ant 内置属性，ant内置

ant 内置属性，ant内置

以下值可以使用 

<echo>${java.version}</echo>

<echo message="java version: ${java.version}" />

打印，其它如法炮制。

java.version	Java Runtime Environment version
java.vendor	Java Runtime Environment vendor
java.vendor.url	Java vendor URL
java.home	Java installation directory
java.vm.specification.version	Java Virtual Machine specification version
java.vm.specification.vendor	Java Virtual Machine specification vendor
java.vm.specification.name	Java Virtual Machine specification name
java.vm.version	Java Virtual Machine implementation version
java.vm.vendor	Java Virtual Machine implementation vendor
java.vm.name	Java Virtual Machine implementation name
java.specification.version	Java Runtime Environment specification version
java.specification.vendor	Java Runtime Environment specification vendor
java.specification.name	Java Runtime Environment specification name
java.class.version	Java class format version number
java.class.path	Java class path
java.library.path	List of paths to search when loading libraries
java.io.tmpdir	Default temp file path
java.compiler	Name of JIT compiler to use
java.ext.dirs	Path of extension directory or directories
os.name	Operating system name
os.arch	Operating system architecture
os.version	Operating system version
file.separator	File separator ("/" on UNIX)
path.separator	Path separator (":" on UNIX)
line.separator	Line separator ("\n" on UNIX)
user.name	User's account name
user.home	User's home directory
user.dir	User's current working directory

baseddir --project基目录的绝对路径 (与<project>的basedir属性一样)

ant.file --buildFile的绝对路径

ant.version --Ant的版本

ant.project.name --当前执行的project的名字,由<project>的name属性设定

ant.project.default-target --当前执行的project的default-target名字

ant.project.invoked-targets --a comma separated list of the targets that have been specified on                      the command line (the IDE, an <ant> task ...) when invoking the current project.

ant.java.version --Ant版本（“1.2”，“1.3”，“1.4”，“1.5”，“1.6”）

ant.core.lib --ant.jar文件的绝对路径