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# 结伴客系统详细设计文档
2025-08-30 14:33:49 +08:00
## 2.3 数据库配置
### 2.3.1 测试环境
- **主机**: 192.168.0.240 (MySQL主机地址)
- **端口**: 3306 (MySQL端口)
- **用户名**: root
- **密码**: aiot$Aiot123
- **数据库**: jiebandata
### 2.3.2 生产环境
- **主机**: 129.211.213.226
- **端口**: 9527
- **用户名**: root
- **密码**: aiotAiot123!
- **数据库**: jiebandata
## 1. 数据库设计
### 1.1 ER图
```mermaid
erDiagram
USERS ||--o{ TRAVEL_PLANS : creates
USERS ||--o{ ANIMAL_CLAIMS : claims
USERS ||--o{ MESSAGES : sends
USERS ||--o{ ORDERS : places
USERS ||--o{ REVIEWS : writes
MERCHANTS ||--o{ PRODUCTS : sells
MERCHANTS ||--o{ ORDERS : processes
MERCHANTS ||--o{ ACTIVITIES : organizes
MERCHANTS ||--o{ ANIMALS : manages
TRAVEL_PLANS ||--o{ TRAVEL_MATCHES : matches
ANIMALS ||--o{ ANIMAL_CLAIMS : claimed
ANIMALS ||--o{ ANIMAL_UPDATES : updates
PRODUCTS ||--o{ ORDER_ITEMS : contains
ORDERS ||--o{ ORDER_ITEMS : contains
ORDERS ||--o{ PAYMENTS : has
ACTIVITIES ||--o{ ACTIVITY_REGISTRATIONS : registers
USERS {
int id PK
string openid
string nickname
string avatar
string gender
date birthday
string phone
string email
datetime created_at
datetime updated_at
}
MERCHANTS {
int id PK
int user_id FK
string merchant_type
string business_name
string business_license
string contact_person
string contact_phone
string address
string description
string status
datetime created_at
datetime updated_at
}
TRAVEL_PLANS {
int id PK
int user_id FK
string destination
date start_date
date end_date
decimal budget
string interests
string visibility
datetime created_at
datetime updated_at
}
TRAVEL_MATCHES {
int id PK
int plan_id FK
int matched_plan_id FK
decimal match_score
datetime created_at
}
ANIMALS {
int id PK
int merchant_id FK
string name
string species
string breed
date birth_date
string personality
string farm_location
decimal price
string status
datetime created_at
datetime updated_at
}
ANIMAL_CLAIMS {
int id PK
int user_id FK
int animal_id FK
decimal price_paid
string agreement_url
string status
datetime claimed_at
datetime ended_at
}
ANIMAL_UPDATES {
int id PK
int animal_id FK
string update_type
string content
string media_url
datetime created_at
}
PRODUCTS {
int id PK
int merchant_id FK
string name
string description
decimal price
string image_url
string category
string status
datetime created_at
datetime updated_at
}
ORDERS {
int id PK
int user_id FK
int merchant_id FK
string order_number
decimal total_amount
string status
string delivery_address
datetime ordered_at
datetime completed_at
}
ORDER_ITEMS {
int id PK
int order_id FK
int product_id FK
int quantity
decimal unit_price
}
PAYMENTS {
int id PK
int order_id FK
string payment_method
string transaction_id
decimal amount
string status
datetime paid_at
}
MESSAGES {
int id PK
int sender_id FK
int receiver_id FK
string content
string status
datetime sent_at
}
REVIEWS {
int id PK
int user_id FK
int merchant_id FK
int order_id FK
int rating
string comment
