Spring Web

 Spring Web is a part of the Spring Framework that provides features and utilities for building web applications in Java. It includes various components and modules to simplify common web development tasks, such as handling HTTP requests and responses, managing web sessions, and integrating with web technologies.

Here are some key features of Spring Web:

  1. DispatcherServlet: Spring Web introduces the DispatcherServlet, which acts as the front controller for processing incoming web requests. It routes requests to appropriate handler components based on configuration and URL mappings.

  2. Spring MVC: Spring Web includes the Spring MVC (Model-View-Controller) framework, which provides a robust and flexible architecture for building web applications. It allows developers to define controllers to handle requests, views to render responses, and models to manage data.

  3. Handler Mapping: Spring Web supports flexible handler mapping mechanisms to map incoming requests to specific controller methods or handlers. It includes various options for mapping requests based on URL patterns, HTTP methods, and other criteria.

  4. View Resolution: Spring Web supports various view technologies for rendering dynamic content, including JSP (JavaServer Pages), Thymeleaf, FreeMarker, and more. It provides view resolvers to resolve view names to actual view implementations.

  5. Data Binding and Validation: Spring Web includes support for data binding and validation, allowing developers to bind incoming request data to Java objects and validate it using validation rules defined using annotations or custom validators.

  6. Interceptors: Spring Web allows developers to define interceptors to intercept and pre-process incoming requests or post-process outgoing responses. Interceptors can perform tasks such as authentication, logging, or adding common attributes to the model.

  7. REST Support: Spring Web provides support for building RESTful web services using Spring MVC. It includes features such as content negotiation, HTTP message converters, and support for annotations like @RestController and @RequestMapping.

  8. Static Resources Handling: Spring Web includes features for serving static resources such as CSS, JavaScript, and images efficiently. It can automatically serve static resources from configurable locations or delegate to external resources.

Overall, Spring Web simplifies web application development in Java by providing a comprehensive framework for handling HTTP requests, managing web sessions, rendering views, and building RESTful web services. It integrates seamlessly with other Spring modules and libraries, making it a popular choice for building enterprise-grade web applications.

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