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  • C# 中经常用到的HTTP请求类,已封装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访问对象64
                string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);
                HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
                myRequest.Method = "DELETE";
                // 获得接口返回值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方式实现
    
            public string Post(string data, string uri)
            {
                return CommonHttpRequest(data,uri,"POST");
            }
    
            public string CommonHttpRequest(string data, string uri,string type)
            {
                //Web访问对象,构造请求的url地址
                string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);
    
                //构造http请求的对象
                HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
                //转成网络流
                byte[] buf = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(data);
                //设置
                myRequest.Method = type;
                myRequest.ContentLength = buf.Length;
                myRequest.ContentType = "application/json";
                myRequest.MaximumAutomaticRedirections = 1;
                myRequest.AllowAutoRedirect = true;
                // 发送请求
                Stream newStream = myRequest.GetRequestStream();
                newStream.Write(buf, 0, buf.Length);
                newStream.Close();
                // 获得接口返回值
                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方式实现
            public string Get(string uri)
            {
                //Web访问对象64
                string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);
               
                //构造一个Web请求的对象
                HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
                // 获得接口返回值68
                //获取web请求的响应的内容
                HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
                
                //通过响应流构造一个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
        }
    }
    
    
    
    
    //调用代码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);
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  • 原文地址:https://www.cnblogs.com/lastcode/p/4878436.html
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