获取上一年时间

/**
     * 获取上一年时间.
     *
     * @param dealDate 待处理时间
     * @return str
     */
    private String getLastYearTime(String dealDate) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = null;
        try {
            date = sdf.parse(dealDate);
        } catch (ParseException e) {
            LOGGER.error(e.getMessage(), e);
        }
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.YEAR, -1);
        return sdf.format(calendar.getTime());
    }