package com.jqmobile.core.utils.plain;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
/**
*
* @author modi
*
*/
public final class DateUtils {
/**
* 一天的毫秒数
*/
public static final long ONE_HOUR_TIME = 60*60*1000l;
public static final long ONE_DATE_TIME = 24*ONE_HOUR_TIME;
private static final long OneDateSub = 8*60*60*1000l;
/**
* 一周的毫秒数
*/
public static final long ONE_WEEK_TIME = 7*ONE_DATE_TIME;
public static final long OneMonthEmpty30 = 30*ONE_DATE_TIME;
public static final long OneMonthEmpty31 = 31*ONE_DATE_TIME;
public static final long OneMonthEmpty29 = 29*ONE_DATE_TIME;
public static final long OneMonthEmpty28 = 28*ONE_DATE_TIME;
private static final String defaultSDFStr = "yyyy-MM-dd HH:mm:ss.SSS";
private static final SimpleDateFormat DefaultSDF = new SimpleDateFormat(defaultSDFStr);
// private static final Calendar defaultCal = Calendar.getInstance(Locale.CHINESE);
public static void main(String[] args) {
System.out.println("day start:"+getDateString(getDayStartTime()));
System.out.println("day end:"+getDateString(getDayEndTime()));
System.out.println("week start:"+getDateString(getWeekStartTime()));
System.out.println("Month start:"+getDateString(getMonthStartTime()));
System.out.println("month:"+getMonth());
System.out.println("week:"+getWeek(System.currentTimeMillis()));
System.out.println("year:"+getYear(System.currentTimeMillis()));
System.out.println("lunar:"+getDateString(getLunarCalendar(System.currentTimeMillis())));
}
/**
* 本月开始时间
* @return
*/
public static long getMonthStartTime(){
return getMonthStartTime(System.currentTimeMillis());
}
/**
* 获得前3个月第一天的开始时间
* 例： 当前是10月，那么返回的是8月1号0点的时间
* @return
*/
public static long getThreeMonthStartTime(){
Calendar cal =Calendar.getInstance();
cal.add(Calendar.MONTH, -2);
cal.set(Calendar.DATE, 1);
return getDayStartTime(cal.getTimeInMillis());
}
/**
* 本周开始时间
* @return
*/
public static long getWeekStartTime(){
return getWeekStartTime(System.currentTimeMillis());
}
/**
* 月开始时间
* @return
*/
public static long getMonthStartTime(long l){
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(l);
cal.set(Calendar.DATE, 1);
return getDayStartTime(cal.getTime().getTime());
}
/**
* 周开始时间
* @return
*/
public static long getWeekStartTime(long l){
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(l);
cal.set(Calendar.DAY_OF_WEEK, 2);
if(7 == getWeek(l)) return getDayStartTime(cal.getTime().getTime())-ONE_WEEK_TIME;
else return getDayStartTime(cal.getTime().getTime());
}
/**
* 当前月份
* @return
*/
public static int getMonth(){
return getMonth(System.currentTimeMillis());
}
/**
* 当前年份
* @param l
* @return
*/
public static int getYear(){
return getYear(System.currentTimeMillis());
}
/**
* 当前星期数
* @return
*/
public static int getWeek(){
return getWeek(System.currentTimeMillis());
}
/**
* 月份
* @param l
* @return
*/
public static int getMonth(long l){
Calendar cal = Calendar.getInstance(Locale.CHINESE);
cal.setTimeInMillis(l);
return cal.get(Calendar.MONTH)+1;
}
/**
* 年份
* @param l
* @return
*/
public static int getYear(long l){
Calendar cal = Calendar.getInstance(Locale.CHINESE);
cal.setTimeInMillis(l);
return cal.get(Calendar.YEAR);
}
/**
* 日期
* @param l
* @return
*/
public static int getDay(long l){
Calendar cal = Calendar.getInstance(Locale.CHINESE);
cal.setTimeInMillis(l);
return cal.get(Calendar.DAY_OF_MONTH);
}
/**
* 天（年）
* @param l
* @return
*/
public static int getDayByYear(long l){
Calendar cal = Calendar.getInstance(Locale.CHINESE);
cal.setTimeInMillis(l);
return cal.get(Calendar.DAY_OF_YEAR);
