[서버][스프링][Kotlin][mapstruct] package com.dreamaz.gongga.room.model.RoomDto does not exist

문제 현상

mvn compile을 통해 kotlin 프로젝트를 빌드하면

빌드 중에 mapstruct 관련 annotation proccessor에서 일반 클래스들을 못찾는 아래의 에러가 발생했습니다.

 

 

 

원인

target/classes 폴더를 보면 아직 *.class 파일이 생성되지 않아 생긴 문제로 보입니다.

 

 

 

 

해결 방법

maven-compiler-plugin에 아래의 코드를 추가하면 됩니다.

 

*변경 전 컴파일 단계

maven-resources-plugin:3.0.1:copy-resources (copy-resources)

kotlin-maven-plugin:1.4.31:kapt (kapt)

maven-resources-plugin:3.0.1:resources (default-resources)

maven-compiler-plugin:3.8.1:compile (default-compile)

 

 

*변경 후 컴파일 단계

maven-resources-plugin:3.0.1:copy-resources (copy-resources)

kotlin-maven-plugin:1.4.31:kapt (kapt)

maven-resources-plugin:3.0.1:resources (default-resources)

maven-compiler-plugin:3.8.1:compile (java-compile)

 

 

*전체 코드(복붙용)

<plugin>
	<groupId>org.apache.maven.plugins</groupId>
	<artifactId>maven-compiler-plugin</artifactId>
	<version>3.8.1</version>
	<configuration>
		<proc>none</proc>
		<source>${kotlin.compiler.jvmTarget}</source>
		<target>${kotlin.compiler.jvmTarget}</target>
		<source>1.8</source> <!-- depending on your project -->
		<target>1.8</target> <!-- depending on your project -->
	</configuration>
	<executions>
		<!-- Replacing default-compile as it is treated specially by maven -->
		<execution>
			<id>default-compile</id>
			<phase>none</phase>
		</execution>
		<!-- Replacing default-testCompile as it is treated specially by maven -->
		<execution>
			<id>default-testCompile</id>
			<phase>none</phase>
		</execution>
		<execution>
			<id>java-compile</id>
			<phase>compile</phase>
			<goals>
				<goal>compile</goal>
			</goals>
		</execution>
		<execution>
			<id>java-test-compile</id>
			<phase>test-compile</phase>
			<goals> <goal>testCompile</goal> </goals>
		</execution>
	</executions>
</plugin>

 

 

참고

kotlinlang.org/docs/maven.html#compile-kotlin-and-java-sources

Maven | Kotlin

www.baeldung.com/kotlin/maven-java-project

Create a Java and Kotlin Project with Maven | Baeldung on Kotlin