XMLHttpRequest IHttpHandler

Code
 1    function UserIn()
 2    {
 3        var user="";
 4        var id="";
 5         user='<%=Session["UserId"] %>';
 6         id='<%=commId %>';
 7        var request=new XMLHttpRequest();
 8        request.open("POST", "http://www.cnblogs.com/Handler_OutIn.ashx", true);
 9        request.setRequestHeader("Content-Type","application/x-www-form-urlencoded;");  //用POST的时候一定要有这句,设置编码方式，以防乱码。
10        request.send("userId="+user+"&id="+id+"&type=in&title=&url=");
11        
12        request.onreadystatechange = function() 
13        {  
14            if (request.readyState == 4) {  
15                alert(request.responseText);
16            }
17        }
18        
19    }
20    
21    function UserOut()
22    {
23        if(confirm('要搬入新家吗？'))
24        {
25            
26        
27        var user="";
28        var id="";
29         user='<%=Session["UserId"] %>';
30         id='<%=commId %>';
31        var request=new XMLHttpRequest();
32        request.open("POST", "http://www.cnblogs.com/Handler_OutIn.ashx", true);
33        request.setRequestHeader("Content-Type","application/x-www-form-urlencoded;");  //用POST的时候一定要有这句
34        request.send("userId="+user+"&id="+id+"&type=out&title=&url=");
35        
36        request.onreadystatechange = function() 
37        {  
38            if (request.readyState == 4) {  
39                alert(request.responseText);
40            }
41        }
42        
43        }
44    }
45    
46    function MyCollect()
47    {
48        var user="";
49        var title="";
50        var url="";
51        user='<%=Session["UserId"] %>';
52         title=document.title;
53         url=document.URL;
54        var request=new XMLHttpRequest();
55        request.open("POST", "http://www.cnblogs.com/Handler_OutIn.ashx", true);
56        request.setRequestHeader("Content-Type","application/x-www-form-urlencoded;");  //用POST的时候一定要有这句
57        request.send("userId="+user+"&title="+title+"&url="+url+"&type=show&id=");
58        
59        request.onreadystatechange = function() 
60        {  
61            if (request.readyState == 4) {  
62                alert(request.responseText);
63            }
64        }
65        
66        
67    }

Code
 1<%@ WebHandler Language="C#" Class="Handler_OutIn" %>
 2
 3using System;
 4using System.Web;
 5using System.IO;
 6public class Handler_OutIn : IHttpHandler
 7{
 8
 9    public void ProcessRequest(HttpContext context)
10    {
11        context.Response.ContentType = "text/plain";
12        string type = "";
13        string user = "";
14        string commId = "";
15        string title = "";
16        string url = "";
17        try
18        {
19            type = context.Request["type"].ToString();
20            user = context.Request["user"].ToString();
21
22            title = context.Request["title"].ToString();
23            url = context.Request["url"].ToString();
24
25            commId = context.Request["Id"].ToString();
26
27        }
28        catch
29        {
30
31        }
32
33        if (user != null && user != "")
34        {
35            if (type == "in")
36            {
37                if (commDB.IsHasComm(user))
38                {
39                    context.Response.Write("你已经入住," + user + "！");
40                }
41                else
42                {
43
44                    commDB.InComm(user, commId);
45                    context.Response.Write("^_^欢迎入住");
46                }
47            }
48            else if (type == "out")
49            {
50                if (commDB.IsHasComm(user) == false)
51                {
52                    context.Response.Write("抱歉，你还没有入住！");
53                }
54                else
55                {
56                    commDB.OutComm(user);
57                    context.Response.Write("常回家看看");
58                }
59            }
60            else
61            {
62
63                userDB.AddCollect(title, url, user);
64                context.Response.Write("收藏成功");
65
66            }
67        }
68        else
69        {
70            context.Response.Write("请先登录！");
71        }
72
73    }
74    public bool IsReusable
75    {
76        get
77        {
78            return false;
79        }
80    }
81
82}