What is Spring MVC

Spring MVC is a lightweight Web development framework based on the MVC pattern provided by the Spring framework. It is a complete set of solutions provided by Spring for presentation layer development. Spring framework provides full-featured MVC modules for building web applications. It mainly consists of DispatcherServlet, processor mapping, processor, view parser, and view. Using Spring MVC, you can quickly build web applications and improve development efficiency and code quality.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

Spring MVC is a lightweight Web development framework based on the MVC pattern provided by the Spring framework. It is a complete set of solutions provided by Spring for presentation layer (UI) development. It separates the roles of controllers, model objects, dispatchers, and handler objects, making them easier to customize.

Spring MVC is a follow-up product of SpringFrameWork and has been integrated into Spring Web Flow. Spring framework provides full-featured MVC modules for building web applications. In Spring MVC, it mainly consists of DispatcherServlet, processor mapping, processor (controller), view resolver, and view.

1. Controller: is responsible for processing user requests and returning responses. In Spring MVC, controllers are implemented by classes marked with the @Controller annotation.

2. Processor mapping: Map user requests to the corresponding processor (controller). Spring MVC provides a variety of processor mapping methods, such as annotation-based mapping and URL-based mapping.

3. View parser: Used to parse the object returned by the controller into a view. Spring MVC provides a variety of view resolvers by default, such as InternalResourceViewResolver and FreeMarkerViewResolver.

4. View: is used to present the user interface. In Spring MVC, you can use a variety of template engines as views, such as Thymeleaf, Freemarker, and JSP.

5. Dispatcher: Dispatch the request to the corresponding processor (controller) based on the type of request (such as GET, POST) and URL path.

Spring MVC has the following characteristics:

1. Based on the MVC model: Separates business logic, data and interface, making the application structure clear , easy to maintain and expand.

2. Easy to test: Since the controller is POJO (Plain Old Java Object), you can use frameworks such as JUnit for unit testing.

3. Flexibility: Supports a variety of view parsers and template engines, and you can choose the appropriate solution according to project needs.

4. Strong community support: Because Spring MVC is an open source framework, it has huge community support and rich resources.

5. Convenient integration: Can be seamlessly integrated with other modules of Spring (such as Spring Security, Spring Data, etc.).

Using Spring MVC, you can quickly build web applications and improve development efficiency and code quality. At the same time, due to its design based on the MVC pattern, the application is easier to maintain and expand. Spring MVC is a good choice for projects that need to build web applications quickly and ensure maintainability and scalability.

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