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  • Groovy安装与入门实例

    1 Groovy是什么?


    来看下官网的介绍:http://groovy.codehaus.org

    ===============================================================================

    Groovy...

    ·        is an agile and dynamic language for the Java Virtual Machine

    ·        builds upon the strengths of Javabut has additionalpower features inspiredby languages like Python, Ruby and Smalltalk

    ·        makes modern programming features available to Java developers with almost-zero learning curve

    ·        provides the ability to statically type check and staticallycompile your codefor robustness and performance

    ·        supports Domain-Specific Languages and other compact syntax so your codebecomes easyto read and maintain

    ·        makes writing shell and buildscripts easy with its powerfulprocessing primitives, OO abilities and an Ant DSL

    ·        increases developer productivity by reducing scaffolding code when developing web, GUI, database orconsole applications

    ·        simplifies testing bysupporting unit testing and mocking out-of-the-box

    ·        seamlessly integrates with all existingJava classes and libraries

    ·        compiles straight to Java bytecodeso you can use it anywhere you can use Java

    ===============================================================================

    通过支持DSL提高代码可读性和可维护性

    减少开始Web、GUI、数据库、控制台应用程序时的脚手架代码

    简化单元测试和Mock技术

    与Java类包无缝集成

    2 Groovy环境安装


    下面是官方文档中摘取的安装步骤。适用于Linux系统或Cygwin模拟环境。如果是Windows平台的话,也可以直接下载Windows installer一键安装。

    ===============================================================================

    GVM (the GroovyenVironment Manager)

    This tool makesinstalling Groovy on any Bash platform (Mac OSX, Linux, Cygwin, Solaris orFreeBSD) very easy.

    Simply open a newterminal and enter:

    $ curl -s get.gvmtool.net | bash

    Follow theinstructions on-screen to complete installation.

    Open a newterminal or type the command:

    $ source "$HOME/.gvm/bin/gvm-init.sh"

    Then install thelatest stable Groovy:

    $ gvm install groovy

    After installationis complete and you've made it your default version, test it with:

    $ groovy -version

    That's all thereis to it!

    ===============================================================================

    下面来亲自体验一下,然后编写个Groovy版的Hello World测试一下。

    $ curl –s get.gvmtool.net | bash


     

    之后执行初始化脚本,也可以将这句命令加入到~/.bashrc中。

    $ source "/cygdrive/c/Users/daichen/.gvm/bin/gvm-init.sh"

    编写一个Hello World试一下吧。

    helloworld.groovy

    ===============================================================================

    class Test {

    def text = “helloworld!!!”

    }

    print new Test().getText()

    ===============================================================================

             $ groovy helloworld.groovy

             hello world!!!

    3 Groovy-Eclipse插件安装


    在Help -> Install New Software下输入http://dist.springsource.org/release/GRECLIPSE/e3.6

    选择Groovy-Eclipse (Required) 进行安装。

    可以新建Groovy项目,或者在已有项目中新加Groovy Class,就会自动开启此项目上的Groovy Nature属性。这样普通Java代码就与Groovy代码融合在一起了。

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  • 原文地址:https://www.cnblogs.com/xiaomaohai/p/6157773.html
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