datetime created_at
}
ACTIVITIES {
int id PK
int merchant_id FK
string title
string description
string activity_type
datetime start_time
datetime end_time
string location
decimal fee
int max_participants
string status
datetime created_at
datetime updated_at
}
ACTIVITY_REGISTRATIONS {
int id PK
int activity_id FK
int user_id FK
string status
datetime registered_at
}
```
### 1.2 核心表结构设计
#### 用户表 (users)
| 字段名 | 类型 | 约束 | 描述 |
|--------|------|------|------|
| id | INT | PRIMARY KEY, AUTO_INCREMENT | 用户ID |
| openid | VARCHAR(64) | UNIQUE, NOT NULL | 微信openid |
| nickname | VARCHAR(50) | NOT NULL | 用户昵称 |
| avatar | VARCHAR(255) | | 用户头像URL |
| gender | ENUM('male', 'female', 'other') | | 性别 |
| birthday | DATE | | 生日 |
| phone | VARCHAR(20) | UNIQUE | 手机号码 |
| email | VARCHAR(100) | UNIQUE | 邮箱地址 |
| created_at | DATETIME | NOT NULL | 创建时间 |
| updated_at | DATETIME | NOT NULL | 更新时间 |
### 管理员相关表
#### ROLES 表(角色表)
| 字段名 | 类型 | 约束 | 描述 |
|--------|------|------|------|
| id | INT | PRIMARY KEY, AUTO_INCREMENT | 角色ID |
| name | VARCHAR(50) | UNIQUE, NOT NULL | 角色名称 |
| description | TEXT | | 角色描述 |
| created_at | TIMESTAMP | DEFAULT CURRENT_TIMESTAMP | 创建时间 |
| updated_at | TIMESTAMP | DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP | 更新时间 |
**数据示例**:
- super_admin: 超级管理员,拥有系统所有权限
- admin: 普通管理员,拥有部分管理权限
- content_manager: 内容管理员,负责内容审核和管理
#### PERMISSIONS 表(权限表)
| 字段名 | 类型 | 约束 | 描述 |
|--------|------|------|------|
| id | INT | PRIMARY KEY, AUTO_INCREMENT | 权限ID |
| name | VARCHAR(100) | UNIQUE, NOT NULL | 权限名称 |
| description | TEXT | | 权限描述 |
| module | VARCHAR(50) | NOT NULL | 所属模块 |
| created_at | TIMESTAMP | DEFAULT CURRENT_TIMESTAMP | 创建时间 |
| updated_at | TIMESTAMP | DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP | 更新时间 |
**权限列表**:
- user:manage - 用户管理权限
- role:manage - 角色管理权限
- permission:manage - 权限管理权限
- content:review - 内容审核权限
- content:publish - 内容发布权限
- data:view - 数据查看权限
- data:export - 数据导出权限
- system:config - 系统配置权限
#### ROLE_PERMISSIONS 表(角色权限关联表)
| 字段名 | 类型 | 约束 | 描述 |
|--------|------|------|------|
| id | BIGINT | PRIMARY KEY, AUTO_INCREMENT | 关联ID |
| role_id | INT | FOREIGN KEY REFERENCES roles(id) | 角色ID |
| permission_id | INT | FOREIGN KEY REFERENCES permissions(id) | 权限ID |
| created_at | TIMESTAMP | DEFAULT CURRENT_TIMESTAMP | 创建时间 |
#### USER_ROLES 表(用户角色关联表)
| 字段名 | 类型 | 约束 | 描述 |
|--------|------|------|------|
| id | BIGINT | PRIMARY KEY, AUTO_INCREMENT | 关联ID |
| user_id | BIGINT | FOREIGN KEY REFERENCES users(id) | 用户ID |
| role_id | INT | FOREIGN KEY REFERENCES roles(id) | 角色ID |
| created_at | TIMESTAMP | DEFAULT CURRENT_TIMESTAMP | 创建时间 |
### 权限分配关系
```mermaid
erDiagram
USERS ||--o{ USER_ROLES : has
ROLES ||--o{ USER_ROLES : assigned_to
ROLES ||--o{ ROLE_PERMISSIONS : has
PERMISSIONS ||--o{ ROLE_PERMISSIONS : granted_to
USERS {
bigint id
varchar username
varchar email
enum status
timestamp created_at
}
ROLES {
int id
varchar name
