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C# ASP.NET Core 2.2中的终结点路由无效

c# asp.net-core routing

C# ASP.NET Core 2.2中的终结点路由无效,c#,asp.net-core,routing,asp.net-core-2.2,C#,Asp.net Core,Routing,Asp.net Core 2.2,更新（2） @poke似乎已经弄明白了这一点，如果对其他更高的路由存在明显的模糊性，那么端点路由本身就有利于{*url} 更新（1） @poke评论说我在{*url}路径上有一个输入错误，在那里缺少t-in控制器。修复后，{*url}路由开始工作，DefaultController.Gone操作正在工作 但是现在奇怪的行为又开始出现了。在修复{*url}后，导航到/settings，该设置应与{controller}/{action}路由匹配，但失败并返回到{*url}路由 如果我从注册中删除{

更新（2）

@poke似乎已经弄明白了这一点，如果对其他更高的路由存在明显的模糊性，那么端点路由本身就有利于
{*url}

更新（1）

@poke评论说我在
{*url}
路径上有一个输入错误，在那里缺少t-in控制器。修复后，
{*url}
路由开始工作，
DefaultController.Gone
操作正在工作

但是现在奇怪的行为又开始出现了。在修复
{*url}
后，导航到
/settings
，该设置应与
{controller}/{action}
路由匹配，但失败并返回到
{*url}
路由

如果我从注册中删除
{*url}
路由，那么
/settings
将再次工作。
{action}
路由继续不工作

原创

<h1>TOOLS.DEFAULT</h1>

<!DOCTYPE html>
<html>
<head>
    <title>@ViewBag.Title</title>
</head>
<body>
    <a asp-action="List" asp-controller="Posts">Blog</a>
    <br />
    <a asp-action="Default" asp-controller="Tools">Tools</a>
    <br />
    <a asp-action="About" asp-controller="Default">About</a>
    <br />
    <a asp-action="Default" asp-controller="Settings">Settings</a>
    <br />
    @RenderBody()
</body>
</html>
请原谅问题的长度，但我正试图提供尽可能多的信息

我正在为自己开发一个ASP.NETCore2.2博客应用程序，我在工作中遇到了难以解释的问题。在花了半天时间对着屏幕大喊大叫之后，我决定退一步，开始一个完全孤立的新项目。不知何故，这些问题一直存在于新项目中。我已经把它剥得几乎成了一具饥饿的骷髅，但我仍然无法找到工作的路线。我尝试设置的路线是：

settings/{controller}/{id:int}/{action} - works
settings/{controller}/{action} - works
blog/{*slug} - works
blog/{skip:int?} - works
{controller}/{action} - works
{action} - doesn't work
{*url} - doesn't work
具体来说，我对最后两条路线有问题

{action}
路由没有为像
DefaultController这样的简单操作生成。About
即使它没有约束，它所拥有的只是
PostsController.List的默认值，因为我希望为根URL显示一个帖子列表


{*url}
似乎根本不起作用。我想用它作为我的最后一个备用，它默认为
DefaultController.Gone
，但如果我只是在键盘上猛击一些毫无意义的URL，我得到的只是404错误

我觉得问题出在
DefaultController
上，因为
About
和
Gone
动作都在其中，而且两个动作似乎都不起作用，但我似乎不知道怎么做。它实际上什么也不做，只是渲染视图，就像其他控制器一样

下面是精简项目的代码。如果有人能告诉我失败的地方，我会非常感激，因为我似乎无法理解

Program.cs


public sealed class Program {
    public static async Task Main(
        string[] args) => await WebHost.CreateDefaultBuilder(args)
                                       .UseStartup<Startup>()
                                       .Build()
                                       .RunAsync();
}



public class Startup {
    public void ConfigureServices(
        IServiceCollection services) {
        services.AddMvc()
                .SetCompatibilityVersion(CompatibilityVersion.Latest);
    }

    public void Configure(
        IApplicationBuilder app) {
        app.UseMvc(
            r => {
                //  /settings/{controller}/{id}/{action}
                r.MapRoute("600", "settings/{controller}/{id:int}/{action}", null, new {
                    controller = "Categories|Tags"
                });

