org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'xxxMapper' defined in file [D:\.......\mapper\xxxMapper.class]: Invalid value type for attribute 'factoryBeanObjectType': java.lang.String

之前：

       <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.5.8</version>
        </dependency>

我这里用的spring版本是3.+，所以可能是maven依赖

版本不兼容

解决：

       <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-spring-boot3-starter</artifactId>
            <version>3.5.7</version>
        </dependency>