简单利用一般处理程序处理接口请求并返回数据

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace Demo
{
    /// <summary>
    /// Handler1 的摘要说明
    /// </summary>
    public class Handler1 : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            context.Response.Write("Hello World");
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}

string htmlStr = string.Empty;
string requestUrl = "https://api.apiopen.top/recommendPoetry";
//创建一个客户端的Http请求实例
HttpWebRequest request = WebRequest.Create(requestUrl) as HttpWebRequest;
request.Method = "GET";

//获取当前Http请求的响应实例
HttpWebResponse response = request.GetResponse() as HttpWebResponse;

Stream responseStream = response.GetResponseStream();
using (StreamReader reader = new StreamReader(responseStream, Encoding.GetEncoding("UTF-8")))
{
    htmlStr = reader.ReadToEnd();
}
//向浏览器传递数据
context.Response.Write(htmlStr);