Java and Web Services

Course: JWSF

Duration: 3 Days

Level: III

Course Summary

Web Services are the language agnostic, platform independent development methodology for sharing application software components over the Internet (or a local intranet).

Delivering on the promise of true interoperability, the web services paradigm allows organizations to easily retrofit a modern web interface over existing legacy code, allowing them to capitalize on new opportunities and new commercial relationships.

This class introduces the fundamental principles of creating web services with Java and JAX-WS (Java API for XML-Based Web Services). This skills-centered class is delivered using Java 6 and Sun's GlassFish Application Server but can be customized to utilize a number of IDE's and application servers - please contact us for further details, charges and timescales.

To run this class on your own equipment, please note that a minimum of Pentium III 500-MHz system with 512 MB of memory and 700 MB of disk space is required. A Pentium III 1-GHz system with 1024 MB of memory is recommended. Installation software can be downloaded provided as a VMware virtual machine environment.

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Topics Covered In This Course

Introduction to Web Services

Web Services Stack
Basic Web Services Architecture
Benefits of Web Services
WS-I basic profile

Introduction to SOAP, WSDL, and UDDI

WSDL Document
WSDL Interoperability
Structure of a SOAP message
Using SOAP over HTTP
SOAP Processor
Using a registry to publish/discover WSDL
Summary

Messaging styles

RPC-style web service: SOAP Request and SOAP Response
Document-style web service: Asynchronous interaction
B2B interactions
Enforcing business rules using XML Schemas
Summary

WSDL

Structure of WSDL Document
Defining XSD types
WSDL messages
Defining portType
Binding portType to SOAP over HTTP
Defining the service endpoints
Literal vs. Encoded Encoding Style
Declaring faults in WSDL operations
SOAP fault message

Message formats

RPC-encoded WSDL
RPC-encoded SOAP messages
RPC-literal WSDL
RPC-literal SOAP messages
Document-literal WSDL
Document-literal SOAP messages
Document-literal wrapped WSDL
Document-literal SOAP messages
Selecting a message format
Summary

Interoperability Issues

Main sources
Ensuring web services interoperability
Testing for interoperability
Summary

Metro

Web Services Stack
Metro support in GlassFish application server
JAXB: XML schema to Java mapping
JAXB Architecture
JAXB vs. SAX/DOM
JAX-WS: Web Services API
JAX-WS: WSDL-to-Java mapping
JAX-WS: Features
JAX-WS vs. JAX-RPC
Starting from Java implementation class (bottom-up)
Starting from WSDL (top-down)
Summary

Java Beans

Objectives
What is a JavaBean?
JavaBean Example
Bean internals
Integrating Beans and JSP's
Executing a bean
Other Bean Lifecycles
Application bean example
Application bean JSP
Application bean display
Practice - Create and Test a Java Bean
Summary

Service Proxy

Using a proxy to interact with a service
Static stub vs. Dynamic proxy client
JAX-WS: Hiding SOAP complexity
Summary

Developing a bottom up Java EE web service

Java EE container for service endpoints
Configuring GlassFish
Understanding GlassFish
asadmin: administration utility
Service Implementation Bean (SIB)
wsgen tool: Java2WSDL
Generating deployment artifacts
Understanding the generated artifacts
Packaging a servlet endpoint
Packaging the service as a WAR
Accessing the published WSDL
Deploying WAR file to GlassFish
Verifying the deployment
Understanding the generated deployment artifacts
Overriding the endpoint URL
Accessing the overridden URL
Supplying your own WSDL
Summary

Service Endpoint Interface (SEI)

wsimport tool
WSDL2Java
Understanding JAXB-generated classes
Understanding generated SEI: JAX-WS WSDL to Java mapping
SOAP request generated by JAX-WS
Holder classes
Implementing a web service for generated SEI
Packaging service as WAR
Deploying WAR file to GlassFish
Verifying the deployment
Provider vs. Dispatch interfaces
Service class: JAX-WS service client
Creating static Service instance
Dynamically creating and configuring Service instance
Obtaining dynamic proxy instance
Injecting proxy instance
Handling faults
Mapping fault messages to Exceptions
Fault Bean
Returning SOAP faults
Testing for faults
Summary

Developing a Java SE web service

Java SE 6: Support for JAX-WS
Publishing service endpoint using JAX-WS Endpoint API
Writing a SEI and a service class
Using wsgen tool to generate glue code
Writing JSE service client
Invoking published endpoint
Summary

Who Should Take This Course

Developers and web application developers planning to utilise Java Web Services architecture for creating comprehensive multi-tiered software in Java.

Recommended Prerequisites

Some Java programming experience is advised. In addition, a familiarity with XML technologies is recommended.

Training Style

A comprehensive manual is provided to each student. This manual includes copies of all presentation slides used in the delivery of this class.

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Related Courses

Code	Course Title	Duration	Level
JAXIS	AXIS2 - Java Web Services	5 Days	III	Details

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Schedule For This Course
There are currently no public sessions scheduled for this course. We can schedule a private class for your organization just a couple of weeks from now. Or we can let you know the next time we do schedule a public session.

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