diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 10c540d..0357d22 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -5,6 +5,7 @@
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
         <option name="externalProjectPath" value="$PROJECT_DIR$/src/beckend" />
+        <option name="gradleJvm" value="25" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$/src/beckend" />
diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
new file mode 100644
index 0000000..02d4983
--- /dev/null
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -0,0 +1,12 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="PyShadowingBuiltinsInspection" enabled="true" level="WEAK WARNING" enabled_by_default="true">
+      <option name="ignoredNames">
+        <list>
+          <option value="id" />
+        </list>
+      </option>
+    </inspection_tool>
+  </profile>
+</component>
\ No newline at end of file
diff --git a/.idea/sqldialects.xml b/.idea/sqldialects.xml
new file mode 100644
index 0000000..9c210b8
--- /dev/null
+++ b/.idea/sqldialects.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="SqlDialectMappings">
+    <file url="file://$PROJECT_DIR$/schema.sql" dialect="MariaDB" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/README.md b/README.md
index 015856f..8b9de9e 100644
--- a/README.md
+++ b/README.md
@@ -5,122 +5,123 @@
 [完整信息](./API.md)
 
 - /api
-  - /test
-    - /hello
-  - /v1
-    - /auth
-      - /login
-      - /logout
-      - /relogin
-      - /ask-code
-      - /register
-      - /reset
-    - /departments
-    - /email
-    - /evaluation-records
-    - /finance
-    - /items
-    - /memos
-    - /personnel
-    - /project-groups
-    - /proof-images
-    - /usages
-    - /users
+    - /test
+        - /hello
+    - /v1
+        - /auth
+            - /login
+            - /logout
+            - /relogin
+            - /ask-code
+            - /register
+            - /reset
+        - /departments
+        - /email
+        - /evaluation-records
+        - /finance
+        - /items
+        - /memos
+        - /personnel
+        - /project-groups
+        - /proof-images
+        - /usages
+        - /users
 
 ## 预计完成的 API 列表
 
-### 1. **物品管理 (Items)** - `/api/`
+### 1. **物品管理 (Items)**
 
-| 端点                              | 方法                  | 功能说明           |
-|---------------------------------|---------------------|----------------|
-| `items/`                        | GET/POST/PUT/DELETE | 物品 CRUD 操作     |
-| `items/{id}/upload_images/`     | POST                | 上传物品图片         |
-| `items/{id}/set_primary_image/` | POST                | 设置主图片          |
-| `items/{id}/borrow/`            | POST                | 借用物品           |
-| `items/{id}/return_item/`       | POST                | 归还物品           |
-| `items/available/`              | GET                 | 获取可用物品列表       |
-| `items/in_use/`                 | GET                 | 获取使用中的物品列表     |
-| `usages/`                       | GET/POST/PUT/DELETE | 物品使用记录 CRUD 操作 |
-| `usages/{id}/upload_images/`    | POST                | 上传使用记录图片       |
-| `usages/current/`               | GET                 | 获取当前使用中的记录     |
-| `usages/by_user/`               | GET                 | 根据用户姓名获取使用记录   |
-| `items/categories/`（原 `item_categories/`） | GET/POST/PUT/DELETE | 物品类别 CRUD 操作   |
-| `users/`                        | GET                 | 获取用户列表（只读）     |
-| `items/images/`（原 `item-images/`）         | GET/POST/PUT/DELETE | 物品图片 CRUD 操作   |
-| `usages/images/`（原 `usage-images/`）       | GET/POST/PUT/DELETE | 使用记录图片 CRUD 操作 |
+| 端点                                         | 方法                | 功能说明                 |
+|----------------------------------------------|---------------------|--------------------------|
+| `items/`                                     | GET/POST/PUT/DELETE | 物品 CRUD 操作           |
+| `items/{id}/upload_images/`                  | POST                | 上传物品图片             |
+| `items/{id}/set_primary_image/`              | POST                | 设置主图片               |
+| `items/{id}/borrow/`                         | POST                | 借用物品                 |
+| `items/{id}/return_item/`                    | POST                | 归还物品                 |
+| `items/available/`                           | GET                 | 获取可用物品列表         |
+| `items/in_use/`                              | GET                 | 获取使用中的物品列表     |
+| `usages/`                                    | GET/POST/PUT/DELETE | 物品使用记录 CRUD 操作   |
+| `usages/{id}/upload_images/`                 | POST                | 上传使用记录图片         |
+| `usages/current/`                            | GET                 | 获取当前使用中的记录     |
+| `usages/by_user/`                            | GET                 | 根据用户姓名获取使用记录 |
+| `items/categories/`（原 `item_categories/`） | GET/POST/PUT/DELETE | 物品类别 CRUD 操作       |
+| `users/`                                     | GET                 | 获取用户列表（只读）     |
+| `items/images/`（原 `item-images/`）         | GET/POST/PUT/DELETE | 物品图片 CRUD 操作       |
+| `usages/images/`（原 `usage-images/`）       | GET/POST/PUT/DELETE | 使用记录图片 CRUD 操作   |
 
