日期操作java和js类
日期操作java和js类 比如某月第一天和最后一天
1.java
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Map;
import javax.xml.crypto.Data;
import org.apache.commons.io.EndianUtils;
public class DateUtil {
private static final String defaultFormat = "yyyy-MM-dd HH:mm:ss";
private static final SimpleDateFormat MONTH_SDF = new SimpleDateFormat("yyyy-MM");
private static final SimpleDateFormat DAY_SDF = new SimpleDateFormat("yyyy-MM-dd");
public static Date getDate(String text, String format) {
SimpleDateFormat sdf = new SimpleDateFormat(format);
Date date = null;
try {
date = sdf.parse(text);
} catch (ParseException e) {
e.printStackTrace();
}
return date;
}
public static Date getDate(String text) {
return getDate(text, defaultFormat);
}
public static String fmtDate(Date date) {
return fmtDate(date, defaultFormat);
}
public static String fmtDate(Date date, String format) {
SimpleDateFormat sdf = new SimpleDateFormat(format);
return sdf.format(date);
}
public static java.sql.Date getSQLDate(String text, String format) {
if (text == null || "".equals(text)) {
return null;
}
long time = getDate(text, format).getTime();
return new java.sql.Date(time);
}
public static java.sql.Timestamp getTimestamp(Date date) {
return new java.sql.Timestamp(date.getTime());
}
/**
* 获取当月第一天'yyyy-MM' 空或不支持格式返回当前月第一天
*
* @param date
* yyyy-MM
* @return 'yyyy-MM-dd'
*/
public static String getMonthFirstDay(String date) {
Date theDate;
try {
theDate = MONTH_SDF.parse(date);
} catch (ParseException e) {
e.printStackTrace();
theDate = new Date();
}
return getMonthFirstDay(theDate);
}
/**
* 获取当月第一天'yyyy-MM' 空或不支持格式返回当前月第一天
*
* @param date
* @return 'yyyy-MM-dd'
*/
public static String getMonthFirstDay(Date date) {
return DAY_SDF.format(getFirstDayDate(date));
}
/**
* 获取当月第一天'yyyy-MM' 空或不支持格式返回当前月第一天
*
* @param date
* @return 'yyyy-MM-dd'
*/
public static Date getFirstDayDate(Date date) {
GregorianCalendar c = (GregorianCalendar) Calendar.getInstance();
c.setTime(date);
c.set(Calendar.DAY_OF_MONTH, 1);
return c.getTime();
}
// 获得下个月第一天的日期
public static String getNextMonthFirst() {
String str = "";
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Calendar lastDate = Calendar.getInstance();
lastDate.add(Calendar.MONTH, 1);// 减一个月
lastDate.set(Calendar.DATE, 1);// 把日期设置为当月第一天
str = sdf.format(lastDate.getTime());
return str;
}
// 获得下个月最后一天的日期
public static String getNextMonthEnd() {
String str = "";
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Calendar lastDate = Calendar.getInstance();
lastDate.add(Calendar.MONTH, 1);// 加一个月
lastDate.set(Calendar.DATE, 1);// 把日期设置为当月第一天
lastDate.roll(Calendar.DATE, -1);// 日期回滚一天，也就是本月最后一天
str = sdf.format(lastDate.getTime());
return str;
}
/**
* 获取当月最后一天'yyyy-MM' 空或不支持格式返回当前月最后一天
*
* @param date
* @return 'yyyy-MM-dd'
*/
public static String getMonthLastDay(String date) {
Date theDate;
try {
theDate = MONTH_SDF.parse(date);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
theDate = new Date();
}
return getMonthLastDay(theDate);
}
/**
* 获取当月最后一天'yyyy-MM' 空或不支持格式返回当前月最后一天
*
* @param date
* @return 'yyyy-MM-dd'
*/
public static String getMonthLastDay(Date date) {
return DAY_SDF.format(getLastDayDate(date));
}
/**
* 得到最后一天的日期
*
* @param date
* @return
*/
public static Date getLastDayDate(Date date) {
GregorianCalendar c = (GregorianCalendar) Calendar.getInstance();
c.setTime(date);
c.set(Calendar.DAY_OF_MONTH, 1);
c.roll(Calendar.DAY_OF_MONTH, -1);
