Groovy典型使用场景:
Gradle,自动化构建工具,通过简单编写Groovy脚本,便可进行依赖管理并完成项目构建;
Grails,Web开发框架,无需自行编写脚手架代码,可用来快速开发;
Groovy优势:
1、Groovy是Java平台上脚本语言,抽象程度更高;可以更简单快速地开发,可以编写更少的代码。
2、与Java语言无缝集成,可称为“超级Java”
使用“类Java”语法,Java成语员可以快速过渡。
Groovy与Java二进制兼容,都生成字节码,所以可以与使用Java语言所编写的框架和组件完美继承,并且效率安全方面比其他脚本语言要高。
Groovy对象就是Java对象,使用与JDK相同的API。
可以保护整个Java产业在Java上的巨大投资。
3、在中小型项目中可以替代Java,在大型Java项目中可以嵌入Groovy应用。
Groovy的Hello World
println "Hello World"
Gradle的应用示例
buildscript {
ext {
grailsVersion = project.grailsVersion
}
repositories {
mavenLocal()
maven { url "https://repo.grails.org/grails/core" }
}
dependencies {
classpath "org.grails:grails-gradle-plugin:$grailsVersion"
classpath 'com.bertramlabs.plugins:asset-pipeline-gradle:2.5.0'
classpath "org.grails.plugins:hibernate:4.3.10.5"
}
}
plugins {
id "io.spring.dependency-management" version "0.5.2.RELEASE"
}
version "0.1"
group "grailjob"
apply plugin: "spring-boot"
apply plugin: "war"
apply plugin: "asset-pipeline"
apply plugin: 'eclipse'
apply plugin: 'idea'
apply plugin: "org.grails.grails-web"
apply plugin: "org.grails.grails-gsp"
ext {
grailsVersion = project.grailsVersion
gradleWrapperVersion = project.gradleWrapperVersion
}
assets {
minifyJs = true
minifyCss = true
}
repositories {
mavenLocal()
maven { url "https://repo.grails.org/grails/core" }
}
dependencyManagement {
imports {
mavenBom "org.grails:grails-bom:$grailsVersion"
}
applyMavenExclusions false
}
dependencies {
compile "org.springframework.boot:spring-boot-starter-logging"
compile "org.springframework.boot:spring-boot-starter-actuator"
compile "org.springframework.boot:spring-boot-autoconfigure"
compile "org.springframework.boot:spring-boot-starter-tomcat"
compile "org.grails:grails-dependencies"
compile "org.grails:grails-web-boot"
compile "org.grails.plugins:hibernate"
compile "org.grails.plugins:cache"
compile "org.hibernate:hibernate-ehcache"
compile "org.grails.plugins:scaffolding"
runtime "org.grails.plugins:asset-pipeline"
testCompile "org.grails:grails-plugin-testing"
testCompile "org.grails.plugins:geb"
// Note: It is recommended to update to a more robust driver (Chrome, Firefox etc.)
testRuntime 'org.seleniumhq.selenium:selenium-htmlunit-driver:2.44.0'
compile "com.dangdang:elastic-job-core:1.0.2"
compile "com.dangdang:elastic-job-spring:1.0.2"
console "org.grails:grails-console"
}
task wrapper(type: Wrapper) {
gradleVersion = gradleWrapperVersion
}