EnvInject Error using Jenkins evaluated Groovy script - jenkins

Question

We have a evaluated Groovy script in Jenkins below:-
;
But the build is failing with error [EnvInject] - [ERROR] - [EnvInject] - [ERROR] - Problems occurs on injecting env vars as a build wrap: null
17:04:06 Finished: FAILURE.
Also how can I call the variable from Jenkins shell script to get last successful build date. -Thanks
def env = System.getenv()
def item = Jenkins.instance.getItem("")
def f=item.getLastFailedBuild()
println f.getTime()
def ff=env['item.getLastSuccessfulBuild()]
println ff.getTime().format("YYYY-MMM-dd HH:MM:SS")
println ff.getTime().format("dd-MM-yyyy")
def pa = new ParametersAction([new StringParameterValue('PARAMETER_NAME', ff)]);
Thread.currentThread().executable.addAction(pa)
println 'Script finished! \nenv variable

Answer 1

The easy answer is that on line 7 you have no closing quote here:
def ff=env['item.getLastSuccessfulBuild()]
However, that is not the last of your issues:
I don't think you want to use ff = env['item.getLastSuccessfulBuild()]'] but rather just a simple ff = item.getLastSuccessfulBuild()
You need to include the following import lines to be able to use the associated classes:
import jenkins.model.Jenkins
import hudson.model.ParametersAction
import hudson.model.StringParameterValue
The line item = Jenkins.instance.getItem("Fastlane_Test") doesn't work in my environment, even replacing "Fastlane_Test" with a job that exists.I've replaced it with item = Jenkins.instance.getItemByFullName("Fastlane_Test").
Also, for safety, you should test to ensure item isn't null
Finally, have you missed the Thread.currentThread().executable.addAction(pa) line out for a reason? You need to use it to add the new parameter to the running environment.
The following code should hopefully be a reasonable starting point, however please note that I've removed the line def env = System.getenv() since env isn't used anywhere else in the code later:
import jenkins.model.Jenkins
import hudson.model.ParametersAction
import hudson.model.StringParameterValue
def item = Jenkins.instance.getItemByFullName("Fastlane_Test")
if (item) {
def f=item.getLastFailedBuild()
println f.getTime()
def ff=item.getLastSuccessfulBuild()
println ff.getTime().format("YYYY-MMM-dd HH:MM:SS")
println ff.getTime().format("dd-MM-yyyy")
def pa = new ParametersAction([new StringParameterValue("LAST_GOOD", ff.getTime().toString())])
Thread.currentThread().executable.addAction(pa)
}
Hope you find this of assistance, although I see it's been a while since you posted the question.
Kind Regards

Answer 2

Thanks Nick!!
I added the below "execute system groovyscript" as part of Jenkins job and it worked:
import jenkins.model.Jenkins
`. def item = Jenkins.instance.getItem("Job")
def ff=item.getLastSuccessfulBuild()
println ff.getTime().format("yyyy-MM-dd")
def temp = ff.getTime().format("yyyy-MM-dd")
import hudson.model.*
def build = Thread.currentThread().executable
def pa = new ParametersAction([
new StringParameterValue("LAST_BUILD_DATE",temp)
])
build.addAction(pa)`