使用Spring Boot Gradle Plugin 3.0.0出现无匹配变体错误

问题场景 #

在IntelliJ中使用Spring Boot Gradle Plugin 3.0.0时出现依赖解析失败，切换至2.7.6版本后错误消失。项目的build.gradle.kts配置如下：

import org.jetbrains.kotlin.gradle.tasks.KotlinCompile

plugins {
    id("org.springframework.boot") version "3.0.0"
    id("io.spring.dependency-management") version "1.1.0"
    kotlin("jvm") version "1.7.20"
    kotlin("plugin.spring") version "1.7.20"
    id("org.jlleitschuh.gradle.ktlint") version "11.0.0"
}

java.sourceCompatibility = JavaVersion.VERSION_17

repositories {
    mavenCentral()
}

dependencies {
    implementation("org.springframework.boot:spring-boot-starter-data-r2dbc")
    implementation("org.springframework.boot:spring-boot-starter-webflux")
    implementation("com.fasterxml.jackson.module:jackson-module-kotlin")
    implementation("io.projectreactor.kotlin:reactor-kotlin-extensions")
    implementation("org.jetbrains.kotlin:kotlin-reflect")
    implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-reactor")
    runtimeOnly("org.postgresql:postgresql")
    runtimeOnly("org.postgresql:r2dbc-postgresql")
    testImplementation("org.springframework.boot:spring-boot-starter-test")
    testImplementation("io.projectreactor:reactor-test")
    jdbc("org.postgresql:postgresql:42.5.0")
}

tasks.withType<KotlinCompile> {
    kotlinOptions {
        freeCompilerArgs = listOf("-Xjsr305=strict")
        jvmTarget = "17"
    }
}

tasks.withType<Test> {
    useJUnitPlatform()
}

错误信息 #

> Could not resolve org.springframework.boot:spring-boot-gradle-plugin:3.0.0.
     Required by:
         project : > org.springframework.boot:org.springframework.boot.gradle.plugin:3.0.0
      > No matching variant of org.springframework.boot:spring-boot-gradle-plugin:3.0.0 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 '7.5.1' but:
          - Variant 'apiElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.0.0 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
              - Other compatible attribute:
                  - Doesn't say anything about org.gradle.plugin.api-version (required '7.5.1')

核心原因 #

Spring Boot Gradle Plugin 3.0.0要求构建环境必须使用Java 17，虽然项目配置中java.sourceCompatibility设为17，但Gradle实际运行时使用的是Java 11，导致插件版本与运行环境不兼容。

解决方案 #

1. 检查Gradle运行时的Java版本 #

执行以下命令确认当前Gradle使用的JVM版本：

./gradlew --version

查看输出中的JVM:字段，确保版本为17或更高。

2. 配置IntelliJ使用Java 17作为Gradle JVM #

• 打开IntelliJ的Settings（Windows/Linux：File -> Settings；Mac：IntelliJ IDEA -> Settings）
• 导航到Build, Execution, Deployment -> Build Tools -> Gradle
• 在Gradle JVM下拉菜单中选择已安装的Java 17 SDK，点击Apply保存。

3. 确认项目SDK配置 #

• 打开Project Structure（快捷键：Ctrl+Alt+Shift+S）
• 进入Project Settings -> Project
• 设置Project SDK为Java 17，Project language level设为17 - Sealed classes, pattern matching，点击OK保存。

完成以上配置后，重新同步Gradle项目即可解决依赖解析错误。

内容的提问来源于stack exchange，提问作者die Wolken