Arjen Poutsma@poutsma

SpringSource - a division of VMware

What’s new in Spring 3.1?

1donderdag 13 oktober 11

• Spring 3.0

• Spring 3.1

• Release Schedule

Overview

2donderdag 13 oktober 11

Spring 3.0

3donderdag 13 oktober 11

• 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

5donderdag 13 oktober 11

• Environment abstraction

• Java application configuration

• Cache abstraction

• @MVC improvements

Spring 3.1 Themes

6donderdag 13 oktober 11

Environment Abstraction

7donderdag 13 oktober 11

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

11donderdag 13 oktober 11

• Group bean definitions by profile

• e.g. development, testing, production

• Specify which environment to use

Environment Abstraction

12donderdag 13 oktober 11

Group Beans

13donderdag 13 oktober 11

Grouping Beans (2)

14donderdag 13 oktober 11

Activate Profile

15donderdag 13 oktober 11

Activate Profile (2)

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

• TestContext Framework

16donderdag 13 oktober 11

Java Application Configuration

17donderdag 13 oktober 11

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

26donderdag 13 oktober 11

@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

29donderdag 13 oktober 11

Behind the Curtains

30donderdag 13 oktober 11

Custom argument and return value handlers

31donderdag 13 oktober 11

@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

33donderdag 13 oktober 11

Consumes

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Produces

35donderdag 13 oktober 11

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

37donderdag 13 oktober 11

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

38donderdag 13 oktober 11

• RC1 out yesterday!

• GA “Soon”

• Spring 3.2

• Java SE 7

• JDBC 4.1, JSF 2.2, JPA 2.1

• Fork-join

Release Schedule

39donderdag 13 oktober 11

Q & A

If time permits...

40donderdag 13 oktober 11