- import java.text.SimpleDateFormat;
- import java.util.Calendar;
- import java.util.Date;
- /**
- * 获取 当前年、半年、季度、月、日、小时 开始结束时间
- */
- private final SimpleDateFormat shortSdf;
- private final SimpleDateFormat longHourSdf;
- private final SimpleDateFormat longSdf;
- public RemindDateUtils(){
- this.shortSdf = new SimpleDateFormat("yyyy-MM-dd");
- this.longHourSdf = new SimpleDateFormat("yyyy-MM-dd HH");
- this.longSdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
- }
- /**
- * 获得本周的第一天,周一
- *
- * @return
- */
- public Date getCurrentWeekDayStartTime() {
- Calendar c = Calendar.getInstance();
- try {
- int weekday = c.get(Calendar.DAY_OF_WEEK) - 2;
- c.add(Calendar.DATE, -weekday);
- c.setTime(longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00"));
- } catch (Exception e) {
- e.printStackTrace();
- }
- return c.getTime();
- }
- /**
- * 获得本周的最后一天,周日
- *
- * @return
- */
- public Date getCurrentWeekDayEndTime() {
- Calendar c = Calendar.getInstance();
- try {
- int weekday = c.get(Calendar.DAY_OF_WEEK);
- c.add(Calendar.DATE, 8 - weekday);
- c.setTime(longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59"));
- } catch (Exception e) {
- e.printStackTrace();
- }
- return c.getTime();
- }
- /**
- * 获得本天的开始时间,即2012-01-01 00:00:00
- *
- * @return
- */
- public Date getCurrentDayStartTime() {
- Date now = new Date();
- try {
- now = shortSdf.parse(shortSdf.format(now));
- } catch (Exception e) {
- e.printStackTrace();
- }
- return now;
- }
- /**
- * 获得本天的结束时间,即2012-01-01 23:59:59
- *
- * @return
- */
- public Date getCurrentDayEndTime() {
- Date now = new Date();
- try {
- now = longSdf.parse(shortSdf.format(now) + " 23:59:59");
- } catch (Exception e) {
- e.printStackTrace();
- }
- return now;
- }
- /**
- * 获得本小时的开始时间,即2012-01-01 23:59:59
- *
- * @return
- */
- public Date getCurrentHourStartTime() {
- Date now = new Date();
- try {
- now = longHourSdf.parse(longHourSdf.format(now));
- } catch (Exception e) {
- e.printStackTrace();
- }
- return now;
- }
- /**
- * 获得本小时的结束时间,即2012-01-01 23:59:59
- *
- * @return
- */
- public Date getCurrentHourEndTime() {
- Date now = new Date();
- try {
- now = longSdf.parse(longHourSdf.format(now) + ":59:59");
- } catch (Exception e) {
- e.printStackTrace();
- }
- return now;
- }
- /**
- * 获得本月的开始时间,即2012-01-01 00:00:00
- *
- * @return
- */
- public Date getCurrentMonthStartTime() {
- Calendar c = Calendar.getInstance();
- Date now = null;
- try {
- c.set(Calendar.DATE, 1);
- now = shortSdf.parse(shortSdf.format(c.getTime()));
- } catch (Exception e) {
- e.printStackTrace();
- }
- return now;
- }
- /**
- * 当前月的结束时间,即2012-01-31 23:59:59
- *
- * @return
- */
- public Date getCurrentMonthEndTime() {
- Calendar c = Calendar.getInstance();
- Date now = null;
- try {
- c.set(Calendar.DATE, 1);
- c.add(Calendar.MONTH, 1);
- c.add(Calendar.DATE, -1);
- now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
- } catch (Exception e) {
- e.printStackTrace();
- }
- return now;
- }
- /**
- * 当前年的开始时间,即2012-01-01 00:00:00
- *
- * @return
- */
- public Date getCurrentYearStartTime() {
- Calendar c = Calendar.getInstance();
