Jakarta EE Servlets

Course details

In this course, Kevin Bowersox provides you with an understanding of Jakarta servlets and how they are used to build web-based systems with Java. Kevin covers important topics like: the concepts behind why servlets are used and how they relate to other web frameworks; the key interfaces within the Jakarta EE servlet specification; creating and configuring a project that uses servlet technologies; how to process web requests using servlets; and how to augment web request processing with filters. Plus, he shares common pitfalls to avoid when using servlets.

Concepts

Introduction

Jakarta Servlets - Building amazing web-based systems with Java

Getting Started with Jakarta Servlets

Developing web-based systems with Servlets
Servlet containers
Standalone vs. embedded containers
Setting up your development environment
Running an embedded container
Installing a standalone Servlet container
H+ Sport project
Running Servlets in a standalone container

Handling Web Requests with Servlets

HTTP request messages
Mapping requests to a Servlet
Advanced Servlet mappings
Request handler methods
Obtaining data from query parameters
Obtaining data from the path
Obtaining data from headers
Obtaining form data from the request body
Obtaining JSON data from the request body
Challenge - Handling Servlet requests
Solution - Handling Servlet requests

Returning Responses from Servlets

HTTP response messages
Building a response body
Setting response status codes
Returning response headers
Challenge - Creating Servlet responses
Solution - Creating Servlet responses

Filtering, Error Handling, and Dispatching in Servlets

Advanced request-handling techniques
Filters
Forwarding requests
Redirecting a request
Handling errors in Servlets

Servlet Configuration and Deployment

Configuration with Servlet initialization parameters
Configuration with context parameters
Setting up the host environment
Creating a WAR file
Deploying Servlets to a standalone container

Conclusion

Next steps