Developing Web Services using WebLogic

Overview

This course will integrate a combination of instructor-led discussions and interactive workshops to demonstrate the capabilities of Web Service within ecommerce applications. This seminar will illustrate the building, testing and deployment of Web Services, explore their fundamental capabilities, utilization of SOAP and XML, role of WSDL (Web Services Descriptive Language), use of UDDI registries and the development of JavaBeans and EJBs as Web Services.

Prerequisites

Each student should have a basic knowledge of JDeveloper and have been exposed to the Java programming language.

Class Format

Lecture and Lab

Audience

Java developers, web page designers and other professionals that will be developing Web Services using BEA WebLogic.

Learning Objectives

After completing this course, the student should be able to:

Understand the architecture of Service Oriented Architecture

Depict the role of the Web Server and Application Server

Explain the roles of SOAP and XML

Demonstrate the conversion of JavaBeans and EJBs to function as Web Services

Illustrate the use of Web Services Descriptive Language (WSDL)

Depict the SOAP processing architecture: messages and bindings

Understand the architecture of JAX-RPC, JAX-WS and JAXM

Develop Web Service from a JavaBean using WebLogic Workshop

Depict process of serialization in SOAP and compare to J2EE equivalent

Demonstrate the development of Web Service client applications

Test Web Services application using BEA IDE tools

Depict the UDDI registry model architecture

Illustrate BEA Web Services Gateway architecture

Illustrate the deployment of Web Services to the WebLogic Application Server environment

Course Duration

4 Days

Course outline

Web Services Overview

Service Oriented Architecture
o UDDI Registries
o Service Requestor
o Web Service
B2C vs B2B
Defining XML
SOAP
o Architecture
o Messages
Web Services Descriptive Language
o Definition
o Usage

Web Services Implementation

Components
o SOAP
o XML
o UDDI
o WSDL
J2EE Integration
ECommerce usage
o Hosted
o Published
o Discovery
o Usage
IDE Development

Introduction to SOAP

Overview
SOAP Messages
o Envelope
o Header
o Body
SOAP transport protocols
o HTTP
o FTP
o SNMP
Error processing
Attachments
Bindings

Illustrating Apache Axis

Overview of Axis
Axis architecture
o Handlers and message paths
o Server message path
o Client message path
Message Flow subsystem
o Handlers and chains
o Message Contexts
o Engine
Message Models
o SOAP Model
o Message elements
o Deserialization
Encoding

Web Services Development

IDE Tool support
Web Services wizard
o Deployment settings
o Java to XML mappings
o Binding Proxy generation
o XML to Java mappings
o SOAP Binding Mapping configuration
Generated files
o Client
o Proxy
Deployment
o Testing/Debugging
o Publishing
Tracing SOAP Messages

Web Services Descriptive Language

Illustrate role of WSDL
Components
o Types
o Porttypes
o Binding
o Service
Attachment support
WSDL and the client
Creation via IDE (Top/Down)

Building Web Services Clients

Depict client requirements
Construct Web Service client using SOAP
Client development
o Use of WSDL
o Wizards
o Source
Depict functions of a Web Service proxy

J2EE Packaging and Deployment

J2EE Application packaging
Packaging WAR files
Class loading policies
Enterprise application installation
Deployment Descriptors
o web.xml
o ejb-jar.xml
o webservices.xml
Enterprise Application (EAR) deployment
Web Service requirements
o Runtime files
o Application Server impact
o Java client requirements

Building Web Services Clients

Web Service from URL
o Servlet Overview
o Create URL Web Service
o Generated files
o Testing
Web Service from EJB
o Session vs Entity EJBs
o Session EJBs
- Stateless
Stateful
o EJB Lifecycles
o Web Service from EJB
Files created

Overview of UDDI Registries

Static vs dynamic Web Services
Web Services discovery
o Global
o Private
o Business Partners
UDDI Versions
UDDI Models
o White
o Yellow
o Green
Use of tModels
UDDI Data Models
WSDL and UDDI
o Illustration
o Associate WSDL with Web Service
o Locate Web Services for WSDL document

Application Server Deployment

Web Services Gateway
o Service Mapping
o Transformation
o UDDI Publication and Lookup
o Security
Handling inbound requests
Handling outbound requests
Protocol transformation
Non-SOAP services access
Deployment
o J2EE Packaging
o Use of EAR files