diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Attachment.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Attachment.kt
new file mode 100644
index 0000000..3a6bc32
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Attachment.kt
@@ -0,0 +1,23 @@
+package club.itstudio.itmanager.entity.dto
+
+import com.baomidou.mybatisplus.annotation.IdType
+import com.baomidou.mybatisplus.annotation.TableId
+import com.baomidou.mybatisplus.annotation.TableName
+import club.itstudio.itmanager.entity.DataCopy
+import kotlinx.datetime.LocalDateTime
+import kotlinx.serialization.Serializable
+
+@Serializable
+@TableName("attachments")
+data class Attachment(
+    @TableId(type = IdType.AUTO)
+    val id: Long? = null,
+    val relatedTable: String? = null,
+    val relatedId: Long? = null,
+    val fileName: String? = null,
+    val filePath: String? = null,
+    val fileSize: Long? = null,
+    val contentType: String? = null,
+    val uploadedBy: Long? = null,
+    val uploadedAt: LocalDateTime? = null
+) : DataCopy
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/BorrowRecord.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/BorrowRecord.kt
new file mode 100644
index 0000000..a69f1b9
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/BorrowRecord.kt
@@ -0,0 +1,26 @@
+package club.itstudio.itmanager.entity.dto
+
+import com.baomidou.mybatisplus.annotation.IdType
+import com.baomidou.mybatisplus.annotation.TableId
+import com.baomidou.mybatisplus.annotation.TableName
+import club.itstudio.itmanager.entity.DataCopy
+import kotlinx.datetime.LocalDateTime
+import kotlinx.serialization.Serializable
+
+@Serializable
+@TableName("borrow_records")
+data class BorrowRecord(
+    @TableId(type = IdType.AUTO)
+    val id: Long? = null,
+    val itemId: Long = 0,
+    val borrowerId: Long = 0,
+    val quantity: Int = 1,
+    val borrowDate: LocalDateTime? = null,
+    val dueDate: LocalDateTime? = null,
+    val returnDate: LocalDateTime? = null,
+    val status: String = "BORROWED",  // BORROWED / RETURNED / OVERDUE / CANCELED
+    val approverId: Long? = null,
+    val note: String? = null,
+    val createdAt: LocalDateTime? = null,
+    val updatedAt: LocalDateTime? = null
+) : DataCopy
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Category.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Category.kt
new file mode 100644
index 0000000..132130b
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Category.kt
@@ -0,0 +1,20 @@
+package club.itstudio.itmanager.entity.dto
+
+import com.baomidou.mybatisplus.annotation.IdType
+import com.baomidou.mybatisplus.annotation.TableId
+import com.baomidou.mybatisplus.annotation.TableName
+import club.itstudio.itmanager.entity.DataCopy
+import kotlinx.datetime.LocalDateTime
+import kotlinx.serialization.Serializable
+
+@Serializable
+@TableName("categories")
+data class Category(
+    @TableId(type = IdType.AUTO)
+    val id: Long? = null,
+    val name: String = "",
+    val parentId: Long? = null,
+    val description: String? = null,
+    val createdAt: LocalDateTime? = null,
+    val updatedAt: LocalDateTime? = null
+) : DataCopy
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Department.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Department.kt
new file mode 100644
index 0000000..3e82679
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Department.kt
@@ -0,0 +1,21 @@
+package club.itstudio.itmanager.entity.dto
+
+import com.baomidou.mybatisplus.annotation.IdType
+import com.baomidou.mybatisplus.annotation.TableId
+import com.baomidou.mybatisplus.annotation.TableName
+import club.itstudio.itmanager.entity.DataCopy
+import kotlinx.datetime.LocalDateTime
+import kotlinx.serialization.Serializable
+
+@Serializable
+@TableName("departments")
+data class Department(
+    @TableId(type = IdType.AUTO)
+    val id: Long? = null,
+    val name: String = "",
+    val code: String? = null,
+    val parentId: Long? = null,
+    val description: String? = null,
+    val createdAt: LocalDateTime? = null,
+    val updatedAt: LocalDateTime? = null
+) : DataCopy
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/EmailNotice.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/EmailNotice.kt
new file mode 100644
index 0000000..deb3ffb
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/EmailNotice.kt
@@ -0,0 +1,24 @@
+package club.itstudio.itmanager.entity.dto
+
+import com.baomidou.mybatisplus.annotation.IdType
