我认为这对您有用，搜索模式有可选的www和重定向使用后向引用C：2，规则有条件只对非https运行。

I think this will work for you, the search pattern has the optional www and redirects using the back reference C:2, the rule has a condition to only run against non https.

这是模式：

"^(www\.)?(.*)$"

其中：

{C:0} - www.domain.de
{C:1} - www.
{C:2} - domain.de

这是完整的规则：

  <rewrite>
    <rules>
      <rule name="SecureRedirect" stopProcessing="true">
        <match url="^(.*)$" />
        <conditions>
          <add input="{HTTPS}" pattern="off" />
          <add input="{HTTP_HOST}" pattern="^(www\.)?(.*)$" />
        </conditions>
        <action type="Redirect" url="https://{C:2}" redirectType="Permanent" />
      </rule>
    </rules>
  </rewrite>