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Introduction to Spring 4, Spring MVC, and Spring REST

Course ID: SPRING4-MVC-REST

Over the years, Spring has added many new capabilities, in line with the increasing capabilities of the Java platform. As well as being current with Spring 4, this course introduces techniques for using these powerful capabilities. It includes complete coverage of the three main configuration styles: Java-based (@Configuration), annotation-based (@Component), and the traditional XML-based configuration that may still play an important role in existing and new projects. It also provides guidelines for when and how to use each one.

The course starts with in-depth coverage on using the powerful capabilities of Spring's Core module to reduce coupling and increase the flexibility, ease of maintenance, and testing of your applications. It goes on to cover many of the most important capabilities of Spring, including integrating persistence layers (e.g. Hibernate/JPA) with Spring, using Spring's powerful Aspect Oriented Programming (AOP) to program cross-cutting concerns in a safe and maintainable way, and using Spring's declarative transaction capabilities.

The course includes integration of Spring with Java EE Web applications, and an introduction to Spring MVC. Spring MVC utilizes a Model-View-Controller pattern for building Web applications, and the intoduction covers the basics of Spring MVC, and how it supports organizing your Web applications in a highly structured, loosely coupled manner. This includes an introduction to REST (Representational state transfer), and how to use Spring MVC to build RESTful resources and invoke them from Ajax-based front ends.

This course is hands on with labs to reinforce all the important concepts.  It will enable you to build working Spring applications and give you an understanding of the important concepts and technology in a very short time.

Course Information

Duration: 5 days

Hands-on: Minimum 50% hands-on labs

Supported Platforms: Spring 4, Eclipse/ Spring Tool Suite (STS), Can be supported on IBM RAD/WAS, IntelliJ, NetBeans, GlassFish AS with advance notice

Skills Gained:

Course Details:

Session 1:  Introduction to Spring

  • Overview of Spring Technology
    • Challenges for Modern Applications
    • Motivation for Spring, Spring Architecture
    • The Spring Framework
  • Spring Introduction
    • Managing Beans
    • Inversion of Control / IoC, Dependency Injection / DI
    • Configuration Metadata Overview, Configuring Beans (XML)
  • The Spring Container
    • Overview of the Spring Container
    • A Simple Spring Example
    • ApplicationContext Overview
    • ClassPathXmlApplicationContext, FileSystemXmlApplicationContext, AnnotationConfigApplicationContext
    • API and Usage
  • Dependencies and Dependency Injection (DI)
    • Examining Dependencies
    • Dependency Inversion
    • Dependency Injection (DI) in Spring - Basic Configuration and Usage

Session 2:  Configuration in Depth

  • Annotation Driven Configuration
    • JSR 330 (@Named) and Spring (@Component) annotation styles
    • @Named/@Component, @Inject/@Autowired, @Repository, @Service
    • Configuring Beans and Autowiring with Annotations
    • Enabling Annotations - context:component-scan
    • Pros and Cons
  • Java Based Configuration (@Configuration)
    • Overview - code-centric Configuration
    • @Configuration and @Bean
    • Dependency Injection
    • Resolving Dependencies on Other Beans, Injecting Configuration Classes
    • Pros and Cons
  • Integrating Configuration Types
    • Choosing a Configuration Style
    • Integrating Configuration Styles
    • Importing: @Import and
    • Scanning with @Configuration style
  • Bean Scope and Lifecycle
    • Bean Scope Defined - singleton, prototype, and Other Scopes
    • Configuring Scope
    • Bean Creation Lifecycle, Lifecycle Callbacks
    • BeanPostProcessor, Event Handling

Session 3:  Wiring in Depth

  • Value Injection
    • Configuring Value Properties, Property Conversions
    • Externalizing Values in Properties Files
  • Constructor Injection
    • Constructor Injection Overview
    • Configuration - @Configuration and XML
    • p: and c: namespaces for XML configuration
  • Qualifiers / Domain Specific Language (DSL)
    • Limitations of Autowiring
    • Qualifiers and DSL
    • Creating and Using an Annotation-Based DSL for Bean Configuration
    • Benefits of Qualifiers for Bean Configuration
  • Profiles
    • Profiles Overview
    • Configuring Profiles (XML and @Configuration)
    • Activating Profiles
  • Overview of SpEL

