Pro RESTful APIs with Micronaut: Build Java-Based Microservices with REST, JSON, and XML

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2025

S. PatniPro RESTful APIs with Micronauthttps://doi.org/10.1007/979-8-8688-1243-9_9

9. API Security

Sanjay Patni¹  

(1)

Milpitas, CA, USA

 

In this chapter, we will start with the review of the OAuth 2 standard for securing RESTful APIs, then review JWT implementation, and do an exercise on implementing basic security with Micronaut.

API Security—OAuth 2

OAuth 2 is a standard for delegating authorization for accessing resources by HTTP.

With OAuth, we can give access rights to the mobile apps without giving a password. Instead, a token is handed over to the application. A token represents access rights for the subset of data for a short time frame. Please refer to ...