»Spring 3« ist da. Vieles ist geblieben, manches verschwunden, manches neu. Spring 3 verspricht eine verbesserte und dynamischere Konfiguration, einen leistungsfähigen und mächtigen REST-Support und viele kleine Verbesserungen. Parallel zu dem Spring 3-Release wurden auch andere Tools und Projekte aktualisiert, auf die wir ebenfalls einen Blick werfen wollen: * Wichtige Änderungen * Java Configuration * Spring Expression Language * Spring MVC und Rest * Embedded Database * SpringSource Toolsuite * Spring Roo * Grails

1. Thorsten Kamann · itemis AG · 15.03.2010

2. What‘s new, what‘s old?
Configuration
OX/Mapper
REST-Support
MVC, Embedded Database, EE6
SpringSource Toolsuite
Spring Roo
Grails

5. - jUnit 3 Klassen
Commons Attributes
Struts 1.x Support

6. 100% API
Spring
3
95%
Extension
Points

7. Modules OSGi
Enterprise
Maven
Repository

8. #{...}
Expression Language Java Config

9. #{...} @Value
Expression
Language
XML ExpressionParser

10. <bean class=“MyDatabase"> !
!<property name="databaseName" !
! value="#{systemProperties.databaseName}"/> !
!<property name="keyGenerator" !
! value="#{strategyBean.databaseKeyGenerator}"/> !
</bean> !

11. @Repository !
public class MyDatabase { !
!@Value("#{systemProperties.databaseName}") !
!public void setDatabaseName(String dbName) {…} !
!@Value("#{strategyBean.databaseKeyGenerator}") !
!public void setKeyGenerator(KeyGenerator kg) {…} !
} !

12. Database db = new MyDataBase(„myDb“, „uid“, „pwd“);!
ExpressionParser parser = new SpelExpressionParser();!
Expression exp = parser.parseExpression("name");!
EvaluationContext context = new ! ! !
! ! ! !StandardEvaluationContext();!
context.setRootObject(db);!
String name = (String) exp.getValue(context);!

13. Database db = new MyDataBase(„myDb“, „uid“, „pwd“);!
ExpressionParser parser = new SpelExpressionParser();!
Expression exp = parser.parseExpression("name");!
String name = (String) exp.getValue(db);!

14. @Configuration @Bean @DependsOn
@Primary @Lazy @Import
@ImportResource @Value

15. @Configuration!
public class AppConfig {!
@Value("#{jdbcProperties.url}") !
!private String jdbcUrl;!
!!
!@Value("#{jdbcProperties.username}") !
!private String username;!
!@Value("#{jdbcProperties.password}") !
!private String password;!
}!

16. @Configuration!
public class AppConfig {!
@Bean!
!public FooService fooService() {!
! !return new FooServiceImpl(fooRepository());!
}!
!@Bean!
public DataSource dataSource() { !
!return new DriverManagerDataSource(!
! ! !jdbcUrl, username, password);!
}!
}!

17. @Configuration!
public class AppConfig {!
@Bean!
!public FooRepository fooRepository() {!
! !return new HibernateFooRepository ! ! !
! ! !(sessionFactory());!
}!
@Bean!
public SessionFactory sessionFactory() {!
! !...!
}!
}!

18. <context:component-scan !
!base-package="org.example.config"/>
<util:properties id="jdbcProperties"
! !location="classpath:jdbc.properties"/>!

19. public static void main(String[] args) {!
ApplicationContext ctx = !
! ! !new AnnotationConfigApplicationContext(!
! ! ! ! ! ! ! ! ! ! ! !AppConfig.class);!
FooService fooService = ctx.getBean(!
! ! ! ! ! ! ! ! ! ! ! !FooService.class);!
fooService.doStuff();!
}!

22. <oxm:jaxb2-marshaller !
!id="marshaller" !
!contextPath=“my.packages.schema"/>!
<oxm:jaxb2-marshaller id="marshaller">!
<oxm:class-to-be-bound name=“Customer"/>!
<oxm:class-to-be-bound name=„Address"/>!
...!
</oxm:jaxb2-marshaller>!

23. <beans>!
<bean id="castorMarshaller" !
!class="org.springframework.oxm.castor.CastorMarshaller" >!
<property name="mappingLocation"
! !value="classpath:mapping.xml" />!
</bean>!
</beans>

24. <oxm:xmlbeans-marshaller !
!id="marshaller“!
!options=„XMLOptionsFactoryBean“/>!

25. <oxm:jibx-marshaller !
!id="marshaller" !
!target-class=“mypackage.Customer"/>!

26. <beans>!
<bean id="xstreamMarshaller"
!class="org.springframework.oxm.xstream.XStreamMarshaller">!
<property name="aliases">!
<props>!
<prop key=“Customer">mypackage.Customer</prop>!
</props>!
!</property>!
</bean>!
...!
</beans>!

28. Spring MVC
@Controller @RequestMapping @PathVariable

29. @Controller
The C of MVC
<context:component-
scan/>
Mapping to an URI
(optional)

30. @RequestMapping
Mapping a Controller
or Methods to an URI
URI-Pattern
Mapping to a HTTP-
Method
Works with
@PathVariable

31. @Controller!
@RequestMapping(„/customer“)!
public class CustomerController{!
!@RequestMapping(method=RequestMethod.GET)!
!public List<Customer> list(){!
! !return customerList;!
!}!
}!

32. @Controller!
@RequestMapping(„/customer“)!
public class CustomerController{!
!@RequestMapping(value=„/list“,!
! ! ! method=RequestMethod.GET)!
!public List<Customer> list(){!
! !return customerList;!
!}!
}!

