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+package com.idea.util;
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+
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+import org.apache.commons.lang3.time.DateFormatUtils;
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+
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+import java.lang.management.ManagementFactory;
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+import java.text.ParseException;
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+import java.text.SimpleDateFormat;
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+import java.time.*;
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+import java.util.Calendar;
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+import java.util.Date;
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+
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+/**
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+ * 时间工具类
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+ *
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+ * @author assets
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+ */
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+public class DateUtils extends org.apache.commons.lang3.time.DateUtils {
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+ public static String YYYY = "yyyy";
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+
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+ public static String YYYY_MM = "yyyy-MM";
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+
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+ public static String YYYY_MM_DD = "yyyy-MM-dd";
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+
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+ public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";
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+
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+ public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";
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+
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+ public final static String DATE_CH = "yyyy年MM月dd日";
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+
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+ private static String[] parsePatterns = {
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+ "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
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+ "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
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+ "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM", "yyyyMMddHHmmss","yyyy年MM月dd日"};
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+
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+ /**
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+ * 获取当前Date型日期
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+ *
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+ * @return Date() 当前日期
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+ */
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+ public static Date getNowDate() {
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+ return new Date();
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+ }
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+
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+ /**
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+ * 获取当前日期, 默认格式为yyyy-MM-dd
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+ *
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+ * @return String
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+ */
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+ public static String getDate() {
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+ return dateTimeNow(YYYY_MM_DD);
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+ }
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+
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+ public static final String getTime() {
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+ return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
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+ }
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+
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+ public static final String dateTimeNow() {
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+ return dateTimeNow(YYYYMMDDHHMMSS);
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+ }
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+
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+ public static final String dateTimeNow(final String format) {
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+ return parseDateToStr(format, new Date());
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+ }
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+
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+ public static final String dateTime(final Date date) {
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+ return parseDateToStr(YYYY_MM_DD, date);
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+ }
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+
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+ public static final String parseDateToStr(final String format, final Date date) {
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+ return new SimpleDateFormat(format).format(date);
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+ }
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+
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+ public static final Date dateTime(final String format, final String ts) {
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+ try {
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+ return new SimpleDateFormat(format).parse(ts);
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+ } catch (ParseException e) {
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+ throw new RuntimeException(e);
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+ }
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+ }
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+
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+ /**
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+ * 日期路径 即年/月/日 如2018/08/08
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+ */
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+ public static final String datePath() {
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+ Date now = new Date();
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+ return DateFormatUtils.format(now, "yyyy/MM/dd");
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+ }
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+
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+ /**
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+ * 日期路径 即年/月/日 如20180808
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+ */
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+ public static final String dateTime() {
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+ Date now = new Date();
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+ return DateFormatUtils.format(now, "yyyyMMdd");
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+ }
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+
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+ /**
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+ * 日期型字符串转化为日期 格式
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+ */
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+ public static Date parseDate(Object str) {
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+ if (str == null) {
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+ return null;
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+ }
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+ try {
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+ return parseDate(str.toString(), parsePatterns);
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+ } catch (ParseException e) {
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+ return null;
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+ }
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+ }
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+
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+ /**
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+ * 获取服务器启动时间
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+ */
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+ public static Date getServerStartDate() {
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+ long time = ManagementFactory.getRuntimeMXBean().getStartTime();
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+ return new Date(time);
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+ }
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+
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+ /**
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+ * 计算两个时间差
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+ */
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+ public static String getDatePoor(Date endDate, Date nowDate) {
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+ long nd = 1000 * 24 * 60 * 60;
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+ long nh = 1000 * 60 * 60;
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+ long nm = 1000 * 60;