text description
timestamp created_at
}
PERMISSIONS {
int id
varchar name
varchar module
text description
timestamp created_at
}
USER_ROLES {
bigint id
bigint user_id
int role_id
timestamp created_at
}
ROLE_PERMISSIONS {
bigint id
int role_id
int permission_id
timestamp created_at
}
```
### 管理员功能说明
1. **用户管理模块**: 查看用户列表、管理用户状态、用户数据分析
2. **内容管理模块**: 内容审核、内容发布管理、违规内容处理
3. **数据统计模块**: 系统数据查看、数据导出、运营报表生成
4. **权限管理模块**: 角色管理、权限分配、用户权限设置
### 安全设计
- 管理员登录采用JWT令牌认证
- 接口权限基于RBAC模型控制
- 敏感操作记录审计日志
- 密码采用bcrypt加密存储
#### 商家表 (merchants)
| 字段名 | 类型 | 约束 | 描述 |
|--------|------|------|------|
| id | INT | PRIMARY KEY, AUTO_INCREMENT | 商家ID |
| user_id | INT | FOREIGN KEY, NOT NULL | 关联的用户ID |
| merchant_type | ENUM('flower_shop', 'activity_organizer', 'farm_owner') | NOT NULL | 商家类型 |
| business_name | VARCHAR(100) | NOT NULL | 商家名称 |
| business_license | VARCHAR(255) | | 营业执照图片URL |
| contact_person | VARCHAR(50) | NOT NULL | 联系人 |
| contact_phone | VARCHAR(20) | NOT NULL | 联系电话 |
| address | VARCHAR(255) | | 地址 |
| description | TEXT | | 商家介绍 |
| status | ENUM('pending', 'approved', 'rejected', 'suspended') | NOT NULL | 商家状态 |
| created_at | DATETIME | NOT NULL | 创建时间 |
| updated_at | DATETIME | NOT NULL | 更新时间 |
#### 旅行计划表 (travel_plans)
| 字段名 | 类型 | 约束 | 描述 |
|--------|------|------|------|
| id | INT | PRIMARY KEY, AUTO_INCREMENT | 计划ID |
| user_id | INT | FOREIGN KEY, NOT NULL | 用户ID |
| destination | VARCHAR(100) | NOT NULL | 目的地 |
| start_date | DATE | NOT NULL | 开始日期 |
| end_date | DATE | NOT NULL | 结束日期 |
| budget | DECIMAL(10,2) | NOT NULL | 预算 |
| interests | TEXT | | 兴趣偏好 |
| visibility | ENUM('public', 'friends', 'private') | NOT NULL | 可见范围 |
| created_at | DATETIME | NOT NULL | 创建时间 |
| updated_at | DATETIME | NOT NULL | 更新时间 |
#### 动物表 (animals)
| 字段名 | 类型 | 约束 | 描述 |
|--------|------|------|------|
| id | INT | PRIMARY KEY, AUTO_INCREMENT | 动物ID |
| merchant_id | INT | FOREIGN KEY, NOT NULL | 关联的农场商家ID |
| name | VARCHAR(50) | NOT NULL | 动物名称 |
| species | VARCHAR(50) | NOT NULL | 动物种类 |
| breed | VARCHAR(50) | | 品种 |
| birth_date | DATE | | 出生日期 |
| personality | TEXT | | 性格特点 |
| farm_location | VARCHAR(255) | | 农场位置 |
| price | DECIMAL(10,2) | NOT NULL | 认领价格 |
| status | ENUM('available', 'claimed', 'unavailable') | NOT NULL | 状态 |
| created_at | DATETIME | NOT NULL | 创建时间 |
| updated_at | DATETIME | NOT NULL | 更新时间 |
#### 动物认领表 (animal_claims)
| 字段名 | 类型 | 约束 | 描述 |
|--------|------|------|------|
| id | INT | PRIMARY KEY, AUTO_INCREMENT | 认领ID |
| user_id | INT | FOREIGN KEY, NOT NULL | 用户ID |
| animal_id | INT | FOREIGN KEY, NOT NULL | 动物ID |
| price_paid | DECIMAL(10,2) | NOT NULL | 支付金额 |
| agreement_url | VARCHAR(255) | | 电子协议URL |
| status | ENUM('active', 'ended', 'cancelled') | NOT NULL | 认领状态 |
| claimed_at | DATETIME | NOT NULL | 认领时间 |
| ended_at | DATETIME | | 结束时间 |
#### 管理员操作日志表 (admin_operation_logs)
| 字段名 | 类型 | 约束 | 描述 |
|--------|------|------|------|