- Date now = null;
- try {
- c.set(Calendar.MONTH, 0);
- c.set(Calendar.DATE, 1);
- now = shortSdf.parse(shortSdf.format(c.getTime()));
- } catch (Exception e) {
- e.printStackTrace();
- }
- return now;
- }
- /**
- * 当前年的结束时间,即2012-12-31 23:59:59
- *
- * @return
- */
- public Date getCurrentYearEndTime() {
- Calendar c = Calendar.getInstance();
- Date now = null;
- try {
- c.set(Calendar.MONTH, 11);
- c.set(Calendar.DATE, 31);
- now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
- } catch (Exception e) {
- e.printStackTrace();
- }
- return now;
- }
- /**
- * 当前季度的开始时间,即2012-01-1 00:00:00
- *
- * @return
- */
- public Date getCurrentQuarterStartTime() {
- Calendar c = Calendar.getInstance();
- int currentMonth = c.get(Calendar.MONTH) + 1;
- 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;
- }
- /**
- * 当前季度的结束时间,即2012-03-31 23:59:59
- *
- * @return
- */
- public Date getCurrentQuarterEndTime() {
- Calendar c = Calendar.getInstance();
- int currentMonth = c.get(Calendar.MONTH) + 1;
- Date now = null;
- try {
- if (currentMonth >= 1 && currentMonth <= 3) {
- c.set(Calendar.MONTH, 2);
- c.set(Calendar.DATE, 31);
- } else if (currentMonth >= 4 && currentMonth <= 6) {
- c.set(Calendar.MONTH, 5);
- c.set(Calendar.DATE, 30);
- } else if (currentMonth >= 7 && currentMonth <= 9) {
- c.set(Calendar.MONTH, 8);
- c.set(Calendar.DATE, 30);
- } else if (currentMonth >= 10 && currentMonth <= 12) {
- c.set(Calendar.MONTH, 11);
- c.set(Calendar.DATE, 31);
- }
- now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
- } catch (Exception e) {
- e.printStackTrace();
- }
- return now;
- }
- /**
- * 获取前/后半年的开始时间
- * @return
- */
- public Date getHalfYearStartTime(){
- Calendar c = Calendar.getInstance();
- int currentMonth = c.get(Calendar.MONTH) + 1;
- Date now = null;
- try {
- if (currentMonth >= 1 && currentMonth <= 6){
- c.set(Calendar.MONTH, 0);
- }else if (currentMonth >= 7 && currentMonth <= 12){
- c.set(Calendar.MONTH, 6);
- }
- c.set(Calendar.DATE, 1);
- now = longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00");
- } catch (Exception e) {
- e.printStackTrace();
- }
- return now;
- }
- /**
- * 获取前/后半年的结束时间
- * @return
- */
- public Date getHalfYearEndTime(){
- Calendar c = Calendar.getInstance();
- int currentMonth = c.get(Calendar.MONTH) + 1;
- Date now = null;
- try {
- if (currentMonth >= 1 && currentMonth <= 6){
- c.set(Calendar.MONTH, 5);
- c.set(Calendar.DATE, 30);
- }else if (currentMonth >= 7 && currentMonth <= 12){
- c.set(Calendar.MONTH, 11);
- c.set(Calendar.DATE, 31);
- }
- now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
- } catch (Exception e) {
- e.printStackTrace();
- }
- return now;
- }
- /**
- * 获取前一天日期 及星期
- */
- public class RemindDateUtils {
- private void initDate(){
- String[] weekDays = {"周日","周一","周二","周三","周四","周五","周六"};
- Calendar cal = Calendar.getInstance();
- cal.add(Calendar.Date,-1);
- int i = cal.get(Calendar.DAY_OF_WEEK)-1;
- if(i<0){
- i=0;
- }
- String yesterday = new SimpleDateFormate("yyyy年MM月dd日").format(cal.getTime());
- String w = weekDays[i];
- }
- }
- }
PS:SimpleDateFormat是线程不安全的。