javatime.groovy

import java.text.SimpleDateFormat

def formatter = new SimpleDateFormat("yyyy-MM-dd", Locale.US)
def outputFormatter = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss zzzz")
def date =  formatter.parse("2016-07-1")
//println date.class
//println date
println date.time
println outputFormatter.format(date)

//println TimeZone.default
//println TimeZone.getTimeZone("GMT+8")
//println TimeZone.getTimeZone("GMT-8")

def calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT+8"))
//println calendar
calendar = new GregorianCalendar(TimeZone.getTimeZone("GMT+8"))
calendar.setTime(date)
println calendar.get(Calendar.YEAR)
println calendar.get(Calendar.MONTH) - Calendar.JANUARY + 1

println ""

        Calendar currentTime =  new GregorianCalendar(TimeZone.getTimeZone("GMT+8")); // 中国东8区
        currentTime.setTime(date)
        def startTime, endTime
        int currentYear = currentTime.get(Calendar.YEAR);
        int currentMonth = currentTime.get(Calendar.MONTH) - Calendar.JANUARY + 1;
        if (currentMonth < 7) {
            startTime = (currentYear - 1) + "-07-01";
            endTime = currentYear + "-06-30";
        } else {
            startTime = currentYear + "-07-01";
            endTime = (currentYear + 1) + "-06-30";
        }
        println startTime
        println endTime