Java EE and Spring Framework Shootout

Transcription

1 Java EE and Spring Framework Shootout Rohit Kelapure IBM Advisory Software Engineer, Reza Rahman Independent Consultant, Author, Java EE Expert Presentation can be downloaded from

2 Important Disclaimers THE INFORMATION CONTAINED IN THIS PRESENTATION IS PROVIDED FOR INFORMATIONAL PURPOSES ONLY. WHILST EFFORTS WERE MADE TO VERIFY THE COMPLETENESS AND ACCURACY OF THE INFORMATION CONTAINED IN THIS PRESENTATION, IT IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. ALL PERFORMANCE DATA INCLUDED IN THIS PRESENTATION HAVE BEEN GATHERED IN A CONTROLLED ENVIRONMENT. YOUR OWN TEST RESULTS MAY VARY BASED ON HARDWARE, SOFTWARE OR INFRASTRUCTURE DIFFERENCES. ALL DATA INCLUDED IN THIS PRESENTATION ARE MEANT TO BE USED ONLY AS A GUIDE. IN ADDITION, THE INFORMATION CONTAINED IN THIS PRESENTATION IS BASED ON IBM S CURRENT PRODUCT PLANS AND STRATEGY, WHICH ARE SUBJECT TO CHANGE BY IBM, WITHOUT NOTICE. IBM AND ITS AFFILIATED COMPANIES SHALL NOT BE RESPONSIBLE FOR ANY DAMAGES ARISING OUT OF THE USE OF, OR OTHERWISE RELATED TO, THIS PRESENTATION OR ANY OTHER DOCUMENTATION. NOTHING CONTAINED IN THIS PRESENTATION IS INTENDED TO, OR SHALL HAVE THE EFFECT OF: - CREATING ANY WARRANT OR REPRESENTATION FROM IBM, ITS AFFILIATED COMPANIES OR ITS OR THEIR SUPPLIERS AND/OR LICENSORS 2

3 Copyright and Trademarks IBM Corporation All Rights Reserved. IBM, the IBM logo, and ibm.com are trademarks or registered trademarks of International Business Machines Corp., and registered in many jurisdictions worldwide. Other product and service names might be trademarks of IBM or other companies. A current list of IBM trademarks is available on the Web see the IBM Copyright and trademark information page at URL: 3

4 Outline Evolution of Java EE and Spring Java EE 6 & Spring 3.0, 3.1 highlights Spring 3.1 feature comparison with Java EE 6 CDI and Spring ecosystem Spring and Java EE coexistence Conclusion 4

5 J2EE Java EE Specifications * Introduced in spec.

6 Evolution of J2EE Java EE6 (Dec 09) 6

7 JSR 299 Contexts and Dependency Injection (CDI) Adds dependency injection to JEE and makes it type-safe. Hollywood principle - Don t call us, we will call you No hard coded dependencies on other specifications Assists in unifying the Bean model Well defined contexts, the ability to bind beans statefully to them & manage their lifecycle. Introduces an event notification system to decouple producers & consumers Uses interceptors to foster loose coupling Extend behavior with type safe interceptor bindings Refines interceptors into decorators for finer grained control Integrates with the Unified EL to bridge JSF Enables use of EJB 3.0 components as JSF managed beans Introduces an SPI to extend JEE Roll your own JEE7! Not only an API but also a SPI Rich ecosystem of CDI extensions Adds the Web conversation context Spring does NOT provide support for CDI 7

8 Evolution of Spring [ 1.0, 2.0, 2.5, 3.0, 3.1] 8

9 Spring Framework Lightweight dependency injection Aspect oriented Layered application & container framework Well defined modules on top of the core container NOT an all-or-nothing solution 9

10 Birds Eye View 10

11 Java EE vs. Spring Framework Features/APIs Overview 11

12 Java EE vs. Spring Business Component 12

13 Spring XML for Business Component Injection 13

14 Spring XML for Business Component Injection 14

15 Spring Java Based Configuration 15

16 Spring Java Based Configuration 16

17 Java EE Interceptor vs. Spring Aspects 17

18 Java EE vs. Spring Injection 18

19 Java EE vs. Spring Injection Spring configuration 19

20 JSF 2 vs. Spring MVC Front Controller Facelet Component 20

21 JSF 2 vs. Spring MVC Front Controller Facelet 21

22 JSF 2 vs. Spring MVC Front Controller JSF Event Handler Entity 22

23 JSF 2 vs. Spring MVC Spring MVC JSP 23

24 Spring MVC Configuration 24

25 Spring Controller 25

26 Spring MVC web.xml configuration 26

27 Java EE vs. Spring Scheduling 27

28 Java EE vs. Spring Scheduling 28

29 Java EE vs. Spring Messaging 29

30 Spring JMS Configuration 30

31 Spring Message Producer 31

32 Java EE Message Producer & JMS Abstraction 32

33 Java EE Message Producer & JMS Abstraction 33

34 Hacking the Java EE Platform - CDI Extensions Activated by dropping jars on the application classpath Loaded by the java.util.serviceloader SPI Integrate with container through container lifecycle events by Register additional beans, interceptors and decorators Injecting dependencies into its own objects Introduce custom scope with backing context Augment or override bean annotation-based metadata with other source Tools/utilities, extending Java EE, integration with Java EE APIs, integrating with non-standard APIs, making Java EE features available in non-java EE 34

35 Spring Ecosystem 35

36 CDI Landscape Implementations Portable Extensions Runtimes Weld CanDI Tools 36

37 CDI Ecosystem 37

38 Spring & Java EE Coexistence Integration with Java EE APIs Spring beans can be injected into JSF Managed Beans Spring beans can be referenced in EL with no JSF Backing beans Spring JmsTemplate can be used on top of raw JMS API for convenience Spring Listeners similar to EJB MDBs especially JCA rather than JMS listeners Hibernate validator standardized as Bean Validation (JSR 303) Spring 3 supports excellent bi-directional integration with EJBs CDI and Spring Integration through the Spring Bridge to CDI Native support for Java EE Java EE5 and Java EE6 annotations supported by Spring Spring can use JPA / Hibernate natively Application server integration DataSources can use application server QoS like pooling, transactions, statement caching, debugging, monitoring and security 38

39 Java EE coexistence with Spring 39

40 Birds Eye View 40

41 References Evolution of Java EE Java EE 6 Tutorial Spring Docs Spring Projects Miscellaneous CDI Extensions Migrating Spring to Java EE CDI- Spring Bridge Best practices integrating Spring with WebSphere Application Server What s new in Spring

42 References continued SEAM 3 CODI Weld CanDI OpenWebBeans 42