[해결 방법] No matching variant of org.springframework.boot:spring-boot-gradle-plugin:3.1.0 was found

🟦 기본 환경: IDE: IntelliJ, Language: Java

 

 

발생 Error

SpringBoot에서 SpringBoot 3.x대 project import 시, 🚨 다음과 같은 Error 발생

A problem occurred configuring root project 'NewProject'.
> Could not resolve all files for configuration ':classpath'.
   > Could not resolve org.springframework.boot:spring-boot-gradle-plugin:3.1.0.
     Required by:
         project : > org.springframework.boot:org.springframework.boot.gradle.plugin:3.1.0
      > No matching variant of org.springframework.boot:spring-boot-gradle-plugin:3.1.0 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 '7.6.1' but:
          - Variant 'apiElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.1.0 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

 

 

발생 원인

SpringBoot 3.0 부터는 Java 17부터 지원

 

 

해결 방법

1. SpringBoot를 2.x대로 다운그레이드

2. Java17 설치

  2.1. File / Settings / Build, Execution, Deployment / Build Tools / Gradle 

  : Gradle JVM: Java17 이상으로 설정

  2.2. File / Project Structure / Project

  : SDK - Java 17 이상으로 설정

  : Language level - SDK default로 설정

  2.3. File / Project Structure / Modules

  : Language level - project default로 설정

  2.4. Gradle Refresh

 

 

 

참고 자료

Spring Boot 3.x 실행이 안될 경우 (feat. IntelliJ)