package com.donghui.oa.util;
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.TimeZone;
import org.apache.commons.lang.StringUtils;
/**
* 时间工具类
*
* @author Fangpc
*
*/
public class DateUtils{
/** 定义常量 **/
public static final StringDATE_JFP_STR ="yyyyMM";
public static final StringDATE_COLS_STR ="yyyyMMdd";
public static final StringDATE_FULL_STR ="yyyy-MM-dd HH:mm:ss";
public static final StringDATE_SMALL_STR ="yyyy-MM-dd";
public static final StringDATE_KEY_STR ="yyMMddHHmmss";
public static final StringDATETIME_KEYS_STR ="yyMMddHHmmssSSS";
public static final StringDATE_FORMAT_ONE ="yyyy.MM.dd";
public static final StringDATE_FORMAT_TWO ="yyyy-MM-dd";
// 一天的毫秒数86400000 = 24*60*60*1000;
private static final int millisPerDay =86400000;
// 一小时的毫秒数3600000 = 24*60*60*1000;
private static final int millisPerHour =3600000;
/**
* 格式化时间
*
* @param strDate
* @return
*/
public static String format(Date strDate) {
SimpleDateFormat format =new SimpleDateFormat(DATE_FULL_STR);
return format.format(strDate);
}
/**
* 格式化时间
*
* @param strDate
* @return
*/
public static String format(Date strDate, String pattern) {
SimpleDateFormat format =new SimpleDateFormat(pattern);
return format.format(strDate);
}
/**
* 使用预设格式提取字符串日期
*
* @param strDate
* 日期字符串
* @return
*/
public static Date parse(String strDate) {
return parse(strDate,DATE_FULL_STR);
}
/**
* 使用用户格式提取字符串日期
*
* @param strDate
* 日期字符串
* @param pattern
* 日期格式
* @return
*/
public static Date parse(String strDate, String pattern) {
SimpleDateFormat df =new SimpleDateFormat(pattern);
try {
return df.parse(strDate);
} catch (ParseException e) {
e.printStackTrace();
return null;
}
}
/**
* 两个时间比较
*
* @param date1
* @return
*/
public static int compareDateWithNow(Date date1) {
Date date2 =new Date();
int rnum = date1.compareTo(date2);
return rnum;
}
/**
* 两个时间比较(时间戳比较)
*
* @param date1
* @return
*/
public static int compareDateWithNow(long date1) {
long date2 =dateToUnixTimestamp();
if (date1 > date2) {
return 1;
} else if (date1 < date2) {
return -1;
} else {
return 0;
}
}
/**
* 二个时间比较()
*
* @param DATE1
* @param DATE2
* @return 1:前面大于后面
*/
public static int compareDate(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;
}
/**
* 计算时间差 (时间单位,开始时间,结束时间) 调用方法 howLong("h","2007-08-09 10:22:26","2007-08-09
* 20:21:30") ///9小时56分 返回9小时
*/
public static long howLong(String unit, String time1, String time2) throws ParseException{
// 时间单位(如：不足1天(24小时) 则返回0)，开始时间，结束时间
Date date1 =new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(time1);
Date date2 =new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(time2);
long ltime = date1.getTime() - date2.getTime() <0 ? date2.getTime() - date1.getTime()
: date1.getTime() - date2.getTime();
if ("s".equals(unit)) {
return ltime /1000;// 返回秒
} else if ("m".equals(unit)) {
return ltime /60000;// 返回分钟
} else if ("h".equals(unit)) {
return ltime /millisPerHour;// 返回小时
} else if ("d".equals(unit)) {
return ltime /millisPerDay;// 返回天数
} else {
return 0;
}
}
/**
* 获取系统当前时间
*
* @return
*/
public static String getNowTime() {
SimpleDateFormat df =new SimpleDateFormat(DATE_FULL_STR);
return df.format(new Date());
}
/**
* 获取系统当前时间
*
* @return
*/
public static String getNowTime(String type) {
SimpleDateFormat df =new SimpleDateFormat(type);
return df.format(new Date());
}
/**
* 获取系统当前计费期
*
* @return
*/
public static String getJFPTime() {
SimpleDateFormat df =new SimpleDateFormat(DATE_JFP_STR);
return df.format(new Date());
}
/**
* 将指定的日期转换成Unix时间戳
*
* @param date
* date 需要转换的日期 yyyy-MM-dd HH:mm:ss
* @return long 时间戳
*/
public static long dateToUnixTimestamp(String date) {
long timestamp =0;
try {
timestamp =new SimpleDateFormat(DATE_FULL_STR).parse(date).getTime();
} catch (ParseException e) {
e.printStackTrace();
}
