java Date与 double 互转

/**
     * 时间转double
     * @param date
     * @return 返回值类似：43322.3770190278
     */
    public static double Date2Double(Date date){
		@SuppressWarnings("deprecation")
		long localOffset  = date.getTimezoneOffset()*60000;
		double dd = (double)(date.getTime()-localOffset)/ 24 / 3600 / 1000 + 25569.0000000;
		DecimalFormat df = new DecimalFormat("#.0000000000");//先默认保留10位小数
		
		return Double.valueOf(df.format(dd));
    }

 /**
     * double 转  Date 时间
     * @param dVal
     */
    public static Date DoubleToDate(Double dVal){
    	Date oDate = new Date();
        @SuppressWarnings("deprecation")
		long localOffset = oDate.getTimezoneOffset() * 60000; //系统时区偏移 1900/1/1 到 1970/1/1 的 25569 天
        oDate.setTime((long) ((dVal - 25569) * 24 * 3600 * 1000 + localOffset));
        
        return oDate;
	}