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pub.codex.common.utils.DateUtil Maven / Gradle / Ivy
/**
*
*/
package pub.codex.common.utils;
import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;
/**
* 日期、时间类
*
* @ author sys
*/
public class DateUtil {
/**
* 日期转换
*
* @param time
* @param fmt : yyyy-MM-dd HH:mm:ss
* @return
* @ author sys
*/
public static String formatTime(Timestamp time, String fmt) {
if (time == null) {
return "";
}
SimpleDateFormat myFormat = new SimpleDateFormat(fmt);
return myFormat.format(time);
}
/**
* 获取系统当前时间（秒）
*
* @return
* @ author sys
*/
public static Timestamp getTime() {
SimpleDateFormat myFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Calendar calendar = Calendar.getInstance();
String mystrdate = myFormat.format(calendar.getTime());
return Timestamp.valueOf(mystrdate);
}
/**
* 获取当前日期(时间 00:00:00)
*
* @return
* @ author sys
*/
public static Timestamp getDateFirst() {
SimpleDateFormat myFormat = new SimpleDateFormat("yyyy-MM-dd 00:00:00");
Calendar calendar = Calendar.getInstance();
String mystrdate = myFormat.format(calendar.getTime());
return Timestamp.valueOf(mystrdate);
}
/**
* 获取当前日期(时间 23:59:59)
*
* @return
* @ author sys
*/
public static Timestamp getDateLast() {
SimpleDateFormat myFormat = new SimpleDateFormat("yyyy-MM-dd 23:59:59");
Calendar calendar = Calendar.getInstance();
String mystrdate = myFormat.format(calendar.getTime());
return Timestamp.valueOf(mystrdate);
}
/**
* 获取当前日期
*
* @return
* @ author sys
*/
public static Date getDate() {
Calendar calendar = Calendar.getInstance();
return calendar.getTime();
}
/**
* yyyy-MM-dd HH:mm:ss 转换成 Timestamp
*
* @param timeString
* @return
* @ author sys
*/
public static Timestamp getTime(String timeString) {
return Timestamp.valueOf(timeString);
}
/**
* 自定义格式的字符串转换成日期
*
* @param timeString
* @param fmt
* @return
* @throws Exception
* @ author sys
*/
public static Timestamp getTime(String timeString, String fmt) throws Exception {
SimpleDateFormat myFormat = new SimpleDateFormat(fmt);
Date date = myFormat.parse(timeString);
myFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
return getTime(myFormat.format(date));
}
/**
* 格式化日期
*
* @param date
* @param fmt
* @return
* @throws Exception
* @ author sys
*/
public static String formatDate(Date date, String fmt) throws Exception {
if (date == null) {
return "";
}
SimpleDateFormat myFormat = new SimpleDateFormat(fmt);
return myFormat.format(date);
}
/**
* 格式化日期
*
* @param date
* @param fmt
* @return
* @throws Exception
* @ author sys
*/
public static String formatDate(String timeString, String timeStringfmt, String fmt) throws Exception {
SimpleDateFormat myFormat = new SimpleDateFormat(timeStringfmt);
Date date = myFormat.parse(timeString);
myFormat = new SimpleDateFormat(fmt);
return myFormat.format(date);
}
/**
* 返回日期或者时间，如果传入的是日期，返回日期的 00:00:00 时间
*
* @param timeString
* @return
* @throws Exception
* @ author sys
*/
public static Timestamp getDateFirst(String timeString) throws Exception {
if (timeString == null || timeString.equals("")) {
return null;
}
if (timeString.length() > 10) {
return getTime(timeString, "yyyy-MM-dd HH:mm:ss");
} else {
return getTime(timeString, "yyyy-MM-dd");
}
}
/**
* 返回日期或者时间，如果传入的是日期，返回日期的 23:59:59 时间
*
* @param timeString
* @return
* @throws Exception
* @ author sys
*/
public static Timestamp getDateLast(String timeString) throws Exception {
if (timeString == null || timeString.equals("")) {
return null;
}
if (timeString.length() > 10) {
return getTime(timeString, "yyyy-MM-dd HH:mm:ss");
} else {
return getTime(timeString + " 23:59:59", "yyyy-MM-dd HH:mm:ss");
}
}
/**
* 获取本周周一时间，返回格式 yyyy-MM-dd 00:00:00
*
* @return
* @ author sys
*/
public static Timestamp getMonday() {
Calendar calendar = Calendar.getInstance();
int dayofweek = calendar.get(Calendar.DAY_OF_WEEK) - 1;
if (dayofweek == 0)
dayofweek = 7;
calendar.add(Calendar.DATE, -dayofweek + 1);
SimpleDateFormat myFormat = new SimpleDateFormat("yyyy-MM-dd 00:00:00");
