The alias 'Criteria' is already mapped to the value 'XX'

Springboot+Mybatis 开始写的测试类没有问题，后来用逆向工程生成多个。就爆出此错误。application：
mybatis.mapper-locations=classpath:mybatis/mapper/*.xml
mybatis.type-aliases-package=cn.xxxx.xxxx.pojomain 主类：
@MapperScan("cn.xx.xxx.mapper")错误原因
Caused by: org.apache.ibatis.type.TypeException: The alias 'Criteria' is already mapped to the value 'cn.citic.officePlatform.pojo.ExcelIndexExample$Criteria'.
at org.apache.ibatis.type.TypeAliasRegistry.registerAlias(TypeAliasRegistry.java:157) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.type.TypeAliasRegistry.registerAlias(TypeAliasRegistry.java:147) ~[mybatis-3.5.1.jar:3.5.1]
at java.lang.Iterable.forEach(Iterable.java:75) ~[na:1.8.0_181]
at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:464) ~[mybatis-spring-2.0.1.jar:2.0.1]
at org.mybatis.spring.SqlSessionFactoryBean.afterPropertiesSet(SqlSessionFactoryBean.java:424) ~[mybatis-spring-2.0.1.jar:2.0.1]
at org.mybatis.spring.SqlSessionFactoryBean.getObject(SqlSessionFactoryBean.java:554) ~[mybatis-spring-2.0.1.jar:2.0.1]
at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration.sqlSessionFactory(MybatisAutoConfiguration.java:150) ~[mybatis-spring-boot-autoconfigure-2.0.1.jar:2.0.1]
at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration$$EnhancerBySpringCGLIB$$171b6167.CGLIB$sqlSessionFactory$2(<generated>) ~[mybatis-spring-boot-autoconfigure-2.0.1.jar:2.0.1]
at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration$$EnhancerBySpringCGLIB$$171b6167$$FastClassBySpringCGLIB$$67974861.invoke(<generated>) ~[mybatis-spring-boot-autoconfigure-2.0.1.jar:2.0.1]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration$$EnhancerBySpringCGLIB$$171b6167.sqlSessionFactory(<generated>) ~[mybatis-spring-boot-autoconfigure-2.0.1.jar:2.0.1]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_181]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_181]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_181]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_181]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
... 57 common frames omitted看着好像是冲突，但是不清楚什么冲突。或者少配置了什么。求大神解决问题！