这几天想着将一个winform的工具上线到web上,因为对时时性的要求比较高,找朋友咨询了一下推荐了SignlarR 框架,比较强大.昨天才看到,今天研究了一下将里面的例子都拿出来共享.
官方的参考:http://www.asp.net/signalr/overview/getting-started
安装SignalR： NuGet命令：
PM> Install-Package Microsoft.AspNet.SignalR
<------------1:与他人聊天:------------>
后台代码示例:
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Web; 5 using Microsoft.AspNet.SignalR; 6 using Microsoft.AspNet.SignalR.Hubs; 7 8 namespace SignalRChat.Hubs.Data 9 { 10 [HubName("ViewDataHub")] 11 public class ViewDataHub : Hub 12 { 13 //this is just called by client and return the value for it . 14 public string Hello() 15 { 16 return "hello"; 17 } 18 19 20 21 //this fucntion will be called by client and the inside function 22 //Clients.Others.talk(message); 23 //will be called by clinet javascript function . 24 public void SendMessag(string message) 25 { 26 Clients.Others.talk(message); 27 } 28 29 } 30 }
小提示:注意其它的红色字体部分
前台代码示例:
1 <!DOCTYPE html> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <title></title> 5 <!--Script references. --> 6 <!--Reference the jQuery library. --> 7 <script src="Scripts/jquery-1.10.2.min.js"></script> 8 <!--Reference the SignalR library. --> 9 <script src="Scripts/jquery.signalR-2.0.2.js"></script> 10 <!--Reference the autogenerated SignalR hub script. --> 11 <script src='signalr/hubs'></script> 12 <!--Add script to update the page and send messages.--> 13 <script type='text/javascript'> 14 15 16 $(function () { 17 // Declare a proxy to reference the hub. 18 var chat = $.connection.ViewDataHub; 19 20 21 //init the client function 22 init(chat); 23 24 25 $("#btnclick").click(function () { 26 //Response the information 27 $.connection.hub.start().done(function () { 28 chat.server.hello().done(function (res) { 29 alert(res); 30 })//end of done function 31 })//the end of the $.connection 32 })//end of click function 33 34 35 36 $("#btntalk").click(function () { 37 $.connection.hub.start().done(function () { 38 chat.server.sendMessag($("#txttalk").val()); 39 $("#txttalk").val(""); 40 })//the end of the $.connection 41 42 });//btntalk end 43 44 }) 45 46 47 //init the client method 48 function init(chat) { 49 50 chat.client.talk = function (message) { 51 var talk = "<h1>" + message + "</h1>"; 52 53 $("#dvtalk").append(talk); 54 55 } //end regist the client function 56 57 } //end of the initfunction 58 59 </script> 60 </head> 61 <body> 62 <div> 63 <table id="tbtoday"></table> 64 <input type="text" id="txttalk" width="150"/> 65 <input type="button" id="btnclick" value="clickme" /> 66 <input type="button" id="btntalk" value="talkwithme" /> 67 <div id="dvtalk"> 68 69 </div> 70 </div> 71 </body> 72 </html>
出现的效果:
两个窗口之间的聊天
我知道你心中肯定有疑问,我也是这样,当我刚接触的时候完全搞不懂这是为什么会这样,我们来回顾一次正常的聊天过程:
那我们重新拆分以上的方法来证明我们的猜想是否正确
1 $("#btntalk").click(function () { 2 $.connection.hub.start().done(function () { 3 chat.server.sendMessag($("#txttalk").val()); 4 $("#txttalk").val(""); 5 })//the end of the $.connection 6 7 });//btntalk end
chat.server.sendMessage(message) 从客户端调用了服务器的方法(服务器扮演的是中转站的角色).
此时的message 从客户端A发送给了服务端
那服务器就应该有这样的一个方法与之相对应
后台代码:
1 //this fucntion will be called by client and the inside function 2 //Clients.Others.talk(message); 3 //will be called by clinet javascript function . 4 public void SendMessag(string message) 5 { 6 Clients.Others.talk(message); 7 }
服务端接收到A发送来的message.
