DateUtils
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2022-05-09 19:56:33
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package com.fengzhi.web.util;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class DateUtil {
/**
*
* @Title: getMonthFirstDay
* @Description: (获取本月第一天的日期：2015-01-01)
* @author fyf
* @return
*/
public static String getMonthFirstDay() {
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
return dateFormat("yyyy-MM-dd", calendar.getTime());
}
/**
*
* @Title: getMonthFirstDay
* @Description: (获取本月第一天的日期：2015-02-01)
* @author fyf
* @param date
* @return
*/
public static String getMonthFirstDay(String date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(dateFormat("yyyy-MM-dd", date));
calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
return dateFormat("yyyy-MM-dd", calendar.getTime());
}
/**
*
* @Title: getMonthFirstDay
* @Description: (获取本月第一天的日期：2015-03-01)
* @author fyf
* @param date
* @return
*/
public static String getMonthFirstDay(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
return dateFormat("yyyy-MM-dd", calendar.getTime());
}
/**
*
* @Title: getMonthLastDay
* @Description: (获取本月的最后一天：2015-01-31)
* @author fyf
* @return
*/
public static String getMonthLastDay() {
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
return dateFormat("yyyy-MM-dd", calendar.getTime());
}
/**
*
* @Title: getMonthLastDay
* @Description: (获取本月的最后一天：2015-02-28)
* @author fyf
* @param date
* @return
*/
public static String getMonthLastDay(String date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(dateFormat("yyyy-MM-dd", date));
calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
return dateFormat("yyyy-MM-dd", calendar.getTime());
}
/**
*
* @Title: getMonthLastDay
* @Description: (获取本月的最后一天：2015-09-30)
* @author fyf
* @param date
* @return
*/
public static String getMonthLastDay(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
return dateFormat("yyyy-MM-dd", calendar.getTime());
}
/**
*
* @Title: dateFormat
* @Description: (格式化日期输出格式)
* @author fyf
* @param format
* (yyyy-MM-dd)/(yyyy-MM-dd HH:mm:ss)
* @param date
*
* @return (2015-01-01)/(2015-02-02 10:20:30)
*/
public static String dateFormat(String format, Date date) {
SimpleDateFormat sdf = new SimpleDateFormat(format);
return sdf.format(date);
}
/**
*
* @Title: dateFormat
* @Description: (格式化日期输出格式)
* @author fyf
* @param format
* @param date
* @return
*/
public static Date dateFormat(String format, String date) {
SimpleDateFormat sdf = new SimpleDateFormat(format);
try {
return sdf.parse(date);
} catch (ParseException e) {
return new Date();
}
}
/**
*
* @Title: getYear
* @Description: (获取当前日期：年)
* @author fyf
* @return
*/
public static int getYear() {
Calendar calendar = Calendar.getInstance();
return calendar.get(Calendar.YEAR);
}
/**
*
* @Title: getMonthOfYear
* @Description: (获取当前日期：月)
* @author fyf
* @return
*/
public static int getMonthOfYear() {
Calendar calendar = Calendar.getInstance();
return calendar.get(Calendar.MONTH);
}
/**
*
* @Title: getDayOfMonth
* @Description: (获取当前日期：日)
* @author fyf
* @return
*/
public static int getDayOfMonth() {
Calendar calendar = Calendar.getInstance();
return calendar.get(Calendar.DAY_OF_MONTH);
}
/**
*
* @Title: getHourOfDay
* @Description: (获取当前时间：时)
* @author fyf
* @return
*/
public static int getHourOfDay() {
Calendar calendar = Calendar.getInstance();
return calendar.get(Calendar.HOUR_OF_DAY);
}
/**
*
* @Title: getMinute
* @Description: (获取当前时间：分)
* @author fyf
* @return
*/
public static int getMinute() {
Calendar calendar = Calendar.getInstance();
return calendar.get(Calendar.MINUTE);
}
/**
*
* @Title: getSecond
* @Description: (获取当前时间：秒)
* @author fyf
* @return
*/
public static int getSecond() {
