java时间戳与日期相互转换工具详解

java时间戳与日期相互转换工具详解

本文为大家分享了java日期与时间戳相互转换大全，供大家参考，具体内容如下

package com.crm.util;

import java.math.BigDecimal;

import java.text.DecimalFormat;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Date;

/**

* @author DingJiaCheng

* */

public class DateFormatUtil {

/**

* 时间戳转日期

* @param ms

* @return

*/

public static Date transForDate(Integer ms){

if(ms==null){

ms=0;

}

long msl=(long)ms*1000;

SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

Date temp=null;

if(ms!=null){

try {

String str=sdf.format(msl);

temp=sdf.parse(str);

} catch (ParseException e) {

e.printStackTrace();

}

}

return temp;

}

/**

* 获取晚上9点半的时间戳

*

* @return

*/

public static int getTimes(int day, int hour, int minute) {

Calendar cal = Calendar.getInstance();

cal.add(Calendar.DATE, day);

cal.set(Calendar.HOUR_OF_DAY, hour);

cal.set(Calendar.SECOND, 0);

cal.set(Calendar.MINUTE, minute);

cal.set(Calendar.MILLISECOND, 0);

return (int) (cal.getTimeInMillis() / 1000);

}

/**

* 获取当前时间往上的整点时间

*

* @return

*/

public static int getIntegralTime() {

Calendar cal = Calendar.getInstance();

cal.add(Calendar.HOUR_OF_DAY, 1);

cal.set(Calendar.SECOND, 0);

cal.set(Calendar.MINUTE, 0);

cal.set(Calendar.MILLISECOND, 0);

return (int) (cal.getTimeInMillis() / 1000);

}

public static int getIntegralTimeEnd() {

Calendar cal = Calendar.getInstance();

cal.set(Calendar.HOUR_OF_DAY, 24);

cal.set(Calendar.SECOND, 0);

cal.set(Calendar.MINUTE, 0);

cal.set(Calendar.MILLISECOND, 0);

return (int) (cal.getTimeInMillis() / 1000);

}

/**

* 时间戳转日期

* @param ms

* @return

*/

public static Date transForDate3(Integer ms){

if(ms==null){

ms=0;

}

long msl=(long)ms*1000;

SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm");

Date temp=null;

if(ms!=null){

try {

String str=sdf.format(msl);

temp=sdf.parse(str);

} catch (ParseException e) {

e.printStackTrace();

}

}

return temp;

}

/**

* 时间戳转日期

* @param ms

* @return

*/

public static Date transForDate(Long ms){

if(ms==null){

ms=(long)0;

}

long msl=(long)ms*1000;

SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

Date temp=null;

if(ms!=null){

try {

String str=sdf.format(msl);

temp=sdf.parse(str);

} catch (ParseException e) {

e.printStackTrace();

}

}

return temp;

}

public static String transForDate1(Integer ms){

String str = "";

if(ms!=null){

long msl=(long)ms*1000;

SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

if(ms!=null){

try {

str=sdf.format(msl);

} catch (Exception e) {

e.printStackTrace();

}

}

}

return str;

}

public static String transForDate2(Integer ms){

String str = "";

if(ms!=null){

long msl=(long)ms*1000;

SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");

if(ms!=null){

try {

str=sdf.format(msl);

} catch (Exception e) {

e.printStackTrace();

}

}

}

return str;

}

public static String transForDate4(Integer ms){

String str = "";

if(ms!=null){

long msl=(long)ms*1000;

SimpleDateFormat sdf=new SimpleDateFormat("yyyy.MM.dd");

if(ms!=null){

try {

str=sdf.format(msl);

} catch (Exception e) {

e.printStackTrace();

}

}

}

return str;

}

public static String transForDate5(Integer ms){

String str = "";

if(ms!=null){

long msl=(long)ms*1000;

SimpleDateFormat sdf=new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");

if(ms!=null){

try {

str=sdf.format(msl);

} catch (Exception e) {

e.printStackTrace();

}

}

}

return str;

}

public static String transForDateInChinese(Integer ms){

String str = "";

if(ms!=null){

long msl=(long)ms*1000;

