JDD2014: Spring 4, JAVA EE 7 or both? - Ivar Grimstad

@ivar_grimstadJDD 2014

Spring 4, Java EE 7 or Both?Ivar Grimstad


Contents

Spring 4 Java EE 7 Combining Spring 4 with Java EE 7


Timeline

1998 2014

JPE J2EE 1.2 J2EE 1.3 J2EE 1.4 Java EE 5 Java EE 6 Java EE 7

Spring Spring 1 Spring 2 Spring 3 Spring 4


Spring Framework 4


XML ?


Annotations and JavaConfig to the Rescue


New in Spring 4


Java 8 Support


@Repeatable

@Fruit(1) @Fruit(2) class Bowl {} !

@Fruits({@Fruit(1), @Fruit(2)}) class Bowl {}


Callback Interfaces

interface RowMapper<T> { T mapRow(ResultSet rs, int rowNum); }


Java EE 7 Support

JMS 2.0

Concurrency Utilities

JTA 1.2 JPA 2.1

Bean!Validation 1.1

Java EE 6 Support


Groovy Bean Definition Language


Core Container Improvements

@Autowired private Foo<Integer> i; !

@Autowired private Foo<String> s;


Web Improvements

@Controller @ResponseBody public Response foo() {}

@RestController public Response foo() {}


WebSockets

spring-websocket !

spring-messaging


Java EE 7


Overview


Java EE 7 Focus Areas


Developer Productivity


Simplicity

@Stateless public class Foo {}


HTML 5


WebSockets

@ServerEndpoint public class Foo {} !

@ClientEndpoint public class FooClient {


Meeting Enterprise Demands


JMS 2.0@Stateless public class Foo { !

@Inject private JMSContext context; !

@Resource(lookup=“jms/MyQueue”) private Queue queue; }


Compatibility


Mixing Spring 4 with Java EE 7


Java EE 7 vs Spring 4


Spring 4 vs Java EE 7


Java EE 7Container

Java EE 7 Application (WAR)

bean

bean

@Inject


Spring 4Container

Spring 4 Application (WAR)

Spring 4 Context

bean

bean

@Autowired


So What about Mixing Spring and Java EE?


Java EE 7 -> Spring 4Container


bean

Spring 4 Context

bean

bean bean

@Inject

@Inject @Autowired


Spring 4 -> Java EE 7Container


bean

Spring 4 Context

bean

beanbean

@Autowired

@Inject@Autowired


DEMO !


Integrate a Spring 4 Componentin

Java EE 7 Application




resource

simple

@Inject

Spring 4 Context

awsome

simple

@Autowired

@Inject




resource awsome

simple

Spring 4 Context

@Autowired@Inject

@Inject




resource awsome

simple simple

@Inject

@Inject @AutowiredX


Integrate a Java EE 7 Componentin

Spring 4 Application




awsome

simple

@Inject

Spring 4 Context

resource

simple

@Autowired

@EJB




awsome

simple

@Inject

resource

Spring 4 Context

@Autowired

@EJB




awsomeresource

Spring 4 Context

@EJB

@Injectsimple

@Autowired

@Autowired


Summary


Spring 4 and Java EE 7solves the same problem


Java EE 7 require less configuration and

dependencies


Spring 4 is more portable


Using Spring 4 from Java EE is easier


Mixing is possible


…but…


Favor one framework over mixing


Sources

https://github.com/ivargrimstad/spring-javaee

https://github.com/ivargrimstad/spring-javaee


cybercom.com

JDD2014: Spring 4, JAVA EE 7 or both? - Ivar Grimstad

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