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Spring Big Picture

#1.What is Spring

"Spring" could mean ...

  • The Spring Framework
  • Spring Boot
  • Spring Data
  • Spring Cloud
  • Spring Batch
  • And more!

Spring Family

Web, Data, AOP, Core

Spring Projects

Spring Data, Spring Batch, Spring LDAP, Spring Session, Spring Kafka, Spring Social, Spring Web Services, Spring Integration, More...

Spring Boot

Built on Spring, Choice Making and Configuration

Spring Cloud

Spring Cloud is built upon Spring boot, Micro-service Arch.

Why Spring

Alternate to JEE Spring make it easy to create Java Enterprise Applications. Flexible, Modular and backwards compatible Large and active community

#2. Getting to know Spring with Spring Boot Spring Boot is used to create web and non-web application both

Notable Features

  1. Auto config
  2. Standalone (No need to deploy an application on web server). There is simple just run
    • Package the application (java -jar my-app.jar)
    • Run the application
  3. Opinionated

Start Project from Spring Initializer

  • For more learning
    1. Create your first Spring Boot application by Dan Bunker
    2. Spring Boot: Efficient Development, Configuration and Deployment by Dustin Schultz

#3. Understanding Spring's Foundation: The Spring Framework

Six key areas of Spring Framework

  1. Core
  2. Web
  3. AOP
  4. Data Access
  5. Integration
  6. Testing

Spring Core

Provides a number of different features

  • i18n Internationalization support
  • Validation Support
  • Data binding support
  • Type conversion support
  • and more...

At the center of Spring Core is Dependency Injection Dependency Injection is all about dealing with the way objects fulfill their dependent objects. Two choices to fulfill

  • Fulfill our own (Tightly Coupled).
  • Declare Dependencies(More Flexible, Loosely Coupled) -->> Dependency Injections

Spring Core is dependency Injection container

  • Create and maintains objects and their dependencies
  • Less for developer to manage

Spring Web

Framework for handling web requests

  1. Can be handled via Spring Web MVC
  2. Can be handled via Spring web Flux

Spring Web MVC