return timestamp;
}
/**
* 将指定的日期转换成Unix时间戳
*
* @param dateFormat
* date 需要转换的日期 yyyy-MM-dd
* @return long 时间戳
*/
public static long dateToUnixTimestamp(String date, String dateFormat) {
long timestamp =0;
try {
timestamp =new SimpleDateFormat(dateFormat).parse(date).getTime();
} catch (ParseException e) {
e.printStackTrace();
}
return timestamp;
}
/**
* 将当前日期转换成Unix时间戳
*
* @return long 时间戳
*/
public static long dateToUnixTimestamp() {
long timestamp = System.currentTimeMillis();
return timestamp;
}
/**
* 将Unix时间戳转换成日期
*
* @param timestamp
* timestamp 时间戳
* @return String 日期字符串
*/
public static String unixTimestampToDate(long timestamp) {
if (timestamp ==0) {
return null;
}
SimpleDateFormat sd =new SimpleDateFormat(DATE_FULL_STR);
sd.setTimeZone(TimeZone.getTimeZone("GMT+8"));
return sd.format(new Date(timestamp));
}
/**
* 获取本月最后一天
*
* @return
*/
public static String getDateByMonth(String dateType) {
Calendar calendar = Calendar.getInstance();
// 设置时间,当前时间不用设置
// calendar.setTime(new Date());
// 设置日期为本月最大日期
calendar.set(Calendar.DATE, calendar.getActualMaximum(Calendar.DATE));
SimpleDateFormat format =new SimpleDateFormat(dateType);
return format.format(calendar.getTime());
}
/**
* 当月第一天
*
* @return
*/
public static String getFirstDay(String dateType) {
SimpleDateFormat format =new SimpleDateFormat(dateType);
Calendar calendar = Calendar.getInstance();
Date theDate = calendar.getTime();
GregorianCalendar gcLast =(GregorianCalendar) Calendar.getInstance();
gcLast.setTime(theDate);
gcLast.set(Calendar.DAY_OF_MONTH,1);
return format.format(gcLast.getTime());
}
/**
* 时间相加
* @param beginTime
* @param minute
* @return
*/
public static Date addMinuteTime(Date beginTime, Integer minute) {
Calendar cal = Calendar.getInstance();
cal.setTime(beginTime);
cal.add(Calendar.MINUTE, minute);
Date endTime = cal.getTime();
return endTime;
}
/**
* 获取本周的周一 或周五 true 周一 false 周五
*
* @param isStart
* @return
*/
public static Date getWeekDay(boolean isStart) {
Calendar clen = Calendar.getInstance();
clen.add(Calendar.DAY_OF_MONTH,7);
return getLastWeekDay(isStart, clen.getTime());
}
/**
* 获取上周的周一或周五
*
* @param isStart
* @param date
* @return
*/
public static Date getLastWeekDay(boolean isStart, Date date) {
Calendar clen = Calendar.getInstance();
if (date !=null) {
clen.setTime(date);
}
clen.add(Calendar.DAY_OF_MONTH, -7);
int ss = clen.get(Calendar.DAY_OF_WEEK);
if (!isStart) {
clen.add(Calendar.DAY_OF_MONTH, -(ss -6));
return clen.getTime();
}
clen.add(Calendar.DAY_OF_MONTH, -(ss -2));
return clen.getTime();
}
public static Date timeToZero(Date date) {
Calendar clen = Calendar.getInstance();
if (date !=null) {
clen.setTime(date);
}
clen.set(Calendar.HOUR_OF_DAY,0);
clen.set(Calendar.MINUTE,0);
clen.set(Calendar.SECOND,0);
return clen.getTime();
}
public static Date timeToMax(Date date) {
Calendar clen = Calendar.getInstance();
if (date !=null) {
clen.setTime(date);
}
clen.set(Calendar.HOUR_OF_DAY,23);
clen.set(Calendar.MINUTE,59);
clen.set(Calendar.SECOND,59);
return clen.getTime();
}
/**
* 检查指定时间是否为周末
*
* @param date
* @return
*/
public static boolean dateIsWeekend(Date date) {
boolean bool =false;
try {
Calendar cal = Calendar.getInstance();
cal.setTime(new Date());
if (cal.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY
|| cal.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) {
bool =true;
}
} catch (Exception e) {
e.printStackTrace();
}
return bool;
}
/**
* 获取下一年的日期
*
* @param dateType
* @return
*/
public static String getLastYear(String firstDay, String dateType) {
SimpleDateFormat format =new SimpleDateFormat(dateType);
Calendar calendar =new GregorianCalendar();
try {
calendar.setTime(format.parse(firstDay));
calendar.add(Calendar.YEAR,1);// 把日期往后增加一年.整数往后推,负数往前移动
calendar.add(Calendar.DATE, -1);// 把日期在往后减一天
