1. Error reporting

Two classes inherit com baomidou. mybatisplus. mapper. BaseMapper

Service startup error:

Field baseMapper in com.baomidou.mybatisplus.service.impl.ServiceImpl required a single bean, but 2 were found:

- UserDao: defined in file [D:\projects\test\UserDao.class]

- DepartmentDao: defined in file [D:\projects\test\DepartmentDao.class]

The code is as follows

public interface UserDao extends BaseMapper<UserInfo>{ }

public interface DepartmentDao extends BaseMapper{ }

2. Error reporting reason

Departmentdao did not specify a generic type when inheriting basemapper

3. Solution:

Specifying generics when departmentdao inherits basemapper

public interface DepartmentDao extends BaseMapper<DepartmentInfo>{ }