c#实现http请求并解析返回之json

   C#是通过HttpWebRequest类和HttpWebResponseL类来实现http请求的发出和http响应的接收的，由于本人刚用这两个类，不是太熟悉，所以属性和方法就不在这里给大家讲解了。

       代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Xml;
using System.Web;
using System.IO;
using System.Runtime.Serialization.Json;
using System.Runtime.Serialization;
 
namespace httpTest
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("请输入您要查询的地区！");
            string region = Console.ReadLine();
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://api.36wu.com/Weather/GetWeather?district="+region);
            request.Method = "GET";
            HttpWebResponse response = request.GetResponse() as HttpWebResponse;
            StreamReader stream = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
            string jsonstr = stream.ReadLine();
            var ser = new DataContractJsonSerializer(typeof(weater));
            var ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonstr));
            weater sn = (weater)ser.ReadObject(ms);
            Console.WriteLine("{0}的当前气温是{1}",region,sn.data.temp);
            Console.ReadKey();
            //记得要关闭流
        }
    }
    [DataContract]
    class weater
    {
        [DataMember]
        public int status { get; set; }
        [DataMember]
        public string message { get; set; }
        [DataMember]
        public data data { get; set; }
    }
    [DataContract]
    class data
    {
        [DataMember]
        public string dateTime { get; set; }
        [DataMember]
        public string city { get; set; }
        [DataMember]
        public string temp { get; set; }
        [DataMember]
        public string minTemp { get; set; }
        [DataMember]
        public string maxTemp { get; set; }
        [DataMember]
        public string weathe { get; set; }
        [DataMember]
        public string windDirection { get; set; }
        [DataMember]
        public string windForce { get; set; }
        [DataMember]
        public string humidity { get; set; }
        [DataMember]
        public string img_1 { get; set; }
        [DataMember]
        public string img_2 { get; set; }
        [DataMember]
        public string refreshTime { get; set; }
    }
}

如果请求的字符串转json，可以用Newtonsoft.Json.dll 或  System.Text.Json

转： https://blog.csdn.net/green__apple/article/details/42292717

https://docs.microsoft.com/zh-cn/dotnet/framework/network-programming/how-to-request-data-using-the-webrequest-class

https://docs.microsoft.com/zh-cn/dotnet/api/system.net.webrequest?view=net-5.0