问题描述

使用mybatis-plus框架替换原来的mybatis框架，启动ruoyi系统级应用报错

 Application run failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'sysConfigController': Unsatisfied dependency expressed through field 'configService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'sysConfigServiceImpl': Unsatisfied dependency expressed through field 'configMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'sysConfigMapper' defined in file [E:\ruoyi-modules\ruoyi-system\target\classes\com\ruoyi\system\mapper\SysConfigMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [com/baomidou/mybatisplus/autoconfigure/MybatisPlusAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.io.IOException: Failed to parse mapping resource: 'file [E:\ruoyi-modules\ruoyi-system\target\classes\mapper\system\SysConfigMapper.xml]'
	at org.springframework.beans.factory.annotation.Aut 
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'sysConfigServiceImpl': Unsatisfied dependency expressed through field 'configMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'sysConfigMapper' defined in file [E:\ruoyi-modules\ruoyi-system\target\classes\com\ruoyi\system\mapper\SysConfigMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [com/baomidou/mybatisplus/autoconfigure/MybatisPlusAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.io.IOException: Failed to parse mapping resource: 'file [E:\ruoyi-modules\ruoyi-system\target\classes\mapper\system\SysConfigMapper.xml]'
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:713)
	at  

解决方案：

在nacos里的配置文件没有改，把原来mybatis配置替换为mybatis-plus的：

mybatis-plus:
  # mapper映射文件的位置，扫描所有模块下的mapper目录中的XML文件
  mapper-locations: classpath*:mapper/**/*.xml
  
  # 实体类的包路径，MyBatis-Plus会在此包下查找实体类并作为别名使用
  type-aliases-package: com.ruoyi.**.domain
  
  # MyBatis核心配置
  configuration:
    # 开启数据库字段下划线命名自动转换为Java实体类的驼峰命名
    map-underscore-to-camel-case: true
    
    # 关闭二级缓存（RuoYi框架通常不使用二级缓存）
    cache-enabled: false
    
    # 日志实现类，使用标准输出打印SQL语句（开发环境调试用）
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
  
  # 全局配置
  global-config:
    db-config:
      # 主键生成策略：自动增长（AUTO_INCREMENT）
      id-type: auto
      
      # 表名下划线命名（数据库表名使用下划线，与实体类驼峰命名对应）
      table-underline: true