这个时候服务端将消息推送给客户端B
Clients.Others.talk(message);
这个时候客户端B应该有一个talk的方法来将消息显示出来
1 //init the client method 2 function init(chat) { 3 4 chat.client.talk = function (message) { 5 var talk = "<h1>" + message + "</h1>"; 6 7 $("#dvtalk").append(talk); 8 9 } //end regist the client function 10 11 } //end of the initfunction
这个时候客户端B接收到消息,用Js的方法显示出来消息. 一次通话就完成了.
<------------二,客户端传递参数给服务端并从服务端得到返回值:------------>
前端代码:
1 <!DOCTYPE html> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <title></title> 5 <!--Script references. --> 6 <!--Reference the jQuery library. --> 7 <script src="Scripts/jquery-1.10.2.min.js"></script> 8 <!--Reference the SignalR library. --> 9 <script src="Scripts/jquery.signalR-2.0.2.js"></script> 10 <!--Reference the autogenerated SignalR hub script. --> 11 <script src='signalr/hubs'></script> 12 <!--Add script to update the page and send messages.--> 13 <script type='text/javascript'> 14 15 16 $(function () { 17 // Declare a proxy to reference the hub. 18 var chat = $.connection.ViewDataHub; 19 20 21 //init the client function 22 init(chat); 23 24 25 $("#btnclick").click(function () { 26 //Response the information 27 $.connection.hub.start().done(function () { 28 chat.server.hello($("#txttalk").val()).done(function (res) { 29 var talk = "<h1>" + res + "</h1>"; 30 31 $("#dvtalk").append(talk); 32 })//end of done function 33 })//the end of the $.connection 34 })//end of click function 35 36 37 38 $("#btntalk").click(function () { 39 $.connection.hub.start().done(function () { 40 chat.server.sendMessag($("#txttalk").val()); 41 $("#txttalk").val(""); 42 })//the end of the $.connection 43 44 });//btntalk end 45 46 }) 47 48 49 //init the client method 50 function init(chat) { 51 52 chat.client.talk = function (message) { 53 var talk = "<h1>" + message + "</h1>"; 54 55 $("#dvtalk").append(talk); 56 57 } //end regist the client function 58 59 } //end of the initfunction 60 61 </script> 62 </head> 63 <body> 64 <div> 65 <table id="tbtoday"></table> 66 <input type="text" id="txttalk" width="150"/> 67 <input type="button" id="btnclick" value="clickme" /> 68 <input type="button" id="btntalk" value="talkwithme" /> 69 <div id="dvtalk"> 70 71 </div> 72 </div> 73 </body> 74 </html>
后端代码:
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Web; 5 using Microsoft.AspNet.SignalR; 6 using Microsoft.AspNet.SignalR.Hubs; 7 8 namespace SignalRChat.Hubs.Data 9 { 10 [HubName("ViewDataHub")] 11 public class ViewDataHub : Hub 12 { 13 //this is just called by client and return the value for it . 14 public string Hello(string msg) 15 { 16 17 string res = "sorry ,i don't know"; 18 if (msg.Contains("hello")) 19 { 20 res = "hello ,guy"; 21 } 22 if (msg.Contains("how")) 23 { 24 res = "how are you ~"; 25 } 26 if (msg.Contains("love")) 27 { 28 res = "don't fall in love with me ~"; 29 } 30 return res; 31 } 32 33 34 35 //this fucntion will be called by client and the inside function 36 //Clients.Others.talk(message); 37 //will be called by clinet javascript function . 38 public void SendMessag(string message) 39 { 40 Clients.Others.talk(message); 41 } 42 43 } 44 }
效果图:
<------------三，客户端刷时时的刷新数据------------>
前端：