 ---
 
-### 2. **人员管理 (Personnel)** - `/api/`
+### 2. **人员管理 (Personnel)**
 
-| 端点                              | 方法                  | 功能说明             |
-|---------------------------------|---------------------|------------------|
-| `personnel/`                    | GET/POST/PUT/DELETE | 人员信息 CRUD 操作     |
+| 端点                            | 方法                | 功能说明                         |
+|---------------------------------|---------------------|----------------------------------|
+| `personnel/`                    | GET/POST/PUT/DELETE | 人员信息 CRUD 操作               |
 | `personnel/statistics/`         | GET                 | 获取人员统计信息（按部门和职位） |
-| `personnel/{id}/set_inactive/`  | POST                | 设置人员为已卸任状态       |
-| `personnel/{id}/set_active/`    | POST                | 设置人员为在职状态        |
-| `personnel/{id}/`               | DELETE              | 删除人员（发送邮件通知）     |
-| `personnel/check_expired/`      | POST                | 检查并更新已到期的人员状态    |
-| `project-groups/`               | GET/POST/PUT/DELETE | 项目组 CRUD 操作      |
-| `project-groups/by_department/` | GET                 | 按部门获取项目组         |
-| `project-groups/{id}/`          | DELETE              | 删除项目组（发送邮件通知）    |
+| `personnel/{id}/set_inactive/`  | POST                | 设置人员为已卸任状态             |
+| `personnel/{id}/set_active/`    | POST                | 设置人员为在职状态               |
+| `personnel/{id}/`               | DELETE              | 删除人员（发送邮件通知）         |
+| `personnel/check_expired/`      | POST                | 检查并更新已到期的人员状态       |
+| `project-groups/`               | GET/POST/PUT/DELETE | 项目组 CRUD 操作                 |
+| `project-groups/by_department/` | GET                 | 按部门获取项目组                 |
+| `project-groups/{id}/`          | DELETE              | 删除项目组（发送邮件通知）       |
 
 **搜索/过滤字段**: `name`, `student_id`, `phone`, `email`, `grade_major`
 
 ---
 
-### 3. **财务管理 (Finance)** - `/api/`
+### 3. **财务管理 (Finance)**
 
-| 端点                            | 方法                  | 功能说明             |
-|-------------------------------|---------------------|------------------|
-| `finance/`                    | GET/POST/PUT/DELETE | 财务记录 CRUD 操作     |
-| `finance/{id}/upload_images/` | POST                | 上传财务凭证图片         |
-| `finance/{id}/`               | DELETE              | 删除财务记录（发送邮件通知）   |
-| `departments/`                | GET/POST/PUT/DELETE | 部门 CRUD 操作       |
-| `departments/{id}/`           | DELETE              | 删除部门（发送邮件通知）     |
-| `finance/categories/`（原 `finance_categories/`） | GET/POST/PUT/DELETE | 财务分类 CRUD 操作     |
-| `proof-images/`               | GET/POST/PUT/DELETE | 财务凭证图片 CRUD 操作   |
-| `proof-images/{id}/`          | DELETE              | 删除凭证图片（自动删除物理文件） |
+| 端点                                              | 方法                | 功能说明                         |
+|---------------------------------------------------|---------------------|----------------------------------|
+| `finance/`                                        | GET/POST/PUT/DELETE | 财务记录 CRUD 操作               |
+| `finance/{id}/upload_images/`                     | POST                | 上传财务凭证图片                 |
+| `finance/{id}/`                                   | DELETE              | 删除财务记录（发送邮件通知）     |
+| `departments/`                                    | GET/POST/PUT/DELETE | 部门 CRUD 操作                   |
+| `departments/{id}/`                               | DELETE              | 删除部门（发送邮件通知）         |
+| `finance/categories/`（原 `finance_categories/`） | GET/POST/PUT/DELETE | 财务分类 CRUD 操作               |
+| `proof-images/`                                   | GET/POST/PUT/DELETE | 财务凭证图片 CRUD 操作           |
+| `proof-images/{id}/`                              | DELETE              | 删除凭证图片（自动删除物理文件） |
 