+import com.baomidou.mybatisplus.annotation.TableId
+import com.baomidou.mybatisplus.annotation.TableName
+import club.itstudio.itmanager.entity.DataCopy
+import kotlinx.datetime.LocalDateTime
+import kotlinx.serialization.Serializable
+
+@Serializable
+@TableName("email_notices")
+data class EmailNotice(
+    @TableId(type = IdType.AUTO)
+    val id: Long? = null,
+    val name: String? = null,
+    val targetEmails: String? = null,
+    val subject: String? = null,
+    val body: String? = null,
+    val enabled: Boolean = true,
+    val scheduleCron: String? = null,
+    val lastSentAt: LocalDateTime? = null,
+    val createdAt: LocalDateTime? = null,
+    val updatedAt: LocalDateTime? = null
+) : DataCopy
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Evaluation.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Evaluation.kt
new file mode 100644
index 0000000..7abb0b8
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Evaluation.kt
@@ -0,0 +1,20 @@
+package club.itstudio.itmanager.entity.dto
+
+import com.baomidou.mybatisplus.annotation.IdType
+import com.baomidou.mybatisplus.annotation.TableId
+import com.baomidou.mybatisplus.annotation.TableName
+import club.itstudio.itmanager.entity.DataCopy
+import kotlinx.datetime.LocalDateTime
+import kotlinx.serialization.Serializable
+
+@Serializable
+@TableName("evaluations")
+data class Evaluation(
+    @TableId(type = IdType.AUTO)
+    val id: Long? = null,
+    val relatedItemId: Long? = null,
+    val evaluatorId: Long? = null,
+    val score: Short? = null,  // 1-5
+    val comment: String? = null,
+    val createdAt: LocalDateTime? = null
+) : DataCopy
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/FinanceRecord.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/FinanceRecord.kt
new file mode 100644
index 0000000..bede005
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/FinanceRecord.kt
@@ -0,0 +1,26 @@
+package club.itstudio.itmanager.entity.dto
+
+import com.baomidou.mybatisplus.annotation.IdType
+import com.baomidou.mybatisplus.annotation.TableId
+import com.baomidou.mybatisplus.annotation.TableName
+import club.itstudio.itmanager.entity.DataCopy
+import kotlinx.datetime.LocalDateTime
+import kotlinx.serialization.Serializable
+import java.math.BigDecimal
+
+@Serializable
+@TableName("finance_records")
+data class FinanceRecord(
+    @TableId(type = IdType.AUTO)
+    val id: Long? = null,
+    val recordNo: String? = null,
+    val type: String = "",  // PURCHASE / REFUND / REPAIR / DEPRECIATION / OTHER
+    val relatedItemId: Long? = null,
+    val amount: BigDecimal = BigDecimal.ZERO,
+    val currency: String = "CNY",
+    val vendor: String? = null,
+    val occurredAt: LocalDateTime? = null,
+    val recordedBy: Long? = null,
+    val note: String? = null,
+    val createdAt: LocalDateTime? = null
+) : DataCopy
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Item.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Item.kt
new file mode 100644
index 0000000..87dd562
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Item.kt
@@ -0,0 +1,35 @@
+package club.itstudio.itmanager.entity.dto
+
+import com.baomidou.mybatisplus.annotation.IdType
+import com.baomidou.mybatisplus.annotation.TableId
+import com.baomidou.mybatisplus.annotation.TableName
+import club.itstudio.itmanager.entity.DataCopy
+import kotlinx.datetime.LocalDate
+import kotlinx.datetime.LocalDateTime
+import kotlinx.serialization.Serializable
+import java.math.BigDecimal
+
+@Serializable
+@TableName("items")
+data class Item(
+    @TableId(type = IdType.AUTO)
+    val id: Long? = null,
+    val code: String = "",
+    val name: String = "",
+    val categoryId: Long? = null,
+    val model: String? = null,
+    val brand: String? = null,
+    val location: String? = null,
+    val totalQuantity: Int = 0,
+    val availableQuantity: Int = 0,
+    val unit: String = "件",
+    val price: BigDecimal? = null,
+    val purchaseDate: LocalDate? = null,
+    val supplier: String? = null,
+    val status: String = "normal",
+    val description: String? = null,
+    val imagePath: String? = null,
+    val createdBy: Long? = null,
+    val createdAt: LocalDateTime? = null,
+    val updatedAt: LocalDateTime? = null
+) : DataCopy
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/ItemTransaction.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/ItemTransaction.kt
new file mode 100644