return c.getTime();
}
/**
* 日期添加相应天数
*
* @param date
* @return 'yyyy-MM-dd'
*/
public static Date addDay(Date date, int increaseNum) {
GregorianCalendar c = (GregorianCalendar) Calendar.getInstance();
c.setTime(date);
c.add(Calendar.DAY_OF_MONTH, increaseNum);
return c.getTime();
}
/**
* 日期添加相应天数
*
* @param date
* @return 'yyyy-MM-dd'
*/
public static Date addMonth(Date date, int increaseNum) {
GregorianCalendar c = (GregorianCalendar) Calendar.getInstance();
c.setTime(date);
c.add(Calendar.MONTH, increaseNum);
return c.getTime();
}
/**
* 得到一周中星期几的日期
*
* @param date
* @param day
* @return
*/
public static Date getDayOfWeek(Date date, int day) {
GregorianCalendar c = (GregorianCalendar) Calendar.getInstance();
c.setTime(date);
c.set(Calendar.DAY_OF_WEEK, day);
return c.getTime();
}
/**
* 把yyyy-MM-dd类型的日期字符串转换成yyyy-MM-dd 00:00:00或者yyyy-MM-dd 23:59:59类型字符串
*
* @param reqMap
* 请求的map其中包含beginTime,endTime此类字段
* @param startTimeKey
* 开始时间存在reqMap中的key值
* @param endTimeKey
* 结束时间存在reqMap中的key值
* @return
*/
public static Map
if (!StringUtil.isEmpty(startTimeKey) && !StringUtil.isEmpty((String) reqMap.get(startTimeKey))) {
String startDate = (String) reqMap.get(startTimeKey);
startDate = fmtDate(getDate(startDate, "yyyy-MM-dd"), "yyyy-MM-dd");
reqMap.put(startTimeKey, startDate + " 00:00:00");
}
if (!StringUtil.isEmpty(endTimeKey) && !StringUtil.isEmpty((String) reqMap.get(endTimeKey))) {
String endDate = (String) reqMap.get(endTimeKey);
endDate = fmtDate(getDate(endDate, "yyyy-MM-dd"), "yyyy-MM-dd");
reqMap.put(endTimeKey, endDate + " 23:59:59");
}
return reqMap;
}
/**
* 把yyyy-MM-dd类型的日期字符串转换成yyyy-MM-dd 00:00:00或者yyyy-MM-dd 23:59:59类型字符串
*
* @param reqMap
* 请求的map其中包含beginTime,endTime此类字段
* @param startTimeKey
* 开始时间存在reqMap中的key值
* @param endTimeKey
* 结束时间存在reqMap中的key值
* @return
*/
public static Map
String startTime = (String) reqMap.get(startTimeKey);
String endTime = (String) reqMap.get(endTimeKey);
if (StringUtil.isEmpty(startTime)) {
reqMap.put(startTimeKey, getMonthFirstDay(new Date()));
}
if (StringUtil.isEmpty(endTime)) {
reqMap.put(endTimeKey, getMonthLastDay(new Date()));
}
return setDayToTime(reqMap, startTimeKey, endTimeKey);
}
/**
* 比较两个时间的时差
*
* @param DATE1
* @param DATE2
* @return
*/
public static long timeDifference(String DATE1, String DATE2) {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
long days = 0;
try {
Date d1 = df.parse(DATE1);
Date d2 = df.parse(DATE2);
long diff = d2.getTime() - d1.getTime();
days = diff / (1000 * 60 * 60 * 24);
} catch (Exception e) {
}
return days;
}
/**
* 比较时间大小
*
* @param DATE1
* @param DATE2
* @return
*/
public static int compare_date(String DATE1, String DATE2) {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
try {
Date dt1 = df.parse(DATE1);
Date dt2 = df.parse(DATE2);
if (dt1.getTime() > dt2.getTime()) {
return -1;
} else if (dt1.getTime() < dt2.getTime()) {
return 1;
} else {
return 0;
}
} catch (Exception exception) {
exception.printStackTrace();
}
return 0;
}
public static void main(String[] args) {
Date date = new Date();
// fmtDate(date, "yyyy-MM-dd hh:mm:ss");
String nowTime = DateUtil.fmtDate(date, "yyyy-MM-dd HH:mm:ss");
String lastDay = DateUtil.fmtDate(DateUtil.getLastDayDate(date), "yyyy-MM-dd");
int ints = compare_date(nowTime, lastDay + " 23:30:00");
System.out.println(ints);
}
}
2 js
/** ******************************js时间工具**************************************** */
