What does Spring MVC mean?

Spring MVC is a Java-based Web application development framework. It is part of the Spring framework and provides an architectural pattern of models, views, and controllers for building flexible, scalable, and efficient web application. The core components of Spring MVC include DispatcherServlet, HandlerMapping, Handler, ViewResolver and View, etc.

Spring MVC is a Java-based web application development framework that is part of the Spring framework. Spring MVC provides a Model-View-Controller (MVC) architectural pattern for building flexible, scalable and efficient web applications.

In Spring MVC, the model represents the data and business logic of the application. View is responsible for displaying data to the user and accepting user input. The Controller handles user requests and coordinates the interaction between the model and the view. This separated architectural pattern makes the organization and maintenance of code clearer and more controllable.

The core components of Spring MVC include:

1. DispatcherServlet: DispatcherServlet is the front-end controller of Spring MVC. It receives all HTTP requests and distributes the requests to the corresponding processor (Handler ) for processing. DispatcherServlet is also responsible for coordinating the interaction between processors, models, and views.

2. HandlerMapping: HandlerMapping is responsible for mapping requests to the corresponding processor. It determines the processor to execute based on the requested URL and other conditions and returns it to the DispatcherServlet.

3. Handler: Handler is the component that actually handles the request. It can be a Controller class or a method that handles requests. The Handler performs the required business logic and returns a ModelAndView object containing the data to be displayed in the view and the name of the view.

4. ViewResolver: ViewResolver is responsible for resolving logical view names into actual view objects. It finds and returns a specific view implementation based on the view name, such as JSP, Thymeleaf or FreeMarker, etc.

5. View: View is responsible for rendering the data in the model to a specific output format, such as HTML, JSON or XML. It is responsible for presenting the model's data to the user and generating the final response.

In addition to the above core components, Spring MVC also provides many other functions and features, such as data binding, form processing, file upload, interceptors, internationalization, etc. It also supports RESTful style web service development and seamlessly integrates with other Spring framework modules (such as Spring Boot, Spring Security and Spring Data, etc.).

Using Spring MVC can bring many benefits. First, it provides a clear architectural pattern, making the organization and maintenance of code simpler and more controllable. Secondly, Spring MVC is highly scalable and flexible and can be customized and extended according to the needs of the application. In addition, it provides a wealth of functions and features that make developing web applications more efficient and convenient.

In summary, Spring MVC is a Java-based Web application development framework that adopts the Model-View-Controller (MVC) architectural pattern. It provides a clear, scalable and efficient way to build web applications. The core components of Spring MVC include DispatcherServlet, HandlerMapping, Handler, ViewResolver and View, etc. Using Spring MVC can make developing web applications simpler, more efficient and more controllable.

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