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+ // long ns = 1000;
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+ // 获得两个时间的毫秒时间差异
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+ long diff = endDate.getTime() - nowDate.getTime();
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+ // 计算差多少天
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+ long day = diff / nd;
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+ // 计算差多少小时
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+ long hour = diff % nd / nh;
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+ // 计算差多少分钟
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+ long min = diff % nd % nh / nm;
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+ // 计算差多少秒//输出结果
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+ // long sec = diff % nd % nh % nm / ns;
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+ return day + "天" + hour + "小时" + min + "分钟";
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+ }
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+
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+ /**
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+ * 增加 LocalDateTime ==> Date
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+ */
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+ public static Date toDate(LocalDateTime temporalAccessor) {
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+ ZonedDateTime zdt = temporalAccessor.atZone(ZoneId.systemDefault());
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+ return Date.from(zdt.toInstant());
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+ }
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+
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+ /**
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+ * 增加 LocalDate ==> Date
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+ */
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+ public static Date toDate(LocalDate temporalAccessor) {
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+ LocalDateTime localDateTime = LocalDateTime.of(temporalAccessor, LocalTime.of(0, 0, 0));
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+ ZonedDateTime zdt = localDateTime.atZone(ZoneId.systemDefault());
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+ return Date.from(zdt.toInstant());
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+ }
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+
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+ /**
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+ * 计算两个日期之间相差的天数
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+ *
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+ * @param smdate 较小的时间
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+ * @param bdate 较大的时间
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+ * @return 相差天数
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+ * @throws ParseException
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+ */
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+ public static int daysBetween(Date smdate, Date bdate) throws ParseException {
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+ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
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+ smdate = sdf.parse(sdf.format(smdate));
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+ bdate = sdf.parse(sdf.format(bdate));
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+ Calendar cal = Calendar.getInstance();
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+ cal.setTime(smdate);
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+ long time1 = cal.getTimeInMillis();
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+ cal.setTime(bdate);
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+ long time2 = cal.getTimeInMillis();
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+ long between_days = (time2 - time1) / (1000 * 3600 * 24);
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+
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+ return Integer.parseInt(String.valueOf(between_days));
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+ }
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+
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+ /**
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+ * 获取随机时间字符串
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+ *
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+ * @return
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+ */
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+ public static String getTimeNum() {
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+ SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
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+ String timespan = sdf.format(new Date());
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+ String random = (System.currentTimeMillis() + "").substring(11);
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+ String timeNum = timespan + random;
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+ return timeNum;
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+ }
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+
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+ /**
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+ * 计算两个时间差几年
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+ */
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+ public static Integer dayComparePrecise(Date fromDate, Date toDate) {
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+ Calendar from = Calendar.getInstance();
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+ from.setTime(fromDate);
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+ Calendar to = Calendar.getInstance();
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+ to.setTime(toDate);
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+ int fromYear = from.get(Calendar.YEAR);
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+ int toYear = to.get(Calendar.YEAR);
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+ int year = toYear - fromYear;
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+ return year;
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+ }
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+
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+
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+ /**
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+ * 验证日期是否真实有效
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+ *
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+ * @param var
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+ * @return
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+ */
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+ public static String isValid(String var) {
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+ try {
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+
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+// DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy/MM/dd").withResolverStyle(ResolverStyle.SMART);
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+// formatter.format( LocalDate.parse(var,formatter));
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+ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
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+ sdf.setLenient(false);
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+ sdf.format(sdf.parse(var));
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+ } catch (Exception e) {
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+ return null;
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+ }
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+ return "1";
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+
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+ }
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+
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+ public static String dateStr(Date date, String pattern) {
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+ if (date == null) {
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+ return "/";
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+ }
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+ SimpleDateFormat dateformat = new SimpleDateFormat(pattern);
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+ String dateStr = dateformat.format(date);
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+ return dateStr;
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+ }
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+
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+ /**
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+ * 获取年份
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+ *
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+ * @param date
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+ * @param amount
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+ * @return
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+ */
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+ public static String getYear(Date date, int amount) {
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+ Calendar c = Calendar.getInstance();
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+ c.setTime(date);
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+ c.add(Calendar.YEAR, amount);
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+ int year = c.get(Calendar.YEAR);
