先不管了，在Mac下安装试试。
【1】Mac上需要先安装JDK，安装后自动会添加JAVA_HOME
【2】参照上图，安装gvm
【3】基于gvm，安装grails
ibeartekiMacBook-Pro:testgrails ibear$ gvm install grails
==== BROADCAST =================================================================
* 16/07/15: Groovy 2.4.4 has been released on GVM. #groovylang
* 10/07/15: Springboot 1.3.0.M2 has been released on GVM. #springboot
* 09/07/15: Grails 3.0.3 has been released on GVM. #grailsfw
================================================================================
Downloading: grails 3.0.3
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
0 0 0 392 0 0 113 0 --:--:-- 0:00:03 --:--:-- 264
0 149M 0 646k 0 0 29193 0 1:29:12 0:00:22 1:28:50 59434
装到一半，下载不动了，连国外的网总是不稳定。
也可以手工下载grails-3.0.3.zip，然后放到/User/myuser/.gvm/archives下面
然后再执行安装，它就会以为已经下载好了。
0curl: (7) Failed to connect to s3.amazonaws.com port 443: Operation timed out
unzip: cannot find zipfile directory in one of /Users/ibear/.gvm/archives/grails-3.0.3.zip or
/Users/ibear/.gvm/archives/grails-3.0.3.zip.zip, and cannot find /Users/ibear/.gvm/archives/grails-3.0.3.zip.ZIP, period.
Stop! The archive was corrupt and has been removed! Please try installing again.
ibeartekiMacBook-Pro:~ ibear$ gvm install grails
Found a previously downloaded grails 3.0.3 archive. Not downloading it again...
Installing: grails 3.0.3
Done installing!
Do you want grails 3.0.3 to be set as default? (Y/n): Y
Setting grails 3.0.3 as default.
【4】试着创建一个项目
grails create-app test
cd test
grails --此时会报错，因为没有安装gradle
【5】基于gvm安装gradle
gvm install gradle
【6】重试第4步
（第一次会出现漫长下载，以后就不需要了， 这些文件都存在了~/.gradle/caches里）
ibeartekiMacBook-Pro:test ibear$ grails Download https://repo.grails.org/grails/core/org/grails/grails-gradle-plugin/3.0.3/grails-gradle-plugin-3.0.3.pom Download https://repo.grails.org/grails/core/com/bertramlabs/plugins/asset-pipeline-gradle/2.1.1/asset-pipeline-gradle-2.1.1.pom Download https://repo.grails.org/grails/core/io/spring/gradle/dependency-management-plugin/0.5.2.RELEASE/dependency-management-plugin-0.5.2.RELEASE.pom Download https://repo.grails.org/grails/core/org/codehaus/groovy/groovy/2.4.3/groovy-2.4.3.pom Download https://repo.grails.org/grails/core/org/slf4j/slf4j-api/1.7.10/slf4j-api-1.7.10.pom Download https://repo.grails.org/grails/core/org/slf4j/slf4j-parent/1.7.10/slf4j-parent-1.7.10.pom
经过漫长等待，终于出现了久违的提示符
grails> run-app
| Running application…
【总结】
1. 现在好多构建工具都是online模式的，很多依赖关系都自动去网上下载，但国内外的网不好，有时会有问题。
2. Grails的安装文档里没有提需要安装Gradle（症结），这个有点坑。。。
- 查看图片附件