C# 調用HTTP接口兩種方式

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;

namespace WebApplication1
{
    public class RestClient
    {
        private string BaseUri;
        public RestClient(string baseUri)
        {
            this.BaseUri = baseUri;
        }

        #region Get請求
        public string Get(string uri)
        {
            //先根據用戶請求的uri構造請求地址
            string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);
            //創建Web訪問對  象
            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
            //通過Web訪問對象獲取響應內容
            HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
            //通過響應內容流創建StreamReader對象，因為StreamReader更高級更快
            StreamReader reader = new StreamReader(myResponse.GetResponseStream(),Encoding.UTF8);
            //string returnXml = HttpUtility.UrlDecode(reader.ReadToEnd());//如果有編碼問題就用這個方法
            string returnXml = reader.ReadToEnd();//利用StreamReader就可以從響應內容從頭讀到尾
            reader.Close();
            myResponse.Close();
            return returnXml;
        }
        #endregion

        #region Post請求
        public string Post(string data, string uri)
        {
            //先根據用戶請求的uri構造請求地址
            string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);
            //創建Web訪問對象
            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
            //把用戶傳過來的數據轉成“UTF-8”的字節流
            byte[] buf = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(data);

            myRequest.Method = "POST";
            myRequest.ContentLength = buf.Length;
            myRequest.ContentType = "application/json";
            myRequest.MaximumAutomaticRedirections = 1;
            myRequest.AllowAutoRedirect = true;
            //發送請求
            Stream stream = myRequest.GetRequestStream();
            stream.Write(buf,0,buf.Length);
            stream.Close();

            //獲取接口返回值
            //通過Web訪問對象獲取響應內容
            HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
            //通過響應內容流創建StreamReader對象，因為StreamReader更高級更快
            StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
            //string returnXml = HttpUtility.UrlDecode(reader.ReadToEnd());//如果有編碼問題就用這個方法
            string returnXml = reader.ReadToEnd();//利用StreamReader就可以從響應內容從頭讀到尾
            reader.Close();
            myResponse.Close();
            return returnXml;

        }
        #endregion

        #region Put請求
        public string Put(string data, string uri)
        {
            //先根據用戶請求的uri構造請求地址
            string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);
            //創建Web訪問對象
            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
            //把用戶傳過來的數據轉成“UTF-8”的字節流
            byte[] buf = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(data);

            myRequest.Method = "PUT";
            myRequest.ContentLength = buf.Length;
            myRequest.ContentType = "application/json";
            myRequest.MaximumAutomaticRedirections = 1;
            myRequest.AllowAutoRedirect = true;
            //發送請求
            Stream stream = myRequest.GetRequestStream();
            stream.Write(buf, 0, buf.Length);
            stream.Close();

            //獲取接口返回值
            //通過Web訪問對象獲取響應內容
            HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
            //通過響應內容流創建StreamReader對象，因為StreamReader更高級更快
            StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
            //string returnXml = HttpUtility.UrlDecode(reader.ReadToEnd());//如果有編碼問題就用這個方法
            string returnXml = reader.ReadToEnd();//利用StreamReader就可以從響應內容從頭讀到尾
            reader.Close();
            myResponse.Close();
            return returnXml;

        }
        #endregion


        #region Delete請求
        public string Delete(string data, string uri)
        {
            //先根據用戶請求的uri構造請求地址
            string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);
            //創建Web訪問對象
            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
            //把用戶傳過來的數據轉成“UTF-8”的字節流
            byte[] buf = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(data);

            myRequest.Method = "DELETE";
            myRequest.ContentLength = buf.Length;
            myRequest.ContentType = "application/json";
            myRequest.MaximumAutomaticRedirections = 1;
            myRequest.AllowAutoRedirect = true;
            //發送請求
            Stream stream = myRequest.GetRequestStream();
            stream.Write(buf, 0, buf.Length);
            stream.Close();

            //獲取接口返回值
            //通過Web訪問對象獲取響應內容
            HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
            //通過響應內容流創建StreamReader對象，因為StreamReader更高級更快
            StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
            //string returnXml = HttpUtility.UrlDecode(reader.ReadToEnd());//如果有編碼問題就用這個方法
            string returnXml = reader.ReadToEnd();//利用StreamReader就可以從響應內容從頭讀到尾
            reader.Close();
            myResponse.Close();
            return returnXml;

        }
        #endregion
    }
}