1.添加相关依赖（在父级pox中添加）
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-spring-boot3-starter</artifactId>
    <version>3.5.16</version>
</dependency>
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-extension</artifactId>
    <version>3.5.16</version>
</dependency>
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-jsqlparser</artifactId>
    <version>3.5.16</version>
</dependency>

2.调整BaseEntity
在searchValue和params字段上面加@TableField(exist = false)注解
注解的类包是 com.baomidou.mybatisplus.annotation.TableField;

3.调整MyBatisConfig
将配置中的
final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
换成
final MybatisSqlSessionFactoryBean sessionFactory = new MybatisSqlSessionFactoryBean();
类包是 com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean;

4.添加配置类MybatisPlusConfig（和MyBatisConfig放在同一个包就行）
import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.BlockAttackInnerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;

// proxyTargetClass = true 强制使用 CGLIB 代理，兼容若依的类结构
@EnableTransactionManagement(proxyTargetClass = true)
@Configuration
public class MybatisPlusConfig {
  @Bean
  public MybatisPlusInterceptor paginationInterceptor() {
    MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
    // 阻止恶意或误操作的全表更新删除
    interceptor.addInnerInterceptor(new BlockAttackInnerInterceptor());
    // 分页插件
    PaginationInnerInterceptor pageInterceptor = new PaginationInnerInterceptor();
    pageInterceptor.setMaxLimit(5000L);
    pageInterceptor.setOptimizeJoin(true);
    interceptor.addInnerInterceptor(pageInterceptor);
    return interceptor;
  }
}

5.在需要使用的Service或者Mapper中继承或实现相关接口。