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

https://grokonez.com/spring-framework/spring-data/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:

I. Technologies

– 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

II. Overview

angular-http-service-architecture

Demo

1. Spring Boot Server

spring-boot-angular-6-spring-rest-api-data-postgresql-spring-server-architecture

2. Angular 6 Client

spring-boot-angular-6-spring-rest-api-data-postgresql-angular-client-architecture

III. Practice

1. Project Structure

1.1 Spring Boot Server

spring-boot-angular-6-spring-rest-api-data-postgresql-spring-server-structure
  • Customer class corresponds to entity and table customer.
  • CustomerRepository is an interface extends CrudRepository, will be autowired in CustomerController for implementing repository methods and custom finder methods.
  • CustomerController is a REST Controller which has request mapping methods for RESTful requests such as: getAllCustomers, postCustomer, deleteCustomer, deleteAllCustomers, findByAge, updateCustomer.
  • Configuration for Spring Datasource and Spring JPA properties in application.properties
  • Dependencies for Spring Boot and PostgreSQL in pom.xml

1.2 Angular 6 Client

spring-boot-angular-6-spring-rest-api-data-postgresql-angular-client-structure

In this example, we focus on:

  • 4 components: customers-list, customer-details, create-customer, search-customer.
  • 3 modules: FormsModule, HttpClientModule, AppRoutingModule.
  • customer.ts: class Customer (id, firstName, lastName)
  • customer.service.ts: Service for Http Client methods

2. How to do

2.1 Spring Boot Server

2.1.1 Dependency

More at:

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

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

#springboot #springjpa #crud #postgresql

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

Sigrid Farrell

1622600862

Angular 12 + Spring Boot + PostgreSQL example: Build CRUD App

In this tutorial, we will learn how to build a full stack Angular 12 + Spring Boot + PostgreSQL example with a CRUD App. The back-end server uses Spring Boot with Spring Web MVC for REST Controller and Spring Data JPA for interacting with PostgreSQL database. Front-end side is made with Angular 12, HTTPClient, Router and Bootstrap 4.

Older versions:

– Angular 10 + Spring Boot + PostgreSQL example: CRUD App

– Angular 11 + Spring Boot + PostgreSQL example: CRUD App

Contents [hide]

#angular #full stack #spring #angular #angular 12 #crud #postgresql #rest api #spring boot #spring data jpa

Sigrid  Farrell

Sigrid Farrell

1622597127

Angular 12 + Spring Boot: CRUD example

In this tutorial, we will learn how to build a full stack Spring Boot + Angular 12 example with a CRUD App. The back-end server uses Spring Boot with Spring Web MVC for REST Controller and Spring Data JPA for interacting with embedded database (H2 database). Front-end side is made with Angular 12, HttpClient, Router and Bootstrap 4.

Run both Project on same server/port:

How to Integrate Angular with Spring Boot Rest API

Contents [hide]

#angular #full stack #spring #angular #angular 12 #crud #h2 database #mysql #postgresql #rest api #spring boot #spring data jpa

Sigrid  Farrell

Sigrid Farrell

1624096385

Spring Boot CRUD Operations

In the video in this article, we take a closer look at the Spring Boot CRUD Operations Example alongside Exception Handling!

In the video below, we take a closer look at the Spring Boot CRUD Operations example with exception handling. Let’s get started!

#spring boot #spring boot tutorial for beginners #crud #crud #crud #spring boot crud operations

I Dev

1608165399

Angular 11 + Spring Boot + PostgreSQL: Build CRUD example

In this tutorial, we will learn how to build a full stack Angular 11 + Spring Boot + PostgreSQL example with a CRUD App. The back-end server uses Spring Boot with Spring Web MVC for REST Controller and Spring Data JPA for interacting with PostgreSQL database. Front-end side is made with Angular 11, HTTPClient & Router.

Angular 11 + Spring Boot + PostgreSQL CRUD example

We will build a full-stack Tutorial Application in that:

  • Each Tutorial has id, title, description, published status.
  • We can create, retrieve, update, delete Tutorials.
  • We can also find Tutorials by title.
  • The images below shows screenshots of our System.

– Add an object:

angular-11-spring-boot-postgresql-example-crud-create-tutorial

– Retrieve all Tutorials:

angular-11-spring-boot-postgresql-example-crud-retrieve-all-tutorial

– Click on Edit button to go to a Tutorial page:

angular-11-spring-boot-postgresql-example-crud-retrieve-one-tutorial

On this Page, you can:

  • change status to Published using Publish button
  • delete the Tutorial using Delete button
  • update the Tutorial details with Update button

angular-11-spring-boot-postgresql-example-crud-update-tutorial

– Search Tutorials by title:

angular-11-spring-boot-postgresql-example-crud-search-tutorial

– This is tutorials table on the PostgreSQL database:

angular-11-spring-boot-postgresql-example-crud-database-table

Angular 11 & Spring Boot PostgreSQL Architecture

This is the application architecture we will build:

angular-11-spring-boot-postgresql-example-crud-architecture

– Spring Boot exports REST Apis using Spring Web MVC & interacts with PostgreSQL Database using Spring Data JPA.
– Angular Client sends HTTP Requests and retrieve HTTP Responses using axios, shows data on the components. We also use Angular Router for navigating to pages.

