Почему Grails использует старый JVM-компилятор на Mac OS x 7?

Question

Mac OS X 10.7

grails> !java -version 
java version "1.7.0_13" 
Java(TM) SE Runtime Environment (build 1.7.0_13-b20) 
Java HotSpot(TM) 64-Bit Server VM (build 23.7-b01, mixed mode) 

grails> !which java 
/Library/Java/JavaVirtualMachines/jdk1.7.0_13.jdk/Contents/Home/bin/java 

Я хочу использовать Java 1.7 NIO в одной из услуг, и я получил следующее:

grails> run-app 
... 
| Error Compilation error: startup failed: 
/path/to/Acquiring.groovy: 7: unable to resolve class java.nio.file.FileSystems 
@ line 7, column 1. 
    import java.nio.file.FileSystems 
^
/path/to/Acquiring.groovy: 8: unable to resolve class java.nio.file.Path 
@ line 8, column 1. 
    import java.nio.file.Path 
^
2 errors 
| Error Error running script run-app : org.codehaus.groovy.grails.cli.ScriptExitException (Use --stacktrace to see the full trace) 

Какой ад !? ОК. Я проверяю Java версии в коде: Println

println System.getProperty("java.version").startsWith('1.6')? 
"I use 1.6?! WTF?!":"It's ok" 

И, наконец, я вижу

I use 1.6?! WTF?! 

Или более конкретно

RuntimeMXBean RuntimemxBean = ManagementFactory.getRuntimeMXBean(); 
    println System.getProperty("java.version").startsWith('1.6')?"I use 1.6?!   WTF?!":"It's ok"; 
    println "VM_vmVendor: " + RuntimemxBean.vmVendor 
    println "VM_getName: " + RuntimemxBean.getName() 
    println "VM_getVmVersion: " + RuntimemxBean.getVmVersion() 
    println "VM_getVmName: " + RuntimemxBean.getVmName() 
    println "VM_namevendor: " + RuntimemxBean.getLibraryPath() 

    println "VM_getSystemProperties:" + 
      "\n ================= \n" +   RuntimemxBean.getSystemProperties() + 
      "\n ================= " 

    List<String> arguments = RuntimemxBean.getInputArguments(); 
    arguments.each { print it+ "\n" } 

превращается в:

