Date 工具类（包含常用的一些时间方法）
2024-08-24 15:04:56
package com.fh.util; import java.sql.Timestamp;
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; /**
* 日期处理工具函数包,包括日期对象、日期字符串相关转换函数
*
* @version 1.0 <br>
*/
public class DateUtils { private final static SimpleDateFormat sdfYear = new SimpleDateFormat("yyyy"); private final static SimpleDateFormat sdfDay = new SimpleDateFormat(
"yyyy-MM-dd"); private final static SimpleDateFormat sdfDays = new SimpleDateFormat(
"yyyyMMdd"); private final static SimpleDateFormat sdfTime = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss"); /**
* 获取YYYY格式
*
* @return
*/
public static String getYear() {
return sdfYear.format(new Date());
} /**
* 获取YYYY-MM-DD格式
*
* @return
*/
public static String getDay() {
return sdfDay.format(new Date());
} /**
* 获取YYYYMMDD格式
*
* @return
*/
public static String getDays() {
return sdfDays.format(new Date());
} /**
* 获取YYYY-MM-DD HH:mm:ss格式
*
* @return
*/
public static String getTime() {
return sdfTime.format(new Date());
} /**
* @Title: compareDate
* @Description: TODO(日期比较，如果s>=e 返回true 否则返回false)
* @param s
* @param e
* @return boolean
* @throws
* @author luguosui
*/
public static boolean compareDate(String s, String e) {
if (fomatDate(s) == null || fomatDate(e) == null) {
return false;
}
return fomatDate(s).getTime() >= fomatDate(e).getTime();
} /**
* 格式化日期
*
* @return
*/
public static Date fomatDate(String date) {
DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
try {
return fmt.parse(date);
} catch (ParseException e) {
e.printStackTrace();
return null;
}
} /**
* 校验日期是否合法
*
* @return
*/
public static boolean isValidDate(String s) {
DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
try {
fmt.parse(s);
return true;
} catch (Exception e) {
// 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
return false;
}
} /**
*
* @Description 获得时间年差
* @param startTime
* @param endTime
* @return
*/
public static int getDiffYear(String startTime, String endTime) {
DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
try {
int years = (int) (((fmt.parse(endTime).getTime() - fmt.parse(
startTime).getTime()) / (1000 * 60 * 60 * 24)) / 365);
return years;
} catch (Exception e) {
// 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
return 0;
}
}
/**
*
* @Description 获得时间分钟差
* @param startTime
* @param endTime
* @return
*/
public static int getDiffMinute(String startTime, String endTime) {
DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
try {
int minute = (int) ((fmt.parse(endTime).getTime() - fmt.parse(
startTime).getTime()) / 1000);
return minute;
} catch (Exception e) {
// 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
return 0;
}
} /**
* <li>功能描述：时间相减得到天数
*
* @param beginDateStr
* @param endDateStr
* @return long
* @author Administrator
*/
public static long getDaySub(String beginDateStr, String endDateStr) {
long day = 0;
java.text.SimpleDateFormat format = new java.text.SimpleDateFormat(
"yyyy-MM-dd");
java.util.Date beginDate = null;
java.util.Date endDate = null; try {
beginDate = format.parse(beginDateStr);
endDate = format.parse(endDateStr);
} catch (ParseException e) {
e.printStackTrace();
}
day = (endDate.getTime() - beginDate.getTime()) / (24 * 60 * 60 * 1000);
// System.out.println("相隔的天数="+day); return day;
} /**
* 得到n天之后的日期
*
* @param days
* @return
*/
public static String getAfterDayDate(String days) {
int daysInt = Integer.parseInt(days); Calendar canlendar = Calendar.getInstance(); // java.util包
canlendar.add(Calendar.DATE, daysInt); // 日期减 如果不够减会将月变动