 ---
 
-### 4. **邮件通知 (Email Notice)** - `/api/`
+### 4. **邮件通知 (Email Notice)**
 
-| 端点                       | 方法       | 功能说明           |
-|--------------------------|----------|----------------|
+| 端点                     | 方法     | 功能说明                    |
+|--------------------------|----------|-----------------------------|
 | `notification-settings/` | GET/POST | 获取/更新通知设置和邮箱列表 |
-| `toggle-email-status/`   | POST     | 切换邮箱启用/禁用状态    |
+| `toggle-email-status/`   | POST     | 切换邮箱启用/禁用状态       |
 
 **功能**: 管理邮件通知的全局开关和收件人列表
 
 ---
 
-### 5. **备忘录 (Memo)** - `/api/`
+### 5. **备忘录 (Memo)**
 
-| 端点                         | 方法                  | 功能说明        |
-|----------------------------|---------------------|-------------|
+| 端点                       | 方法                | 功能说明         |
+|----------------------------|---------------------|------------------|
 | `memos/`                   | GET/POST/PUT/DELETE | 备忘录 CRUD 操作 |
-| `memos/{id}/upload_image/` | POST                | 上传备忘录图片     |
-| `memos/{id}/delete_image/` | DELETE              | 删除备忘录图片     |
+| `memos/{id}/upload_image/` | POST                | 上传备忘录图片   |
+| `memos/{id}/delete_image/` | DELETE              | 删除备忘录图片   |
 
 **搜索字段**: `title`, `content`  
 **默认排序**: 按更新时间倒序
 
 ---
 
-### 6. **考评系统 (Evaluation)** - `/api/`
+### 6. **考评系统 (Evaluation)**
 
-| 端点                                      | 方法                  | 功能说明                   |
-|-----------------------------------------|---------------------|------------------------|
-| `evaluation-records/`                   | GET/POST/PUT/DELETE | 考评记录 CRUD 操作           |
-| `evaluation-records/personnel-summary/` | GET                 | 获取人员考评汇总（按人员、部门、年级分组）  |
-| `evaluation-records/personnel-records/` | GET                 | 获取某个人员的所有考评记录          |
-| `evaluation-records/delete-personnel/`  | DELETE              | 删除某个人员的所有考评记录          |
-| `evaluation-records/export/`            | GET                 | 导出考评记录为 Excel（每个人一个表格） |
-| `evaluation-records/download-template/` | GET                 | 下载人员导入样表               |
-| `evaluation-records/import/`            | POST                | 导入考评记录（支持 Excel/CSV）   |
+| 端点                                    | 方法                | 功能说明                                   |
+|-----------------------------------------|---------------------|--------------------------------------------|
+| `evaluation-records/`                   | GET/POST/PUT/DELETE | 考评记录 CRUD 操作                         |
+| `evaluation-records/personnel-summary/` | GET                 | 获取人员考评汇总（按人员、部门、年级分组） |
+| `evaluation-records/personnel-records/` | GET                 | 获取某个人员的所有考评记录                 |
+| `evaluation-records/delete-personnel/`  | DELETE              | 删除某个人员的所有考评记录                 |
+| `evaluation-records/export/`            | GET                 | 导出考评记录为 Excel（每个人一个表格）     |
+| `evaluation-records/download-template/` | GET                 | 下载人员导入样表                           |
+| `evaluation-records/import/`            | POST                | 导入考评记录（支持 Excel/CSV）             |
 
 **功能**:
+
 - 支持批量导入和导出
 - 样表格式：只需部门、年级、姓名（初始分39分）
 - 完整格式：包含详细的加分/扣分记录
@@ -130,17 +131,56 @@
 
 ### 7. **认证相关**
 
-| 端点                   | 方法       | 功能说明        |
-|----------------------|----------|-------------|
+这是原先的 Django REST Framework JWT 认证端点，主要用于获取和刷新 JWT 令牌。
+现在改用 `/api/v1/auth/` 端点来处理登录、注册、重置密码等操作。
+
+| 端点                 | 方法     | 功能说明        |
+|----------------------|----------|-----------------|
 | `api/token/`         | POST     | JWT 令牌获取    |
 | `api/token/refresh/` | POST     | JWT 令牌刷新    |
 | `admin/`             | GET/POST | Django 管理后台 |
 
