日期转换-面板2

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.HashMap;
import java.util.Map;

public class DatapanelUtil
{
    /**
     * 当前时间戳 所在的年周
     * @param data
     * @return 20191  201923
     * @see [类、类#方法、类#成员]
     */
    public static Long getCurrentWeek(Long data)
    {
        Calendar c = Calendar.getInstance();
        c.setTime(new Date(data));
        c.add(3, 0 * -1);
        Date d = c.getTime();
        c = Calendar.getInstance();
        c.setTime(d);
        return Long.parseLong(c.get(Calendar.YEAR) + "" + c.get(Calendar.WEEK_OF_YEAR));
    }
    
    /**
     * 初始化统计数据
     * @param indoorSubRunReq
     * @see [类、类#方法、类#成员]
     */
    public static Map<String, Integer> getBaseTimeData(Long finishTime)
        throws Exception
    {
        Map<String, Integer> paramMap = new HashMap<String, Integer>();
        String finishTempTime = stampToDate(finishTime);
        String[] timeArray = finishTempTime.substring(0, 10).split("-");
        paramMap.put("year", Integer.parseInt(timeArray[0]));
        paramMap.put("month", Integer.parseInt(timeArray[1]));
        paramMap.put("day", Integer.parseInt(timeArray[2]));
        return paramMap;
    }
    
    /**
     * 时间戳转换为时间
     * @param s
     * @return
     * @see [类、类#方法、类#成员]
     */
    private static String stampToDate(Long s)
    {
        String res;
        if (String.valueOf(s).length() == 10)
        {
            s *= 10;
        }
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = new Date(s);
        res = simpleDateFormat.format(date);
        return res;
    }
    
    /**
     * string转换时间
     * @param dateString
     * @return
     * @throws Exception
     * @see [类、类#方法、类#成员]
     */
    private static Date stringToDate(String dateString)
        throws Exception
    {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = sdf.parse(dateString);
        return date;
    }
    
    /**
     * 获取时间所在周
     * <一句话功能简述>
     * <功能详细描述>
     * @param finishDate
     * @return
     * @see [类、类#方法、类#成员]
     */
    public static String getWeekByTime(Date finishDate)
    {
        Calendar c = Calendar.getInstance();
        c.setTime(finishDate);
        SimpleDateFormat sdf = new SimpleDateFormat("ww");
        if (c.get(Calendar.DAY_OF_WEEK) == 1)
        {
            c.add(Calendar.WEEK_OF_YEAR, -2);
        }
        else
        {
            c.add(Calendar.WEEK_OF_YEAR, -1);
        }
        return sdf.format(c.getTime());
    }
    
    /**
     * 
     * 当前时间，周第一天和最后一天 
     * 对应的日期
     * @param falg
     *            true:第一天 ；false:最后一天
     * @return date
     * @throws Exception 
     * @see [类、类#方法、类#成员]
     */
    public static Long getDayNum(boolean falg, Long dateTime)
        throws Exception
    {
        Calendar c = Calendar.getInstance();
        c.setFirstDayOfWeek(Calendar.SUNDAY);
        if (falg)
        {
            c.setTime(new Date(dateTime));
            c.set(Calendar.HOUR_OF_DAY, 0);
            c.set(Calendar.MINUTE, 0);
            c.set(Calendar.SECOND, 0);
            c.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);// 获取本周一的日期
        }
        else
        {
            c.setTime(new Date(dateTime + 7 * 24 * 60 * 60 * 1000));
            c.set(Calendar.HOUR_OF_DAY, 23);
            c.set(Calendar.MINUTE, 59);
            c.set(Calendar.SECOND, 59);
            c.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);// 获取本周日的日期
        }
        String finishTempTime = stampToDate(c.getTime().getTime());
        String[] timeArray = finishTempTime.substring(0, 10).split("-");
        // return c.getTime().getTime();
        return Long.parseLong(timeArray[2]);
    }
    
    /**
     * 
     * 根据当前时间计算每周的天数 <功能详细描述>
     * 
     * @param date
     * @param num
     *            本周为0 上周为1 依次类推
     * @return
     * @see [类、类#方法、类#成员]
     */
    public static String getWeekDay(Date date, Integer num)
    {
        num = num == null ? 0 : num;
        Calendar c = Calendar.getInstance();
        c.setFirstDayOfWeek(Calendar.SUNDAY);
        c.setTime(date);
        c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek());
        c.add(Calendar.DAY_OF_MONTH, num);
        int mt = (c.get(Calendar.MONTH) + 1);
        int dt = c.get(Calendar.DAY_OF_MONTH);
        return c.get(Calendar.YEAR) + "" + (mt <= 9 ? ("0" + mt) : (mt + "")) + "" + (dt <= 9 ? ("0" + dt) : (dt + ""));
    }
    
    /**
     * 获取日期当前月初，月末YMD
     * @param b  true  月初  false 月末
     * @param dateTime
     * @return
     * @see [类、类#方法、类#成员]
     */
    public static Long getYMDMonth(Boolean b, Long dateTime)
    {
        // 获取当月第一天和最后一天
        SimpleDateFormat format = new SimpleDateFormat("yyyyMMdd");
        Long ymd;
        Calendar cale = Calendar.getInstance();
        cale.setTime(new Date(dateTime));
        if (b)
        {
            // 获取前月的第一天
            cale.add(Calendar.MONTH, 0);
            cale.set(Calendar.DAY_OF_MONTH, 1);
            ymd = Long.parseLong(format.format(cale.getTime()));
        }
        else
        {
            // 获取前月的最后一天
            cale.add(Calendar.MONTH, 1);
            cale.set(Calendar.DAY_OF_MONTH, 0);
            ymd = Long.parseLong(format.format(cale.getTime()));
        }
        return ymd;
    }
    
    /**
     * 是否为7天外数据
     * 
     * @param dateTime 13位时间戳
     * @return
     */
    public static boolean isNotTimeThenSeven(Long dateTime)
    {
        int temp = 7 * 24 * 60 * 60 * 1000;
        if (dateTime + temp > System.currentTimeMillis())
        {
            return false;
        }
        return true;
    }

    /**
     * @Title: getYmdBeforeToday
     * @Description: 获取n天前的ymd时间
     * @return: Long
     */
    public static Long getYmdBeforeToday(int n)
    {
        SimpleDateFormat formater = new SimpleDateFormat("yyyyMMdd");
        Date date = new Date();
        Calendar calendar = new GregorianCalendar();
        calendar.setTime(date);
        // 把日期推前一天.
        calendar.add(Calendar.DATE, - n);
        date = calendar.getTime();
        return Long.valueOf(formater.format(date));
    }
}