what’s new in spring 3.1? · • spring 3.1 • release schedule overview ... • rest support...

Arjen Poutsma@poutsma

SpringSource - a division of VMware

What’s new in Spring 3.1?

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• Spring 3.0

• Spring 3.1

• Release Schedule

Overview

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Spring 3.0

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• Java 5+

• Spring Expression Language

• REST support

• Declarative model validation

• Early support for Java EE 6

Spring 3.0 Themes

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Spring 3.1

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• Environment abstraction

• Java application configuration

• Cache abstraction

• @MVC improvements

Spring 3.1 Themes

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Environment Abstraction

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SpringSource Confidential. Do not distribute without express permission

Cloud Foundry

IDE

Development

Tomcat

IntegrationTesting

tc Server

Pre-Production

tc Server

Production

Application

Spring

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• Various environments

• Development in IDE

• Integration testing in container

• Pre-production in container

• Production

• New: the Cloud

• Bonus challenge: immutable artefacts

The Environment Challenge

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• JNDI

• Only works in container

• System Properties

• Requires access to environment

• Separate application contexts

• Separate artefacts

• PropertyPlaceHolder-Configurer & friends

• Separate artefacts

• Requires access to environment

• Relatively confusing

Current solutions

10donderdag 13 oktober 11

SpringSource Confidential. Do not distribute without express permission

SimpleObject

Dep

ende

ncy

Inje

ctio

nAO

P

Portable Service Abstractions

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• Group bean definitions by profile

• e.g. development, testing, production

• Specify which environment to use

Environment Abstraction

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Group Beans

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Grouping Beans (2)

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Activate Profile

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Activate Profile (2)

•  System properties– -Dspring.profiles.active=“dev”– -Dspring.profiles.default=“common”

• TestContext Framework

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Java Application Configuration

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Java-Based Application Configuration

XML JavaConfig

Namespaces @Enable*

FactoryBean Builders

GenericXmlContextLoader  AnnotationConfigContextLoader 

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@Enable

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@Enable

• @EnableTransactionManagement

• @EnableAsync

• @EnableScheduling

• @EnableLoadTimeWeaving

• @EnableWebMvc

• @EnableAspectJAutoProxy

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c Namespace

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Cache Abstraction

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• @Cacheable and @CacheEvict

• Pluggable!

Caching Abstraction

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24

@Cacheable

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Cache Configuration

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• Two available implementations

• EhCache

• ConcurrentMap

• JSR 107

• Pluggable!

Cache Providers

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@MVCImprovements

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• Introduced in Spring 2.5

• Major improvements in 3.0

• REST

• Further improvements in 3.1

• Complete refactoring

@MVC

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• Arguments

• ModelAndView

• ServletRequest and ServletResponse

• @RequestBody, @RequestHeader

• HttpEntity,

• …

• Return Types

• ModelAndView

• @ResponseBody

• ResponseEntity

• …

@MVC arguments and return values

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Behind the Curtains

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Custom argument and return value handlers

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@MVC 2.0

• Enabled by default

• <mvc:annotation-driven/>

• @EnableWebMvc

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• Two new elements on the RequestMapping annotation

• Consumes: consumable media types

• Content-Type header

• Produces: producible media types

• Accept header

Consumes and Produces

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Consumes

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Produces

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Other @MVC tid-bits • @EnableWebMvc

• WebMvcConfiguration

• @PathVariable added to model

• Uri templates in “redirect:” locations

• Servlet 3.0 support

• no web.xml

• asynch requests

• file upload support

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Summary

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Spring 3.1• Environment and Profiles

• Java-based Configuration improvements

• Testing with @Configuration and Profiles

• Cache Abstraction

• MVC and REST Improvements

• Servlet 3.0

• c: Namespace

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• RC1 out yesterday!

• GA “Soon”

• Spring 3.2

• Java SE 7

• JDBC 4.1, JSF 2.2, JPA 2.1

• Fork-join

Release Schedule

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Q & A

If time permits...

40donderdag 13 oktober 11