使用Gradle进行项目构建管理

安装配置Gradle

Gradle的安装与配置

创建项目

使用gradle init命令创建root项目

E:\code\myself\china-unicorn>gradle init
Starting a Gradle Daemon, 1 busy Daemon could not be reused, use --status for detailsSelect type of project to generate:1: basic2: application3: library4: Gradle plugin
Enter selection (default: basic) [1..4] 1Select build script DSL:1: Groovy2: Kotlin
Enter selection (default: Groovy) [1..2] 1Generate build using new APIs and behavior (some features may change in the next minor release)? (default: no) [yes, no]Project name (default: china-unicorn):> Task :init
Get more help with your project: Learn more about Gradle by exploring our samples at https://docs.gradle.org/7.5.1/samplesBUILD SUCCESSFUL in 4m
2 actionable tasks: 2 executed
E:\code\myself\china-unicorn>

修改gradle-wrapper.properties,配置本地distributionUrl。
```
distributionUrl=file:///E:/gradle/gradle-8.0.2-all.zip
```

在根目录下增加root级别的build.gradle文件

// 这是根目录build.gradle
// 应用于所有的project
allprojects {apply plugin: 'java'apply plugin: 'maven-publish'sourceCompatibility = '1.8'group 'org.donny.bigdata'version '1.0.0-SNAPSHOT'/* java编译的时候缺省状态下会因为中文字符而失败 */[compileJava, compileTestJava, javadoc]*.options*.encoding = 'UTF-8'buildscript {repositories {maven {url 'https://maven.aliyun.com/repository/public'}}}
}// 所有子项目的通用配置
subprojects {//版本定义ext {log4jVersion = '2.20.0'sparkVersion = '2.3.3'scalaMajorMinorVersion = '2.11'// 打包时使用的预发布路径preDestinationDirectory = "$rootProject.buildDir\\preDist\\$rootProject.name-$rootProject.version"}// 添加通用依赖dependencies {testImplementation group: 'junit', name: 'junit', version: '4.12'testImplementation 'org.junit.jupiter:junit-jupiter-api:5.7.0'testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.7.0'}// 仓库配置repositories {mavenLocal()def REPOSITORY_URL = 'http://maven.aliyun.com/nexus/content/groups/public'all {ArtifactRepository repo ->if (repo instanceof MavenArtifactRepository) {def url = repo.url.toString()if (url.startsWith('https://artifacts.elastic.co/maven')|| url.startsWith('https://repo1.maven.org/maven2')|| url.startsWith('https://repo.maven.org/maven2')|| url.startsWith('https://jcenter.bintray.com/')|| url.startsWith('https://repo.maven.apache.org/maven2')) {project.logger.lifecycle "Repository ${repo.url} replaced by $REPOSITORY_URL."remove repo}}}maven {url REPOSITORY_URL}}
}

用idea，打开项目

图形化创建子模块server和子模块spark-on-yarn-monitor。

子模块可以使用父模块定义的变量，在ext中定义版本和一些子模块需要使用的变量

// 这是根目录build.gradle
// 应用于所有的project
allprojects {apply plugin: 'java'apply plugin: 'maven-publish'sourceCompatibility = '1.8'group 'org.donny.bigdata'version '1.0.0-SNAPSHOT'/* java编译的时候缺省状态下会因为中文字符而失败 */[compileJava, compileTestJava, javadoc]*.options*.encoding = 'UTF-8'buildscript {repositories {maven {url 'https://maven.aliyun.com/repository/public'}}}
}// 所有子项目的通用配置
subprojects {//版本定义ext {log4jVersion = '2.20.0'sparkVersion = '2.3.3'scalaMajorMinorVersion = '2.11'// 打包时使用的预发布路径preDestinationDirectory = "$rootProject.buildDir\\preDist\\$rootProject.name-$rootProject.version"}// 添加通用依赖dependencies {testImplementation group: 'junit', name: 'junit', version: '4.12'testImplementation 'org.junit.jupiter:junit-jupiter-api:5.7.0'testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.7.0'}// 仓库配置repositories {mavenLocal()def REPOSITORY_URL = 'http://maven.aliyun.com/nexus/content/groups/public'all {ArtifactRepository repo ->if (repo instanceof MavenArtifactRepository) {def url = repo.url.toString()if (url.startsWith('https://artifacts.elastic.co/maven')|| url.startsWith('https://repo1.maven.org/maven2')|| url.startsWith('https://repo.maven.org/maven2')|| url.startsWith('https://jcenter.bintray.com/')|| url.startsWith('https://repo.maven.apache.org/maven2')) {project.logger.lifecycle "Repository ${repo.url} replaced by $REPOSITORY_URL."remove repo}}}maven {url REPOSITORY_URL}}
}

