Can you explain the main purpose of the Spring Web module within the Spring ecosystem?

Spring Web is a module in the Spring ecosystem that provides infrastructure for developing web applications and RESTful services in Java.

The main purpose of Spring Web:

• To support handling HTTP requests and responses.
• To enable the creation of controllers that connect web requests with business logic.
• To provide convenient mechanisms for routing, parameter handling, validation, and data serialization.
• To integrate with other Spring modules, such as Spring MVC for building MVC applications.

An example of using Spring Web — creating a REST API:

@RestController
public class HelloController {
    @GetMapping("/hello")
    public String sayHello() {
        return "Hello, world!";
    }
}

Here, Spring Web handles the HTTP GET request at the path /hello and returns a string in response.

Thus, Spring Web serves as a foundation for creating modern web applications and services within the Spring Framework.