index 0000000..4fc78ec
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/ItemTransaction.kt
@@ -0,0 +1,24 @@
+package club.itstudio.itmanager.entity.dto
+
+import com.baomidou.mybatisplus.annotation.IdType
+import com.baomidou.mybatisplus.annotation.TableId
+import com.baomidou.mybatisplus.annotation.TableName
+import club.itstudio.itmanager.entity.DataCopy
+import kotlinx.datetime.LocalDateTime
+import kotlinx.serialization.Serializable
+
+@Serializable
+@TableName("item_transactions")
+data class ItemTransaction(
+    @TableId(type = IdType.AUTO)
+    val id: Long? = null,
+    val itemId: Long = 0,
+    val transType: String = "",  // IN / OUT / ADJUST / TRANSFER
+    val quantity: Int = 0,
+    val fromLocation: String? = null,
+    val toLocation: String? = null,
+    val relatedId: Long? = null,
+    val operatorId: Long? = null,
+    val note: String? = null,
+    val createdAt: LocalDateTime? = null
+) : DataCopy
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Memo.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Memo.kt
new file mode 100644
index 0000000..e462f02
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Memo.kt
@@ -0,0 +1,22 @@
+package club.itstudio.itmanager.entity.dto
+
+import com.baomidou.mybatisplus.annotation.IdType
+import com.baomidou.mybatisplus.annotation.TableId
+import com.baomidou.mybatisplus.annotation.TableName
+import club.itstudio.itmanager.entity.DataCopy
+import kotlinx.datetime.LocalDateTime
+import kotlinx.serialization.Serializable
+
+@Serializable
+@TableName("memos")
+data class Memo(
+    @TableId(type = IdType.AUTO)
+    val id: Long? = null,
+    val title: String? = null,
+    val content: String? = null,
+    val authorId: Long? = null,
+    val relatedItemId: Long? = null,
+    val isPublic: Boolean = false,
+    val createdAt: LocalDateTime? = null,
+    val updatedAt: LocalDateTime? = null
+) : DataCopy
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Personnel.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Personnel.kt
new file mode 100644
index 0000000..4dc95c6
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Personnel.kt
@@ -0,0 +1,25 @@
+package club.itstudio.itmanager.entity.dto
+
+import com.baomidou.mybatisplus.annotation.IdType
+import com.baomidou.mybatisplus.annotation.TableId
+import com.baomidou.mybatisplus.annotation.TableName
+import club.itstudio.itmanager.entity.DataCopy
+import kotlinx.datetime.LocalDateTime
+import kotlinx.serialization.Serializable
+
+@Serializable
+@TableName("personnel")
+data class Personnel(
+    @TableId(type = IdType.AUTO)
+    val id: Long? = null,
+    val userId: Long? = null,
+    val employeeNo: String? = null,
+    val name: String = "",
+    val departmentId: Long? = null,
+    val phone: String? = null,
+    val email: String? = null,
+    val role: String? = null,
+    val isActive: Boolean = true,
+    val createdAt: LocalDateTime? = null,
+    val updatedAt: LocalDateTime? = null
+) : DataCopy
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/AttachmentMapper.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/AttachmentMapper.kt
new file mode 100644
index 0000000..be3181f
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/AttachmentMapper.kt
@@ -0,0 +1,8 @@
+package club.itstudio.itmanager.mapper
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper
+import club.itstudio.itmanager.entity.dto.Attachment
+import org.apache.ibatis.annotations.Mapper
+
+@Mapper
+interface AttachmentMapper : BaseMapper<Attachment>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/BorrowRecordMapper.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/BorrowRecordMapper.kt
new file mode 100644
index 0000000..e2060d7
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/BorrowRecordMapper.kt
@@ -0,0 +1,8 @@
+package club.itstudio.itmanager.mapper
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper
+import club.itstudio.itmanager.entity.dto.BorrowRecord
+import org.apache.ibatis.annotations.Mapper
+
+@Mapper
+interface BorrowRecordMapper : BaseMapper<BorrowRecord>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/CategoryMapper.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/CategoryMapper.kt
new file mode 100644
index 0000000..3ed05c5
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/CategoryMapper.kt
@@ -0,0 +1,8 @@
+package club.itstudio.itmanager.mapper
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper
+import club.itstudio.itmanager.entity.dto.Category
+import org.apache.ibatis.annotations.Mapper
+
+@Mapper
+interface CategoryMapper : BaseMapper<Category>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/DepartmentMapper.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/DepartmentMapper.kt
new file mode 100644
index 0000000..d7e7561
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/DepartmentMapper.kt
@@ -0,0 +1,8 @@
+package club.itstudio.itmanager.mapper
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper
+import club.itstudio.itmanager.entity.dto.Department
+import org.apache.ibatis.annotations.Mapper
+
+@Mapper
+interface DepartmentMapper : BaseMapper<Department>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/EmailNoticeMapper.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/EmailNoticeMapper.kt
new file mode 100644
index 0000000..a53a04f
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/EmailNoticeMapper.kt
@@ -0,0 +1,8 @@
+package club.itstudio.itmanager.mapper
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper
+import club.itstudio.itmanager.entity.dto.EmailNotice
+import org.apache.ibatis.annotations.Mapper
+
+@Mapper
+interface EmailNoticeMapper : BaseMapper<EmailNotice>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/EvaluationMapper.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/EvaluationMapper.kt
new file mode 100644
index 0000000..314a206
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/EvaluationMapper.kt
@@ -0,0 +1,8 @@
+package club.itstudio.itmanager.mapper
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper
+import club.itstudio.itmanager.entity.dto.Evaluation
+import org.apache.ibatis.annotations.Mapper
+
+@Mapper
+interface EvaluationMapper : BaseMapper<Evaluation>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/FinanceRecordMapper.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/FinanceRecordMapper.kt
new file mode 100644
index 0000000..dc6b838
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/FinanceRecordMapper.kt
@@ -0,0 +1,8 @@
+package club.itstudio.itmanager.mapper
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper
+import club.itstudio.itmanager.entity.dto.FinanceRecord
+import org.apache.ibatis.annotations.Mapper
+
+@Mapper
+interface FinanceRecordMapper : BaseMapper<FinanceRecord>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/ItemMapper.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/ItemMapper.kt
new file mode 100644
index 0000000..d98f638
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/ItemMapper.kt
@@ -0,0 +1,8 @@
+package club.itstudio.itmanager.mapper
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper
+import club.itstudio.itmanager.entity.dto.Item
+import org.apache.ibatis.annotations.Mapper
+
+@Mapper
+interface ItemMapper : BaseMapper<Item>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/ItemTransactionMapper.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/ItemTransactionMapper.kt
new file mode 100644
index 0000000..76ffc31
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/ItemTransactionMapper.kt
@@ -0,0 +1,8 @@
+package club.itstudio.itmanager.mapper
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper
+import club.itstudio.itmanager.entity.dto.ItemTransaction
+import org.apache.ibatis.annotations.Mapper
+
+@Mapper
+interface ItemTransactionMapper : BaseMapper<ItemTransaction>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/MemoMapper.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/MemoMapper.kt
new file mode 100644
index 0000000..4943937
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/MemoMapper.kt
@@ -0,0 +1,8 @@
+package club.itstudio.itmanager.mapper
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper
+import club.itstudio.itmanager.entity.dto.Memo
+import org.apache.ibatis.annotations.Mapper
+
+@Mapper
+interface MemoMapper : BaseMapper<Memo>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/PersonnelMapper.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/PersonnelMapper.kt
new file mode 100644
index 0000000..5b3e9dd
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/mapper/PersonnelMapper.kt
@@ -0,0 +1,8 @@
+package club.itstudio.itmanager.mapper
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper
+import club.itstudio.itmanager.entity.dto.Personnel
+import org.apache.ibatis.annotations.Mapper
+
+@Mapper