String mystrdate = myFormat.format(calendar.getTime());
return Timestamp.valueOf(mystrdate);
}
/**
* 获取本周周日时间，返回格式 yyyy-MM-dd 23:59:59
*
* @return
* @ author sys
*/
public static Timestamp getSunday() {
Calendar calendar = Calendar.getInstance();
int dayofweek = calendar.get(Calendar.DAY_OF_WEEK) - 1;
if (dayofweek == 0)
dayofweek = 7;
calendar.add(Calendar.DATE, -dayofweek + 7);
SimpleDateFormat myFormat = new SimpleDateFormat("yyyy-MM-dd 23:59:59");
String mystrdate = myFormat.format(calendar.getTime());
return Timestamp.valueOf(mystrdate);
}
/**
* 增加天数
*
* @param time
* @param day
* @return
* @ author sys
*/
public static Timestamp addDay(Timestamp time, Long day) {
Timestamp time2 = new Timestamp(time.getTime() + day * 1000 * 60 * 60 * 24);
return time2;
}
/**
* 比较 2 个日期格式的字符串
*
* @param str1 格式 ：yyyyMMdd
* @param str2 格式 ：yyyyMMdd
* @return
* @ author sys
*/
public static Integer compareDate(String str1, String str2) throws Exception {
return Integer.parseInt(str1) - Integer.parseInt(str2);
}
/**
* 2 个时间的相差天数
*
* @param time1
* @param time2
* @return
* @ author sys
*/
public static Integer getDay(Timestamp time1, Timestamp time2) {
Long dayTime = (time1.getTime() - time2.getTime()) / (1000 * 60 * 60 * 24);
return dayTime.intValue();
}
/**
* 获取系统当前时间（分）
*
* @return
* @ author sys
*/
public static String getMinute() {
SimpleDateFormat myFormat = new SimpleDateFormat("yyyyMMddHHmm");
return myFormat.format(new Date());
}
/**
* 获取系统当前时间
*
* @return
* @ formatStyle 时间格式
* @ author sys
*/
public static String getDateTime() {
return DateUtil.getDateTime("yyyyMMddHHmmss");
}
/**
* 获取系统当前时间
*
* @return
* @ formatStyle 时间格式
* @ author sys
*/
public static String getDateTime(String formatStyle) {
if (formatStyle == null || "".equals(formatStyle)) {
formatStyle = "yyyyMMddHHmmss";
}
SimpleDateFormat myFormat = new SimpleDateFormat(formatStyle);
return myFormat.format(new Date());
}
/**
* 格式化时间成yyyy-MM-dd HH:mm:ss
*
* @return
* @ formatStyle 时间格式
* @ author sys
*/
public static String formatDateTime(String time) throws ParseException{
return DateUtil.formatDateTime(time,"yyyy-MM-dd HH:mm:ss");
}
/**
* 格式化时间成yyyy-MM-dd HH:mm:ss
*
* @return
* @ formatStyle 时间格式
* @ author sys
*/
public static String formatDateTime(String time,String timeStr) throws ParseException{
if (timeStr == null || "".equals(timeStr)) {
timeStr = "yyyy-MM-dd HH:mm:ss";
}
Date date = new SimpleDateFormat("yyyyMMddHHmmss").parse(time);
SimpleDateFormat myFormat = new SimpleDateFormat(timeStr);
return myFormat.format(date);
}
/**
* 转换成时间 字符串格式必须为 yyyy-MM-dd HH:mm:ss 或 yyyy-MM-dd
*
* @return
* @throws ParseException
* @ author sys
*/
public static Date parseToDate(String val) throws ParseException {
Date date = null;
if (val != null && val.trim().length() != 0 && !val.trim().toLowerCase().equals("null")) {
val = val.trim();
if (val.length() > 10) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
date = sdf.parse(val);
}
if (val.length() <= 10) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
date = sdf.parse(val);
}
}
return date;
}
/**
* 获取上月的第一天 yyyy-MM-dd 00:00:00 和最后一天 yyyy-MM-dd 23:59:59
*
* @return
* @ author sys
*/
@SuppressWarnings("static-access")
public static Map getPreMonth() {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Calendar cal = Calendar.getInstance();
GregorianCalendar gcLast = (GregorianCalendar) Calendar.getInstance();
Calendar calendar = Calendar.getInstance();
calendar.setTime(new Date());
calendar.add(Calendar.MONTH, -1);
Date theDate = calendar.getTime();
gcLast.setTime(theDate);
gcLast.set(Calendar.DAY_OF_MONTH, 1);
String day_first_prevM = df.format(gcLast.getTime());
StringBuffer str = new StringBuffer().append(day_first_prevM).append(" 00:00:00");
day_first_prevM = str.toString(); //上月第一天
calendar.add(cal.MONTH, 1);
calendar.set(cal.DATE, 1);
calendar.add(cal.DATE, -1);
String day_end_prevM = df.format(calendar.getTime());
StringBuffer endStr = new StringBuffer().append(day_end_prevM).append(" 23:59:59");
