时间处理函数工具分享(时间戳计算)
import java.text.parseexception;
import java.text.simpledateformat;
import java.util.calendar;
import java.util.date;
import java.util.gregoriancalendar;
import java.util.timezone;
/**
* 时间处理函数
*
* @20080509 15：50
*/
public class dateutil {
private static final string default_pattern = "yyyy-mm-dd hh:mm:ss";
public static final string time_year = "yyyy";
public static final string time_monen = "mm";
public static final string time_day = "dd";
public static string getdate(string interval, date starttime, string pattern) {
calendar temp = calendar.getinstance(timezone.getdefault());
temp.settime(starttime);
temp.add(temp.month, integer.parseint(interval));
simpledateformat sdf = new simpledateformat(pattern);
return sdf.format(temp.gettime());
}
/**
* 将字符串类型转换为时间类型
*
* @return
*/
public static date str2date(string str) {
date d = null;
simpledateformat sdf = new simpledateformat(default_pattern);
try {
d = sdf.parse(str);
} catch (exception e) {
e.printstacktrace();
}
return d;
}
public static date str2date(string str, string pattern) {
date d = null;
simpledateformat sdf = new simpledateformat(pattern);
try {
d = sdf.parse(str);
} catch (exception e) {
e.printstacktrace();
}
return d;
}
/**
* 将时间格式化
*
* @return
*/
public static date datepattern(date date) {
simpledateformat sdf = new simpledateformat(default_pattern);
try {
string dd = sdf.format(date);
date = str2date(dd);
} catch (exception e) {
e.printstacktrace();
}
return date;
}
/**
* 将时间格式化
*/
public static date datepattern(date date, string pattern) {
simpledateformat sdf = new simpledateformat(pattern);
try {
string dd = sdf.format(date);
date = str2date(dd, pattern);
} catch (exception e) {
e.printstacktrace();
}
return date;
}
public static string date2str(date date) {
simpledateformat sdf = new simpledateformat(default_pattern);
return sdf.format(date);
}
public static string date2str(date date, string format) {
simpledateformat sdf = new simpledateformat(format);
return sdf.format(date);
}
/**
* 获取昨天
*
* @param date
* @return
* @throws exception
*/
public static date getlastdate(date date) {
calendar calendar = calendar.getinstance(timezone.getdefault());
calendar.settime(date);
calendar.add(calendar.date, -1);
return str2date(date2str(calendar.gettime()));
}
/**
* 获取前几天
* @param date
* @return
*/
public static date getbeforedate(date date,int dates) {
calendar calendar = calendar.getinstance(timezone.getdefault());
calendar.settime(date);
calendar.add(calendar.date, -dates);
return str2date(date2str(calendar.gettime()));
}
/**
* 获取上周第一天（周一）
*
* @param date
* @return
* @throws exception
*/
public static date getlastweekstart(date date) {
calendar calendar = calendar.getinstance(timezone.getdefault());
calendar.settime(date);
int i = calendar.get(calendar.day_of_week) - 1;
int startnum = 0;
if (i == 0) {
startnum = 7 + 6;
} else {
startnum = 7 + i - 1;
}
calendar.add(calendar.date, -startnum);
return str2date(date2str(calendar.gettime()));
}
/**
* 获取上周最后一天（周末）
*
* @param date
* @return
* @throws exception
*/
public static date getlastweekend(date date) {
calendar calendar = calendar.getinstance(timezone.getdefault());
calendar.settime(date);
int i = calendar.get(calendar.day_of_week) - 1;
int endnum = 0;
if (i == 0) {
endnum = 7;
} else {
endnum = i;
}
calendar.add(calendar.date, -(endnum - 1));
return str2date(date2str(calendar.gettime()));
}
/**
* 根据年和月得到天数
* @param num 月
* @param year 年
* @return
*/
public static int getday(int num,int year){
if(num==1 || num==3 || num==5 || num==7 || num==8 || num==10 || num==12){
return 31;
}else if(num==2){
//判断是否为闰年
if(year%400==0 || (year%4==0 && year%100!=0)){
return 29;
}else{
return 28;
}
}else{
return 30;
}
}
/*
* 计算当前日期距离下个月还有多少天
*/