Date date = canlendar.getTime(); SimpleDateFormat sdfd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dateStr = sdfd.format(date); return dateStr;
} /**
* 得到n天之后是周几
*
* @param days
* @return
*/
public static String getAfterDayWeek(String days) {
int daysInt = Integer.parseInt(days); Calendar canlendar = Calendar.getInstance(); // java.util包
canlendar.add(Calendar.DATE, daysInt); // 日期减 如果不够减会将月变动
Date date = canlendar.getTime(); SimpleDateFormat sdf = new SimpleDateFormat("E");
String dateStr = sdf.format(date); return dateStr;
} /**
* 定义常见的时间格式
*/
private static String[] dateFormat = { "yyyy-MM-dd HH:mm:ss",
"yyyy/MM/dd HH:mm:ss", "yyyy年MM月dd日HH时mm分ss秒", "yyyy-MM-dd",
"yyyy/MM/dd", "yy-MM-dd", "yy/MM/dd", "yyyy年MM月dd日", "HH:mm:ss",
"yyyyMMddHHmmss", "yyyyMMdd", "yyyy.MM.dd", "yy.MM.dd",
"MM月dd日HH时mm分", "yyyy年MM月dd日 HH:mm:ss", "yyyy-MM-dd HH:mm" }; /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
* <b>日期：</b>2011-9-8
* </p>
* <p>
* <b>方法描述：</b> 将日期格式从 java.util.Calendar 转到 java.sql.Timestamp 格式
* </p>
*
* @param date
* 格式表示的日期
* @return <p>
* <b>使用说明：</b>
* </p>
*/
public static Timestamp convUtilCalendarToSqlTimestamp(Calendar date) {
if (date == null)
return null;
else
return new Timestamp(date.getTimeInMillis());
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
* <b>日期：</b>2011-9-8
* </p>
* <p>
* <b>方法描述：</b> 将日期格式从 java.util.Timestamp 转到 java.util.Calendar 格式
* </p>
*
* @param date
* 格式表示的日期
* @return <p>
* <b>使用说明：</b>
* </p>
*/
public static Calendar convSqlTimestampToUtilCalendar(Timestamp date) {
if (date == null)
return null;
else {
java.util.GregorianCalendar gc = new java.util.GregorianCalendar();
gc.setTimeInMillis(date.getTime());
return gc;
}
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
* <b>日期：</b>2011-9-8
* </p>
* <p>
* <b>方法描述：</b> 解析一个字符串，形成一个Calendar对象，适应各种不同的日期表示法
* </p>
*
* @param dateStr
* 期望解析的字符串，注意，不能传null进去，否则出错
* @return <p>
* <b>使用说明：</b> <br>
* <br>
* 可输入的日期字串格式如下： <br>
* "yyyy-MM-dd HH:mm:ss", <br>
* "yyyy/MM/dd HH:mm:ss", <br>
* "yyyy年MM月dd日HH时mm分ss秒", <br>
* "yyyy-MM-dd", <br>
* "yyyy/MM/dd", <br>
* "yy-MM-dd", <br>
* "yy/MM/dd", <br>
* "yyyy年MM月dd日", <br>
* "HH:mm:ss", <br>
* "yyyyMMddHHmmss", <br>
* "yyyyMMdd", <br>
* "yyyy.MM.dd", <br>
* "yy.MM.dd"
* </p>
*/
public static Calendar parseDate(String dateStr) {
if (dateStr == null || dateStr.trim().length() == 0)
return null; Date result = parseDate(dateStr, 0); Calendar cal = Calendar.getInstance();
cal.setTime(result); return cal;
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
* <b>日期：</b>2011-9-8
* </p>
* <p>
* <b>方法描述：</b> 将一个日期转成日期时间格式，格式这样 2002-08-05 21:25:21
* </p>
*
* @param date
* 期望格式化的日期对象
* @return 返回格式化后的字符串
* <p>
* <b>使用说明：</b> <br>
* Calendar date = new GregorianCalendar(); <br>
* String ret = DateUtils.toDateTimeStr(date); <br>
* 返回： <br>
* ret = "2002-12-04 09:13:16";
* </p>
*/
public static String toDateTimeStr(Calendar date) {
if (date == null)
return null;
return new SimpleDateFormat(dateFormat[0]).format(date.getTime());
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
* <b>日期：</b>2011-9-8
* </p>
* <p>
* <b>方法描述：</b> 将一个日期转成日期时间格式
* </p>
*
* @param format
* 日志格式序号
* @param date
* 期望格式化的日期对象
* @return <p>
* <b>使用说明：</b>
* </p>
*/
public static String toDateTimeStr(int format, Calendar date) {
if (date == null)
return null; return new SimpleDateFormat(dateFormat[format]).format(date.getTime());
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
* <b>日期：</b>2011-9-8
* </p>
* <p>
