/**

    * @Description: 当前日期加上n个月返回long date

     */

    public static long getLongDateAddMonth(int n){

        Calendar cd=Calendar.getInstance();

        Date date=new Date();

        cd.setTime(date);

        cd.add(Calendar.MONTH, n); //将当前日期加n个月

        return cd.getTime().getTime();

    }

    /**

     * @Description 当前日期加上n天返回long date*/

    public static long getLongDateAddDay(int n){

        Calendar cd = Calendar.getInstance();

        Date date = new Date();

        cd.setTime(date);

        cd.add(Calendar.DAY_OF_MONTH, n);

        return cd.getTime().getTime();

    }