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   源码介绍

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

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            //控制台获取当前路径
            Console.WriteLine("hello world!!!!");
            Console.WriteLine(Environment.CurrentDirectory);
            Console.WriteLine(AppDomain.CurrentDomain.BaseDirectory);
            Console.WriteLine(Path.GetFullPath("../../"));
            httpwebcontext();
            ///获取路径end//////
            Console.ReadKey();
            string path=string.Empty;
            //UserInfo user = new UserInfo { Name = "jack", Age = 23 };
            // string userStr = JsonHelper.SerializeObject(user);//序列化
            string userStr = string.Empty;
            GetFun(path);
            PostFun(path, userStr);
        }
        

        /// <summary>
        /// 获取web页面上的值
        /// </summary>
        public static void httpwebcontext()
        {
            //创建一个webrequest实例 
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://www.baidu.com");

            //request.Method = "POST";
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Console.WriteLine(response.StatusDescription);
            //接受数据 
            Stream datastream = response.GetResponseStream();
            StreamReader reader = new StreamReader(datastream);
            string responseFromServer = reader.ReadToEnd();
            Console.WriteLine(responseFromServer);
            //关闭stream/response
            reader.Close();
            datastream.Close();
            response.Close();
        }
        /// <summary>
        /// 异步get请求
        /// </summary>
        /// <param name="path"></param>
        public static async void GetFun(string path)
        {
            //消息处理程序
            HttpClientHandler handler = new HttpClientHandler() {AutomaticDecompression = DecompressionMethods.GZip};
            HttpClient httpClient = new HttpClient();
            //异步发送请求
            HttpResponseMessage responseMessage = await httpClient.GetAsync(path);
            //确保响应正常，如果响应不正常EnsureSuccessStatusCode()方法会抛出异常
            responseMessage.EnsureSuccessStatusCode();
            string msg = await responseMessage.Content.ReadAsStringAsync();
            Console.WriteLine(msg);
        }
        /// <summary>
        /// 异步post请求
        /// </summary>
        /// <param name="path"></param>
        /// <param name="data"></param>
       public static async void PostFun(string path,string data)
        {
            HttpClientHandler handler = new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.GZip };
            HttpClient httpClient = new HttpClient(handler);
            //定义data的请求格式以及字符编码
            HttpContent httpContent = new StringContent(data , Encoding.UTF8, "text/json");

            //httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("BasicAuth", Ticket);//验证请求头赋值
            //httpContent.Headers.Add(string name,string value) //添加自定义请求头
           

            HttpResponseMessage responseMessage = await httpClient.PostAsync(path,httpContent);
            responseMessage.EnsureSuccessStatusCode();
            string msg = await responseMessage.Content.ReadAsStringAsync();
            Console.WriteLine(msg);
        }

    }
}