在開發ASP.NET MVC web application過程中，開發上線了新系統後，需要把老系統的url redirect新系統下

其中在項目系統目錄下有一個文件 301RedirectsPages.config, 內容如下:

<rewriteMaps>
    <rewriteMap name="Redirects">
           <add key="/contact-us.aspx" value="/contact-us" />
        <add key="/services-solutions" value="/services-and-solutions"
 
 />
        <add key="/sales-support" value="/sales-and-support" />
        <add key="/events-news" value="/events-and-news" />
        <add key="/services-solutions/services.aspx" value="/services-and-solutions/services" />
        <add key="/services-solutions/solutions.aspx" value="/services-and-solutions/solutions"
 
 />
        </rewriteMap>
</rewriteMaps>



在web.config文件中，在system.webServer下面，有一個rewrite節點，顯示如下：

<system.webServer>
    <rewrite  xdt:Transform="Replace">
      <rewriteMaps configSource="301RedirectsPages.config" />
      <rules>
        <rule name="Redirect to HTTPS"
 
 stopProcessing="true">
          <match url="(.*)" />
          <conditions>
            <add input="{HTTPS}" pattern="^OFF$" />
          </conditions>
          <action type="Redirect" url="https://{HTTP_HOST}/{R:1}" />
        </rule>
        <rule name="Remove trailing slash" stopProcessing="true">
          <match url="(.*)/$" />
          <conditions>
            <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
            <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
          </conditions>
          <action type="Redirect" redirectType="Permanent" url="{R:1}" />
        </rule>
        <rule name="Redirects">
          <match url=".*" />
          <conditions>
            <add input="{Redirects:{REQUEST_URI}}" pattern="(.+)" />
          </conditions>
          <action type="Redirect" url="{C:1}" appendQueryString="true" />
        </rule>
      </rules>
    </rewrite>
</system.webServer>

這種情況下，在瀏覽器窗口輸入URL:

localhost/contact-us.aspx 將自動redirect到 localhost/contact-us

localhost/services-solutions/services.aspx 自動redirect到 localhost/services-and-solutions/services

localhost/services-solutions/solutions.aspx 自動redirect到 localhost/services-and-solutions/solutions

但是，當你輸入

localhost/services-solutions 不能自動redirect到 localhost/services-and-solutions

localhost/sales-support 不能自動redirect到 localhost/sales-and-support

localhost/events-news 不能自動redirect到 localhost/events-and-news

查找了半天的原因，才發現是在web.config 中的設置

appendQueryString="true" 應該改成 appendQueryString="false"

也就是這一行 <action type="Redirect" url="{C:1}" appendQueryString="true" />

應該改成 <action type="Redirect" url="{C:1}" appendQueryString="false" />

改成後的web.config文件如下:

 <rewrite  xdt:Transform="Replace">
      <rewriteMaps configSource="301RedirectsPages.config" />
      <rules>
        <rule name="Redirect to HTTPS" stopProcessing="true">
          <match url="(.*)" />
          <conditions>
            <add input="{HTTPS}" pattern="^OFF$" />
          </conditions>
          <action type="Redirect" url="https://{HTTP_HOST}/{R:1}" />
        </rule>
        <rule name="Remove trailing slash" stopProcessing="true">
          <match url="(.*)/$" />
          <conditions>
            <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
            <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
          </conditions>
          <action type="Redirect" redirectType="Permanent" url="{R:1}" />
        </rule>
        <rule name="Redirects">
          <match url=".*" />
          <conditions>
            <add input="{Redirects:{REQUEST_URI}}" pattern="(.+)" />
          </conditions>
          <action type="Redirect" url="{C:1}" appendQueryString="false" />
        </rule>
      </rules>
    </rewrite>

ASP.NET web application中的redirect