                //  /settings/{controller}/{action}
                r.MapRoute("500", "settings/{controller}/{action}", null, new {
                    controller = "Categories|Tags"
                });

                //  /blog/*
                r.MapRoute("400", "blog/{*slug}", new {
                    action = "Show",
                    controller = "Posts"
                });

                //  /blog/{skip}
                r.MapRoute("300", "blog/{skip:int?}", new {
                    action = "List",
                    controller = "Posts"
                });

                //  /{controller}/{action}
                r.MapRoute("200", "{controller}/{action=Default}", null, new {
                    controller = "Settings|Tools"
                });

                //  /{action}
                r.MapRoute("100", "{action}", new {
                    action = "List",
                    controller = "Posts"
                });

                //  /*
                r.MapRoute("-1", "{*url}", new {
                    action = "Gone",
                    conroller = "Default"
                });
            });
    }
}



public sealed class CategoriesController :
    Controller {
    [HttpGet]
    public IActionResult Add() => Content("Category added");

    [HttpGet]
    public IActionResult Remove(
        int id) => Content($"Category {id} removed");
}



public sealed class DefaultController :
    Controller {
    [HttpGet]
    public IActionResult About() => View();

    [HttpGet]
    public IActionResult Gone() => View();
}



public sealed class PostsController :
    Controller {
    [HttpGet]
    public IActionResult List(
        int? skip) => View();

    [HttpGet]
    public IActionResult Show(
        string slug) => View();
}



<h1>POSTS.LIST</h1>
<a asp-action="Show" asp-controller="Posts" asp-route-slug="test-test-test">Show a Post</a>



<h1>POSTS.SHOW</h1>



public sealed class SettingsController :
    Controller {
    [HttpGet]
    public IActionResult Default() => View();
}



<h1>SETTINGS.DEFAULT</h1>
<a asp-action="Add" asp-controller="Categories">Add a Category</a>
<br />
<a asp-action="Remove" asp-controller="Categories" asp-route-id="1">Remove a Category</a>
<hr />
<a asp-action="Add" asp-controller="Tags">Add a Tag</a>
<br />
<a asp-action="Remove" asp-controller="Tags" asp-route-id="1">Remove a Tag</a>



public sealed class TagsController :
    Controller {
    [HttpGet]
    public IActionResult Add() => Content("Tag added");

    [HttpGet]
    public IActionResult Remove(
        int id) => Content($"Tag {id} removed");
}



public sealed class ToolsController :
    Controller {
    [HttpGet]
    public IActionResult Default() => View();
}


CategoriesController.cs


public sealed class Program {
    public static async Task Main(
        string[] args) => await WebHost.CreateDefaultBuilder(args)
                                       .UseStartup<Startup>()
                                       .Build()
                                       .RunAsync();
}



public class Startup {
    public void ConfigureServices(
        IServiceCollection services) {
        services.AddMvc()
                .SetCompatibilityVersion(CompatibilityVersion.Latest);
    }

    public void Configure(
        IApplicationBuilder app) {
        app.UseMvc(
            r => {
                //  /settings/{controller}/{id}/{action}
                r.MapRoute("600", "settings/{controller}/{id:int}/{action}", null, new {
                    controller = "Categories|Tags"
                });

                //  /settings/{controller}/{action}
                r.MapRoute("500", "settings/{controller}/{action}", null, new {
                    controller = "Categories|Tags"
                });

                //  /blog/*
                r.MapRoute("400", "blog/{*slug}", new {
                    action = "Show",
                    controller = "Posts"
                });

                //  /blog/{skip}
                r.MapRoute("300", "blog/{skip:int?}", new {
                    action = "List",
                    controller = "Posts"
                });