 ---
 
-## 认证方式
+#### 认证方式
 
 所有 API 均使用 **JWT 认证**（除了需要特殊处理的端点）：
+
 ```
 Authorization: Bearer <token>
 ```
+
+## 数据库结构
+
+[schema.sql](./schema.sql)。
+
+- users (系统用户/认证信息)
+- departments (组织/部门)
+    - parent_id -> departments.id (自关联父级)
+- personnel (人员信息)
+    - user_id -> users.id
+    - department_id -> departments.id
+- categories (物品类别)
+    - parent_id -> categories.id (自关联父级)
+- items (物品基本信息)
+    - category_id -> categories.id
+    - created_by -> personnel.id
+- item_transactions (物品出入库流水)
+    - item_id -> items.id (ON DELETE CASCADE)
+    - operator_id -> personnel.id
+- borrow_records (借用/归还记录)
+    - item_id -> items.id (ON DELETE CASCADE)
+    - borrower_id -> personnel.id (ON DELETE CASCADE)
+    - approver_id -> personnel.id
+- memos (备忘/备注)
+    - author_id -> personnel.id
+    - related_item_id -> items.id
+- finance_records (财务相关记录)
+    - related_item_id -> items.id
+    - recorded_by -> personnel.id
+- email_notices (邮件通知规则/历史)
+- evaluations (物品/服务评价)
+    - related_item_id -> items.id
+    - evaluator_id -> personnel.id
+- attachments (文件附件存储索引表)
+    - uploaded_by -> personnel.id
diff --git a/schema.sql b/schema.sql
new file mode 100644
index 0000000..e1ab51f
--- /dev/null
+++ b/schema.sql
@@ -0,0 +1,228 @@
+-- 用户表（若项目使用 Django auth，可忽略或与 auth_user 对应）
+DROP TABLE IF EXISTS account;
+CREATE TABLE account
+(
+    id         BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    username   VARCHAR(150)    NOT NULL UNIQUE,
+    password   VARCHAR(128)    NOT NULL,
+    email      VARCHAR(254),
+    full_name  VARCHAR(200),
+    is_active  TINYINT(1)      NOT NULL DEFAULT 1,
+    is_staff   TINYINT(1)      NOT NULL DEFAULT 0,
+    created_at DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+) ENGINE = InnoDB
+  DEFAULT CHARSET = utf8mb4
+  COLLATE = utf8mb4_unicode_ci COMMENT ='系统用户/认证信息';
+
+-- 部门表
+DROP TABLE IF EXISTS departments;
+CREATE TABLE departments
+(
+    id          BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    name        VARCHAR(100)    NOT NULL,
+    code        VARCHAR(50),
+    parent_id   BIGINT UNSIGNED,
+    description TEXT,
+    created_at  DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at  DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    CONSTRAINT fk_departments_parent FOREIGN KEY (parent_id) REFERENCES departments (id) ON DELETE SET NULL
+) ENGINE = InnoDB
+  DEFAULT CHARSET = utf8mb4 COMMENT ='组织/部门';
+
+-- 人员表（可映射到 Django 的 profile）
+DROP TABLE IF EXISTS personnel;
+CREATE TABLE personnel
+(
+    id            BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    user_id       BIGINT UNSIGNED, -- 关联  account 表（可为空）
+    employee_no   VARCHAR(64) UNIQUE,
+    name          VARCHAR(100)    NOT NULL,
+    department_id BIGINT UNSIGNED,
+    phone         VARCHAR(50),
+    email         VARCHAR(254),
+    role          VARCHAR(100),
+    is_active     TINYINT(1)      NOT NULL DEFAULT 1,
+    created_at    DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at    DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    CONSTRAINT fk_personnel_user FOREIGN KEY (user_id) REFERENCES account (id) ON DELETE SET NULL,
+    CONSTRAINT fk_personnel_department FOREIGN KEY (department_id) REFERENCES departments (id) ON DELETE SET NULL
+) ENGINE = InnoDB
+  DEFAULT CHARSET = utf8mb4 COMMENT ='人员信息';
+
+-- 物品类别
+DROP TABLE IF EXISTS categories;
+CREATE TABLE categories
+(
+    id          BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    name        VARCHAR(150)    NOT NULL,
+    parent_id   BIGINT UNSIGNED,
+    description TEXT,
+    created_at  DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at  DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    CONSTRAINT fk_categories_parent FOREIGN KEY (parent_id) REFERENCES categories (id) ON DELETE SET NULL
+) ENGINE = InnoDB
+  DEFAULT CHARSET = utf8mb4 COMMENT ='物品类别';
+
+-- 物品（物品主表）
+DROP TABLE IF EXISTS items;
+CREATE TABLE items
+(
+    id                 BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    code               VARCHAR(100)    NOT NULL UNIQUE,           -- 物品编号/资产编号
