报错内容:Failed to load ApplicationContext
Invalid bean definition with name 'dataSource' defined in URL [file:/D:/KaiFa/pals/IBC/target/classes/spring-mybatis.xml]: Could not resolve placeholder 'jdbc.driver' in string value "${jdbc.driver}"; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'jdbc.driver' in string value "${jdbc.driver}"Invali
