java的System.getProperty，方法可以获取的值

[java.runtime.name,

sun.boot.library.path,

java.vm.version,

java.vm.vendor,

java.vendor.url,

path.separator,

java.vm.name,

file.encoding.pkg,

user.script,

user.country,

sun.java.launcher,

sun.os.patch.level,

java.vm.specification.name,

user.dir,

java.runtime.version,

java.awt.graphicsenv,

java.endorsed.dirs,

os.arch,

java.io.tmpdir,

line.separator,

java.vm.specification.vendor,

user.variant,

os.name,

sun.jnu.encoding,

java.library.path,

java.specification.name,

java.class.version,

sun.management.compiler,

os.version,

user.home,

user.timezone,

java.awt.printerjob,

file.encoding,

java.specification.version,

user.name,

java.class.path,

java.vm.specification.version,

sun.arch.data.model,

java.home,

sun.java.command,

java.specification.vendor,

user.language,

awt.toolkit,

java.vm.info,

java.version,

java.ext.dirs,

sun.boot.class.path,

java.vendor,

file.separator,

java.vendor.url.bug,

sun.cpu.endian,

sun.io.unicode.encoding,

sun.desktop,

sun.cpu.isalist]

总共54个固定