Angular 4 + Spring WebFlux + Spring Data Reactive MongoDB example | Full-Reactive Angular 4 Http Client – Spring Boot RestApi Server
In this tutorial, we're gonna build a full Reactive Application in which, Spring WebFlux, Spring Data Reactive MongoDB are used for backend, and Angular, RxJS, EventSource are on client side.
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I. Technologies
- Java 1.8
- Maven 3.3.9
- Spring Tool Suite 3.9.0.RELEASE
- Spring Boot 2.0.0.RELEASE
- Angular 4
- RxJS 5.1.0
- MongoDB 3.4.10
II. Overview
1. Full Stack Architecture
2. Reactive Spring Boot Server
2.1 Dependency
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-mongodb-reactive</artifactId> </dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
2.2 Reactive Repository
We just need to create an interface that extends ReactiveCrudRepository to do CRUD operations for a specific type. This repository follows reactive paradigms and uses Project Reactor types (Flux, Mono) which are built on top of Reactive Streams.
import org.springframework.data.repository.reactive.ReactiveCrudRepository;
import reactor.core.publisher.Flux;
public interface ReactiveCustomerRepository extends ReactiveCrudRepository<Customer, String> {
Mono<Customer> findByLastname(String lastname);
Flux<Customer> findByAge(int age);
@Query("{ 'firstname': ?0, 'lastname': ?1}")
Mono<Person> findByFirstnameAndLastname(String firstname, String lastname);
}More at:
Angular 4 + Spring WebFlux + Spring Data Reactive MongoDB example | Full-Reactive Angular 4 Http Client – Spring Boot RestApi Server
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