Java Web Services on WebSphere

Delivery Options

• Customized Onsite Training (5 days): Request a Proposal

Class Description

Class Overview

Class Goals

• Be able to describe the interoperable web services architecture, including the roles of SOAP and WSDL.
• Understand the importance of the WS-I Basic Profile for interoperable web services.
• Build JAX-WS services and clients that take full advantage of the automated data binding of JAXB.
• Use lower-level SOAP and XML APIs for services and/or clients.
• Customize data binding by specifying specific type mappings or altering method or parameter names.

Class Outline

1. Overview of Web Services
   1. Why Web Services?
   2. Service-Oriented Architecture
   3. HTTP and XML
   4. Simple Object Access Protocol (SOAP)
   5. Web Service Description Language (WSDL)
   6. Universal Description, Discovery and Integration (UDDI)
   7. The WS-I Basic and Related Profiles
   8. REST
2. Web Services for Java EE
   1. Hosting Web Services: Scenarios
   2. Invoking Web Services: Scenarios
   3. Web Services for Java EE (WS4JEE)
   4. The Automated Approach: JAX-WS and JAXB
   5. Manual Options: SAAJ and JAXP
   6. Portable Web-Services Metadata
   7. Service Registries: JAXR
3. The Simple Object Access Protocol
   1. Messaging Model
   2. Namespaces
   3. SOAP over HTTP
   4. The SOAP Envelope
   5. The Message Header
   6. The Message Body
   7. SOAP Faults
   8. Attachments
4. The Java API for XML Binding
   1. The Need for Data Binding
   2. XML Schema
   3. Two Paths
   4. JAXB Compilation
   5. Mapping Schema Types to Java
   6. Java-to-XML Mapping Using Annotations
   7. Marshaling and Unmarshaling
   8. Working with JAXB Object Models
   9. In-Memory Validation
5. Web Services Description Language
   1. Web Services as Component-Based Software
   2. The Need for an IDL
   3. Web Services Description Language
   4. WSDL Information Model
   5. The Abstract Model -- Service Semantics
   6. Message Description
   7. Messaging Styles
   8. The Concrete Model -- Ports, Services, Locations
   9. Extending WSDL -- Bindings
   10. Service Description
6. The Java API for XML-Based Web Services
   1. Two Paths
   2. How It Works: Build Time and Runtime
   3. The Service Endpoint Interface
   4. Working from WSDL
   5. Working from Java
   6. RPC and Document Styles
   7. One-Way Messaging
   8. Binary Protocols
7. WSDL-to-Java Development
   1. The @WebService Annotation
   2. Generated Code
   3. Compilation and Assembly
   4. Deployment
   5. Runtime Behavior
   6. Scope of Code Generation
   7. More JAXB: Mapping Collections
   8. More JAXB: Mapping Enumerations
8. Client-Side Development
   1. Stubs and Proxies
   2. Generated Code
   3. Locating a Service
   4. Invoking a Service
9. Java-to-WSDL Development
   1. The @WebMethod, @XmlParam, and Related Annotations
   2. Scope of Code Generation
   3. More JAXB: Mapping Inheritance
   4. Controlling the XML Model
   5. Controlling the WSDL Description
10. JAX-WS Best Practices
    1. Which Way to Go?
    2. Interoperability Impact
    3. Portability Impact
    4. Polymorphism in Web Services
    5. Web Services as Java EE Components
    6. Lifecycle Annotations
    7. Context Interfaces
11. Provider and Dispatch APIs
    1. Stepping Down
    2. The Provider<T> Interface
    3. Implementing a Provider
    4. JAXB Without WSDL
    5. Integrating JAXP
    6. The Dispatch<T> Interface
    7. Building Clients
12. The SOAP with Attachments API for Java
    1. The SAAJ Object Model
    2. Parsing a SOAP Message
    3. Reading Message Content
    4. Working with Namespaces
    5. Creating a Message
    6. Setting Message Content
13. Message Handlers
    1. Handling SOAP Headers
    2. Servlet Endpoint Context
    3. MessageContext and SOAPMessageContext
    4. Message Handlers and Handler Chains
    5. Processing Model and Patterns
    6. Client-Side Handlers

Class Materials

All students receive a course manual or book and all the class examples.

Students in private onsite classes will also receive:

• Technical Reference Library

Class Prerequisites

Experience in the following areas is required:

• Strong Java programming skills are essential
• Students must be able to read XML documents and to write well-formed XML by hand
• Experience with other Java EE standards, especially servlets and JSP, will be very helpful in class, but is not strictly required.

Technical Requirements

Our computer technical requirements and setup process is easy, with support just a click away.

• Course technical requirements and setup instructions.

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