Velocity - random number generation in a template

问题

I'd like to assign a random value to a variable in a velocity template. However,

#set ($random = $math.getRandom())

returns: java.util.Random@5706937e. How to obtain this value or assign a random value to a variable in a different way from within a velocity template?

回答1:

#set ($random = $math.getRandom())

use velocity 1.7 from this link enter link description here

and in vm file use

#set($mathTool = $serviceLocator.findService("org.apache.velocity.tools.generic.MathTool"))

//range: 1 - 20

#set($my_rnd=$mathTool.random(1,20))

or

//range: 0 - 1

#set($my_rnd=$mathTool.getRandom())

来源：https://stackoverflow.com/questions/24758937/velocity-random-number-generation-in-a-template