获得一周周一和周日时间

最新推荐文章于 2018-09-05 22:07:11 发布

雪荠

最新推荐文章于 2018-09-05 22:07:11 发布

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分类专栏： JAVA

本文链接：https://blog.youkuaiyun.com/dengshusheng2/article/details/80178579

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本文介绍了一种使用Java编程语言中的Calendar类来获取当前周的周一和周日日期的方法。通过调整Calendar实例的日期，可以准确地获得每周的起始和结束日期，并以“yyyy-MM-dd”格式返回。

/**

* 得到本周周一 * * @return yyyy-MM-dd

*/ public static String getMondayOfThisWeek()

{ Calendar c = Calendar.getInstance();

int day_of_week = c.get(Calendar.DAY_OF_WEEK) - 1;

if (day_of_week == 0)

day_of_week = 7;

c.add(Calendar.DATE, -day_of_week + 1);

return df2.format(c.getTime());

}

/** * 得到本周周日

* *

@return yyyy-MM-dd

public static String getSundayOfThisWeek()

{

Calendar c = Calendar.getInstance();

int day_of_week = c.get(Calendar.DAY_OF_WEEK) - 1;

if (day_of_week == 0)

day_of_week = 7;

c.add(Calendar.DATE, -day_of_week + 7);

return df2.format(c.getTime());

}

// 周一开始时间

beginPublishCalendar.setFirstDayOfWeek(Calendar.MONDAY);
beginPublishCalendar.set(Calendar.DAY_OF_WEEK, beginPublishCalendar.getFirstDayOfWeek());
beginPublishCalendar.set(Calendar.HOUR_OF_DAY, 0);
beginPublishCalendar.set(Calendar.MINUTE, 0);

beginPublishCalendar.set(Calendar.SECOND, 0);

// 周日截止时间
beginPublishCalendar.set(Calendar.YEAR, year);
beginPublishCalendar.setFirstDayOfWeek(Calendar.MONDAY);
beginPublishCalendar.set(Calendar.DAY_OF_MONTH, beginPublishCalendar.get(Calendar.DAY_OF_MONTH) + 6);
beginPublishCalendar.set(Calendar.HOUR_OF_DAY, hour);
beginPublishCalendar.set(Calendar.MINUTE, minute);

beginPublishCalendar.set(Calendar.SECOND, 59);

beginPublishCalendar 设置时间如果用两个变量会从当前月份开始算总共的日期，如4月份Calendar.DAY_OF_MONTH加36则到5月6。