Spring Framework – An Introduction

                              Spring Framework – An Introduction

 

Table of Contents:- 

• Objective
• Introduction
• Spring Framework
• Spring Architecture Modules
• References
• Source of Info 

Objectives:- 

This document is briefly introduces various features of Spring Framework.

It provides references to Spring Framework resources.

 

Introduction:- 

Spring is an open source project since February 2003, a relative modern

framework. However, in a short time-span, it has created quite enthusiasm in

the Java community. 

Spring’s main aim is to make J2EE easier to use and promote good programming

practice. It does this by adopting three design ideologies:

 

            1. POJO-based programming model.

            2. Inversion of Control (a.k.a. Dependency Injection) design pattern.

            3. Aspect Oriented Programming (AOP).

 

In addition, wherever possible, it leverages existing solutions. Examples of such leverage include Struts for the Web Tier and Hibernate/iBatis for the Data Tier.

Spring has been one of the first frameworks to offer a Business Tier solution.

 

Spring Framework :- 

Spring is Java based open source framework 

• Developed by Rod Johnson and Team
• Based on book Expert One-on-One J2EE Design and Development by Rod Johnson

 

Spring addresses the complexity of enterprise application development 

• Use plain vanilla java beans
• Focus on simplicity, testability and loose coupling

 

Lightweight framework 

• Single jar file
• No processing overhead
• Non intrusive – application code and spring code are independent 

 

IoC based framework 

• Object dependencies are passively injected using inversion of control. AOP based framework
•  Provides rich AOP support
•  Separates business logic from system services like logging and transactions. 

Spring Container 

• Spring creates and manages the life cycle and configurations of application objects
•  Objects are composed declaratively in XML files. 

Spring is a great framework for reducing the lines of code (LOC) in the

application development. 

It promotes good programming practices. 

Make existing technologies easier to use. 

Foster interface based programming. 

Leverage benefits of Object Oriented Technology. 

Promote integration with existing solutions (like Log4j, Hibernate, JDO, Struts,iBatis etc) rather than competing with them or reinventing the wheel. 

Spring is easy to use. 

Spring is based on DRY (Don’t Repeat Yourself) principle.

 

Spring Architecture Modules :- 

1. Spring Core 
2. Spring Context 
3. Spring DAO/JDBC 
4. Spring AOP 
5. Spring ORM 
6. Spring Web 
7. Spring Web MVC

 

Spring Core: 

•  Fundamental part of Spring
•  Provides Dependency Injection
•  Based on factory pattern
•  Provides loose coupling between objects

 

Spring Context: 

•  Layer above the Spring Core
•  Provides support for resource bundles, event-propagation, resourceloading and transparent creation of contexts 

Spring DAO:

• Provides a JDBC-abstraction layer
• Supports programmatic as well as declarative transaction management 

Spring ORM: 

• Provides seamless integration with popular O/R mappers like Hiberante,Toplink, JDO
• Integrates with iBatis 

Spring AOP: 

•  Spring’s AOP component provides an Aop Alliance compliant aspect-oriented programming
• Supports source-level metadata, a little like .NET attributes 

Spring Web: 

•  Spring’s Web component provides the basic web-oriented integration features
• Integrates with Struts and Webwork 

Spring Web MVC: 

• Spring Web MVC component provides a Model-View-Controller

            implementation for web-applications

 

References :-

http://javaboutique.internet.com/tutorials/spring_frame/article.html

 

Source of Information :- 

• Internet
• Books
• Friends