**DATE FROM:**
def format=new java.text.SimpleDateFormat("yyyyMMdd")
def cal=Calendar.getInstance()
cal.get(Calendar.YEAR);
cal.set(Calendar.MONTH, 0);
cal.set(Calendar.DAY_OF_MONTH, 31);
[format.format(cal.getTime())]
**DATE TO:**
def format=new java.text.SimpleDateFormat("yyyyMMdd")
def cal=Calendar.getInstance()
cal.add(Calendar.DAY_OF_MONTH,-cal.get(Calendar.DAY_OF_MONTH))
[format.format(cal.getTime())]
当年份发生变化时(2020 - 2021) - 它将上一年的 1 月与今年的 1 月混淆,
我必须进行更正,以便在 1 月(12 月报告)中提取 31.01 - 31.12 期间的数据。上一年的。
作业是错误的,因为它从 31.01.2021 到 31.12.2020 提取数据
// retrieve details of the current date
def cal = Calendar.instance;
def currentYear = cal.get(Calendar.YEAR);
def currentMonth = cal.get(Calendar.MONTH);
// set the instance to the start of the previous month
if ( currentMonth == 0 ) {
cal.set(currentYear-1, 11, 1);
} else {
cal.set(currentYear, (currentMonth-1), 1);
}
// extract the date, and format to a string
Date previousMonthStart = cal.time;
String previousMonthStartFormatted = previousMonthStart.format('yyyy-MM-dd');