+interface PersonnelMapper : BaseMapper<Personnel>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/AttachmentService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/AttachmentService.kt
new file mode 100644
index 0000000..c0249ec
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/AttachmentService.kt
@@ -0,0 +1,6 @@
+package club.itstudio.itmanager.service
+
+import com.baomidou.mybatisplus.extension.service.IService
+import club.itstudio.itmanager.entity.dto.Attachment
+
+interface AttachmentService : IService<Attachment>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/BorrowRecordService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/BorrowRecordService.kt
new file mode 100644
index 0000000..0c48c56
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/BorrowRecordService.kt
@@ -0,0 +1,6 @@
+package club.itstudio.itmanager.service
+
+import com.baomidou.mybatisplus.extension.service.IService
+import club.itstudio.itmanager.entity.dto.BorrowRecord
+
+interface BorrowRecordService : IService<BorrowRecord>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/CategoryService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/CategoryService.kt
new file mode 100644
index 0000000..52e7421
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/CategoryService.kt
@@ -0,0 +1,6 @@
+package club.itstudio.itmanager.service
+
+import com.baomidou.mybatisplus.extension.service.IService
+import club.itstudio.itmanager.entity.dto.Category
+
+interface CategoryService : IService<Category>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/DepartmentService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/DepartmentService.kt
new file mode 100644
index 0000000..e3eec2c
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/DepartmentService.kt
@@ -0,0 +1,6 @@
+package club.itstudio.itmanager.service
+
+import com.baomidou.mybatisplus.extension.service.IService
+import club.itstudio.itmanager.entity.dto.Department
+
+interface DepartmentService : IService<Department>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/EmailNoticeService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/EmailNoticeService.kt
new file mode 100644
index 0000000..056e44d
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/EmailNoticeService.kt
@@ -0,0 +1,6 @@
+package club.itstudio.itmanager.service
+
+import com.baomidou.mybatisplus.extension.service.IService
+import club.itstudio.itmanager.entity.dto.EmailNotice
+
+interface EmailNoticeService : IService<EmailNotice>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/EvaluationService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/EvaluationService.kt
new file mode 100644
index 0000000..54b0934
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/EvaluationService.kt
@@ -0,0 +1,6 @@
+package club.itstudio.itmanager.service
+
+import com.baomidou.mybatisplus.extension.service.IService
+import club.itstudio.itmanager.entity.dto.Evaluation
+
+interface EvaluationService : IService<Evaluation>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/FinanceRecordService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/FinanceRecordService.kt
new file mode 100644
index 0000000..d383e34
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/FinanceRecordService.kt
@@ -0,0 +1,6 @@
+package club.itstudio.itmanager.service
+
+import com.baomidou.mybatisplus.extension.service.IService
+import club.itstudio.itmanager.entity.dto.FinanceRecord
+
+interface FinanceRecordService : IService<FinanceRecord>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/ItemService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/ItemService.kt
new file mode 100644
index 0000000..43b8863
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/ItemService.kt
@@ -0,0 +1,6 @@
+package club.itstudio.itmanager.service
+
+import com.baomidou.mybatisplus.extension.service.IService
+import club.itstudio.itmanager.entity.dto.Item
+
+interface ItemService : IService<Item>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/ItemTransactionService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/ItemTransactionService.kt
new file mode 100644
index 0000000..befd743
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/ItemTransactionService.kt
@@ -0,0 +1,6 @@
+package club.itstudio.itmanager.service
+
+import com.baomidou.mybatisplus.extension.service.IService
+import club.itstudio.itmanager.entity.dto.ItemTransaction
+
