mybatis plus serviceImpl

MyBatis Plus is a popular Java-based ORM framework that simplifies the development of database-driven applications. The serviceImpl package in MyBatis Plus is typically used to implement service logic for database operations.

In a typical implementation, the serviceImpl package will contain classes that implement the service interface defined in the service package. These classes will typically use MyBatis Plus to perform CRUD (Create, Read, Update, Delete) operations on the database.

For example, suppose we have a User entity and a corresponding UserService interface with methods to create, read, update, and delete users. We can implement the UserService interface in the serviceImpl package as follows:

@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {

    // implementation of UserService methods
    // ...
}

Here, the ServiceImpl class is a base class provided by MyBatis Plus that implements common CRUD operations. We specify the UserMapper as the mapper interface for the User entity, and the User entity itself as the entity class.

With this implementation, we can use the UserService interface to perform database operations on User entities without worrying about low-level database operations.