Get custom field value of issue using scriptrunner

[Mamikon Papikyan]

Hi, I added new custom field in my project. And now I want to get my custom field value, when I'm clicking the button of "Create" issue, so and I'm using this code

import com.atlassian.jira.issue.CustomFieldManager;
import com.atlassian.jira.issue.fields.CustomField;
import com.atlassian.jira.component.ComponentAccessor;

//Debug 
def log = Logger.getLogger("com.acme.CreateSubtask")
log.setLevel(Level.DEBUG)


def issueManager = ComponentAccessor.getIssueManager()
def customFieldManager = ComponentAccessor.getCustomFieldManager()
def cField = customFieldManager.getCustomFieldObject("10301")
def cFieldValue = issue.getCustomFieldValue(cField)

log.info("Field Value="+cFieldValue+"URL="+url+" Status="+connection.getResponseCode() as 
String)

 But I'm getting this error... this is my log:

The following log information was produced by this execution. Use statements like:log.info("...") to record logging information.

2020-05-26 13:40:41,732 ERROR [runner.AbstractScriptListener]: *************************************************************************************
2020-05-26 13:40:41,733 ERROR [runner.AbstractScriptListener]: Script function failed on event: com.atlassian.jira.event.issue.IssueEvent, file: null
java.lang.NullPointerException
	at com.atlassian.jira.issue.IssueImpl.getCustomFieldValue(IssueImpl.java:896)
	at com.atlassian.jira.issue.Issue$getCustomFieldValue$2.call(Unknown Source)
	at Script123.run(Script123.groovy:23)

 What's wrong?

[Peter-Dave Sheehan · Accepted solution]

See https://docs.atlassian.com/software/jira/docs/api/8.5.1/com/atlassian/jira/issue/CustomFieldManager.html#getCustomFieldObject-java.lang.Long-

Try either 

def cField = customFieldManager.getCustomFieldObject(10301)

Or 

def cField = customFieldManager.getCustomFieldObject("customfield_10301")

[Mamikon Papikyan]

Thank you!! The second variant very helpful...("customfield_10301"). It works perfectly..