.net c# winform 启动本地端口监听并响应Web结果

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在很多开发当中,都需要监听本地端口,并作出响应

使用.net winform 可轻松的完成该功能

需要使用到 HttpListener 监听类

第一步: 初始化实体

        internal static void ListenerStart(int port)
        {
            if (httpListener != null) return;
            httpListener = new System.Net.HttpListener();
            httpListener.Prefixes.Add("http://+:" + port.ToString() + "/");
            httpListener.Start();//开始监听
            //开始检索，定义异步回调
            for (var i = 0; i < 20; i++) httpListener.BeginGetContext(ReceiveProcess, null);
        }

第二步: 回调函数

        static void ReceiveProcess(IAsyncResult ia)
        {
            System.Net.HttpListenerContext hlc;
            try { hlc = httpListener.EndGetContext(ia); }//完成检索	
            catch (Exception e) { return; }

            try
            {
                hlc.Response.Headers.Clear();
                hlc.Response.StatusCode = 200;
                hlc.Response.Headers["Server"] = hlc.Request.UserHostName;
                hlc.Response.Headers["Last-Modified"] = DateTime.Now.ToString("ddd, dd MMM yyyy HH':'mm':'ss 'GMT'", System.Globalization.CultureInfo.CreateSpecificCulture("en-US"));
                hlc.Response.Headers["Cache-Control"] = "max-age=31536000";
                string response = "<!DOCTYPE html><html lang=\"en\" xmlns=\"http://www.w3.org/1999/xhtml\"><head><meta charset=\"utf-8\" /><title>ggbig.com本地监控测试</title></head><body>";
                response += "给您点响应:" + DateTime.Now.ToString() + "<br/>";
                response += "处理结果值:" + (new Random().Next(1000, 9999)).ToString();
                response += "</body></html>";
                if (response != null)
                {
                    byte[] bytes = System.Text.Encoding.UTF8.GetBytes(response);
                    hlc.Response.OutputStream.Flush();
                    hlc.Response.Headers.Clear();
                    hlc.Response.ContentLength64 = bytes.Length;
                    hlc.Response.OutputStream.Write(bytes, 0, bytes.Length);
                }
            }
            catch (ObjectDisposedException) { hlc.Response.StatusCode = 500; }
            catch (System.Net.HttpListenerException) { hlc.Response.StatusCode = 500; }
            catch (Exception e) { hlc.Response.StatusCode = 500; }
            finally
            {
                hlc.Response.OutputStream.Flush();
                hlc.Response.OutputStream.Close();
                hlc.Response.OutputStream.Dispose();
                hlc.Response.Close();
                httpListener.BeginGetContext(ReceiveProcess, null);
            }
        }

第三步: 停止处理

        internal static void ListenerEnd()
        {
            if (httpListener != null)
            {
                httpListener.Stop();
                httpListener.Abort();
                httpListener.Close();
                httpListener = null;
            }
        }

以上3个步骤便可轻松监听电脑的本地端口,也可以写成服务,这样电脑每次重启后,便可直接监听.

附件:下载该文件资源,减少时间成本(增值服务)

.net c# winform 启动本地端口监听并响应Web结果源码

下载该源码,可直接运行查看结果,帮助您在最短的时间内,掌握HttpListener的使用.

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