.Net Core url 重写的查询字符串问题

Question

在 ASP.NET Core 中处理应用程序时我在尝试重写单个 url 时遇到问题，例如： https://localhost:44318/Details?content=My-url-to-rewrite&id=221 进入 https://localhost:44318/mypage

我在 Startup.cs 的 Configure() 方法开头使用的代码如下：

app.UseRewriter(new RewriteOptions()
        .AddRewrite(@"^Details?content=My-url-to-rewrite&id=221", "/mypage", skipRemainingRules: true));

奇怪的是，如果我尝试在没有查询字符串的情况下重写 url，如下所示，它可以工作

app.UseRewriter(new RewriteOptions()
        .AddRewrite(@"^Details", "/mypage", skipRemainingRules: true));

甚至添加问号来附加它的查询字符串，如下所示

app.UseRewriter(new RewriteOptions()
        .AddRewrite(@"^Details?", "/mypage", skipRemainingRules: true));

但是，只要我在问号后添加一个字符，url 就不会被重写，并且页面会像往常一样被链接，没有任何错误。

有什么想法吗？

提前致谢。

Answer 1

您可以实现自己的重写中间件：

Configure：

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{   
    ....
    var options = new RewriteOptions()
                 .Add(RedirectMyRequests);

    app.UseRewriter(options);
    ...
}
static void RedirectMyRequests(RewriteContext context)
{
    var request = context.HttpContext.Request;
    // Because we're redirecting back to the same app, stop processing if the request has already been redirected
    //If the modified path is similar with previous, add if statemetn to stop processing

    //check the request path and request QueryString
    if (request.Path.Value.StartsWith("/Details", StringComparison.OrdinalIgnoreCase) && request.QueryString.Value.StartsWith("?content", StringComparison.OrdinalIgnoreCase))
    {
        if (request.QueryString.Value.Split('&')[1].StartsWith("id", StringComparison.OrdinalIgnoreCase))
        {
            var response = context.HttpContext.Response;
            response.StatusCode = StatusCodes.Status301MovedPermanently;
            context.Result = RuleResult.EndResponse;
            //change it with needed path, it is combined with request path and request QueryString
            response.Headers[HeaderNames.Location] = "/Home/Privacy";
        }

    }
}