gradle多模块项目打包依赖拆分

一、目录结构

.
├── boogle-common
│   ├── build.gradle.kts
│   └── src
├── boogle-core
│   ├── build.gradle.kts
│   └── src
├── boogle-generator
│   ├── build.gradle.kts
│   └── src
├── boogle-logging
│   ├── build.gradle.kts
│   └── src
├── boogle-quartz
│   ├── build.gradle.kts
│   └── src
├── boogle-system
│   ├── build.gradle.kts
│   └── src
├── boogle-web-starter
│   ├── build.gradle.kts
│   └── src
├── buildSrc
│   ├── build
│   ├── build.gradle.kts
│   └── src
│       └── main
│           └── kotlin
│               └── org.wm.java-conventions.gradle.kts
├── gradle
│   └── wrapper
│       ├── gradle-wrapper.jar
│       └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
├── settings.gradle.kts

二、buildSrc/src/main/kotlin/org.wm.java-conventions.gradle.kts配置

/*
 * This file was generated by the Gradle 'init' task.
 */

plugins {
    `java-library`
    `maven-publish`
    id("org.springframework.boot")
}

apply(plugin = "io.spring.dependency-management")

tasks.named<org.springframework.boot.gradle.tasks.bundling.BootJar>("bootJar") {
    mainClass.set("com.xqx.ApplicationRun")
}

repositories {
    mavenLocal()
    flatDir {
        dirs("lib")
    }
    maven {
        url = uri("https://maven.aliyun.com/repository/public/")
    }
    maven {
        url = uri("https://oss.sonatype.org/content/repositories/snapshots/")
    }

    maven {
        url = uri("https://repo.jenkins-ci.org/releases")
    }

    maven {
        url = uri("https://repo.maven.apache.org/maven2/")
    }
}

dependencies {
    ...
}

group = "com.xqx"
version = "2022.05.09"
java.sourceCompatibility = JavaVersion.VERSION_17

publishing {
    publications.create<MavenPublication>("maven") {
        from(components["java"])
    }
}

tasks.withType<JavaCompile>() {
    options.encoding = "UTF-8"
}

三、boogle-web-starter/build.gradle.kts配置（入口模块）

plugins {
    id("com.xqx.java-conventions")
}

tasks.register<Copy>("copyJar")

// 复制jar依赖包
tasks.named<Copy>("copyJar") {
    delete("$buildDir/libs/lib")
    from(configurations.runtimeClasspath).into("$buildDir/libs/lib")
}

// 打包时排除其他依赖jar
tasks.named<org.springframework.boot.gradle.tasks.bundling.BootJar>("bootJar") {
    setExcludes(listOf("*.jar"))
    dependsOn("copyJar")
    manifest {
    // 指定Class-Path，运行时不用在命令行指定loader.path
        attributes(
            "Class-Path" to configurations.runtimeClasspath.get().files.map { "lib/${it.name}" }.joinToString(" ")
        )
    }
}

dependencies {
    implementation(project(":quartz"))
    implementation(project(":generator"))
    implementation(project(":workflow"))
    implementation(project(":system"))
    implementation(project(":archives"))
    implementation(project(":tools"))
}
description = "entrance-web"

四、build

使用bootJar打包，将会在build/lib下存放外部依赖包，

五、存在问题

使用这种方式打包后启动Jar包里依赖的其他模块的依赖jar包是*-plain.jar，并不包含该模块自己的依赖类，部署的时候如果只是更改了模块代码，直接替换module-plain.jar即可，如果添加或删除了外部依赖，则需要将外部依赖的jar手动复制。