IIS URL Rewrite 2.0,url重写，伪静态

IIS URL Rewrite 2.0出来好像不短时间了，由于也没什么特别需求，也就没对他有研究兴趣。

最近维护另外一个小组开放的程序，发现其使用的就是IIS URL Rewrite 2.0了，而起rewrite规则都写在webconfig中，这就不由得我不管这事了。

曾经为了避免频繁修改webconfig而导致的站点重启，重写了MS提供的IIS URL Rewrite 1.1，讲规则存储在单独的数据文件中，再用个文件缓存依赖来实现实时修改。

而如今2.0的配置还写在webconfig里头，难道又想让我重新2.0的东东。

找到了2.0的相关资料，也找到了其源代码，发现其是支持扩展的，支持规则存于其他数据文件的。

http://www.iis.net/download/URLRewrite 详细信息参考官方文档了。

这里列下2.0的特点：

Features

Rules-based URL rewriting engine
Rules-based response rewriting engine
Support for custom .NET rewrite providers
Regular expression pattern matching
Wildcard pattern matching
Global and distributed rewrite rules
Rewriting within the content of specific HTML tags
Pre-conditions for outbound rules
Access to server variables and HTTP headers
Rewriting of server variables and HTTP request headers
Rewriting of HTTP response headers
Allow list for server variables
HtmlEncode function
Built-in rule templates
Reverse proxy rule template
Rule templates for Search Engine Optimization
Various rule actions including redirect and request abort
Tracking capture groups across rule conditions
Logging of rewritten URLs
Updated user interface in IIS Manager
Integrated user interface for managing rewrite rules and rewrite maps
Integrated user interface for importing of Apache mod_rewrite rules
Integrated user interface for testing regular expression and wildcard patterns
Support for IIS kernel-mode and user-mode output caching
Lowercase conversion function
Rewrite maps to generate the substitution URL during rewriting
Failed Request Tracing support

好处多多，可以了解下，有些方面估计还用得到。

Support for custom .NET rewrite providers
这玩意支持让你方便修改存储位置。