Video

This is our Angular Spring Boot CRUD application demo and brief instruction, running with PostgreSQL database:

In the video, we use Angular 10, but it has the same logic & UI as Angular version 11 in this tutorial.

For more details, implementation and Github source code please visit:
https://bezkoder.com/angular-11-spring-boot-postgresql/

#spring #angular #spring-boot #postgresql #crud #javascript

le pro

1608213622

Angular 11 Spring Boot PostgreSQL CRUD Example - loizenai.com

Angular 11 Spring Boot PostgreSQL CRUD Example

https://loizenai.com/angular-11-spring-boot-postgresql-crud-example/

Angular 11 Spring Boot PostgreSQL CRUD Example

In the tutorial, I introduce how to create an “SpringBoot Angular Postgresql CRUD Example” with POST/GET/PUT/DELETE requests to SpringBoot RestAPIs.

– Design overview system by Architecture Diagram that includes: Angular Client, SpringBoot RestAPIs, and Postgresql database.
– Implement Angular CRUD Client with Angular built-in HttpClient to communicate with server side.
– Implement SpringBoot RestAPIs that gets data from Postgresql using Spring Data JPA and returns back data as Json format to requested Angular Client.

Overall Angular 11 Spring Boot Postgresql CRUD Architecture Application

Overall Angular 11 Spring Boot Postgresql CRUD Architecture Application

We build backend SpringBoot Application that provides RestAPIs for POST/GET/PUT/DELETE Customer entities and store them in Postgresql/PostgreSQL database.
We implement Angular Application that use Angular HTTPClient to interact (call/receive requests) with SpringBoot backend and display corresponding page view in browser.

Overview Spring Boot CRUD Postgresql Backend Architecture

Overview Spring Boot CRUD Postgresql Backend Architecture

For building RestAPIs in SpringBoot application, we use Spring MVC Web.
For interacting with database Postgresql/PostgreSQL, we use Spring JPA.
We implement RestAPI’s URL in RestAPIController.java file to process bussiness logic.
For manipulating database’s records, we define a JPA model for mapping field data and use a JPA CRUD repository to do CRUD operation with Postgresql/PostgreSQL.

– SpringBoot Project Structure

SpringBoot Project Structure

models package defines Customer model and Message response class.
repository package defines Spring JPA repository class CustomerRepository to do CRUD operation with database.
service package defines a middleware class CustomerServices between Controller and Repository.
controller package defines a RestAPI Controller RestAPIController to handle POST/GET/PUT/DELETE request.

Overview Angular CRUD Architecture Design

Overview Angular CRUD Architecture Design

Angular CRUD Application (in “Angular 11 Spring Boot PostgreSQL CRUD Tutorial”) is designed with 3 main layers:

Service Layer is used to define Angular Common Services and HttpClient Services to interact with RestAPIs
Component Layer is used to define Angular Components to show views in Browser for interacting with Users
Router Layer is used to route URLs mapping with the corresponding Angular Components

Angular Project Structure:

Angular Project Structure:

Angular CRUD Application defines 3 components, 2 services, 1 routers, and 2 data models:

– Components:

add-customer component is used to add a new customer to system
list-customer component is used to show all customers on view pages, delete a customer and update a customer
message component is used to define a view to show logging message on browser
– Services:

customer.service.ts defines POST/GET/PUT/DELETE HTTP requests to SpringBoot RestAPIs with the built-in Angular HttpClient.
message.service.ts defines an array storage to log all messages when Angular CRUD App running

– Router: app-routing.module.ts defines how to map a corresponding Angular component with an URL.

– Models:

customer.ts defines the main data model of our application.
message.ts defines the response data model between SpringBoot and Angular application.

Goal – Angular SpringBoot CRUD Postgresql

– Add new Customer: from Angular to SpringBoot and save to Postgresql.

Angular CRUD App – Add new customers

– List All Customers: from Angular calls SpringBoot RestAPI to get customer from Postgresql.

List All Customers: from Angular calls SpringBoot RestAPI to get customer from Postgresql.

– Details a Customer: from Angular calls get http request from SpringBoot RestAPI to get a record in Postgresql database

– Details a Customer: from Angular calls get http request from SpringBoot RestAPI to get a record in Postgresql database

– Update a Customer: from Angular calls a put http request from SpringBoot RestAPI to update a record in Postgresql database.

– Update a Customer: from Angular calls a put http request from SpringBoot RestAPI to update a record in Postgresql database.

– Delete a Customer: from Angular calls a delete http request from SpringBoot RestAPI to delete a record in Postgresql database.

Angular CRUD SpringBoot Postgresql App – Delete a Customer successfully

– Check database records: do a get request from Angular to SpringBoot RestAPI.

Angular CRUD App – Check database records

Video Guide – Angular SpringBoot CRUD Postgresql Example FullStack DEBUG

https://youtu.be/848fOT3Jt44

Related posts

#angular #spring-boot #postgresql #crud #example