DateUtil = {};
DateUtil.isLeapYear = function(date) {
return (0 == date.getYear() % 4 && ((date.getYear() % 100 != 0) || (date.getYear() % 400 == 0)));
};
/**
* 格式化日期
*/
DateUtil.fomatDate = function(date, fmt) {
var yyyy = date.getFullYear();
var MM = date.getMonth();
var dd = date.getDate();
var HH = date.getHours();
var mm = date.getMinutes();
var ss = date.getSeconds();
var hh = HH > 12 ? HH - 12 : HH;
var dateStr = fmt.replace('yyyy', yyyy).replace('MM',DateUtil.addZero(MM + 1)).replace('dd', DateUtil.addZero(dd))
.replace('HH', DateUtil.addZero(HH)).replace('mm',DateUtil.addZero(mm)).replace('ss', DateUtil.addZero(ss))
.replace('hh', DateUtil.addZero(hh));
return dateStr;
};
DateUtil.addZero = function(num) {
if (num < 10){
return '0' + num;
}
return num;
};
/**
* 将日期字符串转成日期 fmt：yyyy-MM-dd HH:mm:ss 或 yyyy-MM-dd
*/
DateUtil.parseDate = function(str, fmt) {
if (!str) {
return null;
}
var date;
var year = 0;
var month = 0;
var day = 0;
var hour = 0;
var minute = 0;
var second = 0;
var tempStrs = str.split(' ');
if (tempStrs[0]) {
var dateStrs = tempStrs[0].split("-");
year = parseInt(dateStrs[0], 10);
month = parseInt(dateStrs[1], 10) - 1;
day = parseInt(dateStrs[2], 10);
}
if (tempStrs[1]) {
var timeStrs = tempStrs[1].split(":");
hour = parseInt(timeStrs[0], 10);
minute = parseInt(timeStrs[1], 10);
second = parseInt(timeStrs[2], 10);
}
if (fmt == 'yyyy-MM-dd') {
date = new Date(year, month, day);
return date;
} else if (fmt == 'yyyy-MM-dd HH:mm:ss') {
date = new Date(year, month, day, hour, minute, second);
return date;
}
return null;
};
/**
* 获取指定日期最后一天日期
*/
DateUtil.getLastDate = function(date) {
date = arguments[0] || new Date();
var newDate = new Date(date.getTime());
newDate.setMonth(newDate.getMonth() + 1);
newDate.setDate(1);
var time = newDate.getTime() - 24 * 60 * 60 * 1000;
newDate = new Date(time);
return newDate;
};
/**
* 获取指定日期第一天日期
*/
DateUtil.getFirstDate = function(date) {
date = arguments[0] || new Date();
var newDate = new Date(date.getTime());
newDate.setDate(1);
return newDate;
};
/**
* 获取周的第一天
*/
DateUtil.getWeekStartDate = function(date){
date = arguments[0] || new Date();
return new Date(date.getFullYear(), date.getMonth(), date.getDate() - date.getDay()+1);
}
/**
* 获取周的最后一天
*/
DateUtil.getWeekEndDate = function(date){
date = arguments[0] || new Date();
return new Date(date.getFullYear(), date.getMonth(), date.getDate() + (6-date.getDay()+1));
}
/**
* 获取日期差
*/
DateUtil.getDateDiff = function(start,end) {
return Math.round(Math.abs(start - end )/(1000*60*60*24));
};
/**
* 日期计算
*
* @param strInterval
* string 可选值 y 年 m月 d日 w星期 ww周 h时 n分 s秒
* @param num
* int
* @param date
* Date 日期对象
* @return Date 返回日期对象
*/
DateUtil.dateAdd = function(strInterval, num, date) {
date = arguments[2] || new Date();
switch (strInterval) {
case 's':
return new Date(date.getTime() + (1000 * num));
case 'n':
return new Date(date.getTime() + (60000 * num));
case 'h':
return new Date(date.getTime() + (3600000 * num));
case 'd':
return new Date(date.getTime() + (86400000 * num));
case 'w':
return new Date(date.getTime() + ((86400000 * 7) * num));
case 'm':
return new Date(date.getFullYear(), (date.getMonth()) + num, date.getDate(), date.getHours(), date.getMinutes(), date.getSeconds());
case 'y':
return new Date((date.getFullYear() + num), date.getMonth(), date.getDate(), date.getHours(), date.getMinutes(), date.getSeconds());
}
};