public static int getdaymis(date time){
int year = integer.parseint(
new simpledateformat(time_year).format(time));//年
int mm = integer.parseint(
new simpledateformat(time_monen).format(time));//月
int dd = integer.parseint(
new simpledateformat(time_day).format(time));//日
//获取当前年月的总天数
int sdd = getday(mm,year);
return sdd-dd;
}
/**
* 日期转秒数
* @param datestring
* @return
*/
public static long gettime(string datestring) {
long time = 0;
try {
date ret = null;
simpledateformat sdf = new simpledateformat("yyyy-mm-dd hh:mm:ss");
ret = sdf.parse(datestring);
time = ret.gettime()/1000;
} catch (exception e) {
}
return time;
}
/**
* 精确计算时间差，精确到日
* @param fistill 起始日期
* @param nowtime 结束日期
* @param type type为1返回年月日（如：2年3个月零5天） 否则返回总的天数
* @return
*/
public static string patienage(date fistill,date nowtime,integer type){
int fyear = integer.parseint(
new simpledateformat(time_year).format(fistill));//起始年
int fmm = integer.parseint(
new simpledateformat(time_monen).format(fistill));//起始月
int fdd = integer.parseint(
new simpledateformat(time_day).format(fistill));//起始日
int nyear = integer.parseint(
new simpledateformat(time_year).format(nowtime));//结束年
int nmm = integer.parseint(
new simpledateformat(time_monen).format(nowtime));//结束月
int ndd = integer.parseint(
new simpledateformat(time_day).format(nowtime));//结束日
int cyear = nyear - fyear;
int cmm = nmm - fmm;
int cdd = ndd - fdd;
int zyear = 0;
int zmm = 0;
int zdd = 0;
int countddd = 0; //年月日累计天数
if(cdd<0){
if(cmm<0){
zyear = cyear - 1;
zmm = (cmm + 12)-1;
int dd = getday(zmm,nyear-1);
zdd = dd + cdd;
countddd = zyear*365+zmm*30+zdd;
}else if(cmm==0){
zyear = cyear - 1;
zmm = 12-1;
int dd = getday(zmm,nyear-1);
zdd = dd + cdd;
countddd = zyear*365+zmm*30+zdd;
}else{
zyear = cyear;
zmm = cmm - 1;
int dd = getday(zmm,nyear);
zdd = dd + cdd;
countddd = zyear*365+zmm*30+zdd;
}
}else if(cdd==0){
if(cmm<0){
zyear = cyear - 1;
zmm = cmm + 12;
zdd = 0;
countddd = zyear*365+zmm*30;
}else if(cmm==0){
zyear = cyear;
zmm = 0;
zdd = 0;
countddd = zyear*365+zmm*30;
}else{
zyear = cyear;
zmm = cmm;
zdd = 0;
countddd = zyear*365+zmm*30;
}
}else{
if(cmm<0){
zyear = cyear - 1;
zmm = cmm + 12;
zdd = cdd;
countddd = zyear*365+zmm*30+zdd;
}else if(cmm==0){
zyear = cyear;
zmm = 0;
zdd = cdd;
countddd = zyear*365+zmm*30+zdd;
}else{
zyear = cyear;
zmm = cmm;
zdd = cdd;
countddd = zyear*365+zmm*30+zdd;
}
}
string ptime = null;
if(zdd!=0){
if(zmm!=0){
if(zyear!=0){
ptime = zyear+"年"+zmm+"个月"+"零"+zdd+"天";
}else{
ptime = zmm+"个月"+"零"+zdd+"天";
}
}else{
if(zyear!=0){
ptime = zyear+"年"+"零"+zdd+"天";
}else{
ptime = zdd+"天";
}
}
}else{
if(zmm!=0){
if(zyear!=0){
ptime = zyear+"年"+zmm+"个月";
}else{
ptime = zmm+"个月";
}
}else{
if(zyear!=0){
ptime = zyear+"年";
}else{
ptime = null;
}
}
}
if(type==1){
return ptime; //返回年月日（如：2年3个月零5天）
}else{
return string.valueof(countddd); //返回总天数
}
}
/**
* 得到月数
* @param year 年数差
* @param month 月数差
* @return
*/
public static int getcmm(integer year,integer month){
int zmm = 0;
if(month < 0){
zmm = (month + 12)+(year-1)*12;
}else if(month == 0){
zmm = year*12;
}else{
zmm = year*12+month;
}
return zmm;
}
/**
* 改更现在时间
*/
public static date changedate(string type, int value) {
calendar calendar = calendar.getinstance(timezone.getdefault());
if (type.equals("month")) {
calendar.set(calendar.month, calendar.get(calendar.month) + value);
} else if (type.equals("date")) {
calendar.set(calendar.date, calendar.get(calendar.date) + value);
}
return calendar.gettime();
}
/**
* 更改时间
*/
public static date changedate(date date, string type, int value) {
if (date != null) {
// calendar calendar = calendar.getinstance(timezone.getdefault());
calendar calendar = new gregoriancalendar();
calendar.settime(date);
// calendar calendar = calendar.