server子模块配置如下，可以看到子模块可以使用父模块定义的变量

import org.gradle.util.GradleVersionarchivesBaseName = "Chineseunicorn"ext.mailVersion = '2.0.1'
ext.nettyVersion = '4.1.90.Final'dependencies {// 日志依赖implementation group: 'org.apache.logging.log4j', name: 'log4j-api', version: "${log4jVersion}"implementation group: 'org.apache.logging.log4j', name: 'log4j-core', version: "${log4jVersion}"// jakarta邮件依赖implementation "com.sun.mail:jakarta.mail:${mailVersion}"implementation group: 'jakarta.mail', name: 'jakarta.mail-api', version: "${mailVersion}"// nettyimplementation group: 'io.netty', name: 'netty-all', version: "${nettyVersion}"
}test {useJUnitPlatform()
}

改写父子模块的jar任务

root模块，依赖子模块的jar关系

jar {dependsOn clean// 依赖子模块spark-on-yarn-monitor的jar任务dependsOn ':spark-on-yarn-monitor:jar'// 依赖子模块server的jar任务dependsOn ':server:jar'
}

server子模块

将运行时依赖的jar打入一个单独的lib文件夹
依赖其他子模块的任务 dependsOn ':spark-on-yarn-monitor:jar'
manifest文件编写

// 重写jar
jar {dependsOn ':spark-on-yarn-monitor:jar'dependsOn 'clearPreDist'dependsOn 'copyBin'dependsOn 'copyJar'dependsOn 'copyConf'from sourceSets.main.outputdependsOn configurations.runtimeClasspathString someString = ''configurations.runtimeClasspath.each { someString = someString + " lib//" + it.name }manifest {attributes 'Implementation-Title': archivesBaseNameattributes 'Implementation-Vendor-Id': 'com.donny'attributes 'Implementation-Version': archiveVersionattributes 'Main-Class': 'com.donny.bigdata.surveillance.ChineseUnicorn'attributes 'Created-By': 'Gradle ' + GradleVersion.current()attributes 'Build-Jdk': JavaVersion.current()attributes 'Class-Path': someString}// 控制jar的输出位置destinationDirectory = file("${preDestinationDirectory}")// 开启zip64压缩输出zip64 true
}
// 打包
task clearPreDist(type: Delete) {delete "${preDestinationDirectory}"
}
// 将依赖包复制到lib目录
task copyJar(type: Copy) {into "${preDestinationDirectory}" + "\\lib"from configurations.runtimeClasspath
}
// 将配置文件复制到conf目录
task copyConf(type: Copy) {into "${preDestinationDirectory}" + "\\conf"from "$rootProject.rootDir" + "\\conf"
}
// 将脚本复制到bin目录
task copyBin(type: Copy) {into "${preDestinationDirectory}" + "\\bin"from "$rootProject.rootDir" + "\\bin"
}

spark-on-yarn-monitor子模块

// 改写
jar {// 将所有implementation依赖一起打包到jar，需要对冲突定义规则，我这里采用DuplicatesStrategy.EXCLUDE策略configurations.implementation.canBeResolved = trueduplicatesStrategy = DuplicatesStrategy.EXCLUDEfrom { configurations.implementation.collect { it.isDirectory() ? it : zipTree(it) } }manifest {attributes 'Main-Class': 'com.donny.bigdata.surveillance.spark.SparkOnYarnMonitor'}// 开启zip64压缩输出zip64 true// 控制jar的输出位置-父工程的plugins文件夹中destinationDirectory = file("${preDestinationDirectory}" + "\\plugins")
}

打包成zip或者tar

root模块的配置增加任务，最终发布包在文件夹distributions下。

task Zip(type: Zip) {dependsOn jar//要压缩的文件夹from("$buildDir\\preDist\\")
}task buildTar(type: Tar) {dependsOn jarcompression = Compression.GZIParchiveExtension = "tar.gz"//要压缩的文件夹from("$buildDir\\preDist\\")
}

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