WebServices REST

Duration : 20 Hrs

This Web Services Using Rest course is planned to provide students with an introduction to Representational State transmit architectural style of application development. The course presents the best practices for development of RESTful applications.

  • 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.
Learning Objectives
  • Be able to describe the interoperable web services architecture, including the roles of SOAP and WSDL in component-based services and XML and HTTP in the REST architecture.
  • 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.
  • Build WSDL-to-Java and Java-to-WSDL services, with equal facility.
  • Apply advanced techniques and best practices including proper exception handling, care around possible polymorphism, and use of context and lifecycle services.
  • 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.
  • Incorporate binary data, such as images, into service and client code.

Server Support   :                  Tomcat or Web Sphere

IDE Support        :                  Eclipse Helios

Chapter 1. Overview of Web Services
  • Why Web Services?
  • Service-Oriented Architecture
  • HTTP and XML
  • SOAP
  • WSDL
  • The SOAP Vision
  • The REST Vision
  • UDDI
  • The WS-I Basic Profile
  • Security
Chapter 2. Web Services for Java EE
  • Hosting Web Services: Scenarios
  • Web Services for Java EE
  • JAX-WS and JAXB
  • Web-Services Metadata
  • WSDL-to-Java and Java-to-WSDL Paths
  • Provider and Dispatch APIs
  • SAAJ and JAXP
  • JAX-RS for Restful Services
  • JAXR
Chapter 3. 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
Chapter 4. The Simple Object Access Protocol
  • Messaging Model
  • Namespaces
  • SOAP over HTTP
  • The SOAP Envelope
  • The Message Header
  • The Message Body
  • SOAP Faults
  • Attachments
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
  • Scope of Code Generation
  • Parameter Order
  • More JAXB: Mapping Collections
  • More JAXB: Mapping Enumerations
  • Applying JAXB Customizations
Chapter 8. Client-Side Development
  • Stubs and Proxies
  • Generated Code
  • Locating a Service
  • Invoking a Service
  • The @WebServiceRef Annotation
Chapter 9. Java-to-WSDL Development
  • Generating the WSDL and Schema
  • The @WebMethod, @XmlParam, and Related Annotations
  • More JAXB: Mapping Inheritance
  • Controlling the XML Model
  • Controlling the WSDL Description
  • JAXB Customizations with @XmlJavaTypeAdapter
Chapter 10. Exception Handling
  • SOAP Faults vs. Java Exceptions
  • Mapping Faults from WSDL
  • Mapping Exceptions from Java
  • JAX-WS Exception API and Handling
  • Client Exception Handling
Chapter 11. 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
Chapter 12. Introduction to REST
  • What is REST
  • Why to go for REST
  • REST vs Conventional Soap Based Webservices
  • Overview of Implementation of REST using Java
Chapter 13  Understanding Components of REST
  • Resource
  • URI
  • HTTP
  • HTTP Methods
  • Important HTTP Response Codes
  • Content Types
Chapter 14  Implementation of REST in java using JAX-RS
  • What is JAX-RS
  • JAX-RS model
  • Hello World with REST
  • JAX-RS annotations
  • HTTP Method Annotations
  • Root Resource Class
  • Parameter Annotations
  • Annotations for producing and consuming webservice
  • Entity Providers
  • MessageBodyWriter
  • MessageBody Reader
  • Response Builders
  • URI Builders
  • Custom Response Codes
  • Exception Handling
  • JAX-RS and EJB
  • Exposing JAX-RS webservice as stateless session bean
  • Callback mechanism for stateless rest webservices


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