Mastering Spring Boot Interceptors: Comprehensive Guide with Real-World Examples and Interview Questions

Spring Boot Interceptors are part of the HandlerInterceptor interface, which provides methods to intercept HTTP requests at different stages: pre-handle, post-handle, and after-completion. They act as middleware to process the request before reaching the controller and the response after controller processing.

Key Methods:

• preHandle(): Executed before the request reaches the controller.
• postHandle(): Called after the controller processes the request but before the response is sent.
• afterCompletion(): Runs after the response is completed, useful for cleanup tasks.

Mastering Spring Boot Interceptors: Comprehensive Guide with Real-World Examples and Interview Questions

Message to Readers:

If you enjoyed this content, please consider giving it a clap and following me on Medium for more articles on Java, Spring Boot, and microservices. You can find my Medium page here: Follow Me.

I value your feedback and suggestions, as they motivate me to create even better content. Feel free to leave a comment, ask questions, or share your thoughts — I’d love to hear from you!

Table of Contents

1. Introduction to Spring Boot Interceptors