How to use

setReporterId

method

in

com.atlassian.jira.issue.IssueInputParameters

@Override
protected void finaliseOperation(String finalValue, IssueInputParameters parameters, ErrorCollection errors)
{
  parameters.setReporterId(finalValue);
}

@Override
public void populateInputParams(CachingUserMapper userMapper, IssueInputParameters inputParameters, CopyIssueBean copyIssueBean,
    FieldLayoutItem fieldLayoutItem, Project project, IssueType issueType) {
  final ApplicationUser loggedIn = authenticationContext.getLoggedInUser();
  final ApplicationUser reporter = copyIssueBean.getReporter() != null ? userMapper.mapUser(copyIssueBean.getReporter()) : null;
  if (!fieldLayoutItem.isHidden()) {
    if (reporter != null) {
      inputParameters.setReporterId(reporter.getName());
    } else if (fieldLayoutItem.isRequired()) {
      String[] defaultFieldValue = defaultFieldValuesManager.getDefaultFieldValue(project.getKey(), getFieldId(), issueType.getName());
      if (defaultFieldValue != null && defaultFieldValue.length > 0) {
        inputParameters.setReporterId(defaultFieldValue[0]);
      } else if (loggedIn != null) {
        inputParameters.setReporterId(loggedIn.getName());
      }
    }
  }
}

private IssueInputParameters getIssueInputParameters(String projectId, String issueTypeId, String summary, ApplicationUser reporter)
{
  final IssueInputParameters issueInputParameters = new IssueInputParametersImpl();
  issueInputParameters.setProjectId(new Long(projectId));
  issueInputParameters.setIssueTypeId(issueTypeId);
  issueInputParameters.setSummary(summary);
  issueInputParameters.setReporterId(reporter.getName());
  issueInputParameters.setAssigneeId("-1");
  issueInputParameters.setPriorityId(constantsManager.getDefaultPriorityObject().getId());
  return issueInputParameters;
}

if (StringUtils.isNotEmpty(rIssue.getReporter()))
  issueInputParameters.setReporterId(rIssue.getReporter());
  issueInputParameters.setReporterId(user.getName());