Calendar calendar = Calendar.getInstance();
return calendar.get(Calendar.SECOND);
}
/**
*
* @Title: getMilliSecond
* @Description: (获取当前时间：毫秒)
* @author fyf
* @return
*/
public static int getMilliSecond() {
Calendar calendar = Calendar.getInstance();
return calendar.get(Calendar.MILLISECOND);
}
/**
*
* @Title: getDayOfYear
* @Description: (获取当前日期属于当年的第几天)
* @author fyf
* @return
*/
public static int getDayOfYear() {
Calendar calendar = Calendar.getInstance();
return calendar.get(Calendar.DAY_OF_YEAR);
}
/**
*
* @Title: getDayOfYearFromString
* @Description: (获取该日期是当年的第几天)
* @author fyf
* @param date
* @return
*/
public static int getDayOfYearFromString(String date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(getYYYY_MM_ddFromString(date));
return calendar.get(Calendar.DAY_OF_YEAR);
}
/**
*
* @Title: getDayOfWeekFromString
* @Description: (获取该日期是星期几)
* @author fyf
* @param date
* @return
*/
public static String getDayOfWeekFromString(String date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(getYYYY_MM_ddFromString(date));
switch (calendar.get(Calendar.DAY_OF_WEEK)) {
case Calendar.SUNDAY:
return "星期日";
case Calendar.MONDAY:
return "星期一";
case Calendar.TUESDAY:
return "星期二";
case Calendar.WEDNESDAY:
return "星期三";
case Calendar.THURSDAY:
return "星期四";
case Calendar.FRIDAY:
return "星期五";
case Calendar.SATURDAY:
return "星期六";
}
return null;
}
/**
*
* @Title: getDayOfWeek
* @Description: (获取当前日期是本周星期几)
* @author fyf
* @return
*/
public static String getDayOfWeek() {
Calendar calendar = Calendar.getInstance();
switch (calendar.get(Calendar.DAY_OF_WEEK)) {
case Calendar.SUNDAY:
return "星期日";
case Calendar.MONDAY:
return "星期一";
case Calendar.TUESDAY:
return "星期二";
case Calendar.WEDNESDAY:
return "星期三";
case Calendar.THURSDAY:
return "星期四";
case Calendar.FRIDAY:
return "星期五";
case Calendar.SATURDAY:
return "星期六";
}
return null;
}
/**
*
* @Title: getWeekOfMonth
* @Description: (获取当前日期是本月的第几周)
* @author fyf
* @return
*/
public static String getWeekOfMonth() {
Calendar calendar = Calendar.getInstance();
switch (calendar.get(Calendar.WEEK_OF_MONTH)) {
case 1:
return "第一周";
case 2:
return "第二周";
case 3:
return "第三周";
case 4:
return "第四周";
case 5:
return "第五周";
}
return null;
}
/**
*
* @Title: getWeekOfMonthFromeDate
* @Description: (获取该日期是当年当月的第几周)
* @author fyf
* @param date
* @return
*/
public static String getWeekOfMonthFromeDate(String date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(getYYYY_MM_ddFromString(date));
switch (calendar.get(Calendar.WEEK_OF_MONTH)) {
case 1:
return "第一周";
case 2:
return "第二周";
case 3:
return "第三周";
case 4:
return "第四周";
case 5:
return "第五周";
}
return null;
}
/**
*
* @Title: getWeekOfYear
* @Description: (获取当前日期是当年的第几周)
* @author fyf
* @return
*/
public static String getWeekOfYear() {
Calendar calendar = Calendar.getInstance();
return "第" + (calendar.get(Calendar.WEEK_OF_YEAR)) + "周";
}
/**
*
* @Title: getWeekOfYearFromString
* @Description: (获取该日期是当年的第几周)
* @author fyf
* @param date
* @return
*/
public static String getWeekOfYearFromString(String date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(getYYYY_MM_ddFromString(date));
return "第" + (calendar.get(Calendar.WEEK_OF_YEAR)) + "周";
}
/**
*
* @Title: getYYYY_MM_dd
* @Description: (获取日期：2015-01-01)
* @author fyf
* @return
*/
public static String getYYYY_MM_dd() {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
return sdf.format(new Date());
}
/**
*
* @Title: getYYYY_MM_ddFromDate
* @Description: (转换日期格式 to String ：2015-06-16)
* @author fyf
* @param date
* @return
*/
public static String getYYYY_MM_ddFromDate(Date date) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
if (date == null)
return getYYYY_MM_dd();
return sdf.format(date);
}
/**
*
