Calendar使用实例.

最新推荐文章于 2023-07-08 11:35:22 发布

BrandoLv

最新推荐文章于 2023-07-08 11:35:22 发布

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分类专栏： Java 文章标签： calendar string exception 日历 date

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本文提供了一系列日期操作的方法，包括获取指定月份的起始与结束时间、上周或特定周的日期范围、昨天及今天的起止时间等。这些方法适用于多种场景，如数据统计、日志分析等。

    /**
     * 获取某年某月某日从开始到当天结束的时间  参数number 0.本月, 1.上月, 2.上上月. 类推.当前日期减月分基数.
      *<功能简述>
      *<功能详细描述>
      * @return [参数说明]
      * @return String [返回类型说明]
      * @exception throws [异常类型] [异常说明]
      * @see [类、类#方法、类#成员]
     */
     private String lastMonthSetYearMonthDay(int year,int month,int day, int number){
        Calendar calendar = Calendar.getInstance();//创建日历对象
        calendar.set(year, month-1, day - number, 0, 0, 0);
        //把日期转换为String.
        String endTimeDate = TimeTools.getString(calendar.getTime());
        String beginTime = endTimeDate + " 00:00:00";
        String endTime = endTimeDate + " 23:59:59";
        return beginTime+","+endTime;
    }
    
     /**
      * 获取上周第一天到上周最后一天的日期(带时间),传入参数.0为上周,1为上上周.
       *<功能简述>
       *<功能详细描述>
       * @return [参数说明]
       * @return String [返回类型说明]
       * @exception throws [异常类型] [异常说明]
       * @see [类、类#方法、类#成员]
      */
     private String lastWeekToLastDayLastWeek(int number){
         //创建日历对象
         Calendar calendar = Calendar.getInstance();
         // 取得本周一
         calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
         calendar.setFirstDayOfWeek(Calendar.MONDAY);
         calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
         //取得上周日时间
         String endDate = TimeTools.getString(new Date(calendar.getTime().getTime() - (number*(7 * 24 * 60 * 60 * 1000) + (24 * 60 * 60 * 1000))));
         //取得上周一日期
         String beginDate = TimeTools.getString(new Date(calendar.getTime().getTime() - (number*(7 * 24 * 60 * 60 * 1000) + (7 * 24 * 60 * 60 * 1000))));
         //取得开始时间.
         String beginTime = beginDate + " 00:00:00";
         String endTime = endDate + " 23:59:59";
         return beginTime+","+endTime;
     }
     
    /**
     * 获取某年某月从开始到当月结束的时间  参数number 0.本月, 1.上月, 2.上上月. 类推.当前日期减月分基数.
      *<功能简述>
      *<功能详细描述>
      * @return [参数说明]
      * @return String [返回类型说明]
      * @exception throws [异常类型] [异常说明]
      * @see [类、类#方法、类#成员]
     */
     private String lastMonthSetYearMonth(int year,int month,int number){
        //创建日历对象
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.YEAR, year);
        calendar.set(Calendar.MONTH, month - number);
        //设计日期为本月第一天.
        calendar.set(Calendar.DAY_OF_MONTH,calendar.getActualMinimum(Calendar.DAY_OF_MONTH)-1);
        //把日期转换为String.
        String endTimeDate = TimeTools.getString(calendar.getTime());
        String endTime = endTimeDate + " 23:59:59";
        //获取本月开始时间.
        String beginTime = endTimeDate.substring(0,endTimeDate.lastIndexOf("-")) + "-01 00:00:00";
        return beginTime+","+endTime;
    }
     
     /**
      * 获取昨天开始时间到最后结束时间 参数为0, 为今天0, 1为昨天. 类推.当前日期减月分基数
       *<功能简述>
       *<功能详细描述>
       * @return [参数说明]
       * @return String [返回类型说明]
       * @exception throws [异常类型] [异常说明]
       * @see [类、类#方法、类#成员]
      */
     private String laseDayFristTimeAndEndTime(int number){
         Calendar calendar = Calendar.getInstance();
         calendar.set(Calendar.DAY_OF_MONTH,calendar.get(Calendar.DAY_OF_MONTH) - number);
         //或取当前时间
         String DateTime = TimeTools.getString(calendar.getTime());
         String beginTime = DateTime + " 00:00:00";
         String endTime = DateTime + " 23:59:59";
         return beginTime+","+endTime;
     }
     
    /**
     * 获取上个月第一天到最后一天的日期(带时间) 参数为0, 为上一月, 1为上上月. 类推.当前日期减月分基数.
      *<功能简述>
      *<功能详细描述>
      * @return [参数说明]
      * @return String [返回类型说明]
      * @exception throws [异常类型] [异常说明]
      * @see [类、类#方法、类#成员]
     */
     private String lastMonth(int number){
        //创建日历对象
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.MONTH, calendar.get(Calendar.MONTH) - number);
        //设计日期为本月第一天.
        calendar.set(Calendar.DAY_OF_MONTH,calendar.getActualMinimum(Calendar.DAY_OF_MONTH)-1);
        //把日期转换为String.
        String endTimeDate = TimeTools.getString(calendar.getTime());
        String endTime = endTimeDate + " 23:59:59";
        //获取本月开始时间.
        String beginTime = endTimeDate.substring(0,endTimeDate.lastIndexOf("-")) + "-01 00:00:00";
        return beginTime + "," + endTime;
    }
    