                //  /{controller}/{action}
                r.MapRoute("200", "{controller}/{action=Default}", null, new {
                    controller = "Settings|Tools"
                });

                //  /{action}
                r.MapRoute("100", "{action}", new {
                    action = "List",
                    controller = "Posts"
                });

                //  /*
                r.MapRoute("-1", "{*url}", new {
                    action = "Gone",
                    conroller = "Default"
                });
            });
    }
}



public sealed class CategoriesController :
    Controller {
    [HttpGet]
    public IActionResult Add() => Content("Category added");

    [HttpGet]
    public IActionResult Remove(
        int id) => Content($"Category {id} removed");
}



public sealed class DefaultController :
    Controller {
    [HttpGet]
    public IActionResult About() => View();

    [HttpGet]
    public IActionResult Gone() => View();
}



public sealed class PostsController :
    Controller {
    [HttpGet]
    public IActionResult List(
        int? skip) => View();

    [HttpGet]
    public IActionResult Show(
        string slug) => View();
}



<h1>POSTS.LIST</h1>
<a asp-action="Show" asp-controller="Posts" asp-route-slug="test-test-test">Show a Post</a>



<h1>POSTS.SHOW</h1>



public sealed class SettingsController :
    Controller {
    [HttpGet]
    public IActionResult Default() => View();
}



<h1>SETTINGS.DEFAULT</h1>
<a asp-action="Add" asp-controller="Categories">Add a Category</a>
<br />
<a asp-action="Remove" asp-controller="Categories" asp-route-id="1">Remove a Category</a>
<hr />
<a asp-action="Add" asp-controller="Tags">Add a Tag</a>
<br />
<a asp-action="Remove" asp-controller="Tags" asp-route-id="1">Remove a Tag</a>



public sealed class TagsController :
    Controller {
    [HttpGet]
    public IActionResult Add() => Content("Tag added");

    [HttpGet]
    public IActionResult Remove(
        int id) => Content($"Tag {id} removed");
}



public sealed class ToolsController :
    Controller {
    [HttpGet]
    public IActionResult Default() => View();
}


DefaultController.cs


public sealed class Program {
    public static async Task Main(
        string[] args) => await WebHost.CreateDefaultBuilder(args)
                                       .UseStartup<Startup>()
                                       .Build()
                                       .RunAsync();
}



public class Startup {
    public void ConfigureServices(
        IServiceCollection services) {
        services.AddMvc()
                .SetCompatibilityVersion(CompatibilityVersion.Latest);
    }

    public void Configure(
        IApplicationBuilder app) {
        app.UseMvc(
            r => {
                //  /settings/{controller}/{id}/{action}
                r.MapRoute("600", "settings/{controller}/{id:int}/{action}", null, new {
                    controller = "Categories|Tags"
                });

                //  /settings/{controller}/{action}
                r.MapRoute("500", "settings/{controller}/{action}", null, new {
                    controller = "Categories|Tags"
                });

                //  /blog/*
                r.MapRoute("400", "blog/{*slug}", new {
                    action = "Show",
                    controller = "Posts"
                });

                //  /blog/{skip}
                r.MapRoute("300", "blog/{skip:int?}", new {
                    action = "List",
                    controller = "Posts"
                });

                //  /{controller}/{action}
                r.MapRoute("200", "{controller}/{action=Default}", null, new {
                    controller = "Settings|Tools"
                });

                //  /{action}
                r.MapRoute("100", "{action}", new {
                    action = "List",
                    controller = "Posts"
                });

                //  /*
                r.MapRoute("-1", "{*url}", new {
                    action = "Gone",
                    conroller = "Default"
                });
            });
    }
}



public sealed class CategoriesController :
    Controller {
    [HttpGet]
    public IActionResult Add() => Content("Category added");

    [HttpGet]
    public IActionResult Remove(
        int id) => Content($"Category {id} removed");
}



public sealed class DefaultController :
    Controller {
    [HttpGet]
    public IActionResult About() => View();