1 <!DOCTYPE html> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 5 <title></title> 6 <script src="Scripts/jquery-1.6.4.min.js"></script> 7 <script src="Scripts/jquery.signalR-2.2.0.min.js"></script> 8 <script src='signalr/hubs'></script> 9 <script> 10 var chat; 11 var arr = []; 12 var loopdo; 13 // 14 $(function () { 15 // Created proxy 16 chat = $.connection.viewDataHub; 17 Init(chat); 18 //on the start done 19 $.connection.hub.start().done(function () { 20 21 $("#btnloop").click(function () { 22 chat.server.refresh().done(function (data) { 23 AppendTable(data); 24 })//done end 25 }) //btnloop end 26 27 28 $("#btnclient").click(function () { 29 chat.server.RefreshClients(); 30 }); 31 32 33 $("#btnclick").click(function () { 34 Start(); 35 }); 36 37 38 $("#btnstop").click(function () { 39 Stop(); 40 }); 41 42 }) 43 }) //$function 44 45 46 function Start() { 47 if (loopdo == null) { 48 loopdo = setInterval('$("#btnloop").click()', 1000); 49 } 50 51 } 52 53 function Stop() { 54 if (loopdo != null) { 55 clearInterval(loopdo); 56 } 57 } 58 59 function AppendTable(data) { 60 arr.length = 0; 61 arr.push("<tr><th>Opendoor</th><th>Price</th><th>Opentiem</th></tr>"); 62 $.each(data, function (i) { 63 arr.push("<tr>"); 64 arr.push("<td>" + data[i].Opendoor + "</td>"); 65 arr.push("<td>" + data[i].Price + "</td>"); 66 arr.push("<td>" + data[i].Opentiem + "</td>"); 67 arr.push("</tr>"); 68 }); 69 $("#tblist").html(arr.join("")); 70 } 71 72 function Init(chat) { 73 chat.client.myrefresh = function (data) { 74 AppendTable(data); 75 } 76 77 } 78 79 </script> 80 </head> 81 <body> 82 <input type="button" id="btnclick" value="Start" /> 83 84 <input type="button" id="btnloop" value="View" style="display: none" /> 85 86 <input type="button" id="btnstop" value="Stop" /> 87 88 <input type="button" id="btnclient" value="ClientAll" /> 89 <table id="tblist"> 90 </table> 91 </body> 92 93 94 95 </html>
后端：
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Web; 5 using Microsoft.AspNet.SignalR; 6 using Microsoft.AspNet.SignalR.Hubs; 7 namespace MyReresh.ViewData 8 { 9 [HubName("viewDataHub")] 10 public class ViewDataHub : Hub 11 { 12 [HubMethodName("refresh")] 13 public List<Stock> Refresh() 14 { 15 return Stock.GetAll(); 16 } 17 18 [HubMethodName("RefreshClients")] 19 public void RefreshClients() 20 { 21 Clients.All.myrefresh(Stock.GetAll()); 22 } 23 24 25 } 26 27 public class Stock 28 { 29 private string opendoor; 30 31 public string Opendoor 32 { 33 get { return opendoor; } 34 set { opendoor = value; } 35 } 36 37 private double price; 38 39 public double Price 40 { 41 get { return price; } 42 set { price = value; } 43 } 44 45 private DateTime opentiem = System.DateTime.Now; 46 47 public DateTime Opentiem 48 { 49 get { return opentiem; } 50 set { opentiem = value; } 51 } 52 53 54 public static List<Stock> GetAll() 55 { 56 Random rand = new Random(); 57 List<Stock> list = new List<Stock>() 58 { 59 new Stock{Opendoor="Door1",Price=rand.NextDouble()*100}, 60 new Stock{Opendoor="Door2",Price=rand.NextDouble()*100}, 61 new Stock{Opendoor="Door3",Price=rand.NextDouble()*100} 62 }; 63 return list; 64 } 65 66 } 67 }
注：本次实现的所谓的时时刷新数据和官方提供的Demo有很大的差异，并不是后台代码的角度来刷新，而是从前端的角度来实现的。