求大佬帮忙解决下
Caused by: org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: Configuration problem: Id is required for element 'properties' when used as a top-level tag
Offending resource: class path resource [spring/spring-DAO.xml]
Offending resource: class path resource [spring/spring-DAO.xml]
这个问题问题怎么解决?