* <b>方法描述：</b> 将一个日期转成日期格式， 格式：yyyy-MM-dd
* </p>
*
* @param date
* 期望格式化的日期对象
* @return 返回格式化后的字符串
* <p>
* <b>使用说明：</b>
* </p>
*/
public static String toDateStr(Calendar date) {
if (date == null)
return null;
return new SimpleDateFormat(dateFormat[3]).format(date.getTime());
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
* <b>日期：</b>2011-9-8
* </p>
* <p>
* <b>方法描述：</b> 根据format数组的序号，将Calendar转换为对应格式的String
* </p>
*
* @param date
* 要转换的日期对象
* @param formatIndex
* format数组中的索引
* @return 返回格式化后的字符串
* <p>
* <b>使用说明：</b>
* </p>
*/
public static String toDateStrByFormatIndex(Calendar date, int formatIndex) {
if (date == null)
return null;
return new SimpleDateFormat(dateFormat[formatIndex]).format(date
.getTime());
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
* <b>日期：</b>2011-9-8
* </p>
* <p>
* <b>方法描述：</b> 第一个日期与第二个日期相差的天数
* </p>
*
* @param d1
* 第一个日期
* @param d2
* 第二个日期
* @return 两个日期之间相差的天数
* <p>
* <b>使用说明：</b>
* </p>
*/
public static int calendarMinus(Calendar d1, Calendar d2) {
if (d1 == null || d2 == null) {
return 0;
} d1.set(Calendar.HOUR_OF_DAY, 0);
d1.set(Calendar.MINUTE, 0);
d1.set(Calendar.SECOND, 0); d2.set(Calendar.HOUR_OF_DAY, 0);
d2.set(Calendar.MINUTE, 0);
d2.set(Calendar.SECOND, 0); long t1 = d1.getTimeInMillis();
long t2 = d2.getTimeInMillis();
long daylong = 3600 * 24 * 1000;
t1 = t1 - t1 % (daylong);
t2 = t2 - t2 % (daylong); long t = t1 - t2;
int value = (int) (t / (daylong));
return value;
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
* <b>日期：</b>2011-9-8
* </p>
* <p>
* <b>方法描述：</b> 第一个日期与第二个日期相差的天数
* </p>
*
* @param d1
* 第一个日期
* @param d2
* 第二个日期
* @return 两个日期之间相差的天数
* <p>
* <b>使用说明：</b>
* </p>
*/
public static long calendarminus(Calendar d1, Calendar d2) {
if (d1 == null || d2 == null) {
return 0;
}
return (d1.getTimeInMillis() - d2.getTimeInMillis()) / (3600 * 24000);
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
* <b>日期：</b>2011-9-8 10:00:00
* </p>
* <p>
* <b>方法描述：</b> 第一个日期与第二个日期相差的秒数
* </p>
*
* @param d1
* 第一个日期
* @param d2
* 第二个日期
* @return 两个日期之间相差的秒数
* <p>
* <b>使用说明：</b>
* </p>
*/
public static long calendarTime(Calendar d1, Calendar d2) {
if (d1 == null || d2 == null) {
return 0;
}
return (d1.getTimeInMillis() - d2.getTimeInMillis()) / 1000;
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
*
* </p>
* <p>
* <b>方法描述：</b> 内部方法，根据某个索引中的日期格式解析日期
* </p>
*
* @param dateStr
* 日期的字符串形式
* @param index
* 日期格式索引
* @return 符合日期字符串的日期对象
* <p>
* <b>使用说明：</b>
* </p>
*/
public static Date parseDate(String dateStr, int index) {
DateFormat df = null;
try {
df = new SimpleDateFormat(dateFormat[index]);
return df.parse(dateStr);
} catch (Exception aioe) {
return null;
}
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
*
* </p>
* <p>
* <b>方法描述：</b> 字符转日期,字符串格式："yyyy-MM-dd"，例如2006-01-01
* </p>
*
* @param dateStr
* 日期的字符串形式
* @return 符合日期字符串的日期对象
* <p>
* <b>使用说明：</b>
* </p>
*/
public static Date StringToDate(String dateStr) {
if (dateStr == null || dateStr.trim().length() == 0) {
return null;
}
return parseDate(dateStr, 3);
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
*
* </p>
* <p>
* <b>方法描述：</b> 将日期转换为格式化后的日期字符串
* </p>
*
* @param date
* 日期
* @param index
* 日期格式索引
* @return <p>
* <b>使用说明：</b>
* </p>
*/
public static String dateToString(Date date, int index) {
if (date == null) {
return null;
}
return new SimpleDateFormat(dateFormat[index]).format(date);
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
*
* </p>
* <p>
* <b>方法描述：</b> 返回固定格式的日期字符串。转换结果格式为："yyyy-MM-dd"
* </p>
*
* @param date
* 待转换的日期对象
