如何处理 web.config 重写规则中的特殊字符?

How to handle special characters in web.config rewrite rule?

当 URL 包含特殊字符时,我的重写规则出现错误:

这个URLhttp://www.example.com/bungalow/rent/state/texas/street/exloër/exloër 使用此重写规则:

    <rule name="rentals by proptype+state+city+street">
      <match url="^([a-zA-Z0-9-+]+)/rent/state/([a-zA-Z-+]+)/street/([a-zA-Zë-+]+)/([0-9a-zA-Zë-+']+)$" />
      <action type="Rewrite" url="search_new.aspx?proptype={R:1}&amp;state={R:2}&amp;city={R:3}&amp;street={R:4}" />
    </rule>

导致 500 错误

这个URLhttp://www.example.com/bungalow/rent/state/texas/street/exloër/exloër 使用此重写规则:

    <rule name="rentals by proptype+state+city+street">
      <match url="^([a-zA-Z0-9-+]+)/rent/state/([a-zA-Z-+]+)/street/([a-zA-Z-+]+)/([0-9a-zA-Z-+']+)$" />
      <action type="Rewrite" url="search_new.aspx?proptype={R:1}&amp;state={R:2}&amp;city={R:3}&amp;street={R:4}" />
    </rule>

导致 404 错误

如何处理重写规则中的特殊字符?

更新 1

有问题的 URL 显示为 ë 字符,但是当我复制地址时,它被转义为 %c3%abr 使用此规则我仍然会收到 404 错误:

    <rule name="rentals by proptype+state+city+street">
      <match url="^([a-zA-Z0-9-+]+)/rent/state/([a-zA-Z-+]+)/street/([a-zA-Z%-+]+)/([0-9a-zA-Z%-+']+)$" />
      <action type="Rewrite" url="search_new.aspx?proptype={R:1}&amp;state={R:2}&amp;city={R:3}&amp;street={R:4}" />
    </rule>

所以我想真正的问题是,如何处理重写规则中的 % 个字符?

您上次尝试的正则表达式几乎是正确的,您只是犯了一个小错误(忘记在第三个块中添加 0-9)。正确的正则表达式是:

^([a-zA-Z0-9-+]+)/rent/state/([a-zA-Z-+]+)/street/([a-zA-Z0-9%-+]+)/([0-9a-zA-Z%-+']+)$

但是在重写规则中你需要使用变量{UNENCODED_URL}.

工作示例是:

<rule name="rentals by proptype+state+city+street" stopProcessing="true">
    <match url=".*" />
    <conditions>
        <add input="{UNENCODED_URL}" pattern="^/([a-zA-Z0-9-+]+)/rent/state/([a-zA-Z-+]+)/street/([a-zA-Z0-9%-+]+)/([0-9a-zA-Z%-+']+)$" />
    </conditions>
    <action type="Rewrite" url="search_new.aspx?proptype={C:1}&amp;state={C:2}&amp;city={C:3}&amp;street={C:4}" />
</rule>

UPD

根据评论中的示例:

你的url:http://www.example.com/bungalow/rent/state/north-dakota/stre‌​‌​et/savanah/%27s-gr‌​ac‌​eland has some hidden special characters (even SO can't parse it properly). You can check how it's encoded here: https://www.urlencoder.org/

因为我更改了规则中的正则表达式,如下所示:

<rule name="rentals by proptype+state+city+street" stopProcessing="true">
    <match url=".*" />
    <conditions>
        <add input="{UNENCODED_URL}" pattern="^/([a-zA-Z0-9\-+]+)/rent/state/([a-zA-Z\-+]+)/([a-zA-Z0-9%\-+]+)/([a-zA-Z0-9%\-+]+)/([0-9a-zA-Z%\-+']+)$" />
    </conditions>
    <action type="Rewrite" url="search_new.aspx?proptype={C:1}&amp;state={C:2}&amp;city={C:4}&amp;street={C:5}" />
</rule>