SimpleDateFormat sdf=new SimpleDateFormat("yyyy年MM月dd日 HH:mm:ss");

if(ms!=null){

try {

str=sdf.format(msl);

} catch (Exception e) {

e.printStackTrace();

}

}

}

return str;

}

/**

* 日期转时间戳

* @param date

* @return

*/

public static Integer transForMilliSecond(Date date){

if(date==null) return null;

return (int)(date.getTime()/1000);

}

/**

* 获取当前时间戳

* @return

*/

public static Integer currentTimeStamp(){

return (int)(System.currentTimeMillis()/1000);

}

/**

* 日期字符串转时间戳

* @param dateStr

* @return

*/

public static Integer transForMilliSecond(String dateStr){

Date date = DateFormatUtil.formatDate(dateStr);

return date == null ? null : DateFormatUtil.transForMilliSecond(date);

}

/**

* 日期字符串转时间戳

* @param dateStr

* @return

*/

public static Integer transForMilliSecond(String dateStr,String format){

Date date = DateFormatUtil.formatDate(dateStr,format);

return date == null ? null : DateFormatUtil.transForMilliSecond(date);

}

/**

* 日期字符串转时间戳

* @param dateStr

* @param 格式 如"yyyy-mm-dd"

* @return

*/

public static Integer transForMilliSecondByTim(String dateStr,String tim){

SimpleDateFormat sdf=new SimpleDateFormat(tim);

Date date =null;

try {

date = sdf.parse(dateStr);

} catch (ParseException e) {

e.printStackTrace();

}

return date == null ? null : DateFormatUtil.transForMilliSecond(date);

}

/**

* 字符串转日期，格式为："yyyy-MM-dd HH:mm:ss"

* @param dateStr

* @return

*/

public static Date formatDate(String dateStr){

SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

Date result=null;

try {

result = sdf.parse(dateStr);

} catch (ParseException e) {

e.printStackTrace();

}

return result;

}

/**

* 字符串转日期，格式为："yyyy-MM-dd HH:mm:ss"

* @param dateStr

* @return

*/

public static Date formatDate(String dateStr,String format){

SimpleDateFormat sdf=new SimpleDateFormat(format);

Date result=null;

try {

result = sdf.parse(dateStr);

} catch (ParseException e) {

e.printStackTrace();

}

return result;

}

/**

* 日期转字符串

* @param date

* @return

*/

public static String formatDate(Date date){

SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

String result=null;

result = sdf.format(date);

return result;

}

/**

* 日期转字符串

* @param date

* @return

*/

public static String formatDate(Date date,String format){

SimpleDateFormat sdf=new SimpleDateFormat(format);

String result=null;

result = sdf.format(date);

return result;

}

/**

* 时间戳格式化输出（httl模版用）

*

* @param ms 时间戳

* @param format 格式化

* @return

*/

public static String transForDate(Integer ms, String format){

String str = "";

if(ms!=null){

long msl=(long)ms*1000;

SimpleDateFormat sdf=new SimpleDateFormat(format);

if(!ms.equals(0)){

try {

str=sdf.format(msl);

} catch (Exception e) {

e.printStackTrace();

}

}

}

return str;

}

/**

* 取BigDecimal类型数的整数或小数部分（httl模版用）

*

* @param b 值

* @param mode 模式 0取整 1去小数部分

* @return

*/

public static String splitBigDecimal(BigDecimal b, int mode) {

DecimalFormat df = new DecimalFormat("0.00");

String s = df.format(b);

if(mode==0){

return s.split("\\.")[0];

}else {

return "."+s.split("\\.")[1];

}

}

/**

* 计算两个日期之间差的天数（httl模版用）

*

* @param ts1 时间戳1

* @param ts2 时间戳2

* @return

*/

public static int caculate2Days(Integer ts1, Integer ts2) {

Date firstDate = DateFormatUtil.transForDate(ts1);

Date secondDate = DateFormatUtil.transForDate(ts2);

