How deeply does ASP.NET Core in Action, 3e cover MapControllers?

Explains endpoint registration and request matching, but does not descend into routing internals.

MapControllers

As explained in ASP.NET Core in Action, 3e

MapControllers is an ASP.NET Core endpoint-mapping method that exposes attribute-routed controller actions as endpoints.

MapControllers exposes attribute-routed web API controller actions as endpoints. It lets routing match incoming URLs to action methods, while each action can receive requests and return an HTTP response. section 20.1

Mapping a simple API controller

A web API template registers controllers with AddControllers(), then calls app.MapControllers(). A FruitController action marked [HttpGet("fruit")] responds to GET /fruit, returning its string collection as JSON.

How ASP.NET Core in Action, 3e covers it

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Related concepts

routingproduces · Routing is the selection of a path, destination, or processing component to direct an item, request, or flow toward an intended endpoint.
mvc frameworkconfigures · A web application framework based on the Model–View–Controller architectural pattern, in which application concerns are separated into models, views, and controllers.
endpointconfigures · An endpoint is a network-accessible address or interface through which a service exposes a resource or operation and handles requests and responses.
MapControllerRoutecontrasts with · MapControllerRoute is an ASP.NET Core endpoint-mapping method that registers a conventional route for MVC controller endpoints.

This explainer was generated by Manning's knowledge graph from the text of ASP.NET Core in Action, 3e. The section links point to the parts of the book it draws on.