JAVA时间日期处理类，主要用来遍历两个日期之间的每一天

import java.text.decimalformat;
import java.text.parseexception;
import java.text.simpledateformat;
import java.util.arraylist;
import java.util.date;
import java.util.list;

/**
* 遍历两个时间段中间的每一天
* @author 天涯鬼域
* 2019.01.30
*/
public class accountdate {

private static transient int gregoriancutoveryear = 1582;

/** 闰年中每月天数 */
private static final int[] days_p_month_ly= {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

/** 非闰年中每月天数 */
private static final int[] days_p_month_cy= {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

/** 代表数组里的年、月、日 */
private static final int y = 0, m = 1, d = 2;

/**
* 将代表日期的字符串分割为代表年月日的整形数组
* @param date
* @return
*/
public static int[] splitymd(string date){
date = date.replace("-", "");
int[] ymd = {0, 0, 0};
ymd[y] = integer.parseint(date.substring(0, 4));
ymd[m] = integer.parseint(date.substring(4, 6));
ymd[d] = integer.parseint(date.substring(6, 8));
return ymd;
}

/**
* 检查传入的参数代表的年份是否为闰年
* @param year
* @return
*/
public static boolean isleapyear(int year) {
return year >= gregoriancutoveryear ?
((year%4 == 0) && ((year%100 != 0) || (year%400 == 0))) : (year%4 == 0);
}

/**
* 日期加1天
* @param year
* @param month
* @param day
* @return
*/
private static int[] addoneday(int year, int month, int day){
if(isleapyear( year )){
day++;
if( day > days_p_month_ly[month -1 ] ){
month++;
if(month > 12){
year++;
month = 1;
}
day = 1;
}
}else{
day++;
if( day > days_p_month_cy[month -1 ] ){
month++;
if(month > 12){
year++;
month = 1;
}
day = 1;
}
}
int[] ymd = {year, month, day};
return ymd;
}

/**
* 将不足两位的月份或日期补足为两位
* @param decimal
* @return
*/
public static string formatmonthday(int decimal){
decimalformat df = new decimalformat("00");
return df.format( decimal );
}

/**
* 将不足四位的年份补足为四位
* @param decimal
* @return
*/
public static string formatyear(int decimal){
decimalformat df = new decimalformat("0000");
return df.format( decimal );
}

/**
* 计算两个日期之间相隔的天数
* @param begin
* @param end
* @return
* @throws parseexception
*/
public static long countday(string begin,string end){
simpledateformat format = new simpledateformat("yyyy-mm-dd");
date begindate , enddate;
long day = 0;
try {
begindate= format.parse(begin);
enddate= format.parse(end);
day=(enddate.gettime()-begindate.gettime())/(24*60*60*1000);
} catch (parseexception e) {
e.printstacktrace();
}
return day;
}

/**
* 以循环的方式计算日期
* @param begindate enddate
* @param days
* @return
*/
public static list<string> geteveryday(string begindate , string enddate){
long days = countday(begindate, enddate);
int[] ymd = splitymd( begindate );
list<string> everydays = new arraylist<string>();
everydays.add(begindate);
for(int i = 0; i < days; i++){
ymd = addoneday(ymd[y], ymd[m], ymd[d]);
everydays.add(formatyear(ymd[y])+"-"+formatmonthday(ymd[m])+"-"+formatmonthday(ymd[d]));
}
return everydays;
}

public static void main(string[] args) {
list<string> list = accountdate.geteveryday("2008-08-29", "2008-09-02");
for (string result : list) {
system.out.println(result);
}
}
}