Calendar calendar = Calendar.getInstance();

calendar.setTime(firstDate);

int dayNum1 = calendar.get(Calendar.DAY_OF_YEAR);

calendar.setTime(secondDate);

int dayNum2 = calendar.get(Calendar.DAY_OF_YEAR);

return Math.abs(dayNum1 - dayNum2);

}

/**

* 给手机加密中间四位加星号

*

* @param mobile

* @return

*/

public String mobileSerect(String mobile){

if(!StringUtils.isBlank(mobile)){

int between = mobile.length()/2;

mobile = mobile.substring(0, between-2)+"****"+mobile.substring(between+2, mobile.length());

}

return mobile;

}

/**

* 给邮箱加密加星号

*

* @param email

* @return

*/

public String emailSerect(String email) {

if(!StringUtils.isBlank(email)){

int length = email.lastIndexOf("@");

email = email.substring(0, 2)+"****"+email.substring(length-2, email.length());

}

return email;

}

/**

* BigDecimal类型数据相加

*

* @param BigDecimal source

* @param BigDecimal target

* @return

*/

public BigDecimal sumBigDicimal(BigDecimal source, BigDecimal target) {

source = source.add(target);

return source;

}

/**

* BigDecimal类型数据相加

*

* @param BigDecimal source

* @param BigDecimal target

* @return

*/

public BigDecimal sumBigDicimalAndDouble(BigDecimal source, Double target) {

BigDecimal new_target = new BigDecimal(target);

source = source.add(new_target);

return source;

}

/**

* BigDecimal类型数据相减

*

* @param BigDecimal source

* @param BigDecimal target

* @return

*/

public BigDecimal subBigDicimal(BigDecimal source, BigDecimal target) {

source = source.subtract(target);

return source;

}

/**

* 获取传入时间和当前时间的时间差

* @return

*/

public static Long getTimediff(int timeStamp){

Date d1 = DateFormatUtil.transForDate(timeStamp);

Date today = new Date();

if(d1.getTime()

return null;

}

return (d1.getTime()-today.getTime())/1000;

}

/**

* 获取某周的第一天日期

* @param week 0 当周 1 上一周 -1 下一周

* @return

*/

public static String weekFirstDay(int week){

Calendar c1 = Calendar.getInstance();

int dow = c1.get(Calendar.DAY_OF_WEEK);

c1.add(Calendar.DATE, -dow-7*(week-1)-5 );

String d1 = new SimpleDateFormat("yyyy-MM-dd").format(c1.getTime());

return d1+" 00:00:00";

}

/**

* 当前时间加一年

*/

public static String addYear(int startTime){

Date firstDate = DateFormatUtil.transForDate(startTime);

Calendar calendar = Calendar.getInstance();

calendar.setTime(firstDate);

calendar.add(Calendar.YEAR,1);

String d1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(calendar.getTime());

return d1;

}

/**

* 获取某周的最后一天日期

* @param week

* @return

*/

public static String weekLastDay(int week){

Calendar c1 = Calendar.getInstance();

int dow = c1.get(Calendar.DAY_OF_WEEK);

c1.add(Calendar.DATE, -dow-7*(week-1)+1);

String d1 = new SimpleDateFormat("yyyy-MM-dd").format(c1.getTime());

return d1+" 23:59:59";

}

/**

* 和当前时间比对

* @return

*/

public static boolean greaterThanNow(int timeStamp){

Date d1 = DateFormatUtil.transForDate(timeStamp);

Date today = new Date();

if(d1.getTime()>=today.getTime()){

return true;

}

return false;

}

/**

* HH:mm:ss格式时间转换为1970-01-01日的时间戳（也就是只有时间没有日期的情况要求使用时间戳表示时间）

* @author DingJiaCheng

* */

public static int transFromTime(String time){

return transForMilliSecond("1970-01-01 "+time,"yyyy-mm-dd HH:mm:ss");

}

/**

* 时间戳转换为HH：mm：ss格式时间(日期去除)

* @author DingJiaCheng

* */

public static String transToTime(int time){

String s = new String(transForDate1(time));

String ss[] = s.split(" ");

return ss[1];

