Developing Java Web Services

Course: JAVAWS

Duration: 5 Days

Level: II

Course Summary

A comprehensive look at tools and techniques required to develop interoperable web services using any of the popular development environments and Application Server platforms. Students learn the key standards -- SOAP, WSDL, and the WS-I Basic Profile -- and the Java architecture that has evolved to build interoperable services and clients. JAX-WS is central to the course, and we cover both WSDL-driven and Java-driven development paths, as well as message handlers and attachment support. With the new Provider and Dispatch APIs, it's now much easier to integrate SAAJ, JAXB, and JAXP code into services and clients, and we explore these strategies in depth as well.

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Topics Covered In This Course

Chapter 1. Overview of Web Services

Why Web Services?
Service-Oriented Architecture
HTTP and XML
Simple Object Access Protocol (SOAP)
Web Service Description Language (WSDL)
Universal Description, Discovery and Integration (UDDI)
The WS-I Basic and Related Profiles
REST

Chapter 2. Web Services for Java EE

Hosting Web Services: Scenarios
Invoking Web Services: Scenarios
Web Services for Java EE (WS4JEE)
The Automated Approach: JAX-WS and JAXB
Manual Options: SAAJ and JAXP
Portable Web-Services Metadata
Service Registries: JAXR

Chapter 3. The Simple Object Access Protocol

Messaging Model
Namespaces
SOAP over HTTP
The SOAP Envelope
The Message Header
The Message Body
SOAP Faults
Attachments

Chapter 4. The Java API for XML Binding

The Need for Data Binding
XML Schema
Two Paths
JAXB Compilation
Mapping Schema Types to Java
Java-to-XML Mapping Using Annotations
Marshaling and Unmarshaling
Working with JAXB Object Models
In-Memory Validation

Chapter 5. Web Services Description Language

Web Services as Component-Based Software
The Need for an IDL
Web Services Description Language
WSDL Information Model
The Abstract Model -- Service Semantics
Message Description
Messaging Styles
The Concrete Model -- Ports, Services, Locations
Extending WSDL -- Bindings
Service Description

Chapter 6. The Java API for XML-Based Web Services

Two Paths
How It Works: Build Time and Runtime
The Service Endpoint Interface
Working from WSDL
Working from Java
RPC and Document Styles
One-Way Messaging
Binary Protocols

Chapter 7. WSDL-to-Java Development

The @WebService Annotation
Generated Code
Compilation and Assembly
Deployment
Runtime Behavior
Scope of Code Generation
More JAXB: Mapping Collections
More JAXB: Mapping Enumerations

Chapter 8. Client-Side Development

Stubs and Proxies
Generated Code
Locating a Service
Invoking a Service

Chapter 9. Java-to-WSDL Development

The @WebMethod, @XmlParam, and Related Annotations
Scope of Code Generation
More JAXB: Mapping Inheritance
Controlling the XML Model
Controlling the WSDL Description

Chapter 10. JAX-WS Best Practices

Which Way to Go?
Interoperability Impact
Portability Impact
Polymorphism in Web Services
Web Services as Java EE Components
Lifecycle Annotations
Context Interfaces
The @WebServiceRef Annotation

Chapter 11. Provider and Dispatch APIs

Stepping Down
The Provider
Interface
Implementing a Provider
JAXB Without WSDL
Integrating JAXP
The Dispatch
Interface
Building Clients

Chapter 12. The SOAP with Attachments API for Java

The SAAJ Object Model
Parsing a SOAP Message
Reading Message Content
Working with Namespaces
Creating a Message
Setting Message Content

Chapter 13. Message Handlers

Handling SOAP Headers
Servlet Endpoint Context
MessageContext and SOAPMessageContext
Message Handlers and Handler Chains
Processing Model and Patterns
Client-Side Handlers

Chapter 14. Handling Binary Content

The WS-I Attachments Profile
Using base64Binary
MIME Attachments
JAX-WS Support
MTOM and XOP
SAAJ Support

What You Can Expect

On completion of this course, students should expect to 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.
Expose session beans as web services.
Incorporate binary data, such as images, into service and client code.

Recommended Prerequisites

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

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Related Courses

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JAVAF	Fundamentals of Java Development	5 Days	I	Details
RWSJE	RESTful Web Services Development	5 Days	I	Details
RESTWSJ	RESTful Web Services Development with Java	3 Days	I	Details
JAVAA	Advanced Java Topics	5 Days	I	Details
JAVAXML	Development With Java's XML APIs	2 Days	II	Details
WSDVJ	Web Services Development in Java	5 Days	II	Details
SOAPWS	Programming SOAP Web Services With JAX-WS	5 Days	II	Details
JAXIS	AXIS2 - Java Web Services	5 Days	III	Details

Every student attending a Verhoef Training class will receive a certificate good for $100 toward their next public class taken within a year.

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Schedule For This Course
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