WingPaymentService/Common/WeChat/WxPayHttpRequest.cs

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

namespace WingPaymentService.Common.WeChat
{
    public class WxPayHttpRequest
    {
        private HttpClient _request = new();
        public async Task<string> Post(string xml, string url, int timeout)
        {
            _request.Timeout = TimeSpan.FromSeconds(timeout);
            var result = await _request.PostAsync(url,  new StringContent(xml));
            return await result.Content.ReadAsStringAsync();
        }
    }
}