Session 4:  Database Access with Spring

  • Overview of Spring database support
  • Configuring a DataSource
  • Using Spring with Hibernate
    • High Level Hibernate Overview
    • SessionFactory configuration, LocalSessionFactoryBean
    • Contextual Sessions and Spring Integration
  • Using Spring with JPA
    • Managing the EntityManager (EM)
    • LocalContainerEntityManagerFactoryBean and Container-managed EMs
    • JEE and JNDI Lookup of the EM
    • Configuration and Vendor Adaptors
    • Creating a JPA Repository/DAO Bean - @PersistenceUnit, @PersistenceContext

Session 5:  Aspect Oriented Programming (AOP)

  • Overview of AOP
    • Crosscutting Concerns
    • AOP Basics, Aspect, Joinpoint, Advice, Pointcut
  • Spring AOP Introduction
    • Configuration - XML and @AspectJ
    • Defining an Aspect, Pointcut, and Advice
    • How Advice is Triggered
  • Continued in next column ...

Session 5:  (AOP) Continued ...

  • Pointcut Expressions and Advice
    • Pointcut Expression Overview
    • The execution() Designator
    • Other Designators (within, target, args, @target, ...)
    • Kinds of Advice - before, after, around, after-returning, after-throwing
  • Marker Annotations (Rubber Stamp AOP)
    • Issue with AOP Configuration
    • Defining an AOP Marker / Rubber Stamp
    • Configuring AOP Using a Marker
    • Advantages of Marker Annotations
  • @AspectJ Based AOP Support
    • @AspectJ Annotations Overview
    • Defining an Aspect, Pointcut, and Advice
  • Other Considerations
    • Spring AOP Proxies and Self-Invocation Issues
    • Load-Time Weaving
    • Caveats of AOP

Session 6:  Spring Transaction (TX) Management

  • Intro to Spring Transaction Management
    • Spring Transaction Managers
    • Spring Declarative TX Management
    • Spring TX Scope and Propagation
    • Spring TX Attributes (REQUIRED, SUPPORTS, etc)
  • XML Configuration of Transactions
    • Specifying Advice, TX Attributes, and Methods
    • Linking Advice with Pointcuts
    • Benefits of XML Configuration of TX Behavior

Session 7: Spring Web Integration and Intro to Spring MVC

  • Integrating Spring with Java EE Web Apps - ContextLoaderListener and WebApplicationContext
  • Spring Web MVC Overview, Capabilities, Architecture (Front Controller, MVC Pattern)
  • Spring MVC Basics
    • DispatcherServlet, Configuration (@EnableWebMvc, Servlet 3 initialization), mvc Namespace
    • Controllers, @Controller, @RequestMapping (Handler Methods)
    • @RequestParam and Parameter Binding
    • View Resolvers
    • Controller Details, @RequestMapping, @RequestParam, @PathVariable
    • Model Data, @ModelAttribute, Model/ModelAndView Classes

Session 8: Additional Spring MVC Capabilities

  • Reference Data with @ModelAttribute
  • Forms and Binding, Spring Form Tags
  • Session Attributes, @SessionAttributes
  • Validation / JSR-303

Session 9: RESTful Services with Spring

  • REST Overview (Characteristics/Capabilities, URI Templates, REST vs SOAP
  • REST and Spring MVC
    • Spring support for REST
    • @RequestMapping/@PathVariable, @RequestBody, @ResponseBody, HTTP Method conversion
    • URI Templates and @PathVariable
    • Writing RESTful Controllers / @RestController
  • Generating JSON
    • JSON Overview
    • JSON Representations for Resources
    • Message Converters
  • Generating XML
    • JAXB and Jackson Message Converters for XML
    • JAXB / @XmlRootElement
  • Content Negotiation

Session 10: Java Clients for RESTful Services

  • Client Requirements and Spring's RestTemplate
  • getForObject() / getForEntity()
  • Other RestTemplate Methods
  • Accessing Headers / exchange()

Session 11: Common REST Patterns

  • GET: Read
  • POST: Create
  • PUT: Update
  • DELETE: Delete
  • Programming on server side, and client side (with RestTemplate)

Session 12:  XML Specific Configuration

  • Collection Valued Properties - Configuring and using lists, sets, etc.
  • Additional Capabilities
    • Factory Classes and Factory Methods
    • Definition Inheritance (Parent Beans)
    • AutoWiring with XML
    • Inner Beans, Compound Names

Appendix:  Maven and Spring

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