Java REST Essentials | RESTful Services in Java

Course Objectives

This “skills-centric” course is about 50% hands-on lab and 50% lecture, designed to train attendees in core RESTful development skills, coupling the most current, effective techniques with the soundest industry practices. Working within in a hands-on learning environment, guided by our expert team, attendees will learn to:

• Understand and apply the basic concepts of REST
• Understand and intelligently discuss the similarities and differences between RESTful services and SOAP-based services
• Appreciate the security concerns associated with RESTful services
• Design, develop, and deploy real-world RESTful Services
  • Effectively define and design endpoints
  • Work with query parameters
  • Determine the best format to use for exchanging data
  • Understand the principles associated with HTTP methods and how to stay congruent to them
  • Extend the semantics of the RESTful service beyond the HTTP methods
• Implement RESTful services using JAX-RS to
  • Handle various HTTP methods
  • Use different approaches for parameters
  • Deal with content negotiation
  • Work with different data formats including XML and JSON
  • Handle exceptions
• Implement RESTful Java clients
  • Develop JAX-RS Java clients using the JAX-RS 2.0 Client API
  • Manage different Web targets
  • Deal with content negotiation on the client
  • Work with different data formats including XML and JSON
  • Properly process server responses
• Implement JAX-RS Filters and Interceptors
  • Intercept and manipulate service requests and responses
  • Dynamically register interceptor to resources
  • Understand the concept of NameBinding
• Discover asynchronous JAX-RS processing
  • Implement an asynchronous JAX-RS service endpoint
  • Register response listeners

Need different skills or topics?  If your team requires different topics or tools, additional skills or custom approach, this course may be further adjusted to accommodate.  We offer additional Services, Microservices, programming, design and security courses which may be blended with this course for a track that best suits your development objectives. Our team will collaborate with you to understand your needs and will target the course to focus on your specific learning objectives and goals.

Course Prerequisites

This is an intermediate level training course, designed for experienced Java developers and architects who need to identify, design, and implement web services. We will explore and apply the terminology, the specification, the processes and technologies specific to web services.  Students should have at least a year of practical development experience with Java and servlets, and should be familiar with XML and JSON.

Please see the Related Courses tab for specific Pre-Requisite courses, Related Courses that offer similar skills or topics, and next-step Learning Path recommendations.

Course Agenda

Please note that this list of topics is based on our standard course offering, evolved from typical industry uses and trends. We will work with you to tune this course and level of coverage to target the skills you need most.

Session: Working with REST

Lesson: Overview of REST

• Representational State Transfer
• REST Characteristics
• REST Elements
• REST Architectural Principles
• REST and HTTP
• REST/HTTP: Representation-Oriented
• REST Design Principles
• Tutorial: Working with Eclipse (JEE Version) and Apache TomEE 7x

Lesson: Designing RESTful Services

• Effectively Designing RESTful Services
• Best Practices for Endpoint Definition
• Using Query Parameters
• Working with HTTP GET and DELETE
• Working with HTTP PUT
• Working with HTTP POST
• Best Practices for HTTP Methods
• Handling Additional Operations

Session: JAX-RS

Lesson: Introduction to JAX-RS

• Understand some of the features of the JAX-RS framework
• Be familiar with process for implementing RESTful services
• Be able to develop and deploy a simple REST service
• How JAXB supports XML interoperability
• How to use JAXB with JAX-RS

Lesson: @Path: URI Matching

• JAX-RS mechanisms for mapping URIs to resource
• How to use @Path expressions to map URIs
• How to use @Path expressions to extract values from URIs

Lesson: JAX-RS Content Negotiation

• JAX-RS built-in content handler
• How to inject content handlers into service
• Basics of working with JSO
• Capabilities for HTTP content negotiation
• JAX-RS mechanisms for supporting content negotiation

Lesson: JAX-RS Request and Response

• How information about the request can be injected into the resource
• The different injection targets of the resource
• How to build a ‘complex’ response
• How to respond to a HTTP POST
• The JAX-RS exception hierarchy
• How exceptions can be mapped to response codes

Lesson: JAX-RS Client API

• Be able to invoke a JAX-RS service using the client API
• Understand the purpose of the WebTarget object
• Be able to dynamically resolve path template values
• Understand some of the return codes
• Be able to filter client request and server responses

Lesson: JAX-RS Filters and Interceptors

• Understand the purpose of JAX-RS filters
• Be able to develop interceptors
• Be able to define global filters and interceptors
• Dynamically add interceptors and filters
• Understand NameBinding

Lesson: Asynchronous JAX-RS

• Be able to make asynchronous requests
• Develop resources to process request asynchronously

Course Materials

Each student will receive a Student Guide with course notes, code samples, software tutorials, diagrams and related reference materials and links (as applicable). Our courses also include step by step hands-on lab instructions and and solutions, clearly illustrated for users to complete hands-on work in class, and to revisit to review or refresh skills at any time. Students will also receive the project files (or code, if applicable) and solutions required for the hands-on work.