* @return <p>
* <b>使用说明：</b>
* </p>
*/
public static String dateToString(Date date) {
if (date == null) {
return null;
}
return new SimpleDateFormat(dateFormat[3]).format(date);
} /**
* @Title: getStartDate
* @Description: 获取当前日期，"yyyy-MM-dd 05:00:00"
* @param @return 设定文件
* @return String 返回类型
* @throws
*/
public static String getStartDate() {
String startTime = new SimpleDateFormat(dateFormat[3])
.format(new Date());
startTime = startTime + " 05:00:00";
return startTime;
} /**
* @Title: getDate
* @Description: 获取当前日期，"yyyy-MM-dd"
* @param @return 设定文件
* @return String 返回类型
* @throws
*/
public static String getDate() { return new SimpleDateFormat(dateFormat[3]).format(new Date());
} /**
* @Title: getDateTime
* @Description: 获取当前日期，"yyyy-MM-dd HH:mm:ss:SSS"
* @param @return 设定文件
* @return String 返回类型
* @throws
*/
public static String getDateTime() { return new SimpleDateFormat(dateFormat[0]).format(new Date());
} public static String getDateTimeHHMM(String datetime) throws ParseException {
return new SimpleDateFormat(dateFormat[15])
.format(new SimpleDateFormat(dateFormat[15]).parse(datetime));
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
*
* </p>
* <p>
* <b>方法描述：</b> 将日期格式从 java.util.Date 转到 java.sql.Timestamp 格式
* </p>
*
* @param date
* @return <p>
* <b>使用说明：</b>
* </p>
*/
public static Timestamp convUtilDateToSqlTimestamp(Date date) {
if (date == null)
return null;
else
return new Timestamp(date.getTime());
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
*
* </p>
* <p>
* <b>方法描述：</b> 将Date对象转换成Calendar对象
* </p>
*
* @param date
* @return <p>
* <b>使用说明：</b>
* </p>
*/
public static Calendar convUtilDateToUtilCalendar(Date date) {
if (date == null)
return null;
else {
java.util.GregorianCalendar gc = new java.util.GregorianCalendar();
gc.setTimeInMillis(date.getTime());
return gc;
}
} /**
* <p>
* <b>作者：</b>zy
* </p>
* <p>
*
* </p>
* <p>
* <b>方法描述：</b> 根据某个索引中的日期格式解析日期
* </p>
*
* @param dateStr
* 日期
* @param index
* 日期格式的索引
* @return <p>
* <b>使用说明：</b>
* </p>
*/
public static Timestamp parseTimestamp(String dateStr, int index) {
DateFormat df = null;
try {
df = new SimpleDateFormat(dateFormat[index]);
return new Timestamp(df.parse(dateStr).getTime());
} catch (ParseException pe) {
return new Timestamp(parseDate(dateStr, index + 1).getTime());
} catch (ArrayIndexOutOfBoundsException aioe) {
return null;
}
} /**
* <p>
* <b>作者：</b>zy
* </p>
* </p>
* <p>
* <b>方法描述：</b> 返回固定格式的日期字符串。转换结果格式为："yyyy-MM-dd"
* </p>
*
* @param date
* 待转换的日期对象
* @return <p>
* <b>使用说明：</b>
* </p>
*/
public static Timestamp parseTimestamp(String dateStr) {
DateFormat df = null;
try {
df = new SimpleDateFormat(dateFormat[3]);
return new Timestamp(df.parse(dateStr).getTime());
} catch (ParseException pe) {
return null;
} catch (ArrayIndexOutOfBoundsException aioe) {
return null;
}
} /**
* @Title: calculateCalendarByday
* @Description: 日期加减天数
* @param calendar
* @param days
* @return Calendar 返回类型
*/
public static Calendar calculateCalendarByday(Calendar calendar, int days) {
calendar.add(Calendar.DAY_OF_MONTH, days);
return calendar;
} /**
* 获取倒计时
*
* @param countdownTime
* 倒计时的时间，格式：yyyy-MM-dd HH:mm:ss
* @return String 为null时转换失败 倒计时够天数显示天数，不够显示小时，不够小时显示分钟
* 2天后面没有1天，而是24小时，2小时同理
*/
public static String getCountdownTime(String countdownTime) {
try {
Calendar c = Calendar.getInstance();
c.setTime(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
.parse(countdownTime));// 将字符串转换为可获取毫秒数的日期类型
long nowDate = System.currentTimeMillis();
