Spring WebClient with Spring Webflux RestAPIs | SpringBoot 2

Spring-WebClient-with-Spring-Webflux-RestAPIs-SpringBoot-2

In the tutorial, JavaSampleApproach will introduce new client side Spring WebClient that offers a fully non-blocking and reactive alternative to the RestTemplate.

Related posts:
SpringBoot WebFlux Functional RestAPIs
SpringBoot WebFlux Annotation-based RestAPIs
How to use Spring RestTemplate client for consuming Restful WebService
SpringBoot WebFlux Test

I. Technologies

– Java: 1.8
– Maven: 3.3.9
– Spring Tool Suite: Version 3.9.0.RELEASE
– Spring Boot: 2.0.0.M4
– Spring Boot Starter Webflux

II. Spring WebClient

As mentioned above, reactive WebClient is an alternative solution to the RestTemplate for fully non-blocking and reactive.
If we have Spring WebFlux on classpath, we can use WebClient to work with remote RestAPIs.

III. Practice

In the tutorial, we create 2 SpringBoot projects for working {SpringWebClient, SpringWebFluxFunction-Server}:

spring webclient flux server- projects structure

Step do to:
– Create SpringBoot projects
– Create data model
– Implement Spring WebFlux server
– Implement Spring WebClient
– Run and check results

1. Create SpringBoot projects

Using SpringToolSuite, create 2 SpringBoot projects {SpringWebClient, SpringWebFluxFunction-Server} with spring-boot-starter-webflux dependency:

2. Create data model

Create data model Customer for 2 projects:

3. Implement Spring WebFlux server

Refer at: SpringBoot WebFlux Functional RestAPIs

3.1 Implement Customer repository

– Create a interface CustomerRepository:

– Implement CustomerRepositoryImpl:

3.2 Implement WebFlux functional

– define RouterFunction:

– Implement CustomerHandler:

4. Implement Spring WebClient
4.1 Implement WebClient transporter

– Define interface WebClientTransport:

– Implement WebClientTransportImpl:

4.2 Implement WebClient Application

– Open application.properties, configure: server.port=8081

5. Run and check results

Build and Run the SpringWebFluxFunction-Server project then SpringWebClient project by commandlines {mvn clean install, mvn spring-boot:run}.

-> Console logs from SpringWebClient:

IV. Sourcecode

SpringWebClient
SpringWebFluxFunctional

By grokonez | September 30, 2017.

Last updated on April 8, 2019.



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1 thought on “Spring WebClient with Spring Webflux RestAPIs | SpringBoot 2”

  1. Many thanks for this post on Spring webflux. Best one on the net. Cleared up some things for me. Only example that shows post, put, and get.

    Thanks.

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