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The Spring Framework @maxgoff
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The Spring Framework:
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⁻ What is Spring ⁻ Modules ⁻ Spring MVC
What is Spring?
Comprehensive Programming/Config model Modern Java-based (JVM) Enterprise Focus: Lightweight & “Plumbing” Flexible Dependency Injection Infrastructure (support) for declarative:
transactions caching validation formatting
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Spring Origin: Rod Johnson (Expert One-on-One J2EE Design and Development)
What is Spring?
Powerful abstractions: JDBC, JPA, JTA, JMS
Support for open source frameworks: Hibernate, Quartz
Flexible Web Framework for RESTful MVC Rich testing facilities
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⁻ Modular in design ⁻ Incremental adoption ⁻ Range of deployment
platforms, such as Tomcat & WebSphere
⁻ Citizen of major clouds such as Heroku, VMware, & Amazon
What is Spring?
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• Dependency Injection • Aspect-oriented programming • Data access framework • Transaction management framework • Remote access framework • Convention-over-configuration • Model-view-controller framework
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Spring Modules
• Inversion of control container • Uses Java Reflection • Creates managed objects (“beans”) • Dependency Lookup • Dependency Injection Patterns: • Constructors • Properties • Factories
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Dependency Injection
Spring Modules
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Dependency Injection
Spring Modules
The Spring Container
Fully configured
system
Configuration Metadata
Your Business Objects (POJOs)
produces
• AOP: • increases modularity • allows for separation of cross- cutting concerns
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Aspect-oriented framework
Spring Modules
• Resource management • Exception handling • Transaction participation • Resource unwrapping • Abstraction
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Data access framework
Spring Modules
• Spring brings transaction abstractions:
• global, local, nested
• Platform TransactionManager
• Transaction Template
• metadata or Java annotations
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Transaction management framework
Spring Modules
• Abstraction for various RPC technologies
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Remote access framework
Spring Modules
Convention-over-configuration • Spring Roo
(http://www.springsource.org/spring-roo)
• Request-based framework • Strategy interfaces • GOAL: Simple and clear
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MVC Framework Spring Modules
• Front Controller: DispatcherServlet Class
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MVC Framework Spring Modules
• Clear separation of roles: Each role (controller, validator, command object, DispatcherServlet, etc) can be fulfilled by a specialized object
• Configuration of both framework and application classes as JavaBeans:
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MVC Framework Spring Modules
• Adaptability & flexibility: Define any controller method signature you need, possibly using one of the parameter annotations
• Reusable business code: Use existing business objects as command or form objects instead of mirroring them to extend a particular framework base class
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MVC Framework Spring Modules
• Customizable binding & validation • Customizable handler mapping & view resolution • Flexible model transfer:
Model transfer with a name/value Map supports easy integration with any view technology
• Customizable locale and theme resolution • Support for JSPs with/without Spring tag library
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MVC Framework Spring Modules
• Support for JSTL • Support for Velocity without the need for
extra bridges • Spring tag library for data binding & themes • JSP form tag library
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MVC Framework Spring Modules
Spring Resources Tutorials:
Developing a Spring Framework MVC application: http://static.springsource.org/docs/Spring-MVC-step-by-step/
Introduction to Spring Web MVC:
https://netbeans.org/kb/docs/web/quickstart-webapps-spring.html
Resources: The Spring Framework:
http://www.springsource.org/spring-framework Modern Web:
http://www.springsource.org/features/modern-web NetBeans IDE:
http://netbeans.org
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http://about.me/maxgoff http://linkedin.com/in/maxgoff
http://bigsmartdata.com @maxgoff
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