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Spring 4, Java EE 7 or Both?Ivar Grimstad

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Contents

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

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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

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Spring Framework 4

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XML ?

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Annotations and JavaConfig to the Rescue

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New in Spring 4

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Java 8 Support

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@Repeatable

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

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

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Callback Interfaces

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

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Java EE 7 Support

JMS 2.0

Concurrency Utilities

JTA 1.2 JPA 2.1

Bean!Validation 1.1

Java EE 6 Support

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Groovy Bean Definition Language

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Core Container Improvements

@Autowired private Foo<Integer> i; !

@Autowired private Foo<String> s;

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Web Improvements

@Controller @ResponseBody public Response foo() {}

@RestController public Response foo() {}

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WebSockets

spring-websocket !

spring-messaging

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Java EE 7

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Overview

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Java EE 7 Focus Areas

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Developer Productivity

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Simplicity

@Stateless public class Foo {}

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HTML 5

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WebSockets

@ServerEndpoint public class Foo {} !

@ClientEndpoint public class FooClient {

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Meeting Enterprise Demands

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JMS 2.0@Stateless public class Foo { !

@Inject private JMSContext context; !

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

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Compatibility

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Mixing Spring 4 with Java EE 7

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Java EE 7 vs Spring 4

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Spring 4 vs Java EE 7

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Java EE 7Container

Java EE 7 Application (WAR)

bean

bean

@Inject

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Spring 4Container

Spring 4 Application (WAR)

Spring 4 Context

bean

bean

@Autowired

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So What about Mixing Spring and Java EE?

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Java EE 7 -> Spring 4Container

Java EE 7 Application (WAR)

bean

Spring 4 Context

bean

bean bean

@Inject

@Inject @Autowired

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Spring 4 -> Java EE 7Container

Spring 4 Application (WAR)

bean

Spring 4 Context

bean

beanbean

@Autowired

@Inject@Autowired

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DEMO !

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Integrate a Spring 4 Componentin

Java EE 7 Application

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Java EE 7 -> Spring 4Container

Java EE 7 Application (WAR)

resource

simple

@Inject

Spring 4 Context

awsome

simple

@Autowired

@Inject

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Java EE 7 -> Spring 4Container

Java EE 7 Application (WAR)

resource awsome

simple

Spring 4 Context

@Autowired@Inject

@Inject

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Java EE 7 -> Spring 4Container

Java EE 7 Application (WAR)

resource awsome

simple simple

@Inject

@Inject @AutowiredX

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Integrate a Java EE 7 Componentin

Spring 4 Application

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Spring 4 -> Java EE 7Container

Spring 4 Application (WAR)

awsome

simple

@Inject

Spring 4 Context

resource

simple

@Autowired

@EJB

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Spring 4 -> Java EE 7Container

Spring 4 Application (WAR)

awsome

simple

@Inject

resource

Spring 4 Context

@Autowired

@EJB

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Spring 4 -> Java EE 7Container

Spring 4 Application (WAR)

awsomeresource

Spring 4 Context

@EJB

@Injectsimple

@Autowired

@Autowired

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Summary

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Spring 4 and Java EE 7solves the same problem

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Java EE 7 require less configuration and

dependencies

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Spring 4 is more portable

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Using Spring 4 from Java EE is easier

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Mixing is possible

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…but…

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Favor one framework over mixing

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Sources

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

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