+    name               VARCHAR(200)    NOT NULL,
+    category_id        BIGINT UNSIGNED,
+    model              VARCHAR(150),
+    brand              VARCHAR(150),
+    location           VARCHAR(200),
+    total_quantity     INT             NOT NULL DEFAULT 0,
+    available_quantity INT             NOT NULL DEFAULT 0,
+    unit               VARCHAR(30)              DEFAULT '件',
+    price              DECIMAL(12, 2)           DEFAULT NULL,
+    purchase_date      DATE                     DEFAULT NULL,
+    supplier           VARCHAR(200)             DEFAULT NULL,
+    status             VARCHAR(50)              DEFAULT 'normal', -- 如 normal/disabled/lost/repair
+    description        TEXT,
+    image_path         VARCHAR(500),
+    created_by         BIGINT UNSIGNED,
+    created_at         DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at         DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    CONSTRAINT fk_items_category FOREIGN KEY (category_id) REFERENCES categories (id) ON DELETE SET NULL,
+    CONSTRAINT fk_items_creator FOREIGN KEY (created_by) REFERENCES personnel (id) ON DELETE SET NULL,
+    INDEX (name),
+    INDEX (code)
+) ENGINE = InnoDB
+  DEFAULT CHARSET = utf8mb4 COMMENT ='物品基本信息';
+
+-- 物品库存/流水（每次入库/出库/调整都记录）
+DROP TABLE IF EXISTS item_transactions;
+CREATE TABLE item_transactions
+(
+    id            BIGINT UNSIGNED                       NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    item_id       BIGINT UNSIGNED                       NOT NULL,
+    trans_type    ENUM ('IN','OUT','ADJUST','TRANSFER') NOT NULL,
+    quantity      INT                                   NOT NULL,
+    from_location VARCHAR(200),
+    to_location   VARCHAR(200),
+    related_id    BIGINT UNSIGNED, -- 可关联采购单/借用记录/调拨单 id
+    operator_id   BIGINT UNSIGNED, -- personnel 操作者
+    note          TEXT,
+    created_at    DATETIME                              NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT fk_trans_item FOREIGN KEY (item_id) REFERENCES items (id) ON DELETE CASCADE,
+    CONSTRAINT fk_trans_operator FOREIGN KEY (operator_id) REFERENCES personnel (id) ON DELETE SET NULL,
+    INDEX (item_id),
+    INDEX (trans_type)
+) ENGINE = InnoDB
+  DEFAULT CHARSET = utf8mb4 COMMENT ='物品出入库与调整流水';
+
+-- 借用记录（借/还）
+DROP TABLE IF EXISTS borrow_records;
+CREATE TABLE borrow_records
+(
+    id          BIGINT UNSIGNED                                   NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    item_id     BIGINT UNSIGNED                                   NOT NULL,
+    borrower_id BIGINT UNSIGNED                                   NOT NULL, -- personnel id
+    quantity    INT                                               NOT NULL DEFAULT 1,
+    borrow_date DATETIME                                          NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    due_date    DATETIME                                                   DEFAULT NULL,
+    return_date DATETIME                                                   DEFAULT NULL,
+    status      ENUM ('BORROWED','RETURNED','OVERDUE','CANCELED') NOT NULL DEFAULT 'BORROWED',
+    approver_id BIGINT UNSIGNED                                            DEFAULT NULL,
+    note        TEXT,
+    created_at  DATETIME                                          NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at  DATETIME                                          NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    CONSTRAINT fk_borrow_item FOREIGN KEY (item_id) REFERENCES items (id) ON DELETE CASCADE,
+    CONSTRAINT fk_borrow_borrower FOREIGN KEY (borrower_id) REFERENCES personnel (id) ON DELETE CASCADE,
+    CONSTRAINT fk_borrow_approver FOREIGN KEY (approver_id) REFERENCES personnel (id) ON DELETE SET NULL,
+    INDEX (borrower_id),
+    INDEX (status)
+) ENGINE = InnoDB
+  DEFAULT CHARSET = utf8mb4 COMMENT ='借用/归还记录';
+
+-- 备忘/便签
+DROP TABLE IF EXISTS memos;
+CREATE TABLE memos
+(
+    id              BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    title           VARCHAR(200),
