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高胜

2023-03-22 fd423d7d9d5581c6ddf0858b9a5b1989fc18e2c5

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using HDLMonitorService.Entity;
using HDLMonitorService.Helper;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Messaging;
using System.Net;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
 
namespace HDLMonitorService
{
    public class ListenerAlarm
    {
        static HttpListener httpobj;
 
        public static void Listener()
        {
            //提供一个简单的、可通过编程方式控制的 HTTP 协议侦听器。此类不能被继承。
            httpobj = new HttpListener();
            //定义url及端口号，通常设置为配置文件
            httpobj.Prefixes.Add($"http://+:{ConfigurationManager.AppSettings["ListenerAlarmProt"].ToString()}/");
            //启动监听器
            httpobj.Start();
            //异步监听客户端请求，当客户端的网络请求到来时会自动执行Result委托
            //该委托没有返回值，有一个IAsyncResult接口的参数，可通过该参数获取context对象
            httpobj.BeginGetContext(Result, null);
        }
 
        private static async void beginGetContext()
        {
            try
            {
                //当接收到请求后程序流会走到这里
                //继续异步监听
                httpobj.BeginGetContext(Result, null);
            }
            catch
            {
                await System.Threading.Tasks.Task.Delay(10);
                //继续异步监听
                beginGetContext();
            }
        }
        private static void Result(IAsyncResult ar)
        {
            beginGetContext();
 
            //获得context对象
            var context = httpobj.EndGetContext(ar);
            context.Response.ContentEncoding = Encoding.UTF8;
            try
            {
                if (context.Request.InputStream != null)
                {
                    var byteList = new List<byte>();
                    var byteArr = new byte[1024 * 2];
                    int readLen = 0;
                    int len = 0;
                    //接收客户端传过来的数据并转成字符串类型
                    do
                    {
                        readLen = context.Request.InputStream.Read(byteArr, 0, byteArr.Length);
                        len += readLen;
                        byteList.AddRange(byteArr);
                    } while (readLen != 0);
 
                    var data = Encoding.UTF8.GetString(byteList.ToArray(), 0, len);
                    //处理客户端发送的请求并返回处理信息
                    var info = JsonConvert.DeserializeObject<MqAlarmReqPack>(data);
                    Process(info);
                }
            }
            catch { }
            var result = new byte[] { };
            using (var stream = context.Response.OutputStream)
            {
                //把处理信息返回到客户端
                stream.Write(result, 0, result.Length);
            }
        }
 
        private static void Process(MqAlarmReqPack info)
        {
            try
            {
                AlarmHp.ApplicationAlarm(info.ServiceName, info.AlarmType, info.Content, info.Address, info.Title);
            }
            catch (Exception ex) { LogHp.WriteLog("消息队列异常", Newtonsoft.Json.JsonConvert.SerializeObject(ex)); }
        }
    }
}