springboot项目,引用了tk.mybatis,mapper继承了通用的extends BaseMapper,但是没有ByExample这些,不知道是哪出错了。 <groupId>tk.mybatis</groupId> <artifactId>mapper-spring-boot-starter</artifactId> <version>2.1.5</version> </dependency> <!-- https://mvnrepository.com/artifact/tk.mybatis/mapper --> <dependency> <groupId>tk.mybatis</groupId> <artifactId>mapper</artifactId> <version>4.1.5</version> </dependency>