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+ return String.valueOf(year);
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+ }
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+
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+ /**
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+ * 获取月份
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+ *
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+ * @param date
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+ * @param amount
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+ * @return
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+ */
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+ public static String getMonth(Date date, int amount) {
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+ Calendar c = Calendar.getInstance();
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+ c.setTime(date);
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+ c.add(Calendar.MONTH, amount);
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+ int month = c.get(Calendar.MONTH) + 1;
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+ return String.valueOf(month);
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+ }
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+
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+ /**
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+ * 获取天
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+ *
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+ * @param date
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+ * @param amount
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+ * @return
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+ */
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+ public static String getDay(Date date, int amount) {
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+ Calendar c = Calendar.getInstance();
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+ c.setTime(date);
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+ c.add(Calendar.DAY_OF_MONTH, amount);
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+ int day = c.get(Calendar.DAY_OF_MONTH);
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+ return String.valueOf(day);
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+ }
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+
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+ /**
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+ * 计算两个日期相差的月份
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+ * 该方法的计算不考虑日对月数的影响,比如2020-06-30与2020-07-01计算的结果依然是相差1个月
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+ *
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+ * @param largeDate
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+ * @param smallDate
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+ * @return
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+ */
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+ public static int getMonthDiff(Date largeDate, Date smallDate) {
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+ Calendar c1 = Calendar.getInstance();
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+ Calendar c2 = Calendar.getInstance();
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+ c1.setTime(largeDate);
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+ c2.setTime(smallDate);
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+ int year1 = c1.get(Calendar.YEAR);
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+ int year2 = c2.get(Calendar.YEAR);
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+ int month1 = c1.get(Calendar.MONTH);
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+ int month2 = c2.get(Calendar.MONTH);
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+ // 获取年的差值
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+ int yearInterval = year1 - year2;
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+ // 获取月数差值
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+ int monthInterval = month1 - month2;
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+ int monthsDiff = yearInterval * 12 + monthInterval;
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+ return Math.abs(monthsDiff);
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+ }
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+
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+ /**
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+ * 增加月份
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+ * @param date
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+ * @param amount
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+ * @return
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+ */
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+ public static Date addMonth(Date date, int amount) {
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+ Calendar calendar = Calendar.getInstance();
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+ calendar.setTime(date);
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+ calendar.add(Calendar.MONTH, amount); //把日期往后增加一个月,负数减一个月
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+ date = calendar.getTime();
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+ return date;
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+ }
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+
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+ /**
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+ * 获取年月的最后一天
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+ * @param yearMonth
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+ * @return
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+ */
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+ public static String getLastDayOfMonth(String yearMonth) {
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+ int year = Integer.parseInt(yearMonth.split("-")[0]); //年
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+ int month = Integer.parseInt(yearMonth.split("-")[1]); //月
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+ Calendar cal = Calendar.getInstance();
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+ // 设置年份
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+ cal.set(Calendar.YEAR, year);
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+ // 设置月份
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+ // cal.set(Calendar.MONTH, month - 1);
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+ cal.set(Calendar.MONTH, month); //设置当前月的上一个月
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+ // 获取某月最大天数
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+ //int lastDay = cal.getActualMaximum(Calendar.DATE);
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+ int lastDay = cal.getMinimum(Calendar.DATE); //获取月份中的最小值,即第一天
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+ // 设置日历中月份的最大天数
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+ //cal.set(Calendar.DAY_OF_MONTH, lastDay);
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+ cal.set(Calendar.DAY_OF_MONTH, lastDay - 1); //上月的第一天减去1就是当月的最后一天
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+ // 格式化日期
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+ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
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+ return sdf.format(cal.getTime());
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+ }
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+
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+
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+ //时间戳转换日期方法
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+ public static String stampToDateStr(String value) {
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+ String res;
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+ SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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+ long lt = new Long(value);
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+ Date date = new Date(lt);
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+ res = simpleDateFormat.format(date);
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+ return res;
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+ }
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+
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+ //时间戳转换日期方法
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+ public static Date stampToDate(String value) {
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+ long lt = new Long(value);
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+ return new Date(lt);
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+ }
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+
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+ public static void main(String[] args) {
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+ System.out.println(stampToDate("20231212091303"));
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+ System.out.println(parseDateToStr(YYYY_MM_DD_HH_MM_SS,stampToDate("20231212091303")));
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+ System.out.println(parseDate("20231212091303"));
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+ }
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+
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+}
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