    [HttpGet]
    public IActionResult Gone() => View();
}



public sealed class PostsController :
    Controller {
    [HttpGet]
    public IActionResult List(
        int? skip) => View();

    [HttpGet]
    public IActionResult Show(
        string slug) => View();
}



<h1>POSTS.LIST</h1>
<a asp-action="Show" asp-controller="Posts" asp-route-slug="test-test-test">Show a Post</a>



<h1>POSTS.SHOW</h1>



public sealed class SettingsController :
    Controller {
    [HttpGet]
    public IActionResult Default() => View();
}



<h1>SETTINGS.DEFAULT</h1>
<a asp-action="Add" asp-controller="Categories">Add a Category</a>
<br />
<a asp-action="Remove" asp-controller="Categories" asp-route-id="1">Remove a Category</a>
<hr />
<a asp-action="Add" asp-controller="Tags">Add a Tag</a>
<br />
<a asp-action="Remove" asp-controller="Tags" asp-route-id="1">Remove a Tag</a>



public sealed class TagsController :
    Controller {
    [HttpGet]
    public IActionResult Add() => Content("Tag added");

    [HttpGet]
    public IActionResult Remove(
        int id) => Content($"Tag {id} removed");
}



public sealed class ToolsController :
    Controller {
    [HttpGet]
    public IActionResult Default() => View();
}


About.cshtml（默认）

List.cshtml（Posts）

Default.cshtml（设置）

ToolsController.cs


public sealed class Program {
    public static async Task Main(
        string[] args) => await WebHost.CreateDefaultBuilder(args)
                                       .UseStartup<Startup>()
                                       .Build()
                                       .RunAsync();
}



public class Startup {
    public void ConfigureServices(
        IServiceCollection services) {
        services.AddMvc()
                .SetCompatibilityVersion(CompatibilityVersion.Latest);
    }

    public void Configure(
        IApplicationBuilder app) {
        app.UseMvc(
            r => {
                //  /settings/{controller}/{id}/{action}
                r.MapRoute("600", "settings/{controller}/{id:int}/{action}", null, new {
                    controller = "Categories|Tags"
                });

                //  /settings/{controller}/{action}
                r.MapRoute("500", "settings/{controller}/{action}", null, new {
                    controller = "Categories|Tags"
                });

                //  /blog/*
                r.MapRoute("400", "blog/{*slug}", new {
                    action = "Show",
                    controller = "Posts"
                });

                //  /blog/{skip}
                r.MapRoute("300", "blog/{skip:int?}", new {
                    action = "List",
                    controller = "Posts"
                });

                //  /{controller}/{action}
                r.MapRoute("200", "{controller}/{action=Default}", null, new {
                    controller = "Settings|Tools"
                });

                //  /{action}
                r.MapRoute("100", "{action}", new {
                    action = "List",
                    controller = "Posts"
                });

                //  /*
                r.MapRoute("-1", "{*url}", new {
                    action = "Gone",
                    conroller = "Default"
                });
            });
    }
}



public sealed class CategoriesController :
    Controller {
    [HttpGet]
    public IActionResult Add() => Content("Category added");

    [HttpGet]
    public IActionResult Remove(
        int id) => Content($"Category {id} removed");
}



public sealed class DefaultController :
    Controller {
    [HttpGet]
    public IActionResult About() => View();

    [HttpGet]
    public IActionResult Gone() => View();
}



public sealed class PostsController :
    Controller {
    [HttpGet]
    public IActionResult List(
        int? skip) => View();

    [HttpGet]
    public IActionResult Show(
        string slug) => View();
}



<h1>POSTS.LIST</h1>
<a asp-action="Show" asp-controller="Posts" asp-route-slug="test-test-test">Show a Post</a>



<h1>POSTS.SHOW</h1>



public sealed class SettingsController :
    Controller {
    [HttpGet]
    public IActionResult Default() => View();
}



