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.
最全的参考:http://www.asp.net/signalr/overview/getting-started
关于如果安装SignalR： NuGet命令：
PM> Install-Package Microsoft.AspNet.SignalR
<------------1:与他人聊天:<------------
后台代码示例:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Microsoft.AspNet.SignalR;
using Microsoft.AspNet.SignalR.Hubs;
namespace SignalRChat.Hubs.Data
{
[HubName("ViewDataHub")]
public class ViewDataHub : Hub
{
//this is just called by client and return the value for it .
public string Hello()
{
return "hello";
}
//this fucntion will be called by client and the inside function
//Clients.Others.talk(message);
//will be called by clinet javascript function .
public void SendMessag(string message)
{
Clients.Others.talk(message);
}
}
}
小提示:注意其它的红色字体部分
前台代码示例:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<!--Script references. -->
<!--Reference the jQuery library. -->
<script src="Scripts/jquery-1.10.2.min.js"></script>
<!--Reference the SignalR library. -->
<script src="Scripts/jquery.signalR-2.0.2.js"></script>
<!--Reference the autogenerated SignalR hub script. -->
<script src='signalr/hubs'></script>
<!--Add script to update the page and send messages.-->
<script type='text/javascript'>
$(function () {
// Declare a proxy to reference the hub.
var chat = $.connection.ViewDataHub;
//init the client function
init(chat);
$("#btnclick").click(function () {
//Response the information
$.connection.hub.start().done(function () {
chat.server.hello().done(function (res) {
alert(res);
})//end of done function
})//the end of the $.connection
})//end of click function
$("#btntalk").click(function () {
$.connection.hub.start().done(function () {
chat.server.sendMessag($("#txttalk").val());
$("#txttalk").val("");
})//the end of the $.connection
});//btntalk end
})
//init the client method
function init(chat) {
chat.client.talk = function (message) {
var talk = "<h1>" + message + "</h1>";
$("#dvtalk").append(talk);
} //end regist the client function
} //end of the initfunction
</script>
</head>
<body>
<div>
<table id="tbtoday"></table>
<input type="text" id="txttalk" width="150"/>
<input type="button" id="btnclick" value="clickme" />
<input type="button" id="btntalk" value="talkwithme" />
<div id="dvtalk">
</div>
</div>
</body>
</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:
客户端A发送信息->服务端接收->服务端Post消息给客户端B
那我们重新拆分以上的方法来证明我们的猜想是否正确
$("#btntalk").click(function () {
$.connection.hub.start().done(function () {
chat.server.sendMessag($("#txttalk").val());
$("#txttalk").val("");
})//the end of the $.connection
});//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。
更多学习资料：www.javarecord.com