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

Connecting to a database

We have already configured our PostgreSQL database and initialized our Spring Boot application with the needed dependencies. Now, we will learn how to connect our PostgreSQL to our application. There are two ways we can connect to our database – the first is through Spring JDBC, and the other is Spring Data JPA. Spring Data JPA is the most convenient way to connect to our database, but we will demonstrate both methods in this section.

Configuring the database properties

The first thing we need to do is configure the database properties in our Spring Boot application. We need to specify the server URL of the database, the admin username, and the password by adding the following source code to the application.properties file:

spring.datasource.url=jdbc:postgresql://localhost:5432/springDB
spring.datasource.username=postgres
spring.datasource.password=password

In the preceding example, we can see that we have configured the basic connection...