使用 Kotlin , Groovy ，Java 开发一个自己的 Gradle 插件

先上效果图：

image.png

功能说明：

korGenerate:

自动生成 Entity，Dao，Controller 模板代码

korFront:

自动 copy 前端 front 工程目录下面的 —— nowa 构建的 dist 目录下的静态资源文件：html, css, js

image.png

build.gradle

group 'com.easykotlin.plugin'
version '1.0-SNAPSHOT'buildscript {ext.kotlin_version = '1.2.0'repositories {mavenCentral()}dependencies {classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"}
}apply plugin: 'groovy'
apply plugin: 'java'
apply plugin: 'kotlin'
apply plugin: 'maven'sourceCompatibility = 1.8repositories {mavenCentral()
}dependencies {compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"compile 'org.codehaus.groovy:groovy-all:2.3.11'testCompile group: 'junit', name: 'junit', version: '4.12'compile gradleApi()
}compileKotlin {kotlinOptions.jvmTarget = "1.8"
}
compileTestKotlin {kotlinOptions.jvmTarget = "1.8"
}

image.png

其中，compile gradleApi() 是使用 Gradle 的 API 依赖。

配置上传到 maven 仓库，这里我们配置上传至本机的目录下：

apply plugin: 'maven'uploadArchives {repositories {mavenDeployer {repository(url: uri('/Users/jack/.m2/repository'))}}
}

点击右侧工具栏的： upload > uploadArchives

image.png

执行日志：

23:41:48: Executing external task 'uploadArchives'...
:compileKotlin UP-TO-DATE
:compileJava NO-SOURCE
:processResources UP-TO-DATE
:classes UP-TO-DATE
:jar UP-TO-DATE
:uploadArchivesBUILD SUCCESSFUL in 0s
4 actionable tasks: 1 executed, 3 up-to-date
23:41:49: External task execution finished 'uploadArchives'.

看一下本机的上传情况：

~/.m2/repository/com/easykotlin/plugin/kor$ tree
.
├── 1.0-SNAPSHOT
│   ├── kor-1.0-20171221.172201-1.jar
│   ├── kor-1.0-20171221.172201-1.jar.md5
│   ├── kor-1.0-20171221.172201-1.jar.sha1
│   ├── kor-1.0-20171221.172201-1.pom
│   ├── kor-1.0-20171221.172201-1.pom.md5
│   ├── kor-1.0-20171221.172201-1.pom.sha1
│   ├── kor-1.0-20171221.172210-2.jar
│   ├── kor-1.0-20171221.172210-2.jar.md5
│   ├── kor-1.0-20171221.172210-2.jar.sha1
│   ├── kor-1.0-20171221.172210-2.pom
│   ├── kor-1.0-20171221.172210-2.pom.md5
│   ├── kor-1.0-20171221.172210-2.pom.sha1
│   ├── maven-metadata-remote.xml
│   ├── maven-metadata-remote.xml.sha1
│   ├── maven-metadata.xml
│   ├── maven-metadata.xml.md5
│   ├── maven-metadata.xml.sha1
│   └── resolver-status.properties
├── maven-metadata-remote.xml
├── maven-metadata-remote.xml.sha1
├── maven-metadata.xml
├── maven-metadata.xml.md5
├── maven-metadata.xml.sha1
└── resolver-status.properties1 directory, 24 files

其中，kor-1.0-20171221.154128-1.pom 文件的内容是：

<?xml version="1.0" encoding="UTF-8"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><modelVersion>4.0.0</modelVersion><groupId>com.easykotlin.plugin</groupId><artifactId>kor</artifactId><version>1.0-SNAPSHOT</version><dependencies><dependency><groupId>org.jetbrains.kotlin</groupId><artifactId>kotlin-stdlib-jdk8</artifactId><version>1.2.0</version><scope>compile</scope></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version><scope>test</scope></dependency></dependencies>
</project>

新建Gradle 插件的执行逻辑的实现类

image.png

实现代码编写：

image.png

package com.easykotlin.korimport org.gradle.api.Plugin
import org.gradle.api.Projectclass KorPlugin implements Plugin<Project>{@Overridevoid apply(Project project) {}
}

具体实现代码：

package com.easykotlin.korimport org.gradle.api.Plugin
import org.gradle.api.Projectclass KorPlugin implements Plugin<Project> {@Overridevoid apply(Project project) {project.task("kor") << {println("Hello, Kor !")println(project.group.toString())println(project.artifacts.toString())}project.task("nowabuild") << {NowaBuildJava nb = new NowaBuildJava()String projectDir = project.projectDir.absolutePathprintln("projectDir = $projectDir")nb.nowaBuild(projectDir)}}
}

kor.properties

implementation-class=com.easykotlin.kor.KorPlugin

image.png

build.gradle

group 'com.easykotlin.plugin'
version '1.0-SNAPSHOT'buildscript {ext.kotlin_version = '1.2.0'repositories {mavenCentral()}dependencies {classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"}
}apply plugin: 'groovy'
apply plugin: 'java'
apply plugin: 'kotlin'
apply plugin: 'maven'sourceCompatibility = 1.8repositories {mavenCentral()
}dependencies {compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
//    compile 'org.codehaus.groovy:groovy-all:2.4.11'testCompile group: 'junit', name: 'junit', version: '4.12'compile gradleApi()
}compileKotlin {kotlinOptions.jvmTarget = "1.8"
}
compileTestKotlin {kotlinOptions.jvmTarget = "1.8"
}uploadArchives {repositories {mavenDeployer {repository(url: uri('/Users/jack/.m2/repository'))}}
}

image.png

然后，我们在另外项目 reakt 中使用刚才开发的插件：

build.gradle

buildscript {ext {kotlinVersion = '1.2.0'springBootVersion = '2.0.0.M7'}repositories {mavenLocal()mavenCentral()maven { url "https://repo.spring.io/snapshot" }maven { url "https://repo.spring.io/milestone" }}dependencies {classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:${kotlinVersion}")classpath("org.jetbrains.kotlin:kotlin-allopen:${kotlinVersion}")classpath('com.easykotlin.plugin:kor:1.0-SNAPSHOT')}
}apply plugin: 'com.easykotlin.kor'......

image.png

Gradle 插件工程源代码：

https://github.com/EasySpringBoot/kor

使用插件的工程源代码：

https://github.com/EasyKotlin/reakt