private void configFindExtension(Method method) throws DaoGenerateException {
		MongoLimit mongoLimit = method.getAnnotation(MongoLimit.class);
		if (mongoLimit != null && mongoLimit.value() != -1) {
			limit = mongoLimit.value();
		}

		MongoSkip mongoSkip = method.getAnnotation(MongoSkip.class);
		if (mongoSkip != null && mongoSkip.value() != -1) {
			skip = mongoSkip.value();
		}

		MongoSort sort = method.getAnnotation(MongoSort.class);
		if (sort != null) {
			try {
				sortObject = (DBObject) JSON.parse(sort.value());
			} catch (Exception e) {
				throw new DaoGenerateException("方法[" + method + "]配置错误：@MongoSort注解配置的表达式 不符合BSON格式");
			}

		}
	}