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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



 
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