* @Title: getYYYY_MM_ddFromString
* @Description: (转换日期格式 to Date ：2015-06-16)
* @author fyf
* @param date
* @return
*/
public static Date getYYYY_MM_ddFromString(String date) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
if (date == null || "".equals(date))
date = getYYYY_MM_dd();
try {
return sdf.parse(date);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
*
* @Title: getY_m_dHms
* @Description: (获取当前日期时间：2015-06-16 14:07:06)
* @author fyf
* @return
*/
public static String getY_m_dHms() {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
return sdf.format(new Date());
}
/**
*
* @Title: getY_m_dHmsFromDate
* @Description: (转换日期时间格式 to String ：2015-06-16 14:07:06)
* @author fyf
* @param date
* @return
*/
public static String getY_m_dHmsFromDate(Date date) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
if (date == null)
return getY_m_dHms();
return sdf.format(date);
}
/**
*
* @Title: getY_m_dHmsFromString
* @Description: (转换日期时间格式 to Date ：2015-06-16 14:07:06)
* @author fyf
* @param date
* @return
*/
public static Date getY_m_dHmsFromString(String date) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
if (date == null || "".equals(date))
date = getY_m_dHms();
try {
return sdf.parse(date);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
*
* @Title: getYmdHmsSSS
* @Description: (获取当前日期时间：20150616141020101)
* @author fyf
* @return
*/
public static String getYmdHmsSSS() {
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");
return sdf.format(new Date());
}
/**
*
* @Title: getYmdHmsSSSFromDate
* @Description: (转换日期时间格式 to String ：20150616141020101)
* @author fyf
* @param date
* @return
*/
public static String getYmdHmsSSSFromDate(Date date) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");
if (date == null)
return getYmdHmsSSS();
return sdf.format(date);
}
/**
*
* @Title: getYmdHmsSSSFromString
* @Description: (转换日期时间格式 to Date：20150616141020101)
* @author fyf
* @param date
* @return
*/
public static Date getYmdHmsSSSFromString(String date) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");
if (date == null || "".equals(date))
date = getYmdHmsSSS();
try {
return sdf.parse(date);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
*
* @Title: getMondayOfWeek
* @Description: (根据日期获取当周的星期一的日期)
* @return
*/
public static String getMondayDateFromString(String date) {
// 0:表示本周； 1：表示下周；-1：表示上周
int n = 0;
Calendar cal = Calendar.getInstance();
cal.setTime(getYYYY_MM_ddFromString(date));
// 美国星期日作为每周的第一天（即：国内的本周星期天为美国的下周）
cal.add(Calendar.DAY_OF_MONTH, -1);
cal.add(Calendar.DATE, n * 7);
// 想转星期几， Calendar就引用星期几（星期三：Calendar.WEDNESDAY）
cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
return getYYYY_MM_ddFromDate(cal.getTime());
}
/**
*
* @Title: getMondayOfWeek
* @Description: (根据日期获取当周的星期一的日期)
* @return
*/
public static String getMondayDateFromDate(Date date) {
// 0:表示本周； 1：表示下周；-1：表示上周
int n = 0;
Calendar cal = Calendar.getInstance();
if (date == null)
date = new Date();
cal.setTime(date);
// 美国星期日作为每周的第一天（即：国内的本周星期天为美国的下周）
cal.add(Calendar.DAY_OF_MONTH, -1);
cal.add(Calendar.DATE, n * 7);
// 想转星期几， Calendar就引用星期几（星期三：Calendar.WEDNESDAY）
cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
return getYYYY_MM_ddFromDate(cal.getTime());
}
public static String getSundayOfWeek(String date) {
// 0:表示本周； 1：表示下周；-1：表示上周
int n = 0;
Calendar cal = Calendar.getInstance();
cal.setTime(getYYYY_MM_ddFromString(date));
// 美国星期天为一周第一天（即：国内的本周星期天为美国的下周）
cal.add(Calendar.DAY_OF_MONTH, 6);
cal.add(Calendar.DATE, n * 7);
// 想转星期几， Calendar就引用星期几（星期三：Calendar.WEDNESDAY）
cal.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
try {
date = getYYYY_MM_ddFromDate(cal.getTime());
} catch (Exception e) {
e.printStackTrace();
}
return date;
}
}