    /**
     * 获取上周第一天到上周最后一天的日期(带时间)
      *<功能简述>
      *<功能详细描述>
      * @return [参数说明]
      * @return String [返回类型说明]
      * @exception throws [异常类型] [异常说明]
      * @see [类、类#方法、类#成员]
     */
    private String lastWeekToLastDayLastWeek(){
        //创建日历对象
        Calendar calendar = Calendar.getInstance();
        // 取得本周一
        calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        calendar.setFirstDayOfWeek(Calendar.MONDAY);
        calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
        //取得上周日时间
        String endDate = TimeTools.getString(new Date(calendar.getTime().getTime() - (24 * 60 * 60 * 1000)));
        //取得上周一日期
        String beginDate = TimeTools.getString(new Date(calendar.getTime().getTime() - (7 * 24 * 60 * 60 * 1000)));
        //取得开始时间.
        String beginTime = beginDate + " 00:00:00";
        String endTime = endDate + " 23:59:59";
        //把日期转换为String.
        return beginTime+","+endTime;
    }
    
    /**
     * 获取今天开始时间到最后结束时间
      *<功能简述>
      *<功能详细描述>
      * @return [参数说明]
      * @return String [返回类型说明]
      * @exception throws [异常类型] [异常说明]
      * @see [类、类#方法、类#成员]
     */
    private String thisDayFristTimeAndEndTime(){
        Calendar calendar = Calendar.getInstance();
        //或取当前时间
        String DateTime = TimeTools.getString(calendar.getTime());
        String beginTime = DateTime + " 00:00:00";
        String endTime = DateTime + " 23:59:59";
        return beginTime+","+endTime;
    }
    
    /**
     * 获取昨天开始时间到最后结束时间
      *<功能简述>
      *<功能详细描述>
      * @return [参数说明]
      * @return String [返回类型说明]
      * @exception throws [异常类型] [异常说明]
      * @see [类、类#方法、类#成员]
     */
    private String laseDayFristTimeAndEndTime(){
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.DAY_OF_MONTH,calendar.get(Calendar.DAY_OF_MONTH)-1);
        //或取当前时间
        String DateTime = TimeTools.getString(calendar.getTime());
        String beginTime = DateTime + " 00:00:00";
        String endTime = DateTime + " 23:59:59";
        return beginTime+","+endTime;
    }
    
    /**
     * 获取上月一号到上月最后一天的日期(带时间)
      *<功能简述>
      *<功能详细描述>
      * @return [参数说明]
      * @return String [返回类型说明]
      * @exception throws [异常类型] [异常说明]
      * @see [类、类#方法、类#成员]
     */
    private String lastMonthToLastDay(){
        Calendar calendar = Calendar.getInstance();
        //设计日期为本月第一天.
        calendar.set(Calendar.DAY_OF_MONTH,calendar.getActualMinimum(Calendar.DAY_OF_MONTH)-1);
        //把日期转换为String.
        String endTimeDate = TimeTools.getString(calendar.getTime());
        String endTime = endTimeDate + " 23:59:59";
        //获取本月开始时间.
        String beginTime = endTimeDate.substring(0,endTimeDate.lastIndexOf("-")) + "-01 00:00:00";
        return beginTime+","+endTime;
    }
 
    /**
     * 获取本月一号到当天的日期(带时间)
      *<功能简述>
      *<功能详细描述>
      * @return [参数说明]
      * @return String [返回类型说明]
      * @exception throws [异常类型] [异常说明]
      * @see [类、类#方法、类#成员]
     */
    private String thisMonthToLastDay(){
        //创建日历对象
        Calendar calendar = Calendar.getInstance();
        //设计日期为本月最后一天.
        calendar.set(Calendar.DAY_OF_MONTH,calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
        //把日期转换为String.
        String endTimeDate = TimeTools.getString(calendar.getTime());
        String beginTime = endTimeDate + " 00:00:00";
        String endTime = TimeTools.now() + " 23:59:59";
        return beginTime+","+endTime;
    }
    
    /**
     * 获取本周第一天到本周最后一天的日期(带时间)
      *<功能简述>
      *<功能详细描述>
      * @return [参数说明]
      * @return String [返回类型说明]
      * @exception throws [异常类型] [异常说明]
      * @see [类、类#方法、类#成员]
     */
    private String thisWeekToThisWeekLastDay(){
        Calendar calendar = Calendar.getInstance();
        // 取得本周一
        calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        calendar.setFirstDayOfWeek(Calendar.MONDAY);
        calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
        String beginDate = TimeTools.getString(calendar.getTime());
        // 取得本周日
        String endDate = TimeTools.getString(new Date(calendar.getTime().getTime() + (6 * 24 * 60 * 60 * 1000)));
        //取得开始时间.
        String beginTime = beginDate + " 00:00:00";
        String endTime = endDate + " 23:59:59";
        return beginTime+","+endTime;
    }

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
    /**
     * 从2011年9月2日9点.每过15分种输出一次时间
      *<功能简述>
      *<功能详细描述>
      * @return String [返回类型说明]
      * @exception throws [异常类型] [异常说明]
      * @see [类、类#方法、类#成员]
     */
public class DateTest {
	public static void main(String[] args) {
		 Calendar calendar = Calendar.getInstance();//创建日历对象  
		 calendar.set(2011, 10, 2, 9, 30, 0);	//设置时间.
		 while(System.currentTimeMillis() >= calendar.getTimeInMillis()){
			 //设置时间.												15分钟.
			 calendar.setTimeInMillis(calendar.getTimeInMillis() + (1000 * 60 * 15));
			 String time = getString(calendar.getTime());
			 System.out.println(time);
		 }
	}
	
    public static String getString(Date date) {
        String dateString = "";
        if (date == null){
            return dateString;
        }
        try {
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            dateString = df.format(date);
        } catch (Exception e) {
            dateString = "";
        }
        return dateString;
    }
}