以下构建报错
java: Ambiguous constructors found for creating java.lang.Long: Long(long), Long(java.lang.String). Either declare parameterless constructor or annotate the default constructor with an annotation named @Default. Occured at ‘Long selectCount(Wrapper queryWrapper)’ in ‘BaseMapper’.

java: The return type List is an abstract class or interface. Provide a non abstract / non interface result type or a factory method. Occured at ‘List selectList(IPage page, Wrapper queryWrapper)’ in ‘BaseMapper’.
java: The return type List<Map<String,Object>> is an abstract class or interface. Provide a non abstract / non interface result type or a factory method. Occured at ‘List selectMaps(IPage page, Wrapper queryWrapper)’ in ‘BaseMapper’.
原因很简单

Mapper引入错包了
正确包如下