+    content         TEXT,
+    author_id       BIGINT UNSIGNED,
+    related_item_id BIGINT UNSIGNED,
+    is_public       TINYINT(1)      NOT NULL DEFAULT 0,
+    created_at      DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at      DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    CONSTRAINT fk_memo_author FOREIGN KEY (author_id) REFERENCES personnel (id) ON DELETE SET NULL,
+    CONSTRAINT fk_memo_item FOREIGN KEY (related_item_id) REFERENCES items (id) ON DELETE SET NULL
+) ENGINE = InnoDB
+  DEFAULT CHARSET = utf8mb4 COMMENT ='备忘/备注';
+
+-- 财务记录（采购/报销等）
+DROP TABLE IF EXISTS finance_records;
+CREATE TABLE finance_records
+(
+    id              BIGINT UNSIGNED                                            NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    record_no       VARCHAR(100) UNIQUE,
+    type            ENUM ('PURCHASE','REFUND','REPAIR','DEPRECIATION','OTHER') NOT NULL,
+    related_item_id BIGINT UNSIGNED,
+    amount          DECIMAL(14, 2)                                             NOT NULL DEFAULT 0.00,
+    currency        VARCHAR(10)                                                         DEFAULT 'CNY',
+    vendor          VARCHAR(200),
+    occurred_at     DATETIME,
+    recorded_by     BIGINT UNSIGNED,
+    note            TEXT,
+    created_at      DATETIME                                                   NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT fk_finance_item FOREIGN KEY (related_item_id) REFERENCES items (id) ON DELETE SET NULL,
+    CONSTRAINT fk_finance_user FOREIGN KEY (recorded_by) REFERENCES personnel (id) ON DELETE SET NULL,
+    INDEX (record_no)
+) ENGINE = InnoDB
+  DEFAULT CHARSET = utf8mb4 COMMENT ='财务相关记录';
+
+-- 邮件通知规则/历史
+DROP TABLE IF EXISTS email_notices;
+CREATE TABLE email_notices
+(
+    id            BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    name          VARCHAR(200),
+    target_emails TEXT,         -- 以逗号分隔或 JSON 数组
+    subject       VARCHAR(300),
+    body          TEXT,
+    enabled       TINYINT(1)      NOT NULL DEFAULT 1,
+    schedule_cron VARCHAR(100), -- 若使用定时任务
+    last_sent_at  DATETIME,
+    created_at    DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at    DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+) ENGINE = InnoDB
+  DEFAULT CHARSET = utf8mb4 COMMENT ='邮件通知规则/历史';
+
+-- 评价/反馈（evaluation 模块对应）
+DROP TABLE IF EXISTS evaluations;
+CREATE TABLE evaluations
+(
+    id              BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    related_item_id BIGINT UNSIGNED,
+    evaluator_id    BIGINT UNSIGNED,
+    score           TINYINT UNSIGNED, -- 1-5
+    comment         TEXT,
+    created_at      DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT fk_evaluation_item FOREIGN KEY (related_item_id) REFERENCES items (id) ON DELETE SET NULL,
+    CONSTRAINT fk_evaluation_user FOREIGN KEY (evaluator_id) REFERENCES personnel (id) ON DELETE SET NULL
+) ENGINE = InnoDB
+  DEFAULT CHARSET = utf8mb4 COMMENT ='物品/服务评价';
+
+-- 附件表（文件存储路径）
+DROP TABLE IF EXISTS attachments;
+CREATE TABLE attachments
+(
+    id            BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+    related_table VARCHAR(100),    -- 指示关联表，如 'items','memos'
+    related_id    BIGINT UNSIGNED, -- 关联记录 ID
+    file_name     VARCHAR(300),
+    file_path     VARCHAR(1000),
+    file_size     BIGINT UNSIGNED,
+    content_type  VARCHAR(200),
+    uploaded_by   BIGINT UNSIGNED,
+    uploaded_at   DATETIME        NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT fk_attachments_user FOREIGN KEY (uploaded_by) REFERENCES personnel (id) ON DELETE SET NULL,
+    INDEX (related_table, related_id)
+) ENGINE = InnoDB
+  DEFAULT CHARSET = utf8mb4 COMMENT ='文件附件存储索引表';
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/DataCopy.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/DataCopy.kt
index cd379d8..8108fc1 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/DataCopy.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/DataCopy.kt
@@ -1,56 +1,39 @@
 package club.itstudio.itmanager.entity
 
