Book Image

Spring: Microservices with Spring Boot

By : Ranga Rao Karanam
Book Image

Spring: Microservices with Spring Boot

By: Ranga Rao Karanam

Overview of this book

Microservices helps in decomposing applications into small services and move away from a single monolithic artifact. It helps in building systems that are scalable, flexible, and high resilient. Spring Boot helps in building REST-oriented, production-grade microservices. This book is a quick learning guide on how to build, monitor, and deploy microservices with Spring Boot. You'll be first familiarized with Spring Boot before delving into building microservices. You will learn how to document your microservice with the help of Spring REST docs and Swagger documentation. You will then learn how to secure your microservice with Spring Security and OAuth2. You will deploy your app using a self-contained HTTP server and also learn to monitor a microservice with the help of Spring Boot actuator. This book is ideal for Java developers who knows the basics of Spring programming and want to build microservices with Spring Boot. This book is embedded with useful assessments that will help you revise the concepts you have learned in this book. This book is repurposed for this specific learning experience from material from Packt's Mastering Spring 5.0 by Ranga Rao Karanam.
Table of Contents (7 chapters)

Securing REST Services with Spring Security

All the services we have created up until now are unsecured. A consumer does not need to provide any credentials to access these services. However, all services in the real world are usually secured.

In this section, we will discuss two ways of authenticating REST services:

  • Basic authentication

  • OAuth 2.0 authentication

We will implement these two types of authentication with Spring Security.

Spring Boot provides a starter for Spring Security using spring-boot-starter-security. We will start with adding Spring Security starter to our pom.xml file.

Adding Spring Security Starter

Add the following dependency to your file pom.xml:


The Spring-boot-starter-security dependency brings in three important Spring Security dependencies:

  • spring-security-config

  • spring-security-core

  • spring...