java时间操作工具类
import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.math.NumberUtils;
public class DateUtil {
public static final String DATETIME = "yyyy-MM-dd HH:mm:ss";
public static final String DATE = "yyyy-MM-dd";
public DateUtil() {
}
public static String datetimeToStr(Date date, String format) {
if (date == null) {
return null;
} else {
SimpleDateFormat sdf = new SimpleDateFormat(format);
return sdf.format(date);
}
}
public static String dateTimeToStr(Date date) {
return datetimeToStr(date, "yyyy-MM-dd HH:mm:ss");
}
public static String dateToStr(Date date) {
return datetimeToStr(date, "yyyy-MM-dd");
}
public static String dateToStr(Date date, String format) {
return datetimeToStr(date, format);
}
public static String getCurrentDate() {
return (new SimpleDateFormat("yyyy-MM-dd")).format(new Date());
}
public static String getCurrentDate(String format) {
return (new SimpleDateFormat(format)).format(new Date());
}
public static String getCurrentDatetime() {
return (new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")).format(new Date());
}
public static String getCurrentDatetime(String format) {
return (new SimpleDateFormat(format)).format(new Date());
}
public static int getCurrentTimeHashCode() {
return String.valueOf(System.currentTimeMillis()).hashCode();
}
public static Date getDateBegin(Date date) {
SimpleDateFormat ymdFormat = new SimpleDateFormat("yyyy-MM-dd");
if (date != null) {
try {
return DateFormat.getDateInstance(2, Locale.CHINA).parse(ymdFormat.format(date));
} catch (ParseException var3) {
System.err.println("DataFromat error");
}
}
return null;
}
public static Date getDateEnd(Date date) {
SimpleDateFormat ymdFormat = new SimpleDateFormat("yyyy-MM-dd");
if (date != null) {
try {
Date endDate = strToDate(ymdFormat.format(new Date(date.getTime() + 86400000L)));
endDate = new Date(endDate.getTime() - 1000L);
return endDate;
} catch (Exception var3) {
System.err.println("DataFromat error");
}
}
return null;
}
public static long getNow() {
return System.currentTimeMillis();
}
public static String getTime() {
Date d = new Date();
String re = datetimeToStr(d, "yyyyMMddHHmmssSSS");
return re;
}
public static String getTime(String format) {
Date d = new Date();
String re = datetimeToStr(d, format);
return re;
}
public static Date strToFormatDate(String date, String format) {
if (date == null) {
return null;
} else {
SimpleDateFormat sdf = new SimpleDateFormat(format);
return sdf.parse(date, new ParsePosition(0));
}
}
public static Date strToDate(String date) {
return strToFormatDate(date, "yyyy-MM-dd");
}
public static final Date strToDate(String dateStr, String format) {
return strToFormatDate(dateStr, format);
}
public static Date strToDateTime(String date) {
return strToFormatDate(date, "yyyy-MM-dd HH:mm:ss");
}
public static Date strToDateTime(String date, String format) {
return strToFormatDate(date, format);
}
public static Timestamp strToTimestamp(String str) throws Exception {
if (StringUtils.isEmpty(str)) {
throw new Exception("转换错误");
} else {
return str.trim().length() > 10 ? new Timestamp((new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")).parse(str).getTime()) : new Timestamp((new SimpleDateFormat("yyyy-MM-dd")).parse(str).getTime());
}
}
public static Timestamp strToTimestamp(String sDate, String sFormat) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat(sFormat);
Date t = sdf.parse(sDate);
return new Timestamp(t.getTime());
}
public static boolean validateExpireDate(long timeMillis, long expireTimeMillis) {
return getNow() - timeMillis > expireTimeMillis;
}
public static String getHHmmssSSS() {
Date d = new Date();
return getHHmmssSSS(d);
}
public static String getHHmmssSSS(Date d) {
int hh = Integer.valueOf(datetimeToStr(d, "HH"));
int mm = Integer.valueOf(datetimeToStr(d, "mm"));
int ss = Integer.valueOf(datetimeToStr(d, "ss"));
int sss = Integer.valueOf(datetimeToStr(d, "SSS"));
int time = 0;
if (hh != 0) {
time += hh * 60 * 60 * 1000;
}
if (mm != 0) {
time += mm * 60 * 1000;
}
if (ss != 0) {
time += ss * 1000;
}
if (sss != 0) {
time += sss;
}
String str;
for(str = String.valueOf(time); str.length() < 8; str = "0" + str) {
;
}
return str;
}
public static Date caculateDate(Date date, Integer count, int status) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.set(status, calendar.get(status) + count);
return calendar.getTime();
}
public static int caculateDaysNumber(int year, int month) {
Calendar cal = Calendar.getInstance();
cal.set(1, year);
cal.set(2, month - 1);
return cal.getActualMaximum(5);
}
public static Date caculateDateByNextBaseMonth(Date now, Integer month) {
Calendar cal = Calendar.getInstance();
cal.setTime(now);
cal.set(2, cal.get(2) + month + NumberUtils.INTEGER_ONE);
cal.set(5, NumberUtils.INTEGER_ZERO);
return cal.getTime();
}
public static Date caculateFinallyDatebyDateType(Date date, int dateType, int dateNumber) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
switch(dateType) {
case 1:
calendar.add(dateType, dateNumber + 1);
calendar.set(2, 0);
calendar.set(5, NumberUtils.INTEGER_ZERO);
break;
case 2:
calendar.add(2, dateNumber + 1);
calendar.set(5, NumberUtils.INTEGER_ZERO);
break;
case 3:
case 4:
default:
throw new RuntimeException("dateType value error");
case 5:
calendar.add(5, dateNumber);
}
return calendar.getTime();
}
public static int compareTime(String dateTime1, String dateTime2) {
if (!StringUtils.isEmpty(dateTime1) && !StringUtils.isEmpty(dateTime1)) {
DateFormat df = null;
if (dateTime1.length() == 10 && dateTime2.length() == 10) {
df = new SimpleDateFormat("yyyy-MM-dd");
} else {
if (dateTime1.length() != 19 || dateTime2.length() != 19) {
return 2;
}
df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
}
Calendar c1 = Calendar.getInstance();
Calendar c2 = Calendar.getInstance();
try {
c1.setTime(df.parse(dateTime1));
c2.setTime(df.parse(dateTime2));
} catch (ParseException var6) {
System.err.println("格式不正确");
}
int result = c1.compareTo(c2);
return result;
} else {
return 2;
}
}
public static void main(String[] args) {
Date now = new Date();
String nowStr = dateTimeToStr(now);
System.out.println(nowStr);
Date fDate = caculateFinallyDatebyDateType(now, 10, 3);
System.out.println(dateTimeToStr(fDate));
}
}
