From basic server-side technologies like Servlets and JSP to modern frameworks like Spring Boot and Spring Cloud Gateway, Java offers powerful tools for building everything from simple web apps to complex microservices. A Java Web Framework is a set of pre-written code libraries and components that help developers build, manage and maintain web applications more easily. It abstracts common functionalities like.
- HTTP request handling
- Form processing and validation
- URL routing
- Session management
- MVC pattern implementation
- Security and RESTful services
1. Servlets
Servlets are Java classes that run on a web server and handle HTTP requests and responses. They are part of Java EE (Jakarta EE) and form the foundation of many Java web technologies.
Key Features
- Lifecycle managed by the servlet container (like Tomcat)
- Used to process form data, manage sessions, redirect responses, etc.
- Works closely with HTML, forms and HTTP
Example Use:
Handling user login data submitted through an HTML form.
2. JSP (JavaServer Pages)
JSP is a server-side technology that allows embedding Java code directly into HTML using special tags (<% %>). It simplifies creating dynamic web pages by separating UI from Java code.
Key Features
- Works with Servlets behind the scenes
- Allows writing Java code in HTML pages
- Supports JSTL (JavaServer Pages Standard Tag Library) and EL (Expression Language) for cleaner code
Example Use:
Displaying personalized user information based on session data.
3. Spring MVC
Spring MVC is a web framework from the Spring Framework ecosystem. It follows the Model-View-Controller (MVC) architecture, making it easier to separate business logic, presentation and data layers.
Key Features
- Handles HTTP requests via @Controller and @RequestMapping
- Integrates easily with JSP, Thymeleaf, etc.
- Supports REST APIs, form handling, validation, etc.
Example Use:
Creating a structured web application that handles form inputs, applies business logic and shows results in a clean UI.
4. Spring Boot
Spring Boot is a framework that simplifies Spring application development by providing auto-configuration, embedded servers (like Tomcat) and minimal setup.
Key Features
- No need for complex XML configurations
- Embedded web servers (Tomcat/Jetty/Undertow)
- Production-ready features like metrics, logging and health checks
- Works seamlessly with Spring MVC, Spring Data and more
Example Use:
Creating RESTful web services, microservices or full-stack web apps with minimal boilerplate.
5. Spring Security
Spring Security is a powerful authentication and authorization framework used to secure Spring-based applications.
Key Features
- Supports username/password login, JWT, OAuth2, LDAP
- Offers protection against common threats (CSRF, session fixation, etc.)
- Easily integrates with Spring Boot and Spring MVC
Example Use:
Adding login pages, role-based access control or securing APIs.
6. Spring Cloud Gateway
Spring Cloud Gateway is an API Gateway built on top of Spring Boot and Project Reactor. It’s designed to handle routing, load balancing, security and monitoring for microservices architectures.
Key Features
- Supports dynamic routing, filters, circuit breakers
- Built on reactive programming model
- Ideal for microservices using Spring Cloud
Example Use:
Routing requests to different microservices, applying rate-limiting and logging API calls.