long countdown = (c.getTimeInMillis() - nowDate) / (1000 * 60);// 获取倒计时（分钟）
long days = countdown / (60 * 24);// 天
long hours = countdown / 60 % 24;// 小时
long mins = countdown % 60;// 分钟
if (days > 0) {
return (days + 1) + "天";
}
if (hours > 0) {
return (hours + 1) + "小时";
}
if (mins > 0) {
return mins + "分钟";
}
return "0分钟";
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
} /**
* 获取时间节点是在当前时间节点多长时间以前
*
* @param oldTime
* 之前的时间，格式：yyyy-MM-dd HH:mm:ss
* @return String 为null时转换失败 倒计时够天数显示天数，不够显示小时，不够小时显示分钟
*/
public static String getDiffTimeLessNow(String oldTime) {
try {
Calendar c = Calendar.getInstance();
c.setTime(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
.parse(oldTime));// 将字符串转换为可获取毫秒数的日期类型
long nowDate = System.currentTimeMillis();
long countdown = (nowDate - c.getTimeInMillis()) / (1000 * 60);// 获取倒计时（分钟）
long days = countdown / (60 * 24);// 天
long hours = countdown / 60 % 24;// 小时
long mins = countdown % 60;// 分钟
if (days > 0) {
return days + "天";
}
if (hours > 0) {
return hours + "小时";
}
if (mins > 0) {
return mins + "分钟";
}
return "0分钟";
} catch (ParseException e) {
e.printStackTrace();
}
return null;
} /**
* 是否已经过时
*
* @param time
* 判断过时的时间对象，格式：yyyy-MM-dd HH:mm:ss
* @return boolean 为null时判断失败 true表示改时间是当前时间节点之前的时间，false表示改时间是当前时间节点之后的时间
*/
public static boolean isOldTime(String time) {
try {
Calendar c = Calendar.getInstance();
c.setTime(new SimpleDateFormat("yyyy-MM-dd HH:mm").parse(time));// 将字符串转换为可获取毫秒数的日期类型
long nowDate = System.currentTimeMillis();
long dateDiff = (c.getTimeInMillis() - nowDate);// 获取时间差
if (dateDiff < 0) {
return true;
} else {
return false;
}
} catch (ParseException e) {
e.printStackTrace();
}
return false;
} /**
* @Description: 获得两个日期之间的所有日期
* @author zy
* @date 2015-9-21 下午03:32:21
* @param startDate
* 2015-09-21
* @param endDate
* 2015-11-13
* @return List<String> String日期格式"yyyy-MM-dd"的集合
*/
public static List<String> getDates(String startDate, String endDate) {
List<String> result = new ArrayList<String>();
if (startDate.equals(endDate)) {
return result;
}
Calendar startDay = Calendar.getInstance();
Calendar endDay = Calendar.getInstance();
startDay.setTime(DateUtils.parseDate(startDate, 3));
endDay.setTime(DateUtils.parseDate(endDate, 3));
Calendar temp = (Calendar) startDay.clone();
temp.add(Calendar.DAY_OF_YEAR, 1);
result.add(startDate.substring(0, 10));
while (temp.before(endDay)) {
result.add(DateUtils.dateToString(temp.getTime()));
temp.add(Calendar.DAY_OF_YEAR, 1);
}
result.add(endDate.substring(0, 10));
return result;
} /**
* @Description: 获得两个月之间的所有月
* @author zy
* @date 2015-9-22 上午10:28:02
* @param minDate
* 2015-01
* @param maxDate
* 2016-07
* @return List<String>
* @throws ParseException
*/
public static List<String> getMonthBetween(String minDate, String maxDate)
throws ParseException {
ArrayList<String> result = new ArrayList<String>();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");// 格式化为年月 Calendar min = Calendar.getInstance();
Calendar max = Calendar.getInstance(); min.setTime(sdf.parse(minDate));
min.set(min.get(Calendar.YEAR), min.get(Calendar.MONTH), 1); max.setTime(sdf.parse(maxDate));
max.set(max.get(Calendar.YEAR), max.get(Calendar.MONTH), 2); Calendar curr = min;
while (curr.before(max)) {
result.add(sdf.format(curr.getTime()));
curr.add(Calendar.MONTH, 1);
} return result;
} /**
* @Description: 获取某年某月最后一天
* @author zy
* @date 2015-9-22 下午02:10:25
* @param date
* 2015-02
* @return
*/
public static String getLastDayOfMonth(String date) {
int year = Integer.parseInt(date.split("-")[0]);
