咖啡好苦，如同生活

刚喝了一口咖啡，真苦！
就像生活一样，连心都是苦的。虽然有人说咖啡很不错，可那只是对于适合他的人来说。
在一个地方呆久了，心里也会像咖啡一样苦。

把我今天上午学习的结果粘出来。
aspx页：(其cs页面无任何代码）
 1<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Sys_WebRequest.aspx.cs" Inherits="Sys_WebRequest" %>
 2
 3<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 4
 5<html xmlns="http://www.w3.org/1999/xhtml" >
 6<head runat="server">
 7    <title>无标题页</title>
 8</head>
 9<body>
10    <form id="form1" runat="server">
11    <div>
12        <asp:ScriptManager ID="ScriptManager1" runat="server">
13        </asp:ScriptManager>
14        
15        <asp:UpdatePanel ID="UpdatePanel1" runat="server">
16            <ContentTemplate>
17                <%=DateTime.Now %>
18                <br />
19                <asp:TextBox TextMode="multiLine" ID="txtContent" Rows="5" Columns="4" runat="server" />
20                <asp:Button ID="Button1" runat="server" Text="Refresh" />
21            </ContentTemplate>
22        </asp:UpdatePanel>
23        
24        <input type="button" onclick="sendRequest('normal');" value="Normal" />
25        <input type="button" onclick="sendRequest('error');" value="Error" />
26        <input type="button" onclick="sendRequest('timeout');" value="TimeOut" />
27        <input type="button" onclick="try{webRequest.get_executor().abort();}catch(e){alert(e.message+'\n请先单击timeout按钮，并在3秒钟内单击此按钮');}" value="abort" />
28        
29        <script type="text/javascript" language="javascript">
30            
31            var webRequest;
32            function sendRequest(action)
33            {
34                    webRequest = new Sys.Net.WebRequest();
35                    webRequest.set_url("handlers/handler.ashx");
36                    
37                    //设置头信息
38                    webRequest.get_headers()["action"]=action;
39                    
40                    //设置body信息
41                    webRequest.set_body("data=" + encodeURIComponent($get("txtContent").innerHTML));
42                    webRequest.set_httpVerb("POST");
43                    webRequest.set_timeout(3000);
44                    
45                    webRequest.add_completed(OnCompleted);
46                    webRequest.invoke();
47            }
48            
49            function OnCompleted(executor,e)
50            {
51                if(executor.get_aborted())
52                {
53                    alert("Request Aborted!");
54                }
55                else if(executor.get_responseAvailable())
56                {
57                    var statusCode=executor.get_statusCode();
58                    alert("statusCode=" + statusCode);
59                    if(statusCode < 200|| statusCode >= 300)
60                    {
61                        alert("Error Occured!");
62                    }
63                    else
64                    {
65                        alert(executor.get_responseData());
66                    }
67                }
68                else if(executor.get_timedOut())
69                {
70                   alert("Time Out!");
71                }
72                else
73                {
74                    alert("error occured!");    
75                }
76            }
77            
78            function pageLoad()
79            {
80                Sys.WebForms.PageRequestManager.getInstance().add_endRequest(OnRequestEnd);
81            }
82            function OnRequestEnd(sender,e)
83            {
84                if(e.get_error())
85                {
86                    e.set_errorHandled(true);
87                    alert(e.get_error().message);
88                }
89                else if(e.get_response().get_aborted())
90                {
91                }
92            }
93        </script>
94    </div>
95    </form>
96</body>
97</html>
98


Handler.ashx页：
 1<%@ WebHandler Language="C#" Class="Handler" %>
 2
 3using System;
 4using System.Web;
 5
 6public class Handler : IHttpHandler {
 7    
 8    public void ProcessRequest (HttpContext context) {
 9        context.Response.ContentType = "text/plain";
10        string action = context.Request.Headers["action"].ToString();
11
12        switch (action)
13        {
14            case "error":
15                throw new Exception();
16                break;
17            case "normal":
18                //for (int i = 0; i < context.Request.ServerVariables.Count; i++)
19                //{
20                //    context.Response.Write(context.Request.ServerVariables.Keys[i] + "=" + context.Request.ServerVariables[i].ToString() + "\n");
21                //}
22                context.Response.Write("发送请求的网页URL:" + context.Request.ServerVariables["HTTP_REFERER"]);
23                context.Response.Write("\n发送过来的数据是：" + context.Request.Form["data"].ToString());
24                break;
25            case "timeout":
26                System.Threading.Thread.Sleep(5000);
27                break;
28            default:
29                context.Response.Write("非法的请求！");
30                break;
31        }
32    }
33 
34    public bool IsReusable {
35        get {
36            return false;
37        }
38    }
39
40}
posted on 2007-09-23 17:59  是谁啊？  阅读(302)  评论(0)    收藏  举报