| id | BIGINT | PRIMARY KEY, AUTO_INCREMENT | 日志ID |
| admin_id | BIGINT | FOREIGN KEY REFERENCES users(id), NOT NULL | 管理员ID |
| admin_name | VARCHAR(50) | NOT NULL | 管理员姓名 |
| module | VARCHAR(50) | NOT NULL | 操作模块 |
| operation | VARCHAR(100) | NOT NULL | 操作类型 |
| target_id | VARCHAR(100) | | 目标对象ID |
| target_type | VARCHAR(50) | | 目标对象类型 |
| request_method | VARCHAR(10) | | 请求方法 |
| request_url | VARCHAR(500) | | 请求URL |
| request_params | TEXT | | 请求参数 |
| ip_address | VARCHAR(45) | | IP地址 |
| user_agent | VARCHAR(500) | | 用户代理 |
| status | ENUM('success', 'failed') | NOT NULL | 操作状态 |
| error_message | TEXT | | 错误信息 |
| execution_time | INT | | 执行时间(ms) |
| created_at | DATETIME | NOT NULL | 创建时间 |
**操作类型示例**:
- user:create - 创建用户
- user:update - 更新用户
- user:delete - 删除用户
- role:create - 创建角色
- role:update - 更新角色
- role:delete - 删除角色
- permission:assign - 分配权限
- content:review - 内容审核
- content:publish - 内容发布
- data:export - 数据导出
- system:config - 系统配置
**目标对象类型示例**:
- user - 用户
- role - 角色
- permission - 权限
- content - 内容
- merchant - 商家
- animal - 动物
- travel_plan - 旅行计划
- order - 订单
## 2. API设计
### 2.1 用户服务API
#### 用户登录
- **URL**: `POST /api/v1/users/login`
- **请求参数**:
```json
{
"code": "微信登录凭证"
}
```
- **响应**:
```json
{
"code": 0,
"message": "success",
"data": {
"token": "用户token",
"user": {
"id": 1,
"openid": "openid",
"nickname": "用户昵称",
"avatar": "头像URL"
}
}
}
```
#### 获取用户信息
- **URL**: `GET /api/v1/users/profile`
- **请求头**: `Authorization: Bearer {token}`
- **响应**:
```json
{
"code": 0,
"message": "success",
"data": {
"id": 1,
"openid": "openid",
"nickname": "用户昵称",
"avatar": "头像URL",
"gender": "male",
"birthday": "1990-01-01",
"phone": "13800138000",
"email": "user@example.com"
}
}
```
#### 更新用户信息
- **URL**: `PUT /api/v1/users/profile`
- **请求头**: `Authorization: Bearer {token}`
- **请求参数**:
```json
{
"nickname": "新昵称",
"gender": "female",
"birthday": "1995-01-01",
"phone": "13900139000",
"email": "new@example.com"
}
```
- **响应**:
```json
{
"code": 0,
"message": "success",
"data": {}
}
```
### 2.2 旅行服务API
#### 创建旅行计划
- **URL**: `POST /api/v1/travels/plans`
- **请求头**: `Authorization: Bearer {token}`
- **请求参数**:
```json
{
"destination": "目的地",
"start_date": "2023-10-01",
"end_date": "2023-10-07",
"budget": 5000.00,
"interests": "徒步,摄影",
"visibility": "public"
}
```
- **响应**:
```json
{
"code": 0,
"message": "success",
"data": {
"id": 1,
"user_id": 1,
"destination": "目的地",
"start_date": "2023-10-01",
"end_date": "2023-10-07",
"budget": 5000.00,
"interests": "徒步,摄影",
"visibility": "public",
"created_at": "2023-09-01T12:00:00Z"
}
}
```
#### 获取旅行计划列表
- **URL**: `GET /api/v1/travels/plans`
- **请求头**: `Authorization: Bearer {token}`
- **查询参数**: `page=1&size=10&visibility=public`
- **响应**:
```json
{
"code": 0,
"message": "success",
"data": {
"list": [
{
"id": 1,
"user_id": 1,
"destination": "目的地",
"start_date": "2023-10-01",
"end_date": "2023-10-07",
"budget": 5000.00,
