Spring MVC

What is Spring MVC?

Spring MVC is the module of Spring that implements the front controller and MVC design pattern. It provides a decoupled approach to developing web applications.

In Spring MVC, the three components of the MVC architecture, the front controller, view resolver and model are not dependent on each other. All incoming requests are handled by the front controller which is called the DispatcherServlet.

What are the advantages of using Spring MVC?

• Spring MVC is based on interfaces which are independent of each other allowing separation of concerns.
• Because there is no explicit dependency between the interfaces, Spring MVC applications are easily testable.
• The view technology is customizable and switching between JSP, Velocity or Thymeleaf etc. can be done easily.
• Spring MVC supports RESTful web services.

What is the flow of request in the MVC architecture?

The dispatcher servlet is the front controller which receives all requests from the client. It has a mapping of all controllers and maps the incoming request to the appropriate controller.

The controller executes the request and returns a model and view name to the dispatcher servlet. The model contains the results.

The dispatcher servlet uses the view resolver to resolve the name of the view and populates it with results from the model and displays it to the client as a web page.

What are the steps required to create a Spring MVC application?

To create a simple MVC application, we perform the following steps:

• Include the spring-context and spring-webmvc dependencies in the pom.xml file.
• Define the dispatcher servlet in web.xml to handle all requests.
• Configure the controller classes using XML or annotations.
• Create URL mappings in controller classes to handle incoming requests.
• Configure a view resolver.

Is spring-mvc jar included in spring-core?

spring-mvc jar is not a part of spring-core. It needs ...