[Spring] Springboot 3 with Java 11
in Tech on Trouble Shooting, Spring
Springboot 3버전 프로젝트를 Java 11로 구성할 때 발생한 오류에 대해 포스팅하려 한다.
👿 Problem
Springboot 3.0.2 버전으로 프로젝트를 구성하려는데, 아래와 같은 에러가 발생하면서 Gradle이 import되지 않는 현상이 발생했다.
No matching variant of org.springframework.boot:spring-boot-gradle-plugin:3.0.2 was found. The consumer was configured to find a runtime of a library compatible with Java 11, packaged as a jar, and its dependencies declared externally, as well as attribute 'org.gradle.plugin.api-version' with value '7.6' but:
- Variant 'apiElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.0.2 declares a library, packaged as a jar, and its dependencies declared externally:
- Incompatible because this component declares an API of a component compatible with Java 17 and the consumer needed a runtime of a component compatible with Java 11
- Other compatible attribute:
- Doesn't say anything about org.gradle.plugin.api-version (required '7.6')
- Variant 'javadocElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.0.2 declares a runtime of a component, and its dependencies declared externally:
- Incompatible because this component declares documentation and the consumer needed a library
- Other compatible attributes:
- Doesn't say anything about its target Java version (required compatibility with Java 11)
- Doesn't say anything about its elements (required them packaged as a jar)
- Doesn't say anything about org.gradle.plugin.api-version (required '7.6')
- Variant 'mavenOptionalApiElements' capability org.springframework.boot:spring-boot-gradle-plugin-maven-optional:3.0.2 declares a library, packaged as a jar, and its dependencies declared externally:
- Incompatible because this component declares an API of a component compatible with Java 17 and the consumer needed a runtime of a component compatible with Java 11
- Other compatible attribute:
- Doesn't say anything about org.gradle.plugin.api-version (required '7.6')
- Variant 'mavenOptionalRuntimeElements' capability org.springframework.boot:spring-boot-gradle-plugin-maven-optional:3.0.2 declares a runtime of a library, packaged as a jar, and its dependencies declared externally:
- Incompatible because this component declares a component compatible with Java 17 and the consumer needed a component compatible with Java 11
- Other compatible attribute:
- Doesn't say anything about org.gradle.plugin.api-version (required '7.6')
- Variant 'runtimeElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.0.2 declares a runtime of a library, packaged as a jar, and its dependencies declared externally:
- Incompatible because this component declares a component compatible with Java 17 and the consumer needed a component compatible with Java 11
- Other compatible attribute:
- Doesn't say anything about org.gradle.plugin.api-version (required '7.6')
- Variant 'sourcesElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.0.2 declares a runtime of a component, and its dependencies declared externally:
- Incompatible because this component declares documentation and the consumer needed a library
- Other compatible attributes:
- Doesn't say anything about its target Java version (required compatibility with Java 11)
- Doesn't say anything about its elements (required them packaged as a jar)
- Doesn't say anything about org.gradle.plugin.api-version (required '7.6')
위 error 메시지를 보면 Java 11과 호환에 대한 문제가 있는 것으로 보이기에 해결방법을 찾아보았다.
👼 Solution
Springboot 3.0 이상부터는 Java 17 이상이 필요하다고 한다. 더해서 Springboot 2.x 버전에서도 Java 17이 잘 동작한다고하니 IntelliJ 설정을 JDK11로 변경해보려 한다.
Project Structure 변경
SDK를 JDK 17로 변경해준다. (나는 Oracle 페이지에서 직접 JDK를 다운받아 변경하였다.)
다른 블로그에서 Gradle JVM 변경에 대한 내용도 있었지만, Project Structure를 변경하니 같이 변경되어 추가로 진행하지는 않았다.
모든 설정을 마치고 Gradle을 Refresh 해주면 정상적으로 동작하는 것을 확인할 수 있다.
Spring Initializr 설정에도 최신인 3.x 버전을 권장하는 것으로 보이니 이제는 Java 17을 사용하도록 해야겠다.
