Will DispatcherServlet find a controller with the @Controller annotation when processing a request?

Yes, DispatcherServlet in Spring MVC, when processing an HTTP request, looks for controllers annotated with @Controller. DispatcherServlet acts as a front controller that receives the request, determines the appropriate controller method based on the URL and HTTP method, and then invokes that method to handle the request.

The @Controller annotation indicates that the class is a Spring MVC component that handles web requests. DispatcherServlet uses Spring mechanisms to scan and register such controllers at application startup.

Example of a controller:

@Controller
public class MyController {
    @GetMapping("/hello")
    public String sayHello() {
        return "hello"; // view name
    }
}

When a request is made to /hello, DispatcherServlet will find the sayHello method and invoke it.