Angular SpringBoot CRUD MySQL Example

https://loizenai.com/angular-springboot-crud-mysql-example/

Angular SpringBoot CRUD MySQL Example

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

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

Overall Angular SpringBoot MySQL CRUD Architecture Application

• We build backend SpringBoot Application that provides RestAPIs for POST/GET/PUT/DELETE Customer entities and store them in MySQL/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 SpringBoot CRUD MySQL Backend Architecture

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

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

Angular CRUD Application 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 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 MySQL

Add new Customer: from Angular to SpringBoot and save to MySQL.

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

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

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

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

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

Video Guide Angular SpringBoot CRUD MySQL Example FullStack DEBUG

https://youtu.be/848fOT3Jt44

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