SpringBoot 3.x整合MyBatis-Plus时报错 Invalid bean definition with name ‘xxxMapper‘ defined in flle

问题描述

在搭建Spring Boot 项目整合 Mybatis-Plus 时产生报错

Invalid bean definition with name 'XXXMapper' defined in file [C:\Users\19609\Desktop\OrderApp\order_boot\target\classes\com\louis\order\mapper\UserMapper.class]: Invalid value type for attribute 'factoryBeanObjectType': java.lang.String

排查路径

1.检查mapper文件是否添加@Mapper注解

2.检查启动类是否添加@MapperScan注解

3.检查application.yml文件配置

mybatis-plus:
  mapper-locations: classpath*:/mapper/​**​/*.xml
  type-aliases-package: com.louis.xxx.entity  # 你的实体类包路径
  configuration:
    map-underscore-to-camel-case: true
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

4.重新mvn clean install

解决方案

发现都没什么问题，最后找了一下mybatisPlus官网，发现是maven依赖不匹配导致的。还是因为之前一直用的Spring Boot2.x导致的思维定式，都没注意这么简单的细节。

Spring Boot 2.x

<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-boot-starter</artifactId>
    <version>3.5.11</version>
</dependency>

Spring Boot 3.x

<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-spring-boot3-starter</artifactId>
    <version>3.5.11</version>
</dependency>

详情请访问：MybatisPlus官网