"interests": "徒步,摄影",
"visibility": "public",
"created_at": "2023-09-01T12:00:00Z"
}
],
"pagination": {
"page": 1,
"size": 10,
"total": 1
}
}
}
```
#### 匹配旅行伙伴
- **URL**: `GET /api/v1/travels/matches`
- **请求头**: `Authorization: Bearer {token}`
- **查询参数**: `plan_id=1&page=1&size=10`
- **响应**:
```json
{
"code": 0,
"message": "success",
"data": {
"list": [
{
"id": 2,
"user_id": 2,
"destination": "目的地",
"start_date": "2023-10-02",
"end_date": "2023-10-08",
"budget": 4500.00,
"interests": "徒步,美食",
"match_score": 0.85
}
],
"pagination": {
"page": 1,
"size": 10,
"total": 1
}
}
}
```
### 2.3 动物认领服务API
#### 获取可认领动物列表
- **URL**: `GET /api/v1/animals`
- **请求头**: `Authorization: Bearer {token}`
- **查询参数**: `page=1&size=10&species=羊驼`
- **响应**:
```json
{
"code": 0,
"message": "success",
"data": {
"list": [
{
"id": 1,
"merchant_id": 1,
"name": "小羊驼",
"species": "羊驼",
"breed": "苏利羊驼",
"birth_date": "2020-01-01",
"personality": "温顺可爱",
"farm_location": "XX农场",
"price": 1000.00,
"status": "available"
}
],
"pagination": {
"page": 1,
"size": 10,
"total": 1
}
}
}
```
#### 认领动物
- **URL**: `POST /api/v1/animals/{id}/claim`
- **请求头**: `Authorization: Bearer {token}`
- **请求参数**:
```json
{
"price_paid": 1000.00
}
```
- **响应**:
```json
{
"code": 0,
"message": "success",
"data": {
"id": 1,
"user_id": 1,
"animal_id": 1,
"price_paid": 1000.00,
"agreement_url": "https://example.com/agreement.pdf",
"status": "active",
"claimed_at": "2023-09-01T12:00:00Z"
}
}
```
#### 获取认领记录
- **URL**: `GET /api/v1/animals/claims`
- **请求头**: `Authorization: Bearer {token}`
- **查询参数**: `page=1&size=10&status=active`
- **响应**:
```json
{
"code": 0,
"message": "success",
"data": {
"list": [
{
"id": 1,
"user_id": 1,
"animal_id": 1,
"animal_name": "小羊驼",
"price_paid": 1000.00,
"status": "active",
"claimed_at": "2023-09-01T12:00:00Z"
}
],
"pagination": {
"page": 1,
"size": 10,
"total": 1
}
}
}
```
### 2.4 商家服务API
#### 商家注册
- **URL**: `POST /api/v1/merchants/register`
- **请求头**: `Authorization: Bearer {token}`
- **请求参数**:
```json
{
"merchant_type": "farm_owner",
"business_name": "XX农场",
"business_license": "https://example.com/license.jpg",
"contact_person": "张三",
"contact_phone": "13800138000",
"address": "北京市朝阳区XX路XX号",
"description": "专业养殖羊驼的农场"
}
```
- **响应**:
```json
{
"code": 0,
"message": "success",
"data": {
"id": 1,
"user_id": 1,
"merchant_type": "farm_owner",
"business_name": "XX农场",
"business_license": "https://example.com/license.jpg",
"contact_person": "张三",
"contact_phone": "13800138000",
"address": "北京市朝阳区XX路XX号",
"description": "专业养殖羊驼的农场",
"status": "pending",
"created_at": "2023-09-01T12:00:00Z"
}
}
```
#### 发布商品/服务
- **URL**: `POST /api/v1/merchants/products`
- **请求头**: `Authorization: Bearer {token}`
- **请求参数**:
```json
{
"name": "羊驼认领体验",
"description": "提供一个月的羊驼认领体验服务",
"price": 1000.00,
"image_url": "https://example.com/product.jpg",
"category": "animal_claim",
"status": "available"
}
```
- **响应**:
