應流構造一個StreamReader
            StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
            //string ReturnXml = HttpUtility.UrlDecode(reader.ReadToEnd());
            string ReturnXml = reader.ReadToEnd();
            reader.Close();
            myResponse.Close();
            return ReturnXml;
        }
        #endregion
    }
}




//調用代碼demo 
  string serviceUrl = "http://localhost:44540/";
            RestClient client = new RestClient(serviceUrl);
            string data = @"{""UserName"":""1111"",""Age"":123,""Id"":133}";
            string uriPost = "api/values/3";
            string retPost = client.Put(data, uriPost);