import static java.util.Calendar.YEAR
import static java.util.Calendar.MONTH
import static java.util.Calendar.DATE
def Now = new Date()
def nextYear = Now[YEAR] + 1
def nextDate = Now[DATE] + 1
def prevMonth = Now[MONTH] + 1
def oneYearFromNow = Now.updated(year: nextYear, date: nextDate, month: prevMonth).format("yyyy-MM-dd")
2016-04-21
如果是设置单个的话用
Now.set(year: nextYear)//设置年