Kotlin – RestTemplateClient Send/Recieve Base64 File/Image to SpringBoot server

In the tutorial, we guide how to post/get base64 files/images by RestTemplateClient to SpringBoot server with Kotlin language.

I. Technologies

– Java 1.8
– Kotlin 1.2.20
– Spring Tool Suite – Version 3.9.2.RELEASE
– Spring Boot – 1.5.10.RELEASE
– Apache Maven 3.5.2

II. Goal

We create 2 Kotlin SpringBoot projects {KotlinRestfulAPIs, KotlinRestTemplateClient} as below:

Kotlin Springboot post-get base64 file image with RestTemplateClient - projects

KotlinRestfulAPIs project provides 2 RestAPIs:

KotlinRestTemplateClient uses org.springframework.web.client.RestTemplate to post/get base64 file/image to KotlinRestfulAPIs server:

III. Implementation

1. Create Kotlin SpringBoot projects

Use SpringToolSuite to create 2 Kotlin projects {KotlinRestfulAPIs, KotlinRestTemplateClient} with dependencies:

2. Create data model

3. Implement Kotlin Encode/Decode Base64 file/image

4. Create RestAPIs server

5. Create RestTemplateClient
5.1 POST/GET Entities with RestTemplate

5.2 Implement Post/Get Application

6. Run & Check results

Run KotlinRestfulAPIs & KotlinRestTemplateClient

-> Logs from KotlinRestTemplateClient:

-> Logs from KotlinRestfulAPIs:

IV. Sourcecode


By grokonez | February 25, 2018.

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