int month = Integer.parseInt(date.split("-")[1]);
Calendar cal = Calendar.getInstance();
// 设置年份
cal.set(Calendar.YEAR, year);
// 设置月份
cal.set(Calendar.MONTH, month - 1);
// 获取某月最大天数
int lastDay = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
// 设置日历中月份的最大天数
cal.set(Calendar.DAY_OF_MONTH, lastDay);
// 格式化日期
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String lastDayOfMonth = sdf.format(cal.getTime()); return lastDayOfMonth;
} /**
* @Description: 获取某年某月第一天
* @author zy
* @date 2015-9-22 下午02:11:56
* @return
*/
public static String getFirstDayOfMonth(String date) {
int year = Integer.parseInt(date.split("-")[0]);
int month = Integer.parseInt(date.split("-")[1]);
Calendar cal = Calendar.getInstance();
// 设置年份
cal.set(Calendar.YEAR, year);
// 设置月份
cal.set(Calendar.MONTH, month - 1);
// 获取某月最小天数
int lastDay = cal.getActualMinimum(Calendar.DAY_OF_MONTH);
// 设置日历中月份的最大天数
cal.set(Calendar.DAY_OF_MONTH, lastDay);
// 格式化日期
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String lastDayOfMonth = sdf.format(cal.getTime());
return lastDayOfMonth;
} /**
* 得到年月日时分秒
*/
public static String getNowtime() {
Calendar calendar = new GregorianCalendar();
return calendar.get(Calendar.YEAR) + ""
+ (calendar.get(Calendar.MONTH) + 1) + ""
+ calendar.get(Calendar.DAY_OF_MONTH) + ""
+ calendar.get(Calendar.HOUR_OF_DAY) + ""
+ calendar.get(Calendar.MINUTE) + ""
+ calendar.get(Calendar.SECOND) + ""
+ calendar.get(Calendar.MILLISECOND);
} /**
* 获得昨天5点
*
* @return
* @throws ParseException
*/
public static String getYesterdayFive() throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd 05:00:00");
Calendar calendar = Calendar.getInstance();
calendar.setTime(new Date());
calendar.add(Calendar.DATE, -1);
return sdf.format(calendar.getTime());
} /**
* 获得今天5点
*
* @return
* @throws ParseException
*/
public static String getDateFive() throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd 05:00:00");
Calendar calendar = Calendar.getInstance();
calendar.setTime(new Date());
return sdf.format(calendar.getTime());
} /**
* 获得明天天5点
*
* @return
* @throws ParseException
*/
public static String getTomorrowFive() throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd 05:00:00");
Calendar calendar = Calendar.getInstance();
calendar.setTime(new Date());
calendar.add(Calendar.DATE, 1);
return sdf.format(calendar.getTime());
} /**
* 获得上周起始时间
*
* @return
* @throws ParseException
*/
public static String getLastWeekStartTime() throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd 05:00:00");
Calendar calendar = Calendar.getInstance();
int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK) - 1;
int offset = 1 - dayOfWeek;
calendar.add(Calendar.DATE, offset - 7);
return sdf.format(calendar.getTime());
} /**
* 获得上周结束时间
*
* @return
* @throws ParseException
*/
public static String getLastWeekEndTime() throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd 05:00:00");
Calendar calendar = Calendar.getInstance();
int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK) - 1;
int offset = 7 - dayOfWeek;
calendar.add(Calendar.DATE, offset - 7);
return sdf.format(calendar.getTime());
} /**
* 获得当周起始时间
*
* @return
* @throws ParseException
*/
public static String getStartWeek(String dateStr) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = sdf.parse(dateStr);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.DAY_OF_WEEK,
calendar.getActualMinimum(Calendar.DAY_OF_WEEK));
return sdf.format(calendar.getTime());
} /**
* 获得当周结束时间
*
* @return