}
/**
* 是否月末（比较到日期）
* @param l
* @return
*/
public static boolean isMouthEnd(long l){
int month = getMonth(l);
int day = getDay(l);
if(isIntIn(month, 1,3,5,7,8,10,12)){
if(31 == day){
return true;
}
}
else if(isIntIn(month, 4,6,9,11)){
if(30 == day){
return true;
}
}
else if(isLeapYear(l)){
return 29 == day;
}
else{
return 28 == day;
}
return false;
}
private static boolean isIntIn(int thisInt, int... is){
if(null == is){
return false;
}
for(int i : is){
if(thisInt == i){
return true;
}
}
return false;
}
/**
* 是否是闰年
* @return
*/
public static boolean isLeapYear(long l){
int year = getYear(l);
return 0==year%4 || 0==year%100 || 0==year%400;
}
/**
* 是否年末
* @param l
* @return
*/
public static boolean isYearEnd(long l){
Calendar cal = Calendar.getInstance(Locale.CHINESE);
cal.setTimeInMillis(l);
int day = cal.get(Calendar.DAY_OF_YEAR);
if(isLeapYear(l)){
return 366 == day;
}else{
return 365 == day;
}
}
/**
* 星期数
* @param l
* @return
*/
public static int getWeek(long l){
Calendar cal = Calendar.getInstance(Locale.CHINESE);
cal.setTimeInMillis(l);
int week = cal.get(Calendar.DAY_OF_WEEK)-1;
return week==0?7:week;
}
/**
* 当天开始时间0:00:00:000
* @return
*/
public static long getDayStartTime(){
return (System.currentTimeMillis()/ONE_DATE_TIME)*ONE_DATE_TIME - OneDateSub;
}
/**
* 当天结束时间23:59:59:999
* @return
*/
public static long getDayEndTime(){
return getDayStartTime()+ONE_DATE_TIME-1l;
}
/**
* 当天开始时间0:00:00:000
* @return
*/
public static long getDayStartTime(long l){
return (l/ONE_DATE_TIME)*ONE_DATE_TIME - OneDateSub;
}
/**
* 当天结束时间23:59:59:999
* @return
*/
public static long getDayEndTime(long l){
return getDayStartTime(l)+ONE_DATE_TIME-1l;
}
/**
* 获得时间字符串。默认"yyyy-MM-dd"
* @param l
* @return
*/
public static String getDateString(long l){
return DefaultSDF.format(new Date(l));
}
/**
* 获得时间字符串。默认"yyyy-MM-dd"
* @param l
* @param dateFormat
* @return
*/
public static String getDateString(long l, String dateFormat){
return new SimpleDateFormat(dateFormat==null?defaultSDFStr:dateFormat).format(new Date(l));
}
public static long getDate(String str, String dateFormat){
SimpleDateFormat sdf = new SimpleDateFormat(dateFormat);
try {
return sdf.parse(str).getTime();
} catch (ParseException e) {
return 0;
}
}
/**
* 天数差
* @param startTime 初始时间
* @param endTime 结束时间
* @param haveHour 是否有让时间参与计算。默认false。只记天数差。
* @return
*/
public static int subDay(long startTime, long endTime){
return subDay(startTime, endTime, false);
}
/**
* 天数差
* @param startTime 初始时间
* @param endTime 结束时间
* @param haveHour 是否有让时间参与计算。默认false。只记天数差。
* @return
*/
public static int subDay(long startTime, long endTime, boolean haveHour){
long subTime;
if(haveHour){
subTime = endTime - startTime;
}
else{
subTime = getDayStartTime(endTime)-getDayStartTime(startTime);
}
return (int) (subTime/ONE_DATE_TIME);
}
/**
* 与当前日期天数差 endTime-this
* @param endTime 结束时间
* @param haveHour 是否有让时间参与计算。false,只记天数差。
* @return
*/
public static int subDay(long endTime, boolean haveHour){
return subDay(System.currentTimeMillis(), endTime, haveHour);
}
/**
* 获得中国阴历时间(此方法当前错误，待修改)
* @param solar
* @return
*/
@Deprecated
public static long getLunarCalendar(long solar){
return solar;
}
/**
* 字符串转换为long
* @param date
* @return
*/
public static long convert2long(String date) {
if (date != null) {
// 长日期格式
String TIME_FORMAT = "yyyy-MM-dd";
try {
SimpleDateFormat sf = new SimpleDateFormat(TIME_FORMAT);
return sf.parse(date).getTime();
} catch (ParseException e) {
e.printStackTrace();
}
}
return 0l;
}
}