ASP.NET Core MVC中的URL重写将无法正确使用反向引用 [英] URL rewriting in ASP.NET Core MVC won't use back referencing correctly

问题描述

这是

我想念什么?谢谢.

解决方案

根据源代码，这似乎是内置功能，asp.net核心的appendquerystring属性与IIS的属性不同，它将附加IIS的属性.而不是删除新的查询字符串.

源代码是这样的:

 如果(pattern.IndexOf(Uri.SchemeDelimiter，StringComparison.Ordinal)> = 0){字符串方案HostString主机；PathString路径；QueryString查询；FragmentString片段；UriHelper.FromAbsolute(模式，输出方案，输出主机，输出路径，输出查询，输出片段);如果(query.HasValue){如果(QueryStringAppend){request.QueryString = request.QueryString.Add(query);}别的{request.QueryString =查询；}}否则，如果(QueryStringDelete){request.QueryString = QueryString.Empty;}request.Scheme = scheme;request.Host =主机；request.Path =路径；} 

This is a continuation from Parameter binding to either route or querystring in ASP.NET MVC Core. I have an ASP.NET MVC web site in .NET Core 3.1, and I am trying to URL rewrites to put query string values into the path instead, for example /api/Values?id=1. I have downloaded the sample application from https://github.com/dotnet/AspNetCore.Docs/tree/master/aspnetcore/fundamentals/url-rewriting/samples/ and added my own rule to the IISUrlRewrite.xml file, like so:

<rewrite>
  <rules>
      <rule name="my rule" stopProcessing="true">
          <match url="^api/(\w+)$" />
          <condition>
              <add input="{QUERY_STRING}" pattern="id=([0-9]+)" />
          </condition>
          <action type="Rewrite" url="api/{R:1}/{C:1}" appendQueryString="false"/>
      </rule>
  </rules>
</rewrite>

However, when I run the application and go to /api/Values?id=1, the rewritten URL is /api/Values/?id=1. So we can see that the rule was applied, and {R:1} (the back-reference from the path) was properly applied, but {C:1}, which should be the ID number, is instead the entire query string value.

So I tried changing the rule to be like this:

      <rule name="some other rule" stopProcessing="true">
          <match url="^api/(\w+)$" />
          <condition>
              <add input="{QUERY_STRING}" pattern="id=1" />
          </condition>
          <action type="Rewrite" url="api/{R:1}/1" appendQueryString="false"/>
      </rule>

Doing this made it so that the rewritten URL was api/Values/1?id=1. So it appears that even though the appendQueryString attribute is set to false, the entire query string is still being appended.

What am I missing? Thanks.

解决方案

According to the source codes, it seems this is build-in feature, the asp.net core appendquerystring attribute is not as same as IIS's, it will append the new querystring instead of removing it.

The source codes is like this:

        if (pattern.IndexOf(Uri.SchemeDelimiter, StringComparison.Ordinal) >= 0)
        {
            string scheme;
            HostString host;
            PathString path;
            QueryString query;
            FragmentString fragment;
            UriHelper.FromAbsolute(pattern, out scheme, out host, out path, out query, out fragment);

            if (query.HasValue)
            {
                if (QueryStringAppend)
                {
                    request.QueryString = request.QueryString.Add(query);
                }
                else
                {
                    request.QueryString = query;
                }
            }
            else if (QueryStringDelete)
            {
                request.QueryString = QueryString.Empty;
            }

            request.Scheme = scheme;
            request.Host = host;
            request.Path = path;
        }

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