The plugin specifies the following annotations: By using it, you can omit listing Spring annotations manually in an allOpen block. The kotlin-spring plugin is a wrapper on top of all-open plugin. Specifically, this library add support for introspection of Kotlin method/constructor parameter names, without having to add explicit property name annotation.Īssuming we are using Gradle with Kotlin DSL, including these plugins would looks like:Įnter fullscreen mode Exit fullscreen mode The standard Jackson serializer for Java may not handle Kotlin objects in some cases. jackson-module-kotlin: Java and Kotlin objects have different internal structures.This dependency adds the ability for Spring to work with objects by reflection. Therefore, we have to work with them differently. kotlin-reflect: Spring often uses reflection, for example, to create proxy classes, but Java and Kotlin objects are various.kotlin-stdlib-jdk8: This dependency includes a variant of the standard Java 8 library to Kotlin with the required classes (needed for compatibility of Java and Kotlin).However, Java and Kotlin are different languages, that means a Spring application written in Kotlin requires an extra configuration. Therefore, even though Spring itself is written entirely in Java, Spring applications could be written in Java or/and in Kotlin. As we known, Kotlin has a compiler for the JVM platform, which means all the codes written in Kotlin can run on the JVM.

Spring with kotlin