Book Image

Spring Boot and Angular

By : Devlin Basilan Duldulao, Seiji Ralph Villafranca
Book Image

Spring Boot and Angular

By: Devlin Basilan Duldulao, Seiji Ralph Villafranca

Overview of this book

Angular makes building applications with the web easy and Spring Boot helps get an application up and running using just a few lines of code and minimal configuration. This book provides insights into building full-stack apps using Angular and Spring Boot effectively to reduce overall development time and increase efficiency. You'll start by setting up your CI/CD pipeline and then build your web application’s backend guided by best practices. You'll then see how Spring Boot allows you to build applications faster and more efficiently by letting the Spring Framework and Spring Boot extension do the heavy lifting. The book demonstrates how to use Spring Data JPA and add its dependencies along with Postgres dependencies in the project to save or persist a user's data in a database for future use. As you advance, you'll see how to write tests and test a service using Mockito. Finally, you'll create a CI workflow or pipeline for a Spring Boot and Angular application to enable operations to deliver quality applications faster. By the end of this Spring Boot and Angular book, you'll be able to build a full-stack web application and deploy it through continuous integration and continuous deployment.
Table of Contents (24 chapters)
1
Part 1: Overview of Spring Boot and Angular Development
4
Part 2: Backend Development
12
Part 3: Frontend Development
19
Part 4: Deployment

Writing services

In this section, we will now write the services for our application, but first, let’s discuss the primary purpose of services in Spring Boot. Services are classes where we place all of our business logic; this is where we will write our CRUD functionalities with the help of JPA repositories. In this case, we will not only make our service class but will also create our JPA repository.

JPA repository

As discussed in Chapter 4, Setting Up the Database and Spring Data JPA, the JPA repository is a widely used specification for managing relational data in Java applications. It helps develop Spring by reducing boilerplate code by not implementing read and write operations.

It is simple to create a JPA repository in Spring Boot; having said that, the JPA library provides classes such as CrudRepository that we can use to extend our classes. Let’s make one in our Spring Boot application example. Proceed as follows:

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