Kotlin SpringBoot RestAPI – Bootstrap 4 Image – Jquery

https://grokonez.com/spring-framework/spring-boot/kotlin-spring-boot/kotlin-springboot-restapi-bootstrap-4-image-jquery

Kotlin SpringBoot RestAPI – Bootstrap 4 Image – Jquery

In the tutorial, JavaSampleApproach will show how to show images on web-view from Kotlin SpringBoot RestAPI with Bootstrap 4 Image and Jquery.

I. Technologies

– Java 1.9
– Maven 3.6.1
– Spring Tool Suite – Version 3.9.0.RELEASE
– JQuery
– Bootstrap 4

• Kotlin 1.1.61 – Spring Boot – 1.5.9.RELEASE

  II. Goal

  We create a SpringBoot project as below structure:

We create a Kotlin RestAPI:

@GetMapping(value = "/api/image")
fun getImage(): ResponseEntity{

    val imgFile = ClassPathResource("image/jsa_about_img.png")

    return ResponseEntity
            .ok()
            .contentType(MediaType.IMAGE_JPEG)
            .body(InputStreamResource(imgFile.getInputStream()))
}

We use Bootstrap 4 Image to style data on web-view, with results:

Bootstrap 4 Image provides useful classes to style with images:

• .rounded class adds rounded corners to an image

• .rounded-circle shapes the image to a circle

• .img-thumbnail shapes the image to a thumbnail (bordered)

More at:

https://grokonez.com/spring-framework/spring-boot/kotlin-spring-boot/kotlin-springboot-restapi-bootstrap-4-image-jquery

Kotlin SpringBoot RestAPI – Bootstrap 4 Image – Jquery