idea 整合ssm学习pagehelper时报错

idea 整合ssm学习pagehelper时报错：

Caused by: org.springframework.core.NestedIOException: Failed to parse config resource: class path resource [mybatis-config.xml]; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias ‘com.github.pagehelper.PageInterceptor’. Cause: java.lang.ClassNotFoundException: Cannot find class: com.github.pagehelper.PageInterceptor

我的解决：

导入依赖后 put into output root