package com.ruoyi.system.service.impl; import com.baomidou.mybatisplus.extension.plugins.pagination.Page; import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl; import com.ruoyi.system.mapper.DeviceUsageMapper; import com.ruoyi.system.model.DeviceUsage; import com.ruoyi.system.model.Record; import com.ruoyi.system.query.DeviceListQuery; import com.ruoyi.system.service.DeviceUsageService; import com.ruoyi.system.vo.DeviceListVo; import org.springframework.stereotype.Service; import java.math.BigDecimal; import java.time.LocalDate; import java.time.LocalDateTime; import java.time.YearMonth; import java.util.List; import java.util.stream.Collectors; /** *
* 服务实现类 *
* * @author administrator * @since 2026-01-13 */ @Service public class DeviceUsageServiceImpl extends ServiceImpl