I use 1.6?! WTF?! 
VM_vmVendor: Apple Inc. 
VM_getName: 91621@air.local 
VM_getVmVersion: 20.14-b01-445 
VM_getVmName: Java HotSpot(TM) 64-Bit Server VM 
VM_namevendor: .:/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java 
VM_getSystemProperties: 
================= 
[java.vm.version:20.14-b01-445, java.vendor.url:http://www.apple.com/, sun.jnu.encoding:MacRoman, grails.interactive.mode.enabled:true, java.vm.info:mixed mode, user.dir:/Users/me/Sites/java/grailsnew, grails.buildScope:all, sun.cpu.isalist:, java.awt.graphicsenv:apple.awt.CGraphicsEnvironment, sun.os.patch.level:unknown, catalina.useNaming:true, tools.jar:/Library/Java/Home/lib/tools.jar, java.io.tmpdir:/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/, user.home:/Users/me, java.awt.printerjob:apple.awt.CPrinterJob, java.version:1.6.0_41, file.encoding.pkg:sun.io, java.vendor.url.bug:http://bugreport.apple.com/, mrj.build:11M4107, file.encoding:UTF-8, line.separator: 
, sun.java.command:org.codehaus.groovy.grails.cli.support.GrailsStarter --main org.codehaus.groovy.grails.cli.GrailsScriptRunner --conf /Users/me/.grails/wrapper/2.2.0/grails-2.2.0/conf/groovy-starter.conf --classpath , javax.sql.DataSource.Factory:org.apache.commons.dbcp.BasicDataSourceFactory, java.vm.specification.vendor:Sun Microsystems Inc., grails.version:2.2.0, catalina.home:/Users/me/.grails/2.2.0/projects/grailsnew/tomcat, java.vm.vendor:Apple Inc., base.name:grailsnew, java.class.path:/Users/me/.grails/wrapper/2.2.0/grails-2.2.0/lib/org.codehaus.groovy/groovy-all/jars/groovy-all-2.0.5.jar:/Users/me/.grails/wrapper/2.2.0/grails-2.2.0/dist/grails-bootstrap-2.2.0.jar:/System/Library/Java/Support:/Users/me/.grails/wrapper/2.2.0/grails-2.2.0/lib/org.springsource.springloaded/springloaded-core/jars/springloaded-core-1.1.1.jar, awt.nativeDoubleBuffering:true, sun.io.unicode.encoding:UnicodeLittle, os.arch:x86_64, user.language:en, user.name:root, java.runtime.version:1.6.0_41-b02-445-11M4107, sun.boot.class.path:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/jsfd.jar:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar:/System/Library/Frameworks/JavaVM.framework/Frameworks/JavaRuntimeSupport.framework/Resources/Java/JavaRuntimeSupport.jar:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/ui.jar:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/laf.jar:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/sunrsasign.jar:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/jsse.jar:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/jce.jar:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/charsets.jar, gopherProxySet:false, sun.cpu.endian:little, groovy.starter.conf:/Users/me/.grails/wrapper/2.2.0/grails-2.2.0/conf/groovy-starter.conf, grails.env:development, ftp.nonProxyHosts:local|*.local|169.254/16|*.169.254/16, awt.toolkit:apple.awt.CToolkit, base.dir:/Users/me/Sites/java/grailsnew, sun.boot.library.path:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Libraries, java.vm.name:Java HotSpot(TM) 64-Bit Server VM, java.home:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home, net.sf.ehcache.skipUpdateCheck:true, grails.disable.exit:true, java.endorsed.dirs:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/lib/endorsed, sun.management.compiler:HotSpot 64-Bit Tiered Compilers, jna.platform.library.path:/usr/lib:/usr/lib, java.naming.factory.initial:org.apache.naming.java.javaURLContextFactory, java.runtime.name:Java(TM) SE Runtime Environment, catalina.base:/Users/me/.grails/2.2.0/projects/grailsnew/tomcat, grails.home:/Users/me/.grails/wrapper/2.2.0/grails-2.2.0, java.library.path:.:/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java, file.separator:/, java.specification.vendor:Sun Microsystems Inc., java.vm.specification.version:1.0, sun.java.launcher:SUN_STANDARD, grails.env.default:true, grails.env.set:true, user.timezone:Europe/Moscow, program.name:grails, http.nonProxyHosts:local|*.local|169.254/16|*.169.254/16, os.name:Mac OS X, path.separator::, java.ext.dirs:/Library/Java/Extensions:/System/Library/Java/Extensions:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/lib/ext, sun.arch.data.model:64, java.specification.name:Java Platform API Specification, os.version:10.7.5, mrj.version:1070.1.6.0_41-445, grails.env.initializing:false, springloaded:profile=grails;cacheDir=/Users/me/.grails/2.2.0/, grails.cli.args:, java.class.version:50.0, user.country:US, java.vendor:Apple Inc., socksNonProxyHosts:local|*.local|169.254/16|*.169.254/16, java.vm.specification.name:Java Virtual Machine Specification, org.mortbay.xml.XmlParser.NotValidating:true, java.specification.version:1.6, grails.server.factory:org.grails.plugins.tomcat.TomcatServerFactory, grails.shutdown.hook.installed:true, java.naming.factory.url.pkgs:org.apache.naming] 
================= 
-Xserver 
-Xmx768M 
-Xms64M 
-XX:PermSize=32m 
-XX:MaxPermSize=256m 
-Dfile.encoding=UTF-8 
-javaagent:/Users/me/.grails/wrapper/2.2.0/grails-2.2.0/lib/org.springsource.springloaded/springloaded-core/jars/springloaded-core-1.1.1.jar 
-Xverify:none 
-Dspringloaded=profile=grails;cacheDir=/Users/me/.grails/2.2.0/ 
-Dgrails.home=/Users/me/.grails/wrapper/2.2.0/grails-2.2.0 
-Dtools.jar=/Library/Java/Home/lib/tools.jar 

Answer 1

У меня была та же проблема, Grails использует java из/Sys TEM/Library/Каркасы/JavaVM.framework/Версии/CurrentJDK. Вы можете заставить Grails использовать другую версию, указав его в $ ПАПКА_УСТАНОВКИ_JAVA - добавьте следующие строки в ~/.profile или глобальный/и т.д./профиль

JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_13.jdk/Contents/Home; export JAVA_HOME 

источник ваш файл профиля и Grails должен работать на 1.7.0_13 версии

Примечание: Я не разработчик Java, мне нужно получить Grails и работает быстро - это не может быть лучшим ответом

Answer 2

Я рекомендую

export JAVA_HOME=$(/usr/libexec/java_home) 

в свой .profile, .bashrc, или другой файл, полученный при входе в систему.

См http://www.mkyong.com/java/how-to-set-java_home-environment-variable-on-mac-os-x/