Java:列出开始日期和结束日期之间的日期 [英] Java: List the dates between a start and end date

问题描述

我正在尝试输入开始日期，结束日期，并获取介于两者之间的所有日期.我有需要的格式，已经准备好 Joda-Time . ..过去，我被困住了.我已经包括了我正在做的事情，以及不做的事情.

I'm trying to enter a start date, an end date, and obtain all the dates in between. I have the formatting where I need it, I have Joda-Time ready to go, but...past that, I'm stuck. I've included what I have working, as well as what is not going.

到目前为止，我有以下代码(有效):

So far, I have the following code (working):

DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
DateFormat sysDate = new SimpleDateFormat("ddMMyyyy");

//Get Start Date
Date str_date = jXDatePicker1.getDate();
jXDatePicker1.setFormats(dateFormat);
String startDate = sysDate.format(jXDatePicker1.getDate());

//Get End Date
Date end_date = jXDatePicker2.getDate();
jXDatePicker2.setFormats(dateFormat);
String endDate = sysDate.format(jXDatePicker2.getDate());

这是我要实现的目标，但没有成功:

And here's what I'm trying to implement but to no success:

List<LocalDate> dates = new ArrayList<LocalDate>();
int days = Days.daysBetween(startDate, endDate).getDays();
for (int i=0; i < days; i++) {
    LocalDate d = startDate.withFieldAdded(DurationFieldType.days(), i);
    dates.add(d);
}

先谢谢您.

推荐答案

我不确定int days = Days.daysBetween(startDate, endDate).getDays();是否可以工作，假设startDate和endDate仍然是String s

I'm not sure if int days = Days.daysBetween(startDate, endDate).getDays(); will work, assuming the startDate and endDate are still Strings

相反，您应该改用str_date和end_date值，也许更像是...

Instead, you should use the str_date and end_date values instead, maybe something more like...

int days = Days.daysBetween(new LocalDate(str_date), new LocalDate(end_date)).getDays();
System.out.println(days);

尝试并记住，通常日期/时间的格式"是无关紧要的，相反，您想使用(日期/时间的)实际值，并且需要显示时，然后根据需要进行格式化

Try and remember, in general the "format" of the date/time is irrelevant, instead, you want to work with the actual values (of the date/time) and when you need to display, then format then as required

通常我只是在日期早于结束日期时不断循环播放，就像...

Normally I just keep looping while the date is before the end date, something like...

Random rnd = new Random();
LocalDate start = new LocalDate(2015, DateTimeConstants.SEPTEMBER, 1);
LocalDate end = start.plusDays(rnd.nextInt(200));

List<LocalDate> dates = new ArrayList<>(25);
dates.add(start);
while (start.isBefore(end)) {
    start = start.plusDays(1);
    dates.add(start);
}

for (LocalDate date : dates) {
    System.out.println(date);
}

从开始日期到结束日期，这是一个包容性，并且本示例仅生成从开始日期到未来随机天数的日期列表

This is inclusive, from the start date to the end date and this example simply generates a list of dates from the start date to a random number of days in the future

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