原文标题：How Do I Get Paths and URL fragments from the HttpRequest object?
原文地址：http://www.cambiaresearch.com/articles/53/how-do-i-get-paths-and-url-fragments-from-the-httprequest-object
摘要
如果你编写过许多ASP.NET程序，那么你可能花了很多时间将Url映射到物理磁盘上的某个位置。当你需要在服务器上保存文件，或者执行某些URL解析、或者将请求重新路由的时候，你都需要做这些工作。
这篇文章将要解释Request对象的一些属性，这些属性根据应用程序和当前请求来提供路径和url信息。
首先，这里有两张表来展示针对给出的请求路径，Request对象的相关属性的值。
由于某些我也不清楚的原因，Url.Fragment属性通常是空的，而不是包含"#fragment"的值。
请求路径: http://localhost:96/Cambia3/Temp/Test.aspx?q=item#fragment
| Request.ApplicationPath: | /Cambia3 |
| Request.CurrentExecutionFilePath: | /Cambia3/Temp/Test.aspx |
| Request.FilePath: | /Cambia3/Temp/Test.aspx |
| Request.Path: | /Cambia3/Temp/Test.aspx |
| Request.PathInfo: | |
| Request.PhysicalApplicationPath: | D:\Inetpub\wwwroot\CambiaWeb\Cambia3\ |
| Request.RawUrl: | /Cambia3/Temp/Test.aspx?query=arg |
| Request.Url.AbsolutePath: | /Cambia3/Temp/Test.aspx |
| Request.Url.AbsoluteUri: | http://localhost:96/Cambia3/Temp/Test.aspx?query=arg |
| Request.Url.Fragment: | |
| Request.Url.Host: | localhost |
| Request.Url.Authority: | localhost:96 |
| Request.Url.LocalPath: | /Cambia3/Temp/Test.aspx |
| Request.Url.PathAndQuery: | /Cambia3/Temp/Test.aspx?query=arg |
| Request.Url.Port: | 96 |
| Request.Url.Query: | ?query=arg |
| Request.Url.Scheme: | http |
| Request.Url.Segments: | / Cambia3/ Temp/ Test.aspx |
请求的路径: http://localhost:96/Cambia3/Temp/Test.aspx/path/info?q=item#fragment
| Request.ApplicationPath: | /Cambia3 |
| Request.CurrentExecutionFilePath: | /Cambia3/Temp/Test.aspx |
| Request.FilePath: | /Cambia3/Temp/Test.aspx |
| Request.Path: | /Cambia3/Temp/Test.aspx/path/info |
| Request.PathInfo: | /path/info |
| Request.PhysicalApplicationPath: | D:\Inetpub\wwwroot\CambiaWeb\Cambia3\ |
| Request.RawUrl: | /Cambia3/Temp/Test.aspx/path/info?query=arg |
| Request.Url.AbsolutePath: | /Cambia3/Temp/Test.aspx/path/info |
| Request.Url.AbsoluteUri: | http://localhost:96/Cambia3/Temp/Test.aspx/path/info?query=arg |
| Request.Url.Fragment: | |
| Request.Url.Host: | localhost |
| Request.Url.LocalPath: | /Cambia3/Temp/Test.aspx/path/info |
| Request.Url.PathAndQuery: | /Cambia3/Temp/Test.aspx/path/info?query=arg |
| Request.Url.Port: | 96 |
| Request.Url.Query: | ?query=arg |
| Request.Url.Scheme: | http |
| Request.Url.Segments: | / Cambia3/ Temp/ Test.aspx/ path/ info |
下面是我用C#写的一个方法，用来处理URL并且生成表格。你需要在aspx页面中加入一个ID为"lblOutput"的Label控件，然后使用这个方法。
1 private void DisplayRequestObjectProperties()
2 {
3 lblOutput.Text = "<table cellpadding=2 border=1>";
4
5 lblOutput.Text += "<tr><td colspan=2 align=center>";
6 lblOutput.Text += "Some HttpRequest path and ULR properties:";
7 lblOutput.Text += "</td></tr>";
8
9 // application path
10 lblOutput.Text += "<tr><td>";
11 lblOutput.Text += "Request.ApplicationPath:";
12 lblOutput.Text += "</td><td>";
13 lblOutput.Text += "<b>" + Request.ApplicationPath + "</b>";
14 lblOutput.Text += "</td></tr>";
15
16 // current execution file path
17 lblOutput.Text += "<tr><td>";
18 lblOutput.Text += "Request.CurrentExecutionFilePath:";
19 lblOutput.Text += "</td><td>";
20 lblOutput.Text += "<b>" + Request.CurrentExecutionFilePath + "</b>";
21 lblOutput.Text += "</td></tr>";
22
23 // file path
24 lblOutput.Text += "<tr><td>";
25 lblOutput.Text += "Request.FilePath:";
26 lblOutput.Text += "</td><td>";
27 lblOutput.Text += "<b>" + Request.FilePath + "</b>";
28 lblOutput.Text += "</td></tr>";
29
30 // path
31 lblOutput.Text += "<tr><td>";
32 lblOutput.Text += "Request.Path:";
