springboot+mybatis+redis+thymeleaf学习整合web项目demo源码

package com.xh.util; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; import java.util.List; /** * 日期工具类 * */ public class DateUtil { // 默认日期格式 public static final String DATE_DEFAULT_FORMAT = "yyyy-MM-dd"; // 默认时间格式 public static final String DATETIME_DEFAULT_FORMAT = "yyyy-MM-dd HH:mm:ss"; public static final String TIME_DEFAULT_FORMAT = "HH:mm:ss"; // 日期格式化 private static DateFormat dateFormat = null; // 时间格式化 private static DateFormat dateTimeFormat = null; private static DateFormat timeFormat = null; private static Calendar gregorianCalendar = null; static { dateFormat = new SimpleDateFormat(DATE_DEFAULT_FORMAT); dateTimeFormat = new SimpleDateFormat(DATETIME_DEFAULT_FORMAT); timeFormat = new SimpleDateFormat(TIME_DEFAULT_FORMAT); gregorianCalendar = new GregorianCalendar(); } /** * 日期格式化yyyy-MM-dd * * @param date * @return */ public static Date formatDate(String date, String format) { try { return new SimpleDateFormat(format).parse(date); } catch (ParseException e) { e.printStackTrace(); } return null; } /** * 日期格式化yyyy-MM-dd * * @param date * @return */ public static String getDateFormat(Date date) { return dateFormat.format(date); } /** * 日期格式化yyyy-MM-dd HH:mm:ss * * @param date * @return */ public static String getDateTimeFormat(Date date) { return dateTimeFormat.format(date); } /** * 时间格式化 * * @param date * @return HH:mm:ss */ public static String getTimeFormat(Date date) { return timeFormat.format(date); } /** * 日期格式化 * * @param date * @return */ public static Date getDateFormat(String date) { try { return dateFormat.parse(date); } catch (ParseException e) { e.printStackTrace(); } return null; } /** * 时间格式化 * * @param date * @return */ public static Date getDateTimeFormat(String date) { try { return dateTimeFormat.parse(date); } catch (ParseException e) { e.printStackTrace(); } return null; } /** * 获取当前日期(yyyy-MM-dd) * * @param date * @return */ public static Date getNowDate() { return DateUtil.getDateFormat(dateFormat.format(new Date())); } /** * 获取当前日期星期一日期 * * @return date */ public static Date getFirstDayOfWeek() { gregorianCalendar.setFirstDayOfWeek(Calendar.MONDAY); gregorianCalendar.setTime(new Date()); gregorianCalendar.set(Calendar.DAY_OF_WEEK, gregorianCalendar.getFirstDayOfWeek()); // Monday return gregorianCalendar.getTime(); } /** * 获取当前日期星期日日期 * * @return date */ public static Date getLastDayOfWeek() { gregorianCalendar.setFirstDayOfWeek(Calendar.MONDAY); gregorianCalendar.setTime(new Date()); gregorianCalendar.set(Calendar.DAY_OF_WEEK, gregorianCalendar.getFirstDayOfWeek() + 6); // Monday return gregorianCalendar.getTime(); } /** * 获取日期星期一日期 * * @param 指定日期 * @return date */ public static Date getFirstDayOfWeek(Date date) { if (date == null) { return null; } gregorianCalendar.setFirstDayOfWeek(Calendar.MONDAY); gregorianCalendar.setTime(date); gregorianCalendar.set(Calendar.DAY_OF_WEEK, gregorianCalendar.getFirstDayOfWeek()); // Monday return gregorianCalendar.getTime(); } /** * 获取日期星期一日期 * * @param 指定日期 * @return date */ public static Date getLastDayOfWeek(Date date) { if (date == null) { return null; } gregorianCalendar.setFirstDayOfWeek(Calendar.MONDAY); gregorianCalendar.setTime(date); gregorianCalendar.set(Calendar.DAY_OF_WEEK, gregorianCalendar.getFirstDayOfWeek() + 6); // Monday return gregorianCalendar.getTime(); } /** * 获取当前月的第一天 * * @return date */ public static Date getFirstDayOfMonth() { gregorianCalendar.setTime(new Date()); gregorianCalendar.set(Calendar.DAY_OF_MONTH, 1); return gregorianCalendar.getTime(); } /** * 获取当前月的最后一天 * * @return */ public static Date getLastDayOfMonth() { gregorianCalendar.setTime(new Date()); gregorianCalendar.set(Calendar.DAY_OF_MONTH, 1); gregorianCalendar.add(Calendar.MONTH, 1); gregorianCalendar.add(Calendar.DAY_OF_MONTH, -1); return gregorianCalendar.getTime(); } /** * 获取指定月的第一天 * * @param date * @return */ public static Date getFirstDayOfMonth(Date date) { gregorianCalendar.setTime(date); gregorianCalendar.set(Calendar.DAY_OF_MONTH, 1); return gregorianCalendar.getTime(); } /** * 获取指定月的最后一天 * * @param date * @return */ public static Date getLastDayOfMonth(Date date) { gregorianCalendar.setTime(date); gregorianCalendar.set(Calendar.DAY_OF_MONTH, 1); gregorianCalendar.add(Calendar.MONTH, 1); gregorianCalendar.add(Calendar.DAY_OF_MONTH, -1); return gregorianCalendar.getTime(); } /** * 获取日期前一天 * * @param date * @return */ public static Date getDayBefore(Date date) { gregorianCalendar.setTime(date); int day = gregorianCalendar.get(Calendar.DATE); gregorianCalendar.set(Calendar.DATE, day - 1); return gregorianCalendar.getTime(); } /** * 获取日期后一天 * * @param date * @return */ public static Date getDayAfter(Date date) { gregorianCalendar.setTime(date); int day = gregorianCalendar.get(Calendar.DATE); gregorianCalendar.set(Calendar.DATE, day + 1); return gregorianCalendar.getTime(); } /** * 获取当前年 * * @return */ public static int getNowYear() { Calendar d = Calendar.getInstance(); return d.get(Calendar.YEAR); } /** * 获取当前月份 * * @return */ public static int getNowMonth() { Calendar d = Calendar.getInstance(); return d.get(Calendar.MONTH) + 1; } /** * 获取当月天数 * * @return */ public static int getNowMonthDay() { Calendar d = Calendar.getInstance(); return d.getActualMaximum(Calendar.DATE); } /** * 获取时间段的每一天 * * @param 开始日期 * @param 结算日期 * @return 日期列表 */ public static List<Date> getEveryDay(Date startDate, Date endDate) { if (startDate == null || endDate == null) { return null; } // 格式化日期(yy-MM-dd) startDate = DateUtil.getDateFormat(DateUtil.getDateFormat(startDate)); endDate = DateUtil.getDateFormat(DateUtil.getDateFormat(endDate)); List<Date> dates = new ArrayList<Date>(); gregorianCalendar.setTime(startDate); dates.add(gregorianCalendar.getTime()); while (gregorianCalendar.getTime().compareTo(endDate) < 0) { // 加1天 gregorianCalendar.add(Calendar.DAY_OF_MONTH, 1); dates.add(gregorianCalendar.getTime()); } return dates; } /** * 获取提前多少个月 * * @param monty * @return */ public static Date getFirstMonth(int monty) { Calendar c = Calendar.getInstance(); c.add(Calendar.MONTH, -monty); return c.getTime(); } }