 import kotlin.reflect.KClass
-import kotlin.reflect.KProperty
+import kotlin.reflect.KMutableProperty1
+import kotlin.reflect.KProperty1
 import kotlin.reflect.full.createInstance
 import kotlin.reflect.full.declaredMemberProperties
 import kotlin.reflect.full.memberProperties
-import kotlin.reflect.jvm.javaField
+import kotlin.reflect.jvm.isAccessible
 
 interface DataCopy {
-
     fun <T : Any> toAnotherObject(
         toClass: KClass<T>,
-        otherProperties: Map<String, Any?>
+        otherProperties: Map<String, Any?> = emptyMap()
     ): T {
-        try {
-            val voProperties = toClass.declaredMemberProperties
+        @Suppress("UNCHECKED_CAST")
+        val sourceProps = this::class.memberProperties
+            .associate { it.name to (it as KProperty1<Any, *>).get(this) }
+        return try {
             val vo = toClass.createInstance()
-            for (voProperty in voProperties)
-                copyFieldData(voProperty, otherProperties, vo)
-            return vo
+            for (prop in toClass.declaredMemberProperties) {
+                @Suppress("UNCHECKED_CAST")
+                val mutableProp = prop as? KMutableProperty1<Any, Any?> ?: continue
+                val value = when {
+                    sourceProps.containsKey(prop.name) -> sourceProps[prop.name]
+                    otherProperties.containsKey(prop.name) -> otherProperties[prop.name]
+                    else -> continue
+                }
+                mutableProp.isAccessible = true
+                mutableProp.set(vo, value)
+            }
+            vo
         } catch (e: ReflectiveOperationException) {
             throw RuntimeException(
-                "${toClass.simpleName} has no fields.",
-                e
+                "Failed to instantiate ${toClass.simpleName}. Does it have a no-arg constructor?", e
             )
         }
     }
-
-    private fun copyFieldData(
-        toProperty: KProperty<*>,
-        otherProperties: Map<String, Any?>,
-        another: Any
-    ) {
-        try {
-            val thisProperty = this::class.memberProperties
-                .firstOrNull { it.name == toProperty.name }
-
-            val value =
-                if (thisProperty != null) {
-                    thisProperty.getter.call(this)
-                } else if (otherProperties.containsKey(toProperty.name))
-                    otherProperties[toProperty.name]
-                else
-                    throw RuntimeException(
-                        "Property ${toProperty.name} not found."
-                    )
-
-            val field = toProperty.javaField!!
-            field.isAccessible = true
-            field.set(another, value)
-        } catch (e: Exception) {
-            e.printStackTrace()
-        }
-    }
 }
\ No newline at end of file
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Account.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Account.kt
index beb8ba9..e60b7e9 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Account.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/entity/dto/Account.kt
@@ -11,10 +11,13 @@ import kotlinx.serialization.Serializable
 @TableName("account")
 data class Account(
     @TableId(type = IdType.AUTO)
-    val id: Int? = null,
+    val id: Long? = null,
     val username: String = "",
     val password: String = "",
-    val email: String = "",
-    val role: String = "",
-    val registerTime: LocalDateTime? = null
+    val email: String? = null,
+    val fullName: String? = null,
+    val isActive: Boolean = true,
+    val isStaff: Boolean = false,
+    val createdAt: LocalDateTime? = null,
+    val updatedAt: LocalDateTime? = null
 ) : DataCopy
\ No newline at end of file
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/AccountServiceImpl.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/AccountServiceImpl.kt
index 4f75139..e909420 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/AccountServiceImpl.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/impl/AccountServiceImpl.kt
@@ -10,7 +10,7 @@ import club.itstudio.itmanager.entity.vo.response.ReloginVO
 import club.itstudio.itmanager.mapper.AccountMapper
 import club.itstudio.itmanager.service.AccountService
 import club.itstudio.itmanager.utils.Const
-import club.itstudio.itmanager.utils.DateUtils.getCurrentDateTime
+
 import club.itstudio.itmanager.utils.FlowUtils
 import club.itstudio.itmanager.utils.JwtUtils
 import org.springframework.amqp.core.AmqpTemplate
@@ -31,7 +31,6 @@ class AccountServiceImpl(
     private val amqpTemplate: AmqpTemplate,
     private val stringRedisTemplate: ReactiveStringRedisTemplate,
     private val encoder: PasswordEncoder
-
 ) : ServiceImpl<AccountMapper, Account>(), AccountService {
 
     override fun findByUsername(username: String): Mono<UserDetails> {
@@ -40,7 +39,7 @@ class AccountServiceImpl(
             .map { account ->
                 User.withUsername(username)
                     .password(account.password)
-                    .roles(account.role)
+                    .roles(if (account.isStaff) "STAFF" else "USER")
                     .build()
             }
     }
@@ -82,7 +81,7 @@ class AccountServiceImpl(
         val (email, code, username, password) = vo
 
         return verifyCode(email, code).flatMap { error ->
-            if (!error.isBlank()) {
+            if (error.isNotBlank()) {
                 return@flatMap Mono.just(error)
             }
 