}

public static int transToChuo(String dateString){

SimpleDateFormat simpleDateFormat =new SimpleDateFormat("yyyy-MM-dd");

int res = 0;

try {

Date date=simpleDateFormat .parse(dateString);

res = (int) date.getTime();

} catch (ParseException e) {

e.printStackTrace();

}

return res;

}

public static void main(String[] args) {

//System.out.println(getIntegralTimeEnd());

System.out.println(transForDate2(transForMilliSecond("2015-02-25 00:00:00")));

//System.out.println(transForMilliSecond("2016-01-25","yyyy-mm-dd"));

//System.out.println(transForDate1(transForMilliSecond("1970-01-01 00:00:00","yyyy-mm-dd HH:mm:ss")));

//System.out.println(currentTimeStamp());

//System.out.println(transForDate(currentTimeStamp()));

//System.out.println(new Date());

//System.out.println(DateUtils.getDate());

System.out.println(transFromTime("00:00:01"));

System.out.println(transToTime(transFromTime("15:01:13")));

}

}

return null;

}

return (d1.getTime()-today.getTime())/1000;

}

/**

* 获取某周的第一天日期

* @param week 0 当周 1 上一周 -1 下一周

* @return

*/

public static String weekFirstDay(int week){

Calendar c1 = Calendar.getInstance();

int dow = c1.get(Calendar.DAY_OF_WEEK);

c1.add(Calendar.DATE, -dow-7*(week-1)-5 );

String d1 = new SimpleDateFormat("yyyy-MM-dd").format(c1.getTime());

return d1+" 00:00:00";

}

/**

* 当前时间加一年

*/

public static String addYear(int startTime){

Date firstDate = DateFormatUtil.transForDate(startTime);

Calendar calendar = Calendar.getInstance();

calendar.setTime(firstDate);

calendar.add(Calendar.YEAR,1);

String d1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(calendar.getTime());

return d1;

}

/**

* 获取某周的最后一天日期

* @param week

* @return

*/

public static String weekLastDay(int week){

Calendar c1 = Calendar.getInstance();

int dow = c1.get(Calendar.DAY_OF_WEEK);

c1.add(Calendar.DATE, -dow-7*(week-1)+1);

String d1 = new SimpleDateFormat("yyyy-MM-dd").format(c1.getTime());

return d1+" 23:59:59";

}

/**

* 和当前时间比对

* @return

*/

public static boolean greaterThanNow(int timeStamp){

Date d1 = DateFormatUtil.transForDate(timeStamp);

Date today = new Date();

if(d1.getTime()>=today.getTime()){

return true;

}

return false;

}

/**

* HH:mm:ss格式时间转换为1970-01-01日的时间戳（也就是只有时间没有日期的情况要求使用时间戳表示时间）

* @author DingJiaCheng

* */

public static int transFromTime(String time){

return transForMilliSecond("1970-01-01 "+time,"yyyy-mm-dd HH:mm:ss");

}

/**

* 时间戳转换为HH：mm：ss格式时间(日期去除)

* @author DingJiaCheng

* */

public static String transToTime(int time){

String s = new String(transForDate1(time));

String ss[] = s.split(" ");

return ss[1];

}

public static int transToChuo(String dateString){

SimpleDateFormat simpleDateFormat =new SimpleDateFormat("yyyy-MM-dd");

int res = 0;

try {

Date date=simpleDateFormat .parse(dateString);

res = (int) date.getTime();

} catch (ParseException e) {

e.printStackTrace();

}

return res;

}

public static void main(String[] args) {

//System.out.println(getIntegralTimeEnd());

System.out.println(transForDate2(transForMilliSecond("2015-02-25 00:00:00")));

//System.out.println(transForMilliSecond("2016-01-25","yyyy-mm-dd"));

//System.out.println(transForDate1(transForMilliSecond("1970-01-01 00:00:00","yyyy-mm-dd HH:mm:ss")));

//System.out.println(currentTimeStamp());

//System.out.println(transForDate(currentTimeStamp()));

//System.out.println(new Date());

//System.out.println(DateUtils.getDate());

System.out.println(transFromTime("00:00:01"));

System.out.println(transToTime(transFromTime("15:01:13")));

}

}

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