Integer parameter gets default value when passing string in url

Question

I've got a controller action like this:

[HttpGet("test/{value}")]
public object Get(int value)
{
    return new {value};
}

When I make a request to http://localhost:53615/test/asdf I was expecting the action to not be invoked and instead get a 404 response. But instead it is invoked with 0 as value.

Is there any way to get the behaviour I'm expecting?

Answer 1

如果找不到匹配项，则对参数的约束将导致返回404：

[HttpGet("test/{value:int")]