+interface ItemTransactionService : IService<ItemTransaction>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/MemoService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/MemoService.kt
new file mode 100644
index 0000000..e3f28b5
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/MemoService.kt
@@ -0,0 +1,6 @@
+package club.itstudio.itmanager.service
+
+import com.baomidou.mybatisplus.extension.service.IService
+import club.itstudio.itmanager.entity.dto.Memo
+
+interface MemoService : IService<Memo>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/PersonnelService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/PersonnelService.kt
new file mode 100644
index 0000000..becdf3b
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/PersonnelService.kt
@@ -0,0 +1,6 @@
+package club.itstudio.itmanager.service
+
+import com.baomidou.mybatisplus.extension.service.IService
+import club.itstudio.itmanager.entity.dto.Personnel
+
+interface PersonnelService : IService<Personnel>
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/AttachmentServiceImpl.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/AttachmentServiceImpl.kt
new file mode 100644
index 0000000..a7b9ac1
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/AttachmentServiceImpl.kt
@@ -0,0 +1,10 @@
+package club.itstudio.itmanager.service.impl
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl
+import club.itstudio.itmanager.entity.dto.Attachment
+import club.itstudio.itmanager.mapper.AttachmentMapper
+import club.itstudio.itmanager.service.AttachmentService
+import org.springframework.stereotype.Service
+
+@Service
+class AttachmentServiceImpl : ServiceImpl<AttachmentMapper, Attachment>(), AttachmentService
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/BorrowRecordServiceImpl.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/BorrowRecordServiceImpl.kt
new file mode 100644
index 0000000..4abc50f
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/BorrowRecordServiceImpl.kt
@@ -0,0 +1,10 @@
+package club.itstudio.itmanager.service.impl
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl
+import club.itstudio.itmanager.entity.dto.BorrowRecord
+import club.itstudio.itmanager.mapper.BorrowRecordMapper
+import club.itstudio.itmanager.service.BorrowRecordService
+import org.springframework.stereotype.Service
+
+@Service
+class BorrowRecordServiceImpl : ServiceImpl<BorrowRecordMapper, BorrowRecord>(), BorrowRecordService
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/CategoryServiceImpl.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/CategoryServiceImpl.kt
new file mode 100644
index 0000000..a51ec41
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/CategoryServiceImpl.kt
@@ -0,0 +1,10 @@
+package club.itstudio.itmanager.service.impl
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl
+import club.itstudio.itmanager.entity.dto.Category
+import club.itstudio.itmanager.mapper.CategoryMapper
+import club.itstudio.itmanager.service.CategoryService
+import org.springframework.stereotype.Service
+
+@Service
+class CategoryServiceImpl : ServiceImpl<CategoryMapper, Category>(), CategoryService
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/DepartmentServiceImpl.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/DepartmentServiceImpl.kt
new file mode 100644
index 0000000..126be72
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/DepartmentServiceImpl.kt
@@ -0,0 +1,10 @@
+package club.itstudio.itmanager.service.impl
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl
+import club.itstudio.itmanager.entity.dto.Department
+import club.itstudio.itmanager.mapper.DepartmentMapper
+import club.itstudio.itmanager.service.DepartmentService
+import org.springframework.stereotype.Service
+
+@Service
+class DepartmentServiceImpl : ServiceImpl<DepartmentMapper, Department>(), DepartmentService
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/EmailNoticeServiceImpl.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/EmailNoticeServiceImpl.kt
new file mode 100644
index 0000000..ece0c4d
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/EmailNoticeServiceImpl.kt
@@ -0,0 +1,10 @@
+package club.itstudio.itmanager.service.impl
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl
+import club.itstudio.itmanager.entity.dto.EmailNotice
+import club.itstudio.itmanager.mapper.EmailNoticeMapper
+import club.itstudio.itmanager.service.EmailNoticeService
