以下为配置文件，可按需修改

import proguard.gradle.ProGuardTask
buildscript {
    repositories { mavenCentral() }
    dependencies {
        classpath("com.guardsquare:proguard-gradle:7.6.1")
    }
}

tasks.register('proguard', ProGuardTask) {
    delete("${buildDir}/proguard")
    mkdir "${buildDir}/proguard"
    delete("$buildDir/classes-pro")
    configuration file("proguard-rules.pro")
    // 混淆时依赖的库
    //libraryjars configurations.runtimeClasspath.collect()
    //injars(tasks.named('jar').flatMap { it.archiveFile })
    def javaHome = System.getProperty('java.home')
    libraryjars "${javaHome}/jmods/java.base.jmod", jarfilter: '!**.jar', filter: '!module-info.class'
    verbose()
    //outjars layout.buildDirectory.file("libs/${project.name}.jar")
    // 混淆输出
    injars sourceSets.main.output

    outjars "$buildDir/classes-pro"
    dependsOn(bootJar)
}
task makeProJar(type: Jar) {
    dependsOn proguard
    // 指定生成的jar名
    archiveBaseName = 'appshare'
    // 从混淆后的目录打包class文件
    from("$buildDir/classes-pro")
    // 指定依赖包的路径
    manifest {
        attributes "Manifest-Version": 1.0,
                'Main-Class': 'info.muge.appshare.AppshareApplicationKt',
                'Class-Path': configurations.compileClasspath.files.collect { "lib/$it.name" }.join(' ')
    }
}