Shulou(Shulou.com)06/02 Report--

This article introduces the relevant knowledge of "what does Spring MVC mean?". Many people will encounter such a dilemma in the operation of actual cases. Then let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Catalogue

1. Brief introduction to Spring MVC

2. Spring MVC structure

3. Spring MVC workflow

4. Advantages of Spring MVC

1. Brief introduction to Spring MVC

Spring MVC is a Java framework for building Web applications, following the model-view-controller design pattern. It implements all the basic functions of a Spring core framework, such as IoC (inversion of Control), DI (dependency injection) and so on.

Spring MVC makes it easy to use MVC in the Spring framework by using DispatcherServlet, where DispatcherServlet is a resource class that receives an incoming request and maps it to the correct resource class.

2. Spring MVC structure Model: contains application data, which can be a single object or a collection of objects; Controller: contains the application's business logic, usually using @ Controller annotations to mark classes as Controller.View: information provided in a specific format, usually using JSP + JSTL to create view pages. In addition, Spring also supports view technologies such as Themeleaf and FreeMaker. In Front Controller:Spring MVC, the DispatcherServlet class acts as the front-end controller and is responsible for managing the flow of the Spring MVC application. 3. Spring MVC workflow

As shown in the figure above, first, the incoming request (request) is intercepted by the DispatcherServlet working in the front-end controller (front Controller); then the DispatcherServlet gets the entry of the processor mapper (Handler Mapping) from the XML configuration file and forwards the request to the controller (Controller); then the controller (Controller) returns a ModelAndeView object Finally, DispatcherServlet checks the corresponding view parser (ViewResolver) entry in the XML configuration file according to the object returned by the controller (Controller), and calls the specified view component to present the view (View) at the front end. 4. Spring MVC's advantages simplify the development of the Web layer and are easy to maintain; naturally integrate with the Spring framework; provide contractual programming support with strong conventions greater than configuration; easy to Web unit testing; support flexible URL to page controller mapping; support static resources; support RESTful style; flexible data validation, formatting and data binding mechanisms that can use any object for data binding without having to implement a specific framework API Provide a powerful JSP tag library to simplify JSP development; support flexible localization, theme parsing; more simple exception handling; "what is the meaning of Spring MVC" content is introduced here, thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.