org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'indexController': Unsatisfied dependency expressed through field 'indexService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'indexServiceImpl': Unsatisfied dependency expressed through field 'userService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userServiceImpl': Unsatisfied dependency expressed through field 'baseMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userMapper' defined in file [I:\LX\aci_parent\service\service_acl\target\classes\com\lianxi\aclservice\mapper\UserMapper.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 org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [I:\LX\aci_parent\service\service_acl\target\classes\com\lianxi\aclservice\mapper\xml\PermissionMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [I:\LX\aci_parent\service\service_acl\target\classes\com\lianxi\aclservice\mapper\xml\PermissionMapper.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.atguigu.aclservice.entity.Permission'. Cause: java.lang.ClassNotFoundException: Cannot find class: com.atguigu.aclservice.entity.Permission
這種錯誤的情況有多種，一個是你的mysql配置有問題,一種是你的SQL語句或者是實體類不對。另外一種是xml映射路徑不對。
如: