Spring Boot + Angular 6 example | Spring Data JPA + REST + PostgreSQL CRUD example
Tags: springboot, springjpa, postgres, angular
Published: 2021-05-12 17:03:46

https://ozenero.com/spring-boot-angular-6-example-spring-data-rest-postgresql-example

Spring Boot + Angular 6 example | Spring Data JPA + REST + PostgreSQL CRUD example

In this tutorial, we show you Angular 6 Http Client & Spring Boot Server example that uses Spring JPA to do CRUD with PostgreSQL and Angular 6 as a front-end technology to make request and receive response.

Related Posts:
- <a href="https://ozenero.com/spring-framework/spring-boot/use-spring-jpa-postgresql-spring-boot">How to use Spring JPA with PostgreSQL | Spring Boot</a>
- <a href="https://ozenero.com/spring-framework/spring-boot/spring-jpa-postgresql-angularjs-example-spring-boot">Spring JPA + PostgreSQL + AngularJS example | Spring Boot</a>

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<h2>I. Technologies</h2>
– Java 1.8
– Maven 3.3.9
– Spring Tool Suite – Version 3.8.4.RELEASE
– Spring Boot: 2.0.3.RELEASE
– Angular 6
- RxJS 6
<h2>II. Overview</h2>
<img src="https://ozenero.com/wp-content/uploads/2017/05/angular-http-service-architecture-1.png" alt="angular-http-service-architecture" width="570" height="542" class="alignnone size-full wp-image-5475" />
<h4>Demo</h4>
<iframe width="853" height="480" src="https://www.youtube.com/embed/Y3lbw1DtaFk?rel=0" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>
<h4>1. Spring Boot Server</h4>
<img src="https://ozenero.com/wp-content/uploads/2018/06/spring-boot-angular-6-spring-rest-api-data-postgresql-spring-server-architecture.png" alt="spring-boot-angular-6-spring-rest-api-data-postgresql-spring-server-architecture" width="700" height="330" class="alignnone size-full wp-image-13166" />
<h4>2. Angular 6 Client</h4>
<img src="https://ozenero.com/wp-content/uploads/2018/06/spring-boot-angular-6-spring-rest-api-data-postgresql-angular-client-architecture.png" alt="spring-boot-angular-6-spring-rest-api-data-postgresql-angular-client-architecture" width="696" height="462" class="alignnone size-full wp-image-13167" />
<h2>III. Practice</h2>
<h4>1. Project Structure</h4>
<h3>1.1 Spring Boot Server</h3>
<img src="https://ozenero.com/wp-content/uploads/2018/06/spring-boot-angular-6-spring-rest-api-data-postgresql-spring-server-structure.png" alt="spring-boot-angular-6-spring-rest-api-data-postgresql-spring-server-structure" width="339" height="363" class="alignnone size-full wp-image-13168" />

- <strong>Customer</strong> class corresponds to entity and table <strong>customer</strong>.
- <strong>CustomerRepository</strong> is an interface extends <strong>CrudRepository</strong>, will be autowired in <strong>CustomerController</strong> for implementing repository methods and custom finder methods.
- <strong>CustomerController</strong> is a REST Controller which has request mapping methods for RESTful requests such as: <code>getAllCustomers</code>, <code>postCustomer</code>, <code>deleteCustomer</code>, <code>deleteAllCustomers</code>, <code>findByAge</code>, <code>updateCustomer</code>.
- Configuration for Spring Datasource and Spring JPA properties in <strong>application.properties</strong>
- <strong>Dependencies</strong> for <strong>Spring Boot</strong> and <strong>PostgreSQL</strong> in <strong>pom.xml</strong>
<h3>1.2 Angular 6 Client</h3>
<img src="https://ozenero.com/wp-content/uploads/2018/06/spring-boot-angular-6-spring-rest-api-data-postgresql-angular-client-structure.png" alt="spring-boot-angular-6-spring-rest-api-data-postgresql-angular-client-structure" width="251" height="547" class="alignnone size-full wp-image-13169" />

In this example, we focus on:
- 4 components: <strong><em>customers-list</em></strong>, <strong><em>customer-details</em></strong>, <strong><em>create-customer</em></strong>, <strong><em>search-customer</em></strong>.
- 3 modules: <strong><em>FormsModule</em></strong>, <strong><em>HttpClientModule</em></strong>, <strong><em>AppRoutingModule</em></strong>.
- <strong><em>customer.ts</em></strong>: class Customer (id, firstName, lastName)
- <strong><em>customer.service.ts</em></strong>: Service for Http Client methods
<h4>2. How to do</h4>
<h3>2.1 Spring Boot Server</h3>
<h4>2.1.1 Dependency</h4>

More at:

https://ozenero.com/spring-boot-angular-6-example-spring-data-rest-postgresql-example

Spring Boot + Angular 6 example | Spring Data JPA + REST + PostgreSQL CRUD example