Courses Web Services Programming REST Web Services with JAX-RS 1.1 - WebSphere 8.0 / RAD 8.0 Training
Course #:WA2090

Programming REST Web Services with JAX-RS 1.1 - WebSphere 8.0 / RAD 8.0 Training

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This course covers the design principles of REST architecture along with the details of how to implement these services with JAX-RS. This will allow students who take the course to implement RESTful services using Java standards that will be portable to many different Java environments.

Although many of the services in active use are SOAP or at least XML-based, an increasing number of services take a RESTful approach to data transmission. Representational state transfer (REST) is a style of software architecture that differs from the more traditional Remote Procedure Call (RPC) style of data transmission, instead emphasizing the importance of defining and retrieving representations of resources.

Topics
 
  • Primer on REST
  • Working with REST Resources
  • JAX-RS
  • Content Types in JAX-RS
  • REST vs SOAP
  • Building JAX-RS Responses
  • Clients of JAX-RS Services
  • JAX-RS Security

What you will learn
 

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

  • Understand the REST style of software architecture
  • Describe the advantages and disadvantages of applying RESTful design strategies to various scenarios
  • Implement RESTful services using the JAX-RS Java specification
  • Create JAX-RS services that use various types of request/response content
  • Compare and contrast REST with RPC, SOAP, and other similar communication strategies
  • Apply fine-grained control of the responses returned from JAX-RS services
  • Use various techniques to implement clients of RESTful services
  • Apply Java EE security to JAX-RS services

Audience
 

This course is applicable for Architects and Developers that need to design and develop RESTful web services using JAX-RS.

Prerequisites
 

Experience with Java programming is required. Experience with Eclipse/RAD is useful but not required. For those that might need this Java or Eclipse/RAD experience the following course is suggested:

  • WA1278 Introduction to Java Using Eclipse

An understanding of basic web architecture and the HTTP protocol. Prior experience with RPC-style services such as Web services, Java RMI, COM objects, etc. is helpful, but not required.

Duration
  2 days.

Outline of Programming REST Web Services with JAX-RS 1.1 - WebSphere 8.0 / RAD 8.0 Training

Chapter 1. REST Services

  • Many Flavors of Services
  • Understanding REST
  • Principles of RESTful Services
  • REST Resource Examples
  • SOAP Equivalent Examples
  • REST vs SOAP Communication
  • More REST vs SOAP
  • REST vs SOAP Summary
  • Famous RESTful Services
  • Additional Resources
  • Summary

Chapter 2. Introduction to JAX-RS

  • The JAX-RS Specification
  • The Resource Class
  • A Bunch of Annotations
  • @Path
  • Using Path Parameters
  • HTTP Method Binding
  • More Complex Paths
  • Configuring JAX-RS for Deployment
  • Summary

Chapter 3. JAX-RS Data Injection

  • Sources for Injected Data
  • Path Parameters
  • Query Parameters
  • HTML Form Input
  • Cookies
  • Matrix Parameters
  • HTTP Headers
  • Default Values
  • Parameter Conversion
  • Custom Types
  • Summary

Chapter 4. Designing a RESTful Service

  • Introduction
  • The Design Methodology
  • Ingredients of a Service Operation Interface
  • What Constitutes a REST Resource
  • Resource Identifiers
  • MIME Types
  • HTTP Methods
  • Example Operation Interface Document
  • Summary

Chapter 5. JAX-RS Content Types

  • Internet Media Types
  • Use of Media Type in REST
  • The @Consumes Annotation
  • Content Negotiation
  • The @Produces Annotation
  • The MediaType Class
  • JAXB
  • Dynamic Content Negotiation
  • Summary

Chapter 6. Building Complex JAX-RS Responses

  • HTTP Response Status Codes
  • Introduction to the JAX-RS Response Class
  • Using the Response and Response.ResponseBuilder Classes
  • Example: Conditional HTTP GET
  • Returning Cookies
  • Cookies in Response Headers
  • Reading Cookies
  • Returning an Exception
  • ExceptionMappers
  • Summary

Chapter 7. REST vs. SOAP

  • Defining REST
  • The Six REST Architectural Style Constraints
  • The Four REST Interface Constraints
  • Hypermedia Examples
  • Defining SOAP
  • RPC SOAP vs. REST
  • Document SOAP vs. REST
  • Where SOAP Shines
  • Where REST Shines
  • Selecting an Appropriate Solution
  • Summary

Chapter 8. Clients of JAX-RS Services

  • Java Web Service Clients
  • Apache HttpClient
  • More Apache HttpClient Code
  • JAX-RS Implementation Client Libraries
  • RESTEasy Example
  • HATEOAS
  • Building Links with UriBuilder and UriInfo
  • Using Atom Links for State Transitions
  • WADL
  • WADL Example
  • Summary

Chapter 9. Securing JAX-RS Services

  • HTTP Basic Authentication
  • Example Client
  • The WWW-Authenticate and Authorization Headers
  • Java EE Security Roles
  • Integration with Web Container Security
  • Java EE Security Annotations
  • SecurityContext
  • Restrictions Based on Content Type
  • Summary
We regularly offer classes in these and other cities. Atlanta, Austin, Baltimore, Calgary, Chicago, Cleveland, Dallas, Denver, Detroit, Houston, Jacksonville, Miami, Montreal, New York City, Orlando, Ottawa, Philadelphia, Phoenix, Pittsburgh, Seattle, Toronto, Vancouver, Washington DC.
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