@@ -98,12 +97,11 @@ class AccountServiceImpl(
 
                     val encodedPassword = encoder.encode(password)
                     val account = Account(
-                        null,
-                        username,
-                        encodedPassword!!,
-                        email,
-                        "user",
-                        getCurrentDateTime()
+                        username = username,
+                        password = encodedPassword!!,
+                        email = email,
+                        isActive = true,
+                        isStaff = false
                     )
 
                     Mono.fromCallable { this.save(account) }
@@ -124,7 +122,7 @@ class AccountServiceImpl(
         val (email, code, password) = vo
 
         return verifyCode(email, code).flatMap { error ->
-            if (!error.isBlank()) {
+            if (error.isNotBlank()) {
                 return@flatMap Mono.just(error)
             }
 
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
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/utils/Const.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/utils/Const.kt
index e42f6cd..e461c5f 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/utils/Const.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/utils/Const.kt
@@ -4,13 +4,14 @@ import reactor.core.publisher.Mono
 
 object Const {
     const val FLOW_LIMIT_ORDER = -101
-    
+
     const val JWT_BLACK_LIST = "jwt:blacklist:"
     const val VERIFY_EMAIL_LIMIT = "verify:email:limit:"
     const val VERIFY_EMAIL_DATA = "verify:email:data:"
 
     const val FLOW_LIMIT_COUNTER = "flow:counter:"
     const val FLOW_LIMIT_BLOCK = "flow:block:"
-    
-    val INTERNAL_ERROR_MONO = Mono.just("something went wrong. Please contact the administrator.")
+
+    const val INTERNAL_ERROR_STR = "something went wrong. Please contact the administrator."
+    val INTERNAL_ERROR_MONO = Mono.just(INTERNAL_ERROR_STR)
 }
\ No newline at end of file
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/utils/JwtUtils.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/utils/JwtUtils.kt
index 919399e..f1f431c 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/utils/JwtUtils.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/utils/JwtUtils.kt
@@ -4,6 +4,7 @@ import com.auth0.jwt.JWT
 import com.auth0.jwt.JWTVerifier
 import com.auth0.jwt.algorithms.Algorithm
 import com.auth0.jwt.interfaces.DecodedJWT
+import org.slf4j.LoggerFactory
 import org.springframework.beans.factory.annotation.Value
 import org.springframework.data.redis.core.StringRedisTemplate
 import org.springframework.security.core.userdetails.User
@@ -16,14 +17,15 @@ import java.util.concurrent.TimeUnit
 class JwtUtils(
     @param:Value($$"${spring.security.jwt.key}")
     private val key: String,
-
     @param:Value($$"${spring.security.jwt.expire-hours}")
     private val expireHours: Int,
 
-    private val template: StringRedisTemplate,
-    private val algorithm: Algorithm = Algorithm.HMAC256(key),
-    private val jwtVerifier: JWTVerifier = JWT.require(algorithm).build()
+    private val template: StringRedisTemplate
 ) {
+    private val algorithm: Algorithm = Algorithm.HMAC256(key)
+    private val jwtVerifier: JWTVerifier = JWT.require(algorithm).build()
+    private val logger = LoggerFactory.getLogger(this::class.java)
+    
     fun invalidateJwt(headerToken: String?): Boolean {
         val token = this.convertToToken(headerToken) ?: return false
         try {
@@ -31,7 +33,7 @@ class JwtUtils(
             val id = jwt.id
             return deleteToken(id, jwt.expiresAt)
         } catch (e: Exception) {
-            println(e.message)
+            logger.error("Error occurred while invalidating JWT", e)
             return false
         }
     }
@@ -62,14 +64,14 @@ class JwtUtils(
             else decodedJWT
             
         } catch (e: Exception) {
-            println(e.message)
+            logger.error("Error occurred while resolving JWT", e)
             return null
         }
     }
 
     fun createJwt(
         details: UserDetails,
-        id: Int,
+        id: Long,
         username: String
     ): String {
         return JWT.create()
@@ -94,7 +96,7 @@ class JwtUtils(
             .build()
     }
 
-    fun toId(jwt: DecodedJWT) = jwt.claims["id"]?.asInt() ?: -1
+    fun toId(jwt: DecodedJWT) = jwt.claims["id"]?.asLong() ?: -1L
 
     fun expiresTime(): Date {
         val cal = Calendar.getInstance()