c# -使用httpwebrequest发送文本

using System;
using System.IO;
using System.Net;
using System.Text;

class Program
{
    static void Main()
    {
        string url = "http://example.com/api/endpoint";
        string text = "Hello, World!";

        // 创建HttpWebRequest对象
        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
        request.Method = "POST";
        request.ContentType = "text/plain";

        // 将文本转换为字节数组
        byte[] data = Encoding.UTF8.GetBytes(text);

        // 设置请求内容长度
        request.ContentLength = data.Length;

        // 获取请求流并写入数据
        using (Stream requestStream = request.GetRequestStream())
        {
            requestStream.Write(data, 0, data.Length);
        }

        // 发送请求并获取响应
        using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
        {
            // 读取响应内容
            using (Stream responseStream = response.GetResponseStream())
            {
                StreamReader reader = new StreamReader(responseStream);
                string responseText = reader.ReadToEnd();
                Console.WriteLine(responseText);
            }
        }
    }
}