您可以像这样获取全局属性:

You can get global properties like this:

import jenkins.model.Jenkins
def envVars = Jenkins.instance.getGlobalNodeProperties()[0].getEnvVars() 
println envVars['myVar']

我参考了下面的链接，了解如何以编程方式设置全局属性.https://groups.google.com/forum/#!topic/jenkinsci-users/KgCGuDmED1Q

I referred to the link below, about how to set global properties programatically. https://groups.google.com/forum/#!topic/jenkinsci-users/KgCGuDmED1Q