前言

在将项目由SpringBoot2.x升级为SpringBoot3.2.0时，对Mybatis-Plus及Pagehelper同时进行了升级，升级过程组出现了包冲突以及factoryBeanObjectType异常的情况，下面是一个总结！

1、SpringBoot3在整合Mybatis-Plus与PageHelper的同时会出现，包冲突问题

pagehelper-spring-boot-starter包中会引入mybatis-spring-boot-starter包，会与mybatis-plus-boot-starter出现冲突：

***************************
APPLICATION FAILED TO START
***************************Description:An attempt was made to call a method that does not exist. The attempt was made from the following location:com.baomidou.mybatisplus.autoconfigure.MybatisPlusProperties$CoreConfiguration.applyTo(MybatisPlusProperties.java:356)The following method did not exist:'void org.apache.ibatis.session.Configuration.setArgNameBasedConstructorAutoMapping(boolean)'The calling method's class, com.baomidou.mybatisplus.autoconfigure.MybatisPlusProperties$CoreConfiguration, was loaded from the following location:jar:file:/D:/m2/com/baomidou/mybatis-plus-spring-boot-autoconfigure/3.5.4.1/mybatis-plus-spring-boot-autoconfigure-3.5.4.1.jar!/com/baomidou/mybatisplus/autoconfigure/MybatisPlusProperties$CoreConfiguration.classThe called method's class, org.apache.ibatis.session.Configuration, is available from the following locations:jar:file:/D:/m2/org/mybatis/mybatis/3.5.9/mybatis-3.5.9.jar!/org/apache/ibatis/session/Configuration.classThe called method's class hierarchy was loaded from the following locations:org.apache.ibatis.session.Configuration: file:/D:/m2/org/mybatis/mybatis/3.5.9/mybatis-3.5.9.jarAction:Correct the classpath of your application so that it contains compatible versions of the classes com.baomidou.mybatisplus.autoconfigure.MybatisPlusProperties$CoreConfiguration and org.apache.ibatis.session.Configuration

解决包冲突：
需要排除mybatis-spring-boot-starter

<dependency><groupId>com.github.pagehelper</groupId><artifactId>pagehelper-spring-boot-starter</artifactId><version>1.4.5</version><exclusions><exclusion><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId></exclusion></exclusions></dependency>

2、factoryBeanObjectType错误

出现java.lang.IllegalArgumentException: Invalid value type for attribute 'factoryBeanObjectType': java.lang.String异常信息

java.lang.IllegalArgumentException: Invalid value type for attribute 'factoryBeanObjectType': java.lang.Stringat org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getTypeForFactoryBeanFromAttributes(FactoryBeanRegistrySupport.java:86)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryBean(AbstractAutowireCapableBeanFactory.java:838)at org.springframework.beans.factory.support.AbstractBeanFactory.isTypeMatch(AbstractBeanFactory.java:620)at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:573)at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:532)at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:138)at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:775)at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:597)at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146)at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:753)at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:455)at org.springframework.boot.SpringApplication.run(SpringApplication.java:323)at org.springframework.boot.SpringApplication.run(SpringApplication.java:1342)at org.springframework.boot.SpringApplication.run(SpringApplication.java:1331)at com.lhz.demo.DemoApplication.main(DemoApplication.java:10)

解决方案：
需要排除mybatis-plus-boot-starter中mybatis-spring，并且单独引入高版本的mybatis-spring

<dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>3.5.4.1</version><exclusions><exclusion><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>3.0.3</version></dependency>

3、完整pom配置

<dependency><groupId>com.github.pagehelper</groupId><artifactId>pagehelper-spring-boot-starter</artifactId><version>1.4.5</version><exclusions><exclusion><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId></exclusion></exclusions></dependency><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>3.5.4.1</version><exclusions><exclusion><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>3.0.3</version></dependency>