* @throws ParseException
*/
public static String getEndWeek(String dateStr) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = sdf.parse(dateStr);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.set(Calendar.HOUR_OF_DAY, 23);
calendar.set(Calendar.SECOND, 59);
calendar.set(Calendar.MINUTE, 59);
calendar.set(Calendar.DAY_OF_WEEK,
calendar.getActualMaximum(calendar.DAY_OF_WEEK));
return sdf.format(calendar.getTime());
} /**
* 获得当月起始时间
*
* @return
* @throws ParseException
*/
public static String getStartMounth(String dateStr) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = sdf.parse(dateStr);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.DAY_OF_MONTH,
calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
return sdf.format(calendar.getTime());
} /**
* 获得当月结束时间
*
* @return
* @throws ParseException
*/
public static String getEndMounth(String dateStr) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = sdf.parse(dateStr);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.set(Calendar.HOUR_OF_DAY, 23);
calendar.set(Calendar.SECOND, 59);
calendar.set(Calendar.MINUTE, 59);
calendar.set(Calendar.DAY_OF_MONTH,
calendar.getActualMaximum(calendar.DAY_OF_MONTH));
return sdf.format(calendar.getTime());
} /**
* 获得当月起始时间
*
* @return
* @throws ParseException
*/
public static String getStartLastMounth(String dateStr)
throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = sdf.parse(dateStr);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(Calendar.MONTH, -1);
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.DAY_OF_MONTH,
calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
return sdf.format(calendar.getTime());
} /**
* 获得当月结束时间
*
* @return
* @throws ParseException
*/
public static String getEndLastMounth(String dateStr) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = sdf.parse(dateStr);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(Calendar.MONTH, -1);
calendar.set(Calendar.HOUR_OF_DAY, 23);
calendar.set(Calendar.SECOND, 59);
calendar.set(Calendar.MINUTE, 59);
calendar.set(Calendar.DAY_OF_MONTH,
calendar.getActualMaximum(calendar.DAY_OF_MONTH));
return sdf.format(calendar.getTime());
} /**
* 获取当前季度 起始时间
*
* @return
* @throws ParseException
*/
public static String getStartQuarter(String dateStr) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = sdf.parse(dateStr);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
int currentMonth = calendar.get(Calendar.MONTH) + 1;
try {
if (currentMonth >= 1 && currentMonth <= 3)
calendar.set(Calendar.MONTH, 0);
else if (currentMonth >= 4 && currentMonth <= 6)
calendar.set(Calendar.MONTH, 3);
else if (currentMonth >= 7 && currentMonth <= 9)
calendar.set(Calendar.MONTH, 4);
else if (currentMonth >= 10 && currentMonth <= 12)
calendar.set(Calendar.MONTH, 9);
} catch (Exception e) {
e.printStackTrace();
}
calendar.set(Calendar.DAY_OF_MONTH,
calendar.getActualMinimum(calendar.DAY_OF_MONTH));
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MINUTE, 0);
return sdf.format(calendar.getTime());
} /**
* 获取当季的结束时间
*
* @throws ParseException
*/
public static String getEndQuarter(String dateStr) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = sdf.parse(dateStr);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
int currentMonth = calendar.get(calendar.MONTH) + 1;
try {
if (currentMonth >= 1 && currentMonth <= 3) {
calendar.set(Calendar.MONTH, 2);
calendar.set(Calendar.DATE, 29);
} else if (currentMonth >= 4 && currentMonth <= 6) {
calendar.set(Calendar.MONTH, 5);
