How to check if parameter/variable is available for Jenkins “Build with Parameters” in Groovy

问题

We used to be able to check if a parameter is available via:

binding.variables.containsKey()

or

getBinding().hasVariable()

But that no longer works at least as of Jenkins v 2.39. (These functions work for variables set within the groovy script but not the parameters from 'Build with Parameters'.)

回答1:

Instead of using binding.variables.containsKey() to check, you should use:

params.containsKey()

来源：https://stackoverflow.com/questions/42234822/how-to-check-if-parameter-variable-is-available-for-jenkins-build-with-paramete