springboot使用Mybatis-plus分页插件的案例详解

<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-boot-starter</artifactId>
    <version>{mybatis-plus-version}</version>
</dependency>
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-extension</artifactId>
    <version>{mybatis-plus-version}</version>
</dependency>

mybatis-plus:
  configuration:
    # 将下划线转换为驼峰命名规则
    map-underscore-to-camel-case: true
    # 配置 MyBatis Plus 分页插件
    plugins:
      - com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import org.springframework.stereotype.Service;
@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserMapper userMapper;
    @Override
    public Page<User> getUsers(int pageNum, int pageSize) {
        // 封装分页参数
        Page<User> page = new Page<>(pageNum, pageSize);
        return userMapper.selectPage(page, null);
    }
}

import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;
@Data
@TableName("user")
public class User {
    private Long id;
    private String name;
    private Integer age;
    private String email;
}

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Repository;
@Mapper
@Repository
public interface UserMapper extends BaseMapper<User> {
}