Spring Framework Overview & Tools


  • What is Spring framework? 
  • Why Spring framework? 
  • Spring framework architecture 
  • Usage scenario 
  • Tools (we are going to use in this course)

What is Spring Framework?

  • Light-weight yet comprehensive framework for building various types of Java applications 
    • Web applications 
    • Enterprise applications 
    • Standalone applications 
    • Batch application 
    • Integration application 
    • Mobile application

Things you can build with Spring

Things you can build with Spring

Key Features - DI 

  • Bean wiring is done through the Dependency Injection (DI) 
    • This aims to eliminate manual wiring of beans 
  • A core bean factory, which is usable globally 
    • Spring MVC uses it internally

Key Features - Persistence

  • Comprehensive RDBMS support 
    • Generic abstraction layer for database transaction management 
    • Higher abstraction over JDBC 
    • Integration with persistence frameworks such as Hibernate, JPA 
  • NoSQL support 
    • MongoDB

Key Features - Web-Tier

  • Spring MVC web application framework 
    • Built on core Spring functionality 
    • Supports many technologies for generating views, including Thymeleaf, Velocity, Freemarker, and JSP, etc 
  • Spring Web Flow 
    • Navigation logic is externalized 
  • REST support
    • Simple to create RESTful service 
  • Default over configuration
    • Everything is configurable and customizable

Key Features - AOP

  • Extensive aspect-oriented programming (AOP) framework for providing services such as transaction management, security support 
  • As with DI, this aims to improve the modularity of systems created using the framework

Key Features - Test

  • Supports Unit testing and Integration testing of Spring components 
  • Supports both JUnit and TestNG 
  • Provides consistent loading of Spring ApplicationContexts and caching of those contexts 
  • Provides mock objects that you can use to test your code in isolation

Why Use Spring Framework?

  • Wiring components (Beans) through Dependency Injection (DI) 
    • Promotes de-coupling among the parts that make up an application 
  • Design to Java interfaces 
    • Insulates a user of a functionality from implementation details 
  • Test-Driven Development (TDD)
    • POJO classes can be tested without being tied up with the framework
  • Declarative programming through AOP
    • Transaction and security can be easily and declaratively configured 
  • Simplify use of popular technologies 
    • Abstractions insulate application from specifics, eliminate redundant code 
    • Underlying technology specifics still accessible 
    • Handle common error conditions
  • Conversion of checked exceptions to unchecked 
    • (Or is this a reason not to use it?) 
  • Not an all-or-nothing solution 
    • Extremely modular and flexible 
  • Well designed 
    • Easy to extend 
    • Many reusable classes
  • Integration with other technologies 
    • JPA, Hibernate, JDBC (for data access) 
    • Thymeleaf, Velocity, etc. (for presentation) 
    • JSF, Wicket, Struts, etc (For web) 
    • AngularJS, jQuery, JavaScript (for front-end UI) 
    • ActiveMQ, AMQP (for messaging)

Spring Framework Architecture

Spring Framework Runtime

Usage Scenarios

You can use Spring in all sorts of scenarios, from applets up to fully-fledged enterprise applications using Spring's transaction management functionality and web framework integration

Typical Full-fledged Spring Web Application

Typical Full-fledged Spring Web Application

SpringSource Tool Suite (STS)

  • Eclipse-powered development environment for building Spring-powered enterprise applications 
    • Supports Java, Spring, Groovy and Grails 
  • Comes with developer edition of vFabric tc Server 
    • Pivotal tc Server is Tomcat that is optimized for Spring 
    • You can use Tomcat and other servers with STS

Lab: Exercise1: Download & Install STS Exercise 2: Build and run a simple SpringMVC Application using STS 4931_spring_sts.zip

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