day_end_prevM = endStr.toString(); //上月最后一天
Map map = new HashMap();
map.put("prevMonthFD", day_first_prevM);
map.put("prevMonthPD", day_end_prevM);
return map;
}
/**
* 获取本月的第一天 yyyy-MM-dd 00:00:00
*
* @return
* @ author sys
*/
public static String getNowMonth() {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
GregorianCalendar gcLast = (GregorianCalendar) Calendar.getInstance();
Calendar calendar = Calendar.getInstance();
calendar.setTime(new Date());
calendar.add(Calendar.MONTH, 0);
Date theDate = calendar.getTime();
gcLast.setTime(theDate);
gcLast.set(Calendar.DAY_OF_MONTH, 1);
String day_first_prevM = df.format(gcLast.getTime());
StringBuffer str = new StringBuffer().append(day_first_prevM).append(" 00:00:00");
day_first_prevM = str.toString(); //本月第一天
return day_first_prevM;
}
/**
* 获取上周周一时间，返回格式 yyyy-MM-dd 00:00:00
*
* @return
* @ author sys
*/
@SuppressWarnings("static-access")
public static Timestamp getPreMonday() {
Calendar calendar = Calendar.getInstance();
int dayofweek = calendar.get(Calendar.DAY_OF_WEEK);
System.out.println(dayofweek);
if (dayofweek == 1) {
calendar.add(calendar.WEEK_OF_MONTH, -1);
}
calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
calendar.add(calendar.WEEK_OF_MONTH, -1);
SimpleDateFormat myFormat = new SimpleDateFormat("yyyy-MM-dd 00:00:00");
String mystrdate = myFormat.format(calendar.getTime());
return Timestamp.valueOf(mystrdate);
}
/**
* 获取上周周日时间，返回格式 yyyy-MM-dd 23:59:59
*
* @return
* @ author sys
*/
@SuppressWarnings("static-access")
public static Timestamp getPreSunday() {
Calendar calendar = Calendar.getInstance();
int dayofweek = calendar.get(Calendar.DAY_OF_WEEK);
if (dayofweek != 1) {
calendar.add(calendar.WEEK_OF_MONTH, +1);
}
calendar.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
calendar.add(calendar.WEEK_OF_MONTH, -1);
SimpleDateFormat myFormat = new SimpleDateFormat("yyyy-MM-dd 23:59:59");
String mystrdate = myFormat.format(calendar.getTime());
return Timestamp.valueOf(mystrdate);
}
/**
* 字符串日期加n天
*
* @param date 日期
* @param days 加的天数
* @param dateFormat 字符串日期格式
* @return
*/
public static String addDay(String date, int days, String dateFormat) {
if (dateFormat == null || "".equals(dateFormat)) {
dateFormat = "yyyyMMdd";
}
try {
SimpleDateFormat formatter = new SimpleDateFormat(dateFormat);
Calendar cd = Calendar.getInstance();
cd.setTime(formatter.parse(date));
cd.add(Calendar.DATE, days);
return formatter.format(cd.getTime());
} catch (Exception e) {
return null;
}
}
/**
* 计算两个字符串的时间相差的时间
*
* @param args
* @return
*/
public static Long getDayNum(String beforeDate, String afterDate) {
SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd");
long result = 0;
try {
long to = df.parse(afterDate).getTime();
long from = df.parse(beforeDate).getTime();
result = (to - from) / (1000 * 60 * 60 * 24);
} catch (ParseException e) {
e.printStackTrace();
}
return result;
}
/**
* 计算日期两个差的月份
*
* @param beforeDate 格式 yyyyMM
* @param afterDate 格式 yyyyMM
* @return
*/
public static int getMonthNum(String beforeDate, String afterDate) {
int yearNum = Integer.parseInt(afterDate.substring(0, 4))
- Integer.parseInt(beforeDate.substring(0, 4));
int resultMonthNum = 0;
if (yearNum > 0) {
resultMonthNum = Integer.parseInt(afterDate.substring(4)) +
(12 - Integer.parseInt(beforeDate.substring(4))) + 12 * (yearNum - 1);
} else if (yearNum == 0) {
resultMonthNum = Integer.parseInt(afterDate.substring(4))
- Integer.parseInt(beforeDate.substring(4));
}
return resultMonthNum;
}
/**
* 计算两个字符串的时间相差多少秒
*
* @param beforeDate 格式 yyyyMMddHHmmss
* @param afterDate 格式 yyyyMMddHHmmss
* @return
*/
public static Long getSecondNum(String beforeDate, String afterDate) {
SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
long result = 0;
try {
long to = df.parse(afterDate).getTime();
long from = df.parse(beforeDate).getTime();
result = (to - from) / (1000);
} catch (ParseException e) {
e.printStackTrace();
}
return result;
}
}