+import org.springframework.stereotype.Service
+
+@Service
+class EmailNoticeServiceImpl : ServiceImpl<EmailNoticeMapper, EmailNotice>(), EmailNoticeService
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/EvaluationServiceImpl.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/EvaluationServiceImpl.kt
new file mode 100644
index 0000000..f10ab88
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/EvaluationServiceImpl.kt
@@ -0,0 +1,10 @@
+package club.itstudio.itmanager.service.impl
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl
+import club.itstudio.itmanager.entity.dto.Evaluation
+import club.itstudio.itmanager.mapper.EvaluationMapper
+import club.itstudio.itmanager.service.EvaluationService
+import org.springframework.stereotype.Service
+
+@Service
+class EvaluationServiceImpl : ServiceImpl<EvaluationMapper, Evaluation>(), EvaluationService
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/FinanceRecordServiceImpl.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/FinanceRecordServiceImpl.kt
new file mode 100644
index 0000000..6a4e154
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/FinanceRecordServiceImpl.kt
@@ -0,0 +1,10 @@
+package club.itstudio.itmanager.service.impl
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl
+import club.itstudio.itmanager.entity.dto.FinanceRecord
+import club.itstudio.itmanager.mapper.FinanceRecordMapper
+import club.itstudio.itmanager.service.FinanceRecordService
+import org.springframework.stereotype.Service
+
+@Service
+class FinanceRecordServiceImpl : ServiceImpl<FinanceRecordMapper, FinanceRecord>(), FinanceRecordService
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/ItemServiceImpl.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/ItemServiceImpl.kt
new file mode 100644
index 0000000..1b0243c
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/ItemServiceImpl.kt
@@ -0,0 +1,10 @@
+package club.itstudio.itmanager.service.impl
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl
+import club.itstudio.itmanager.entity.dto.Item
+import club.itstudio.itmanager.mapper.ItemMapper
+import club.itstudio.itmanager.service.ItemService
+import org.springframework.stereotype.Service
+
+@Service
+class ItemServiceImpl : ServiceImpl<ItemMapper, Item>(), ItemService
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/ItemTransactionServiceImpl.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/ItemTransactionServiceImpl.kt
new file mode 100644
index 0000000..59b1030
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/ItemTransactionServiceImpl.kt
@@ -0,0 +1,10 @@
+package club.itstudio.itmanager.service.impl
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl
+import club.itstudio.itmanager.entity.dto.ItemTransaction
+import club.itstudio.itmanager.mapper.ItemTransactionMapper
+import club.itstudio.itmanager.service.ItemTransactionService
+import org.springframework.stereotype.Service
+
+@Service
+class ItemTransactionServiceImpl : ServiceImpl<ItemTransactionMapper, ItemTransaction>(), ItemTransactionService
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/MemoServiceImpl.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/MemoServiceImpl.kt
new file mode 100644
index 0000000..b241a85
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/MemoServiceImpl.kt
@@ -0,0 +1,10 @@
+package club.itstudio.itmanager.service.impl
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl
+import club.itstudio.itmanager.entity.dto.Memo
+import club.itstudio.itmanager.mapper.MemoMapper
+import club.itstudio.itmanager.service.MemoService
+import org.springframework.stereotype.Service
+
+@Service
+class MemoServiceImpl : ServiceImpl<MemoMapper, Memo>(), MemoService
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/PersonnelServiceImpl.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/PersonnelServiceImpl.kt
new file mode 100644
index 0000000..501e7f2
--- /dev/null
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/PersonnelServiceImpl.kt
@@ -0,0 +1,10 @@
+package club.itstudio.itmanager.service.impl
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl
+import club.itstudio.itmanager.entity.dto.Personnel
+import club.itstudio.itmanager.mapper.PersonnelMapper
+import club.itstudio.itmanager.service.PersonnelService
+import org.springframework.stereotype.Service
+
+@Service
+class PersonnelServiceImpl : ServiceImpl<PersonnelMapper, Personnel>(), PersonnelService