Spring MVC

Question 1

What is Spring MVC?

Answer 1

A web framework in Spring for building web applications using the Model-View-Controller architecture.

Question 2

What annotation is used to define a controller in Spring MVC?

Answer 2

@Controller.

Question 3

What is the use of the @RequestMapping annotation?

Answer 3

It maps HTTP requests to handler methods in controllers.

Question 4

How do you return JSON data from a Spring MVC controller?

Answer 4

By using @RestController or adding @ResponseBody to methods returning JSON.

Question 5

What is @RestController in Spring MVC?

Answer 5

It combines @Controller and @ResponseBody for RESTful web services.

Question 6

How can you handle form data in Spring MVC?

Answer 6

Using @ModelAttribute or @RequestParam in the controller methods.

Question 7

What is the difference between @RequestParam and @PathVariable?

Answer 7

@RequestParam extracts query parameters, while @PathVariable extracts values from the URI path.

Question 8

What is a ViewResolver in Spring MVC?

Answer 8

A component that resolves logical view names to actual view implementations, like JSP or Thymeleaf.

Question 9

How do you handle exceptions in Spring MVC?

Answer 9

Using @ExceptionHandler in a controller or a global exception handler with @ControllerAdvice.

Question 10

What is the DispatcherServlet in Spring MVC?

Answer 10

The front controller in Spring MVC that handles all incoming web requests and delegates them to the appropriate controllers.