} catch (ParseException e) {
e.printStackTrace();
}
return format.format(calendar.getTime());
}
/**
* 毫秒转换天数 mss 毫秒数
*/
public static String stmpToDate(Long mss) {
int days =(int) (mss /(1000 *60 *60 *24));
int hours =(int) ((mss %(1000 *60 *60 *24)) /(1000 *60 *60));
int minutes =(int) ((mss %(1000 *60 *60)) /(1000 *60));
return (days >0 ?(days +" 天 ") :"") +(hours >0 ?(hours +" 小时 ") :"") + minutes +" 分钟 ";
}
/**
* 计算两个时间间隔
*
* @param str1
* @param str2
* @return
*/
public static String getDistanceTime(String str1, String str2) {
DateFormat df =new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date one;
Date two;
long day =0;
long hour =0;
long min =0;
long sec =0;
try {
one = df.parse(str1);
two = df.parse(str2);
long time1 = one.getTime();
long time2 = two.getTime();
long diff;
if (time1 < time2) {
diff = time2 - time1;
} else {
diff = time1 - time2;
}
day = diff /(24 *60 *60 *1000);
hour =(diff /(60 *60 *1000) - day *24);
min =((diff /(60 *1000)) - day *24 *60 - hour *60);
sec =(diff /1000 - day *24 *60 *60 - hour *60 *60 - min *60);
} catch (ParseException e) {
e.printStackTrace();
}
// return day + "天" + hour + "小时" + min + "分" + sec + "秒";
return day +"天" + hour +"小时" + min +"分";
}
/**
* 指定时间到当前时间的间隔
*
* @param str1
* @return
*/
public static long curentTimeDiffMin(String str1) {
if(StringUtils.isBlank(str1)){
return 0;
}
DateFormat df =new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date one;
long min =0;
try {
one = df.parse(str1);
long time1 = one.getTime();
long time2 =new Date().getTime();
long diff;
if (time1 < time2) {
diff = time2 - time1;
} else {
diff = time1 - time2;
}
min = diff /(60 *1000);
} catch (ParseException e) {
e.printStackTrace();
}
return min;
}
/**
* 两个日期时间的间隔
*
* @param str1
* @param str2
* @return
*/
public static long twoTimeDiffMin(String str1, String str2) {
DateFormat df =new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date one;
Date two;
long min =0;
try {
one = df.parse(str1);
two = df.parse(str2);
long time1 = one.getTime();
long time2 = two.getTime();
long diff;
if (time1 < time2) {
diff = time2 - time1;
} else {
diff = time1 - time2;
}
min = diff /(60 *1000);
} catch (ParseException e) {
e.printStackTrace();
}
return min;
}
/**
* num 为正数 往后多少天 负数 往前多少天
* dateType 时间格式
*/
public static String getNewDay(int num,String dateType){
if(StringUtils.isEmpty(dateType)){
dateType=DateUtils.DATE_SMALL_STR;
}
Date date=new Date();//取时间
Calendar calendar =new GregorianCalendar();
calendar.setTime(date);
calendar.add(Calendar.DATE,num);//把日期往后增加指定天.整数往后推,负数往前移动
date=calendar.getTime();//这个时间就是日期往后推一天的结果
SimpleDateFormat formatter =new SimpleDateFormat(dateType);
String dateString = formatter.format(date);
return dateString;
}
/**
* 获取上N个月最后一天
* @return
*/
public static Date getLastDateByMonth(int n){
Calendar calEnd = Calendar.getInstance();
calEnd.setTime(new Date());
calEnd.add(Calendar.MONTH, -(n-1));
calEnd.set(Calendar.DAY_OF_MONTH,0);//设置为0号,本月的第0天就是上个月的最后一天
return calEnd.getTime();
}
/**
* 获取上N个月第一天
* @return
*/
public static Date getFirstDateDay(int n) {
Calendar calBegin = Calendar.getInstance();
calBegin.setTime(new Date());
calBegin.add(Calendar.MONTH, -n);
calBegin.set(Calendar.DAY_OF_MONTH,1);//设置为1号,当前日期既为本月第一天
return calBegin.getTime();
}
public static void main(String[] args) {
// DateUtils.format(DateUtils.getFirstDateDay(j),DateUtils.DATE_SMALL_STR)+" 00:00:01"
// DateUtils.format(DateUtils.getLastDateByMonth(j),DateUtils.DATE_SMALL_STR)+" 23:59:59"
System.out.println(DateUtils.format(DateUtils.getFirstDateDay(1),DateUtils.DATE_SMALL_STR)+" 00:00:01");
System.out.println(DateUtils.format(DateUtils.getLastDateByMonth(1),DateUtils.DATE_SMALL_STR)+" 23:59:59");
}
}
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