这是一个java工具类，用于大多数需要判断日期是不是当天、本周、本月、本季度、本年，以更好的进行下一步判断，
那么如何去写代码吗？请直接看下面：
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| import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class DateStatusUtil {
public static boolean isToday(Date time) {
return isThisTime(time, "yyyy-MM-dd");
}
public static boolean isThisWeek(Date time) {
Calendar calendar = Calendar.getInstance();
int currentWeek = calendar.get(Calendar.WEEK_OF_YEAR);
calendar.setTime(time);
int paramWeek = calendar.get(Calendar.WEEK_OF_YEAR);
if (paramWeek == currentWeek) {
return true;
}
return false;
}
public static boolean isThisMonth(Date time) {
return isThisTime(time, "yyyy-MM");
}
public static boolean isThisYear(Date time) {
return isThisTime(time, "yyyy");
}
public static boolean isThisQuarter(Date time) {
Date QuarterStart = getCurrentQuarterStartTime();
Date QuarterEnd = getCurrentQuarterEndTime();
return time.after(QuarterStart) && time.before(QuarterEnd);
}
private static boolean isThisTime(Date time, String pattern) {
SimpleDateFormat sdf = new SimpleDateFormat(pattern);
String param = sdf.format(time);
String now = sdf.format(new Date());
if (param.equals(now)) {
return true;
}
return false;
}
public static Date getCurrentQuarterStartTime() {
Calendar c = Calendar.getInstance();
int currentMonth = c.get(Calendar.MONTH) + 1;
SimpleDateFormat longSdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
SimpleDateFormat shortSdf = new SimpleDateFormat("yyyy-MM-dd");
Date now = null;
try {
if (currentMonth >= 1 && currentMonth <= 3)
c.set(Calendar.MONTH, 0);
else if (currentMonth >= 4 && currentMonth <= 6)
c.set(Calendar.MONTH, 3);
else if (currentMonth >= 7 && currentMonth <= 9)
c.set(Calendar.MONTH, 4);
else if (currentMonth >= 10 && currentMonth <= 12)
c.set(Calendar.MONTH, 9);
c.set(Calendar.DATE, 1);
now = longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00");
} catch (Exception e) {
e.printStackTrace();
}
return now;
}
public static Date getCurrentQuarterEndTime() {
Calendar cal = Calendar.getInstance();
cal.setTime(getCurrentQuarterStartTime());
cal.add(Calendar.MONTH, 3);
return cal.getTime();
}
public static void main(String[] args) {
try {
System.out.println("当天：" + DateStatusUtil
.isToday(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse("2021-07-15 08:23:21")));
System.out.println("本周：" + DateStatusUtil
.isThisWeek(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse("2021-07-25 08:23:21")));
System.out.println("本月：" + DateStatusUtil
.isThisMonth(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse("2021-07-15 08:23:21")));
System.out.println("本年：" + DateStatusUtil
.isThisYear(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse("2022-07-15 08:23:21")));
System.out.println("本季度：" + DateStatusUtil
.isThisQuarter(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse("2021-07-15 08:23:21")));
} catch (Exception pe) {
System.out.println(pe.getMessage());
}
}
}
|
运行后输出：
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| 当天：true
本周：false
本月：true
本年：false
本季度：true
|
