springboot 集成，pagehelper分页插件不起作用java.lang.ClassCastException: java.util.ArrayList cannot be cast to

springboot 集成，pagehelper分页插件不起作用java.lang.ClassCastException: java.util.ArrayList cannot be cast to com.github.pagehelper.Page

是因为你少添加了一个依赖。

<dependency>
			<groupId>com.github.pagehelper</groupId>
			<artifactId>
				pagehelper-spring-boot-autoconfigure
			</artifactId>
			<version>1.2.5</version>
</dependency>