网络进行时

在非web项目中需要获取项目在硬盘上的绝对路径，可以使用System.getProperty(“user.dir”)来获取。需要说明的事，这个值是运行java程序的当前目录，例如在D:\test下执行

这时得到的值是 D:\test。

另外System.getProperty()参数大全如下：

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

本文参考了 http://yueguangyuan.iteye.com/blog/71940

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