Gradle "Could not resolve all artifacts for configuration ':classpath'." error on Intellij

Question

I'm just trying out spring boot, and tried to import a spring boot project onto Intellij and simply run it. The build just keeps failing every time despite trying a bunch of different solutions. This is the error I'm getting:

./gradlew build --warning-mode=all

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'adhdplanner'.
> Could not resolve all artifacts for configuration ':classpath'.
   > Could not resolve org.springframework.boot:spring-boot-gradle-plugin:3.2.5.
     Required by:
         project : > org.springframework.boot:org.springframework.boot.gradle.plugin:3.2.5
      > No matching variant of org.springframework.boot:spring-boot-gradle-plugin:3.2.5 was found. The consumer was configured to find a library for use during runtime, compatible with Java 8, packaged as a jar, and its dependencies declared externally, as well as attribute 'org.gradle.plugin.api-version' with value '8.7' but:
          - Variant 'apiElements' declares a library, packaged as a jar, and its dependencies declared externally:
              - Incompatible because this component declares a component for use during compile-time, compatible with Java 17 and the consumer needed a component for use during runtime, compatible with Java 8
              - Other compatible attribute:
                  - Doesn't say anything about org.gradle.plugin.api-version (required '8.7')
          - Variant 'javadocElements' declares a component for use during runtime, 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 elements (required them packaged as a jar)
                  - Doesn't say anything about its target Java version (required compatibility with Java 8)
                  - Doesn't say anything about org.gradle.plugin.api-version (required '8.7')
          - Variant 'mavenOptionalApiElements' declares a library, packaged as a jar, and its dependencies declared externally:
              - Incompatible because this component declares a component for use during compile-time, compatible with Java 17 and the consumer needed a component for use during runtime, compatible with Java 8
              - Other compatible attribute:
                  - Doesn't say anything about org.gradle.plugin.api-version (required '8.7')
          - Variant 'mavenOptionalRuntimeElements' declares a library for use during runtime, 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 8
              - Other compatible attribute:
                  - Doesn't say anything about org.gradle.plugin.api-version (required '8.7')
          - Variant 'runtimeElements' declares a library for use during runtime, 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 8
              - Other compatible attribute:
                  - Doesn't say anything about org.gradle.plugin.api-version (required '8.7')
          - Variant 'sourcesElements' declares a component for use during runtime, 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 elements (required them packaged as a jar)
                  - Doesn't say anything about its target Java version (required compatibility with Java 8)
                  - Doesn't say anything about org.gradle.plugin.api-version (required '8.7')

* Try:
> Review the variant matching algorithm at https://docs.gradle.org/8.7/userguide/variant_attributes.html#sec:abm_algorithm.
> No matching variant errors are explained in more detail at https://docs.gradle.org/8.7/userguide/variant_model.html#sub:variant-no-match.
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.

This is my build.gradle. The sourceCompatibility is grey, I added the "buildscript" section, changed the versions, etc:

buildscript{
    ext{
        springBootVersion = '3.2.5.RELEASE'
    }
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}

plugins {
    id 'java'
    id 'idea'
    id 'org.springframework.boot' version '3.2.5'
    id 'io.spring.dependency-management' version '1.1.4'
}

group = 'org.example'
version = '1.0-SNAPSHOT'
sourceCompatibility = '1.6'

compileJava.options.fork = true
compileJava.options.forkOptions.executable = true

repositories {
    mavenCentral()
}

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-web'
    testImplementation('org.springframework.boot:spring-boot-starter-test')
}

test {
    useJUnitPlatform()
}

This is gradle-wrapper.properties:

#Tue Apr 23 12:49:14 EDT 2024
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

This is my Main():

package org.example;

public class Main {
    public static void main(String[] args) {
        System.out.println("Hello world!");
    }
}

I tried versions ll, 21, and 22, but I still get the same errors: Project Structure Settings

I'm not sure if I gave enough information, please let me know.

Answer 1

I had the same issue and resolved it. Here are the resolution steps:

1. Update the Java version to openjdk-19.0.1
2. Open IntelliJ Settings -> Build, Execution, Environment -> Build Tools -> Gradle -> Update Gradle JVM
3. Open IntelliJ File Menu -> Project Structure ->
   a. Project Project Settings -> Project -> SDK : Update the latest path
   b. Platform Settings -> SDKs: Keep the latest JDK and remove the older JDKs
4. Then Clean and Re-Build the project Or, Restart the IDE

Please recheck it once, you might have missed the step 3.b.