代码代建简易WEB服务器

ContentType类型参考 https://www.runoob.com/http/http-content-type.html

作者：ludewig 链接：https://blog.csdn.net/lordwish/article/details/86615077

只是实现了Get的部分资源访问，用于展示简单的网页，解决JS需要IIS的跨域问题，在不需要搭建IIS的情况下显示内容
C#代码

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
namespace TestHttpListener
{
    class Program
    {
        /// <summary>
        /// 网页项目地址,最后需要加"\"
        /// </summary>
        static string path = @"网页项目地址";
        /// <summary>
        /// URL
        /// </summary>
        static string url = "http://localhost:8899/";
        static void Main(string[] args)
        {
            HttpListener listener = new HttpListener();
            listener.AuthenticationSchemes = AuthenticationSchemes.Anonymous;
            listener.Prefixes.Add(url);
            listener.Start();
            listener.BeginGetContext(ListenerHandle, listener);
            Console.ReadKey();
            listener.Stop();
            listener.Close();
        }
        private static void ListenerHandle(IAsyncResult result)
        {
            HttpListener listener = result.AsyncState as HttpListener;
            if (listener == null)
            {
                return;
            }
            if (listener.IsListening)
            {
                HttpListenerContext context = listener.EndGetContext(result);
                listener.BeginGetContext(ListenerHandle, result.AsyncState);
                //解析Request请求
                HttpListenerRequest request = context.Request;
                switch (request.HttpMethod)
                {
                    case "POST":
                        break;
                    case "GET":
                        string filePath = string.Empty;
                        if (request.RawUrl=="/")
                        {
                            /*主页*/
                            filePath = Path.Combine(path, "index.html");
                        }
                        else
                        {
                            filePath = Path.Combine(path, request.RawUrl.Replace('/', '\\').TrimStart('\\'));
                        }
                        using (HttpListenerResponse response = context.Response)
                        {
                            response.ContentEncoding = Encoding.UTF8;
                            byte[] bytes = null;
                            if (File.Exists(filePath))
                            {
                                response.StatusCode = 200;
                                string suffixName = new FileInfo(filePath).Extension;
                                response.ContentType = $"{GetContentType(suffixName)};charset=UTF-8";
                                bytes = File.ReadAllBytes(filePath);
                            }
                            else
                            {
                                response.StatusCode = 200;
                                response.ContentType = "text/html;charset=UTF-8";
                                bytes = Encoding.UTF8.GetBytes("404");
                            }
                            using (Stream stream = response.OutputStream)
                            {
                                stream.Write(bytes, 0, bytes.Length);
                            }
                        }
                    break;
                }
            }
        }
        /// <summary>
        /// 获取内容类型
        /// 参考:https://www.runoob.com/http/http-content-type.html
        /// </summary>
        /// <param name="suffixName">文件后缀名称</param>
        /// <returns>内容类型</returns>
        private static string GetContentType(string suffixName)
        {
            string name = suffixName.ToLower();
            switch (name)
            {
                case ".html":
                    return "text/html";
                case ".jpeg":
                case ".jpg":
                    return "image/jpeg";
                case ".js":
                    return "application/x-javascript";
                case ".css":
                    return "text/css";
                case ".ico":
                    return "image/x-icon";
                case ".json":
                    return "application/json";
                default:
                    break;
            }
            return "text/plain";
        }
    }
}