33. @Controller!
@RequestMapping(„/customer“)!
public class CustomerController{!
!@RequestMapping(value=„/show/{customerId}“,!
! ! ! method=RequestMethod.GET)!
!public Customer show(!
! @PathVariable(„customerId“) long customerId){!
! !return customer;!
!}!
}!

34. @Controller!
@RequestMapping(„/customer“)!
public class CustomerController{!
!@RequestMapping(!
! !value=„/show/{customerId}/edit/{addressId}“,!
! !method=RequestMethod.GET)!
!public String editAddressDetails(!
! @PathVariable(„customerId“) long customerId,!
! @PathVariable(„addressId“) long addressId){!
! !return „redirect:...“;!
!}!
}!

35. RestTemplate
Delete Get Head Options Post Put

37. Host localhost:8080!
Accept text/html, application/xml;q=0.9!
Accept-Language fr,en-gb;q=0.7,en;q=0.3!
Accept-Encoding gzip,deflate!
Accept-Charset ISO-8859-1,utf-8;q=0.7,*;q=0.7!
Keep-Alive 300!
public void displayHeaderInfo(!
@RequestHeader("Accept-Encoding") String encoding,!
@RequestHeader("Keep-Alive") long keepAlive) {!
!...!
}!

38. JSR-303
public class VistorForm(!
!@NotNull!
@Size(max=40)!
!private String name;!
!@Min(18)!
!private int age;!
}!
<bean id="validator" !
!class=“...LocalValidatorFactoryBean" />!

39. HSQL H2 Derby ...

40. <jdbc:embedded-database id="dataSource">!
<jdbc:script !
! ! !location="classpath:schema.sql"/>!
<jdbc:script !
! ! !location="classpath:test-data.sql"/>!
</jdbc:embedded-database>!
EmbeddedDatabaseBuilder builder = new ! !
! ! ! !EmbeddedDatabaseBuilder();!
EmbeddedDatabase db = builder.setType(H2)!
! ! ! !.addScript(“schema.sql")!
! ! ! !.addScript(„test-data.sql")!
! ! ! !.build();!
//Do somethings: db extends DataSource!
db.shutdown();!

41. public class DataBaseTest {!
private EmbeddedDatabase db;!
@Before!
public void setUp() {!
! !db = new EmbeddedDatabaseBuilder()!
! ! ! !.addDefaultScripts().build();! !!
}!
@Test!
public void testDataAccess() {!
JdbcTemplate template = !
! ! ! ! !new JdbcTemplate(db);!
template.query(...);!
}!
@After!
public void tearDown() {!
db.shutdown();!
}!
}!

42. @Async (out
of EJB 3.1)
JSR-303
JSF 2.0
JPA 2

44. • Spring project, • OSGi bundle • Support for all the
Spring Application Tools
OSGi
Flexible Deployments
bean and XML file overview and most common
wizards visual dependency Java EE
• Graphical Spring graph application
configuration • Classpath servers
editor management • Advanced support
• Spring 3.0 support based on OSGi for SpringSource
including meta data dm Server
@Configuration • Automatic • Advanced support
and @Bean styles generation of for SpringSource
• Spring Web Flow manifest tc Server
and Spring Batch dependency meta • Cloud Foundry
visual data targeting for dm
development tools • SpringSource Server and tc
• Spring Roo project Enterprise Bundle Server
wizard and Repository • VMware Lab
development shell browser Manager and
• Spring • Manifest file Workstation
Application blue validation and integration and
prints and best best practice deployment
practice validation recommendations

50. Grails for Spring Best
AOP-driven
Java Practices
Nice
Test-driven
Console

51. @Roo*
Command AspectJ
Annotations
Line Shell Intertype Metadata RoundTrip
(Source-
Declarations
Level)

55. roo> project --topLevelPackage com.tenminutes
roo> persistence setup --provider HIBERNATE
--database HYPERSONIC_IN_MEMORY
roo> entity --class ~.Timer --testAutomatically
roo> field string --fieldName message --notNull
roo> controller all --package ~.web
roo> selenium test --controller ~.web.TimerController
roo> perform tests
roo> perform package
roo> perform eclipse
roo> quit
$ mvn tomcat:run

58. Roo for Best Groovy-
Groovy Practices driven
Test- Nice
driven Console

59. Have your next Web 2.0 Get instant feedback, Powered by Spring,
project done in weeks See instant results. Grails out performs the
instead of months. Grails is the premier competition. Dynamic,
Grails delivers a new dynamic language agile web development
age of Java web web framework for the without compromises.
application productivity. JVM.
Rapid Dynamic Robust

60. Support
Grails Project
Project Wizard different Grails
Converter
Versions
Grails
Full Groovy
Grails Tooling Command
Support
Prompt

62. CTRL+ALT+G (or CMD+ALT+G on Macs)

64. >grails create-app tenminutes-grails!
<grails create-domain-class tenminutes.domain.Timer!
Timer.groovy:!
class Timer {!
!String message!
!static constraints = {!
! !message(nullable: false)!
!}!
}!
>grails create-controller tenminutes.web.TimerController!
TimerController.groovy:!
class TimerControllerController {!
!def scaffold = Timer!
}!
>grails run-app!

67. • http://www.springframework.org/
Spring • http://www.springsource.com/
Grails & • http://www.grails.org/
• http://groovy.codehaus.org/
Groovy
• http://www.thorsten-kamann.de
Extras • http://www.itemis.de