33 lblOutput.Text += "</td><td>";
34 lblOutput.Text += "<b>" + Request.Path + "</b>";
35 lblOutput.Text += "</td></tr>";
36
37 // path info
38 lblOutput.Text += "<tr><td>";
39 lblOutput.Text += "Request.PathInfo:";
40 lblOutput.Text += "</td><td>";
41 lblOutput.Text += "<b>" + Request.PathInfo + "</b>";
42 lblOutput.Text += "</td></tr>";
43
44 // physical application path
45 lblOutput.Text += "<tr><td>";
46 lblOutput.Text += "Request.PhysicalApplicationPath:";
47 lblOutput.Text += "</td><td>";
48 lblOutput.Text += "<b>" + Request.PhysicalApplicationPath + "</b>";
49 lblOutput.Text += "</td></tr>";
50
51 // raw url
52 lblOutput.Text += "<tr><td>";
53 lblOutput.Text += "Request.RawUrl:";
54 lblOutput.Text += "</td><td>";
55 lblOutput.Text += "<b>" + Request.RawUrl + "</b>";
56 lblOutput.Text += "</td></tr>";
57
58 // absolute path
59 lblOutput.Text += "<tr><td>";
60 lblOutput.Text += "Request.Url.AbsolutePath:";
61 lblOutput.Text += "</td><td>";
62 lblOutput.Text += "<b>" + Request.Url.AbsolutePath + "</b>";
63 lblOutput.Text += "</td></tr>";
64
65 // absolute uri
66 lblOutput.Text += "<tr><td>";
67 lblOutput.Text += "Request.Url.AbsoluteUri:";
68 lblOutput.Text += "</td><td>";
69 lblOutput.Text += "<b>" + Request.Url.AbsoluteUri + "</b>";
70 lblOutput.Text += "</td></tr>";
71
72 // fragment
73 lblOutput.Text += "<tr><td>";
74 lblOutput.Text += "Request.Url.Fragment:";
75 lblOutput.Text += "</td><td>";
76 lblOutput.Text += "<b>" + Request.Url.Fragment + "</b>";
77 lblOutput.Text += "</td></tr>";
78
79 // host
80 lblOutput.Text += "<tr><td>";
81 lblOutput.Text += "Request.Url.Host:";
82 lblOutput.Text += "</td><td>";
83 lblOutput.Text += "<b>" + Request.Url.Host + "</b>";
84 lblOutput.Text += "</td></tr>";
85
86 // authority
87 lblOutput.Text += "<tr><td>";
88 lblOutput.Text += "Request.Url.Authority:";
89 lblOutput.Text += "</td><td>";
90 lblOutput.Text += "<b>" + Request.Url.Authority + "</b>";
91 lblOutput.Text += "</td></tr>";
92
93 // local path
94 lblOutput.Text += "<tr><td>";
95 lblOutput.Text += "Request.Url.LocalPath:";
96 lblOutput.Text += "</td><td>";
97 lblOutput.Text += "<b>" + Request.Url.LocalPath + "</b>";
98 lblOutput.Text += "</td></tr>";
99
100 // path and query
101 lblOutput.Text += "<tr><td>";
102 lblOutput.Text += "Request.Url.PathAndQuery:";
103 lblOutput.Text += "</td><td>";
104 lblOutput.Text += "<b>" + Request.Url.PathAndQuery + "</b>";
105 lblOutput.Text += "</td></tr>";
106
107 // port
108 lblOutput.Text += "<tr><td>";
109 lblOutput.Text += "Request.Url.Port:";
110 lblOutput.Text += "</td><td>";
111 lblOutput.Text += "<b>" + Request.Url.Port + "</b>";
112 lblOutput.Text += "</td></tr>";
113
114 // query
115 lblOutput.Text += "<tr><td>";
116 lblOutput.Text += "Request.Url.Query:";
117 lblOutput.Text += "</td><td>";
118 lblOutput.Text += "<b>" + Request.Url.Query + "</b>";
119 lblOutput.Text += "</td></tr>";
120
121 // scheme
122 lblOutput.Text += "<tr><td>";
123 lblOutput.Text += "Request.Url.Scheme:";
124 lblOutput.Text += "</td><td>";
125 lblOutput.Text += "<b>" + Request.Url.Scheme + "</b>";
126 lblOutput.Text += "</td></tr>";
127
128 // segments
129 lblOutput.Text += "<tr><td>";
130 lblOutput.Text += "Request.Url.Segments:";
131 lblOutput.Text += "</td><td>";
132 string[] segments = Request.Url.Segments;
133 foreach (string s in segments)
134 lblOutput.Text += "<b>" + s + "</b><br>";
135 lblOutput.Text += "</td></tr>";
136
137 lblOutput.Text += "</table>";
138 }