/**
	 * 是不是真
	 * 
	 * @param keys
	 * @param map
	 * @return
	 * @throws Exception
	 */
	private static Boolean isTrue(String[] keys, Map<String, Object> map) throws Exception {
		if (keys.length == 0) {
			String constant = null;
			if ((constant = isConstant(keys[0])) != null) {
				return Boolean.valueOf(constant);
			}
			return Boolean.valueOf(PoiPublicUtil.getParamsValue(keys[0], map).toString());
		}
		if (keys.length == 3) {
			Object first = eval(keys[0], map);
			Object second = eval(keys[2], map);
			return PoiFunctionUtil.isTrue(first, keys[1], second);
		}
		throw new ExcelExportException("判断参数不对");
	}