Jakarta EE REST com JAX-RS

Master RESTful Web Services with JAX-RS

Unlock the power of RESTful APIs! This course provides comprehensive knowledge and practical skills for developing robust web services using the Java EE specification JAX-RS. Learn to design, build, and test RESTful web services for various applications.

Course Objectives:

• Gain conceptual and practical understanding of RESTful web service development.
• Master JAX-RS specifications for building and consuming REST APIs.
• Develop skills in designing and implementing RESTful architectures.

Course Content:

• Introduction to Web Services:
  • What are web services and their purpose?
  • When to use web services: real-world scenarios and use cases.
  • Architectures: B2B, B2C, and Mobile web service architectures.
  • Layers and responsibilities in web service design.
  • Key benefits of using web services.
• REST Principles & Design:
  • What is REST? Understand the core concepts and philosophy.
  • The RESTful approach: principles for building scalable and maintainable APIs.
  • The five principles of REST:
    • Unique Identifiers for Resources
    • HTTP Verbs for Actions and Responses
    • Multiple Representations of Resources
    • Stateless Communication
    • Building Links Between Resources
  • HTTP Protocol: Methods and Codes – mastering the foundation of RESTful communication.
  • REST Stateless vs. Stateful architectures.
• Java REST Products:
  • Explore various Java REST frameworks.
  • JAX-RS Providers: In-depth look at Jersey JAX-RS.
  • Environment Setup:
    • Java download and installation.
    • Maven configuration for project management.
  • Hands-on Exercises: Practical exercises to solidify your understanding.
• WADL (Web Application Description Language):
  • Understand WADL for describing RESTful APIs.
  • Practical exercises using WADL.
• JAX-RS Annotations:
  • Explore standard JAX-RS annotations and their usage.
  • Practical exercises with JAX-RS annotations.
• JAX-RS & Data Formats:
  • Working with XML and JSON in JAX-RS.
  • How to use JSON effectively in your APIs.
  • Practical exercises with JAX-RS and JSON.
• JAX-RS Client API:
  • Consuming RESTful APIs with the JAX-RS Client API.
  • Practical exercises using the JAX-RS Client API.
• Advanced JAX-RS Annotations:
  • Explore more advanced JAX-RS annotations and their applications.
  • Practical exercises with advanced annotations.
• Dynamic Responses with JAX-RS:
  • Creating dynamic responses in your RESTful APIs.
  • Practical exercises with dynamic responses.
• Exception Handling:
  • Mapping exceptions to RESTful responses for robust error handling.
  • Practical exercises on exception handling.
• Complete CRUD REST Implementation:
  • Building a complete CRUD (Create, Read, Update, Delete) REST API with server and client examples.
• JAX-RS Filters:
  • What are Filters? Understand the concept and purpose of filters.
  • Server Request Filters: Modify incoming requests.
  • Server Response Filters: Modify outgoing responses.
  • Client Request Filters: Modify outgoing requests.
  • Client Response Filters: Modify incoming responses.
  • Practical exercises with various filter types.
• JAX-RS Interceptors:
  • What are Interceptors? Understand the concept and purpose of interceptors.
  • Server Write Interceptors: Modify server-side writes.
  • Server Read Interceptors: Modify server-side reads.
  • Client Write Interceptors: Modify client-side writes.
  • Client Read Interceptors: Modify client-side reads.
  • Practical exercises with various interceptor types.
• Postman for REST Testing:
  • Using Postman to test and debug your REST APIs.
  • Practical exercises with Postman.
• Deployment Options:
  • Testing with a single-server environment (mono).
  • Deploying to a test environment using Servlets and EJBs.
• General Tips & Tricks:
  • Integrating JAX-RS with Java Bean Validation.