if (type.equals("month")) {
calendar.set(calendar.month, calendar.get(calendar.month) + value);
} else if (type.equals("date")) {
calendar.set(calendar.date, calendar.get(calendar.date) + value);
} else if (type.endswith("year")) {
calendar.set(calendar.year, calendar.get(calendar.year) + value);
}
return calendar.gettime();
}
return null;
}
/**
* haoxw 比较时间是否在这两个时间点之间
*
* @param time1
* @param time2
* @return
*/
public static boolean checktime(string time1, string time2) {
calendar calendar = calendar.getinstance();
date date1 = calendar.gettime();
date date11 = dateutil.str2date(dateutil.date2str(date1, "yyyy-mm-dd") + " " + time1);// 起始时间
calendar c = calendar.getinstance();
c.add(calendar.date, 1);
date date2 = c.gettime();
date date22 = dateutil.str2date(dateutil.date2str(date2, "yyyy-mm-dd") + " " + time2);// 终止时间
calendar scalendar = calendar.getinstance();
scalendar.settime(date11);// 起始时间
calendar ecalendar = calendar.getinstance();
ecalendar.settime(date22);// 终止时间
calendar calendarnow = calendar.getinstance();
if (calendarnow.after(scalendar) && calendarnow.before(ecalendar)) {
return true;
} else {
return false;
}
}
/**
* haoxw 比较时间是否在这两个时间点之间
*
* @param date11
* @param date22
* @return
*/
public static boolean checktime(date date11, date date22) {
calendar scalendar = calendar.getinstance();
scalendar.settime(date11);// 起始时间
calendar ecalendar = calendar.getinstance();
ecalendar.settime(date22);// 终止时间
calendar calendarnow = calendar.getinstance();
if (calendarnow.after(scalendar) && calendarnow.before(ecalendar)) {
return true;
} else {
return false;
}
}
public static boolean checkdate(string date1, string date2) {
date date11 = dateutil.str2date(date1, "yyyy-mm-dd hh:mm:ss");// 起始时间
date date22 = dateutil.str2date(date2, "yyyy-mm-dd hh:mm:ss");// 终止时间
calendar scalendar = calendar.getinstance();
scalendar.settime(date11);// 起始时间
calendar ecalendar = calendar.getinstance();
ecalendar.settime(date22);// 终止时间
calendar calendarnow = calendar.getinstance();
system.out.println(date11.tostring());
system.out.println(date22.tostring());
system.out.println(scalendar.tostring());
system.out.println(ecalendar.tostring());
system.out.println(calendarnow.tostring());
if (calendarnow.after(scalendar) && calendarnow.before(ecalendar)) {
return true;
} else {
return false;
}
}
/**
* 获取interval天之前的日期
*
* @param interval
* @param starttime
* @param pattern
* @return
*/
public static date getintervaldate(string interval, date starttime, string pattern) {
calendar temp = calendar.getinstance();
temp.settime(starttime);
temp.add(temp.date, integer.parseint(interval));
simpledateformat sdf = new simpledateformat(pattern);
string shijian = sdf.format(temp.gettime());
return str2date(shijian);
}
public static date formatdate(date date){
simpledateformat bartdateformat =
new simpledateformat("yyyy-mm-dd");
system.out.println(bartdateformat.format(date));
simpledateformat bartdateformat1 =new simpledateformat("yyyy-mm-dd");
try {
date date1 = bartdateformat1.parse(bartdateformat.format(date));
} catch (parseexception e) {
e.printstacktrace();
}
system.out.println(date.gettime());
return date;
}
public static void main(string arf[]) {
/*string time1 = "2009-05-07 19:20:00";
string time2 = "2009-05-08 19:30:00";
dateutil d = new dateutil();
system.out.println(d.checkdate(time1, time2));
system.out.println(d.date2str(new date()));*/
//system.out.println(d.getintervaldate("-3", new date(), default_pattern));
calendar calendar = calendar.getinstance(timezone.getdefault());
system.out.println(calendar.tostring());
system.out.println(dateutil.str2date("20090731","yyyymmdd"));
system.out.println(dateutil.getbeforedate(new date(),2 ));
system.out.println(dateutil.datepattern(new date()));
simpledateformat bartdateformat =
new simpledateformat("yyyy-mm-dd");
date date = new date();
system.out.println("date;"+bartdateformat.format(date));
simpledateformat bartdateformat1 =new simpledateformat("yyyy-mm-dd");
try {
date date1 = bartdateformat1.parse(bartdateformat.format(date));
system.out.println("日期："+date1);
} catch (parseexception e) {
e.printstacktrace();
}
}
}