Http请求

using System;
using System.Net.Http;
using System.Net.Http.Json;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Program
    {
        static async Task Main(string[] args)
        {
            HttpClient client = new HttpClient();
            string url = @"http://47.104.4.215/spi?code=S20210422002";
            HttpRequestMessage msg = new HttpRequestMessage(HttpMethod.Get, url);
            msg.Headers.Add("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36");
            var reponse = await client.SendAsync(msg);
            Console.WriteLine(await reponse.Content.ReadFromJsonAsync<object>());
        }
    }
}