<h1>SETTINGS.DEFAULT</h1>
<a asp-action="Add" asp-controller="Categories">Add a Category</a>
<br />
<a asp-action="Remove" asp-controller="Categories" asp-route-id="1">Remove a Category</a>
<hr />
<a asp-action="Add" asp-controller="Tags">Add a Tag</a>
<br />
<a asp-action="Remove" asp-controller="Tags" asp-route-id="1">Remove a Tag</a>



public sealed class TagsController :
    Controller {
    [HttpGet]
    public IActionResult Add() => Content("Tag added");

    [HttpGet]
    public IActionResult Remove(
        int id) => Content($"Tag {id} removed");
}



public sealed class ToolsController :
    Controller {
    [HttpGet]
    public IActionResult Default() => View();
}


Default.cshtml


<h1>TOOLS.DEFAULT</h1>



<!DOCTYPE html>
<html>
<head>
    <title>@ViewBag.Title</title>
</head>
<body>
    <a asp-action="List" asp-controller="Posts">Blog</a>
    <br />
    <a asp-action="Default" asp-controller="Tools">Tools</a>
    <br />
    <a asp-action="About" asp-controller="Default">About</a>
    <br />
    <a asp-action="Default" asp-controller="Settings">Settings</a>
    <br />
    @RenderBody()
</body>
</html>



TOOLS.DEFAULT


\u Layout.cshtml


<h1>TOOLS.DEFAULT</h1>



<!DOCTYPE html>
<html>
<head>
    <title>@ViewBag.Title</title>
</head>
<body>
    <a asp-action="List" asp-controller="Posts">Blog</a>
    <br />
    <a asp-action="Default" asp-controller="Tools">Tools</a>
    <br />
    <a asp-action="About" asp-controller="Default">About</a>
    <br />
    <a asp-action="Default" asp-controller="Settings">Settings</a>
    <br />
    @RenderBody()
</body>
</html>




@视图包。标题
博客


工具


关于


设置


@RenderBody（）



{action}
-不起作用

这一个不起作用，因为它必须与实际行动相匹配。因此，它适用于
/Show
或
/List
，因为您正在
PostsController
上操作。它也适用于
/
，因为
操作
默认为
列表


{*url}
-不起作用

如果您设置默认的
控制器
，而不是
控制器
，则此选项将起作用：


r.MapRoute("-1", "{*url}", new
{
    action = "Gone",
    controller = "Default"
});



并报告了我的发现。也许有一个简单的解决办法


一个简单的解决方法是将
settings/{controller}/{action}
路由模板更改为使用
settings
以外的前缀，以便不再存在歧义。这似乎解决了问题。
conroller=“Default”
–有一个打字错误，缺少
t
。这能解决问题吗@poke，谢谢，它修复了
{*url}
路由，但是
{action}
路由仍然没有生成。奇怪的是，本应与
{controller}/{action}
路由匹配的
/settings
现在失败，并返回到
{*url}
路由。如果我从注册中删除
{*url}
路由，那么
/settings
将再次工作。我开始回忆起原始项目中的怪异行为：（我想我开始明白了。自从
{action}
route有一个默认的控制器
Posts
我在标记帮助器中指定控制器并不重要，因为即使我想要
default.About
，生成的路由将是
Posts.About
，并且由于操作不存在，链接为空。添加属性修复了这一点，因此我会让步。这尽管如此，
{*url}
导航到
/settings
还是一个令人困惑的问题。我决定删除
{action}
路由注册，并为
“
和
博客”添加了一个属性
在
PostsController.List
action上，它包括根URL和
/blog
URL。我仍然不明白为什么
/settings
路由到
{*URL}
路由，而
{controller}/{action}
路由应该首先基于约束（和注册顺序）匹配。它适用于
/tools
。删除
{*url}
路由将修复
/settings
。是否可以猜测其为何会出现这种行为？“即使我想要默认值。关于，生成的路由将是Posts.About”–这并不完全正确。路由的工作方式是，它为前面的所有端点生成URL，因此它已经知道使用哪个路由，例如
PostsC