前台关闭iframe页面时把iframe从内存中清理
var iframe = $('#' + iframeID).prop('contentWindow');$('#' + iframeID).attr('src', 'about:blank');try {iframe.document.write('');iframe.document.clear();} catch (e) { }//把iframe从页面移除 $('#' + iframeID).remove();
后台使用SignalR Hub的关闭连接事件，线程取消CancellationTokenSource 对象一定要使用静态变量
using HenryMes.Model;using Microsoft.AspNet.SignalR;using Microsoft.AspNet.SignalR.Hubs;using System;using System.Threading;using System.Threading.Tasks;namespace HenryMes.WebProtal.SignalR.OEE.Equipment{[HubName("OEEEquipmentHub")]public class OEEEquipmentHub : Hub{private static CancellationTokenSource tokenSource = new CancellationTokenSource();private static CancellationToken token;/// <summary>/// /// </summary>/// <param name="connectId">连接ID</param>/// <param name="id">设备ID</param>public void Send(string connectId, string id){if (string.IsNullOrEmpty(id))return;if (tokenSource.IsCancellationRequested){tokenSource = new CancellationTokenSource();}token = tokenSource.Token;Task.Run(() =>{while (!token.IsCancellationRequested){try{var model = new OEEEquipmentModel();Random rnd = new Random(System.Guid.NewGuid().GetHashCode());//完成率model.wan_cheng_lu = rnd.Next(10, 90).ToString();//总在线时间model.zong_zai_xian_shi_jian = rnd.Next(10, 90).ToString();//总故障时间model.zong_gu_zhang_shi_jian = rnd.Next(10, 90).ToString();//计划停机时间model.ji_hua_ting_ji_shi_jian = rnd.Next(10, 90).ToString();//理想运行时间model.li_xiang_yun_xing_shi_jian = rnd.Next(10, 90).ToString();//总运行时间model.zong_yun_xing_shi_jian = rnd.Next(10, 90).ToString();//实际运行时间model.shi_ji_yun_xing_shi_jian = rnd.Next(10, 90).ToString();//可用率model.ke_yong_lu = rnd.Next(10, 90).ToString();//推送到前端OEEEquipmentNotifier.RefreshEquipment(connectId, model);}catch (Exception ex){}//2秒推送一次Thread.Sleep(2000);}}, token);}public override Task OnDisconnected(bool stopCalled){if (_connections.Contains(Context.ConnectionId)){_connections.Remove(Context.ConnectionId);}try{if (_connections.Count == 0){_tokenSource.Cancel();_tokenSource.Dispose();}}catch (Exception ex){throw ex;}return base.OnDisconnected(stopCalled);}}}
前台使用SignalR建立连接
var myHub = $.connection.OEEFactoryHub;$.connection.hub.stop();$.connection.hub.start().done(function () {//客户端发送信息到服务器myHub.server.send($.connection.hub.id);});
前台接收后台推送过来的数据，并注册关闭页面的事件(在页面关闭时关闭SignalR)
//后端设备信息推送到前端myHub.client.RefreshFactory = function (message) {//总在线时间app.zong_zai_xian_shi_jian = message.zong_zai_xian_shi_jian;//总故障时间app.zong_gu_zhang_shi_jian = message.zong_gu_zhang_shi_jian;//计划停机时间app.ji_hua_ting_ji_shi_jian = message.ji_hua_ting_ji_shi_jian;//理想运行时间app.li_xiang_yun_xing_shi_jian = message.li_xiang_yun_xing_shi_jian;//总运行时间app.zong_yun_xing_shi_jian = message.zong_yun_xing_shi_jian;//实际运行时间app.shi_ji_yun_xing_shi_jian = message.shi_ji_yun_xing_shi_jian;//可用率app.ke_yong_lu = message.ke_yong_lu;//设备数量app.she_bei_shu_liang = message.she_bei_shu_liang;//停机数量app.ting_ji_shu_liang = message.ting_ji_shu_liang;//故障数量app.gu_zhang_shu_liang = message.gu_zhang_shu_liang;//运行数量app.yun_xing_shu_liang = message.yun_xing_shu_liang;app.echartsWorkshopProduction();};window.onbeforeunload = function (e) {$.connection.hub.stop();};
如果觉得《关闭iframe时同时关闭后台SignalR的定时推送(关闭websocket连接 关闭推送线程)》对你有帮助，请点赞、收藏，并留下你的观点哦！
