.NET Core (2.1) Web API 控制器接受请求 url 中的所有内容作为参数 [英] .NET Core (2.1) web API controller accepting all that follows within the request url as parameter

问题描述

我有一个 .NET Core 2.1 Web API 控制器(在下面的 TestController 中)，它应该在接收 GET 请求时生成到其他 url 的重定向.

What I have is a .NET Core 2.1 web API controller (in the following the TestController) that should generate redirects to other urls when receiving GET requests.

示例:

控制器调用如下:http://localhost/api/v1/Test/somedir/somesubdir/filename.extension

它应该返回一个重定向到 https://example-domain.com/somedir/somesubdir/filename.extension

and it should return a redirect to https://example-domain.com/somedir/somesubdir/filename.extension

我针对这个问题的示例控制器如下所示:

My example controller for this question looks like:

  [Authorize]
  [Route("api/v1/[controller]")]
  public class TestController : ControllerBase
  {
    [HttpGet("{path}")]
    public async Task<IActionResult> Get(string path)
    {
      //path e.g. is somedir/somesubdir/filename.extension
      string prefix = "https://example-domain.com/api/v1/Other/";
      //string path2 = HttpContext.Request.Path.Value.Replace("/api/v1/Test/", "/api/v1/Other/").Replace("%2F", "/");
      return Redirect(prefix + path);
    }
  }

我没有让路由正常工作.如果我使用 Swagger 调用该方法，它会被调用(斜线被 %2F 替换)，但至少它会被调用.如果我通过邮递员 .NET Core 调用控制器，只会返回 404 Not Found.

I don't get the routing to work. If I call the method with Swagger it get's called (with the slashes replaced by %2F) but at least it gets called. If I call the controller via postman .NET Core just returns 404 Not Found.

我不一定需要 HttpGet("{path}").我知道我可以像分配 path2 变量一样获取路径.

I do not necessarily need the HttpGet("{path}"). I know that I could get the path like I assigned the path2 variable.

任何提示我如何才能正确路由?

Any hints how I could get the routing right?

另一种可能的解决方案:

Another possible solution:

正如 John 和 Kirk Larkin 在评论中所指出的，我正在寻找的是一个包罗万象的路由，用somedir/somesubdir/filename.extension"填充路径参数，与之后的路径长度无关.

As pointed out by John and Kirk Larkin in the comments what I was looking for is a catch-all route filling the path argument with "somedir/somesubdir/filename.extension" independent how long the path afterwards is.

只需在变量名前加一个星号即可.

Just an asterisk in front of the variable name does the trick.

[HttpGet("{*path}")]

[HttpGet("{*path}")]

推荐答案

你不需要把 "api/v1/Test" 考虑在内，正如你的代码注释所建议的，它已经被过滤了通过控制器级别的 [Route] 属性输出.

You don't need to take "api/v1/Test" into account as your code comments suggest, it is already filtered out by the [Route] attribute on the Controller level.

对于接下来的路径，您可以使用{*path}:

For the rest of the path that follows you can use {*path}:

[HttpGet("{*path}")]
public async Task<IActionResult> Get(string path)
{
    const string prefix = "https://example-domain.com/api/v1/Other/";
    return Redirect(prefix + path);
}

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