Introducing Spring Web Services

Transcription

1 Introducing Spring Web Services Arjen Poutsma Spring Web Services Project Lead SpringSource

2 Speaker s qualifications Over ten years of experience in Enterprise Software Development Four years of Web service experience Development lead of Spring Web Services Contributor to various Open Source frameworks: (XFire, Axis2, NEO,...) 2

3 Agenda Building a Service Consuming a Service What s new in Spring-WS 1.5 3

4 Building a Service

5 Building a Service 1. Define the contract 2. Implement the Endpoint 3. Deploy 5

6 Define the Contract Spring-WS uses Contract-first Start with XSD/WSDL Widely considered a Best Practice Solves many interoperability issues Also considered difficult But isn t 6

7 Contract-first in 3 simple steps 1. Create sample messages 2. Infer a contract Trang Microsoft XML to Schema XML Spy 3. Tweak resulting contract 7

8 Sample message <BookHotel xmlns=" hotel"> <Hotel> </Hotel> <name>westin Diplomat</name> <address>3555 S. Ocean Drive</address> <city>hollywood</city> <state>fl</state> <country>usa</country> <checkin> </checkin> <checkout> </checkout> <smoking>true</smoking> <CreditCard> <type>visa</type> <number> </number> <name>john Doe</name> <expirty> </expirty> </CreditCard> </BookHotel> 8

9 Demo Creating a Contract

10 Endpoint Endpoints handle SOAP messages Similar to MVC Controllers Handle input message Call method on business service Create response message 10

11 XML Handling techniques Low-level techniques DOM (JDOM, dom4j, XOM) SAX StAX Marshalling JAXB (1 and 2) Castor XMLBeans JiBX 11

12 JAXB2 JAXB2 is part of Java EE 5 and JDK 6 Uses annotations Generates classes from a schema xjc 12

13 Demo Creating an JAXB2 Endpoint

14 WSDL generation Spring-WS generates WSDL from XSD Based on conventions: Request suffix Response suffix Configurable & overridable 14

15 Demo WSDL generation

16 Other Features Interception mechanism Validation Versioning WS-Security Powerful mapping mechanism Content SOAP Action 16

17 Demo Using endpoint interceptors

18 Consuming a Service

19 WebServiceTemplate WebServiceTemplate is core client-side component Similar to other templates in Spring JdbcTemplate JmsTemplate 19

20 WebServiceTemplate methods sendsourceandreceivetoresult Source input (DOM, stream, SAX, StAX) Result output (DOM, stream, SAX, StAX) marshalsendandreceive JAXB, Castor, XMLBeans, JibX, XStream sendandreceive Callback mechanism 20

21 Demo Using WebServiceTemplate

22 Spring Web Services 1.5

23 Requirements Spring 2.0 or higher Builds on Spring 2.5 model JDK 1.4 or higher Native support for JDK

24 JMS Transport Using BytesMessage Support attachments Conforms to JMS SOAP spec Builds on Spring 2 MessageListenerContainer MessageDriven EJB is also available Requires no Java code changes 24

25 Transport Uses JavaMail Pluggable retrieval strategy Polling (POP3, IMAP) IDLE (certain IMAP servers) Requires no Java code changes 25

26 Demo Using JMS transport

27 Spring Namespaces OXM namespace JAXB 1 and 2 JiBX XMLBeans Spring-WS namespace Many standard <beans> become oneliners 27

28 Demo Namespaces

29 And more! WS-Addressing support OSGi bundles Client-side WS-Security support 29

30 1.5 Release plan 1.5 is released in milestones 1.5 M1 released on the 7 th December M2 8 th February

31 Q & A