17 April 2024

Kotlin 을 활용 하여 개발하는 도중 ObjectMapper 로 JsonString을 deserialize 할때 아래와 같은 오류가 발생 했다. com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `com.kc.noti.dist.RedisTest$Hello` (no Creators, like default constructor, exist): cannot deserialize from Object value (no delegate- or property-based Creator) at [Source: (String)"{"name" : "Kotlin", "value" : "Hello"}"; line: 1, column: 2]...

29 June 2019

Hello World 스터디 환경 IDE : IntelliJ OS : Windows10 JVM : JDK1.8 프로젝트 생성 File -> new Project -> Kotlin/JVM Hello World src -> new File -> Kotlin file / class app.kt package org.kotlinlang.play // 1 fun main() { // 2 println("Hello, World!") // 3 } package org.kotlinlang.play //...