java 日期格式化工具类

java 日期格式化工具类

• • 代码如下

代码如下

package com.dongao.project.utils;import com.ruoyi.common.utils.StringUtils; import org.apache.commons.lang3.time.DateFormatUtils;import java.lang.management.ManagementFactory; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date;/*** @Version 1.0* @Date 2019-08-19**/ public class DateUtils extends org.apache.commons.lang3.time.DateUtils {public static final String YYYY = "yyyy";public static final String YYYY_MM = "yyyy-MM";public static final String YYYY_MM_DD = "yyyy-MM-dd";public static final String YYYY_MM_DD_HH_MM = "yyyyMMddHHmm";public static final String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";public static final String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";public static final String MM_DD_HH_MM = "MM-dd HH:mm";private static String[] parsePatterns = {"yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM","yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM","yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};/*** 获取当前Date型日期** @return Date() 当前日期*/public static Date getNowDate(){return new Date();}/*** 获取当前日期, 默认格式为yyyy-MM-dd** @return String*/public static String getDate(){return dateTimeNow(YYYY_MM_DD);}public static final String getTime(){return dateTimeNow(YYYY_MM_DD_HH_MM_SS);}public static final String getMmTime(){return dateTimeNow(YYYY_MM_DD_HH_MM);}public static final String dateTimeNow(){return dateTimeNow(YYYYMMDDHHMMSS);}public static final String dateTimeNow(final String format){return parseDateToStr(format, new Date());}public static final String dateTime(final Date date){return parseDateToStr(YYYY_MM_DD, date);}public static final String parseDateToStr(final String format, final Date date){return new SimpleDateFormat(format).format(date);}public static final Date dateTime(final String format, final String ts){try{return new SimpleDateFormat(format).parse(ts);}catch (ParseException e){throw new RuntimeException(e);}}/*** 日期路径 即年/月/日 如2018/08/08*/public static final String datePath(){Date now = new Date();return DateFormatUtils.format(now, "yyyy/MM/dd");}/*** 日期路径 即年/月/日 如20180808*/public static final String dateTime(){Date now = new Date();return DateFormatUtils.format(now, "yyyyMMdd");}/*** 日期型字符串转化为日期 格式*/public static Date parseDate(Object str){if (str == null){return null;}try{return parseDate(str.toString(), parsePatterns);}catch (ParseException e){return null;}}/*** 获取服务器启动时间*/public static Date getServerStartDate(){long time = ManagementFactory.getRuntimeMXBean().getStartTime();return new Date(time);}/*** 计算两个时间差*/public static String getDatePoor(Date endDate, Date nowDate){long nd = 1000 * 24 * 60 * 60;long nh = 1000 * 60 * 60;long nm = 1000 * 60;// long ns = 1000;// 获得两个时间的毫秒时间差异long diff = endDate.getTime() - nowDate.getTime();// 计算差多少天long day = diff / nd;// 计算差多少小时long hour = diff % nd / nh;// 计算差多少分钟long min = diff % nd % nh / nm;// 计算差多少秒//输出结果// long sec = diff % nd % nh % nm / ns;return day + "天" + hour + "小时" + min + "分钟";}public static String getFormatDate(String format,Date date) {if (null != date) {if (StringUtils.isEmpty(format)) {format = YYYY_MM_DD_HH_MM_SS;}String dateStr = parseDateToStr(format, date);return dateStr;}return "";}/*** 秒转小时分* @param second* @return*/public static String getFormatTime(Long second) {if (second != null) {if(second < 3600) {//分return NumFormat(second / 60) + "分";}if(second< 3600 * 24) {//时return NumFormat(second/ 60 / 60) + "小时" + NumFormat(second/ 60 % 60) + "分";}if(second>= 3600 * 24) {//天return NumFormat(second/ 60 / 60 /24) + "天" +NumFormat(second/ 60 / 60 % 24) + "小时" + NumFormat(second/ 60 % 60) + "分";}}return "--";}/*** 格式化时间* @param sec* @return*/private static String NumFormat(long sec) {if (String.valueOf(sec).length() < 2){return "0"+sec;}else {return String.valueOf(sec);}}/*** 获取当前时间前面某天或者后面某天* @param date* @return*/public static Date getOtherDay(Date date, int amount) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.DAY_OF_MONTH,amount);Date time = calendar.getTime();return time;}/*** 获取当前时间月日 7.13* @param date* @return*/public static String getMonthDay(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);//month从0开始int month = calendar.get(Calendar.MONTH) + 1;int day = calendar.get(Calendar.DAY_OF_MONTH);return month+"."+day;}/*** 获取周几* @param date* @return*/public static String getWeek(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);int weekday = calendar.get(Calendar.DAY_OF_WEEK);String week = null;if (weekday == 1) {week = "周日";} else if (weekday == 2) {week = "周一";} else if (weekday == 3) {week = "周二";} else if (weekday == 4) {week = "周三";} else if (weekday == 5) {week = "周四";} else if (weekday == 6) {week = "周五";} else if (weekday == 7) {week = "周六";}return week;}/*** 根据日期字符串获取时间* @param str* @return*/public static Date getDate(String str) {SimpleDateFormat sdf = new SimpleDateFormat(YYYY_MM_DD);Date parse = null;try {parse = sdf.parse(str);} catch (ParseException e) {e.printStackTrace();}return parse;}/*** 根据日期字符串获取时间* @param format* @param str* @return*/public static Date getDate(String format,String str) {if (StringUtils.isEmpty(format)) {format = YYYY_MM_DD_HH_MM_SS;}SimpleDateFormat sdf = new SimpleDateFormat(format);Date parse = null;try {parse = sdf.parse(str);} catch (ParseException e) {e.printStackTrace();}return parse;}/*** 格式化日期* @param format* @param date* @return*/public static Date getChangeDate(String format,Date date) {if (null != date) {if (StringUtils.isEmpty(format)) {format = YYYY_MM_DD_HH_MM_SS;}String dateStr = parseDateToStr(format, date);Date resDate = getDate(format, dateStr);return resDate;}return null;}/*** 计算两个日期相差几天，不计算结束日期当天* @param start 开始时间* @param end 结束时间* @return*/public static long getDiffDays(Date start,Date end) {long dayNum = 0;if (start != null && end != null) {//格式化时间Date startdate = getChangeDate(YYYY_MM_DD,start);Date enddate = getChangeDate(YYYY_MM_DD,end);//获取时间差long subtract = enddate.getTime() - startdate.getTime();//转换为天数dayNum = subtract / 1000 / 60 / 60 / 24;}return dayNum;}/*** 判断是不是本周* @param date* @return*/public static boolean isThisWeek(Date date) {Calendar calendar = Calendar.getInstance();int currentWeek = calendar.get(Calendar.WEEK_OF_YEAR);calendar.setTime(date);int dateWeek = calendar.get(Calendar.WEEK_OF_YEAR);if (currentWeek == dateWeek) {return true;}return false;}/*** 判断是否是当天* @param date* @return*/public static boolean isThisDay (Date date) {return isThisTime(date,YYYY_MM_DD);}/*** 判断是否是本月* @param date* @return*/public static boolean isThisMonth (Date date) {return isThisTime(date,YYYY_MM);}/*** 判断当前时间* @param date* @param format* @return*/private static boolean isThisTime(Date date, String format) {SimpleDateFormat sdf = new SimpleDateFormat(format);String dateFormat = sdf.format(date);String nowFormat = sdf.format(new Date());if (dateFormat.equals(nowFormat)) {return true;}return false;}}

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