如何通过HttpRequest对象获取路径和URL片段？

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 }

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原文地址：https://www.cnblogs.com/mopno1/p/2332026.html