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      src/main/java/DateUtil.java

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src/main/java/DateUtil.java

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import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;
/**
* @author yanpeng
* @version 1.0
* @desc TODO
* @company 北京中经网软件有限公司
* @date 2021/8/10 9:51
*/
public class DateUtil {
public static void main(String[] args) {
Map<String, Integer> beforeDate = null;
try {
beforeDate = getBeforeDate(0);
} catch (ParseException e) {
e.printStackTrace();
}
System.out.println(beforeDate);
}
/**
* @param checkCalculateCycle 考核计算周期 0= 1= 2= 3= 4=
* @return
*/
public static Map<String, Integer> getBeforeDate(int checkCalculateCycle) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date parse = sdf.parse("2021-08-01");
Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT+08:00"));
// calendar.setTime(parse);
int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH) + 1; //获取月份,0表示1月份
int quarter = month / 3;
Map<String, Integer> map = new HashMap<String, Integer>();
map.put("year", year);
if (checkCalculateCycle == 4) {
map.put("year", --year);
return map;
} else if (checkCalculateCycle == 3) {
if (month <= 3) {
map.put("year", --year);
map.put("quarter", 4);
} else {
if (month % 3 == 0) {
quarter--;
}
map.put("quarter", quarter);
}
return map;
} else if (checkCalculateCycle == 2) {
calendar.add(Calendar.MONTH, -1);
month = calendar.get(Calendar.MONTH) + 1;
map.put("year", calendar.get(Calendar.YEAR));
map.put("month", month);
map.put("quarter", month % 3 == 0 ? (month / 3) : (month / 3 + 1));
return map;
} else if (checkCalculateCycle == 1) {
calendar.add(Calendar.WEEK_OF_MONTH, -1);
month = calendar.get(Calendar.MONTH) + 1;
map.put("year", calendar.get(Calendar.YEAR));
map.put("quarter", month % 3 == 0 ? (month / 3) : (month / 3 + 1));
map.put("month", month);
map.put("week", calendar.get(Calendar.WEEK_OF_MONTH));
return map;
} else if (checkCalculateCycle == 0) {
calendar.add(Calendar.DAY_OF_MONTH, -1);
month = calendar.get(Calendar.MONTH) + 1;
map.put("year", calendar.get(Calendar.YEAR));
map.put("quarter", month % 3 == 0 ? (month / 3) : (month / 3 + 1));
map.put("month", month);
map.put("week", calendar.get(Calendar.WEEK_OF_MONTH));
map.put("day", calendar.get(Calendar.DAY_OF_MONTH));
return map;
}
return map;
}
}
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