Reading and Writing to a properties file - Groovy Example，

（转载）https://bowerstudios.com/node/1066

Create the properties object,and load it from the file system:
Properties props = new Properties()
File propsFile = new File('/usr/local/etc/test.properties')
props.load(propsFile.newDataInputStream())

Take a peek:
println props.getProperty('porcupine')

Write a new random value and persist it to the file system:
Integer rand = new Random().next(4)
props.setProperty('porcupine',rand.toString())
props.store(propsFile.newWriter(),null)

Peek again:
props.load(propsFile.newDataInputStream())println props.getProperty('porcupine')