转载ASP.NET 如何取得 Request URL 的各个部分
我们在开发Web应用程序,时常需要去解析网址(Request.Url)的每个片段,进行一些判断。 例如说 "http://localhost:1897/News/Press/Content.aspx/123?id=1#toc",我们想要取得网址里第一层目录的名字(News)用以判断不同的页面标题(Page Title)。
我看很多人都用字符串的 IndexOf 方法与 Substring 方法:
Request.Url.PathAndQuery.Substring(1, Request.Url.PathAndQuery.IndexOf("/",1)-1)
这实在太埋没 .NET 的强大设计了,事实上在 Request 对象就已经提供很多方便的属性(Property)可供取得网址的片段.
底下这张表就是各种跟 Browser Request 的网址相关的属性与用法:
| URL | http://localhost:1897/News/Press/Content.aspx/123?id=1#toc |
| Request.ApplicationPath | / |
| Request.PhysicalPath | D:\Projects\Solution\web\News\Press\Content.aspx |
| System.IO.Path.GetDirectoryName(Request.PhysicalPath) | D:\Projects\Solution\web\News\Press |
| Request.PhysicalApplicationPath | D:\Projects\Solution\web\ |
| System.IO.Path.GetFileName(Request.PhysicalPath) | Content.aspx |
| Request.CurrentExecutionFilePath | /News/Press/Content.aspx |
| Request.FilePath | /News/Press/Content.aspx |
| Request.Path | /News/Press/Content.aspx/123 |
| Request.RawUrl | /News/Press/Content.aspx/123?id=1 |
| Request.Url.AbsolutePath | /News/Press/Content.aspx/123 |
| Request.Url.AbsoluteUri | http://localhost:1897/News/Press/Content.aspx/123?id=1 |
| Request.Url.Scheme | http |
| Request.Url.Host | localhost |
| Request.Url.Port | 1897 |
| Request.Url.Authority | localhost:1897 |
| Request.Url.LocalPath | /News/Press/Content.aspx/123 |
| Request.PathInfo | /123 |
| Request.Url.PathAndQuery | /News/Press/Content.aspx/123?id=1 |
| Request.Url.Query | ?id=1 |
| Request.Url.Fragment | |
| Request.Url.Segments |
/ News/ Press/ Content.aspx/ 123 |
所以当你看了这张表之后,你还会想用 Request.Url.PathAndQuery.Substring(1, Request.Url.PathAndQuery.IndexOf("/",1)-1) 这种写法吗?
用这样写 Request.Url.Segments[1].Replace("/", "") 不是又短又直觉吗? ^_^
在ASP.NET编程中经常需要用Request获取url的有关信息,Request中有多种方法获取url信息,但我经常忘了各种方法的具体作用,今天我就写了个测试程序,将各种方法得到的结果列出来,以后用时直接参考一下就行了。 测试的url地址是http://www.test.com/testweb/default.aspx, 结果如下:
Request.ApplicationPath: /testweb
Request.ApplicationPath: /testweb
Request.CurrentExecutionFilePath: /testweb/default.aspx
Request.FilePath: /testweb/default.aspx
Request.Path: /testweb/default.aspx
Request.PathInfo:
Request.PhysicalApplicationPath: E:/WWW/testweb/
Request.PhysicalApplicationPath: E:/WWW/testweb/
Request.PhysicalPath: E:/WWW/testweb/default.aspx
Request.RawUrl: /testweb/default.aspx
Request.Url.AbsolutePath: /testweb/default.aspx
Request.Url.AbsoluteUri: http://www.test.com/testweb/default.aspx
Request.Url.Host: www.test.com
Request.Url.LocalPath: /testweb/default.aspx
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