calendar.set(Calendar.DATE, 30);
} else if (currentMonth >= 7 && currentMonth <= 9) {
calendar.set(Calendar.MONTH, 8);
calendar.set(Calendar.DATE, 30);
} else if (currentMonth >= 10 && currentMonth <= 12) {
calendar.set(Calendar.MONTH, 11);
calendar.set(Calendar.DATE, 31);
}
} catch (Exception e) {
e.printStackTrace();
}
calendar.set(Calendar.DAY_OF_MONTH,
calendar.getActualMaximum(calendar.DAY_OF_MONTH));
calendar.set(Calendar.HOUR_OF_DAY, 23);
calendar.set(Calendar.SECOND, 59);
calendar.set(Calendar.MINUTE, 59);
return sdf.format(calendar.getTime());
} /**
* 获取当年起始时间
*
* @throws ParseException
*/
public static String getStartYear(String dateStr) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = sdf.parse(dateStr);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
try {
calendar.set(Calendar.MONTH, 0);
calendar.set(Calendar.DAY_OF_MONTH,
calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
} catch (Exception e) {
e.printStackTrace();
}
calendar.set(Calendar.DAY_OF_MONTH,
calendar.getActualMinimum(calendar.DAY_OF_MONTH));
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MINUTE, 0);
return sdf.format(calendar.getTime());
} /**
* 获取当年结束时间
*
* @throws ParseException
*/
public static String getEndYear(String dateStr) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = sdf.parse(dateStr);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
try {
calendar.set(Calendar.MONTH, 11);
calendar.set(Calendar.DAY_OF_MONTH,
calendar.getMaximum(Calendar.DAY_OF_MONTH));
} catch (Exception e) {
e.printStackTrace();
}
calendar.set(Calendar.DAY_OF_MONTH,
calendar.getActualMaximum(calendar.DAY_OF_MONTH));
calendar.set(Calendar.HOUR_OF_DAY, 23);
calendar.set(Calendar.SECOND, 59);
calendar.set(Calendar.MINUTE, 59);
return sdf.format(calendar.getTime()); } public static void main(String[] args) {
// System.out.println(getDateTime());
// System.out.println(getStartDate());
// Calendar c1 =
// DateUtils.convUtilDateToUtilCalendar(DateUtils.parseDate("2014-05-10 10:52",15));
// TimeZone tz = TimeZone.getTimeZone("GMT+08:00"); // 获得时区
// Calendar cal = Calendar.getInstance();
// cal.set(Calendar.SECOND, 0);
// cal.setTimeZone(tz); // 设置时区
// c1.setTimeZone(tz);
// System.out.println(c1.getTimeInMillis());
// System.out.println(cal.getTimeInMillis());
// System.out.println(c1.getTime());
// System.out.println(cal.getTime());
// System.out.println(DateUtils.calendarTime(c1, cal));;
// System.out.println(DateUtils.getCountdownTime("2015-01-25 18:22:00"));
// System.out.println(DateUtils.getCountdownTime("2015-01-24 18:22:00"));
// System.out.println(DateUtils.getCountdownTime("2015-01-24 18:15:00"));
// System.out.println(DateUtils.isOldTime("2015-01-23 19:22:00"));
// System.out.println(DateUtils.getDiffTimeLessNow("2015-01-23 19:15:00")); Calendar c = Calendar.getInstance();
try {
System.out.println(getStartWeek("2017-01-15 05:00:00"));
// System.out.println(getLastWeekEndTime());
// System.out.println(getStartWeek("2015-01-23 19:22:00"));
// System.out.println(getEndWeek("2015-01-23 19:22:00"));
// System.out.println(getStartMounth("2015-01-23 19:22:00"));
// System.out.println(getEndMounth("2015-01-23 19:22:00"));
// System.out.println(getStartQuarter("2015-01-23 19:22:00"));
// System.out.println(getEndQuarter("2015-01-23 19:22:00"));
// System.out.println(getStartYear("2015-01-23 19:22:00"));
// System.out.println(getEndYear("2015-01-23 19:22:00"));
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} }
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