```json
{
"code": 0,
"message": "success",
"data": {
"id": 1,
"merchant_id": 1,
"name": "羊驼认领体验",
"description": "提供一个月的羊驼认领体验服务",
"price": 1000.00,
"image_url": "https://example.com/product.jpg",
"category": "animal_claim",
"status": "available",
"created_at": "2023-09-01T12:00:00Z"
}
}
```
#### 获取商家订单
- **URL**: `GET /api/v1/merchants/orders`
- **请求头**: `Authorization: Bearer {token}`
- **查询参数**: `page=1&size=10&status=paid`
- **响应**:
```json
{
"code": 0,
"message": "success",
"data": {
"list": [
{
"id": 1,
"user_id": 2,
"order_number": "ORD202309010001",
"total_amount": 1000.00,
"status": "paid",
"ordered_at": "2023-09-01T12:00:00Z"
}
],
"pagination": {
"page": 1,
"size": 10,
"total": 1
}
}
}
```
### 2.5 官网系统API
#### 提交商家入驻申请
- **URL**: `POST /api/v1/website/merchant/apply`
- **请求参数**:
```json
{
"business_name": "XX农场",
"contact_person": "张三",
"contact_phone": "13800138000",
"email": "zhangsan@example.com",
"description": "专业养殖羊驼的农场"
}
```
- **响应**:
```json
{
"code": 0,
"message": "success",
"data": {
"id": 1,
"business_name": "XX农场",
"contact_person": "张三",
"contact_phone": "13800138000",
"email": "zhangsan@example.com",
"description": "专业养殖羊驼的农场",
"status": "pending",
"created_at": "2023-09-01T12:00:00Z"
}
}
```
#### 获取成功案例列表
- **URL**: `GET /api/v1/website/cases`
- **查询参数**: `page=1&size=10`
- **响应**:
```json
{
"code": 0,
"message": "success",
"data": {
"list": [
{
"id": 1,
"title": "XX农场成功入驻案例",
"description": "XX农场通过平台实现了数字化转型",
"image_url": "https://example.com/case1.jpg",
"created_at": "2023-09-01T12:00:00Z"
}
],
"pagination": {
"page": 1,
"size": 10,
"total": 1
}
}
}
```
"image_url": "https://example.com/product.jpg",
"category": "animal_claim",
"status": "available",
"created_at": "2023-09-01T12:00:00Z"
}
}
```
#### 获取商家订单
- **URL**: `GET /api/v1/merchants/orders`
- **请求头**: `Authorization: Bearer {token}`
- **查询参数**: `page=1&size=10&status=paid`
- **响应**:
```json
{
"code": 0,
"message": "success",
"data": {
"list": [
{
"id": 1,
"user_id": 2,
"order_number": "ORD202309010001",
"total_amount": 1000.00,
"status": "paid",
"ordered_at": "2023-09-01T12:00:00Z"
}
],
"pagination": {
"page": 1,
"size": 10,
"total": 1
}
}
}
```
## 3. 核心业务逻辑设计
### 3.1 旅行结伴流程
```mermaid
sequenceDiagram
participant U as 用户
participant TP as 旅行计划服务
participant TM as 旅行匹配服务
participant N as 通知服务
U->>TP: 创建旅行计划
TP->>TP: 保存计划
TP-->>U: 返回计划详情
U->>TM: 请求匹配旅行伙伴
TM->>TM: 根据条件匹配
TM-->>U: 返回匹配结果
U->>U: 选择合适的伙伴
U->>N: 发送结伴邀请
N->>N: 发送通知给被邀请用户
Note over U,N: 被邀请用户接受邀请后,
Note over U,N: 系统创建结伴关系
```
### 3.2 动物认领流程
```mermaid
sequenceDiagram
participant U as 用户
participant A as 动物服务
participant M as 商家服务
participant P as 支付服务
participant N as 通知服务
U->>A: 浏览可认领动物
A-->>U: 返回动物列表
U->>A: 选择动物并认领
A->>P: 创建支付订单
P-->>U: 返回支付信息
U->>P: 完成支付
P->>P: 验证支付结果
P->>A: 通知支付成功
A->>A: 更新动物状态为已认领
A->>M: 通知商家有新认领
A->>N: 发送认领成功通知给用户
M->>M: 更新商家统计信息
N->>N: 发送通知
```
### 3.3 商家服务流程
```mermaid
sequenceDiagram
participant U as 用户
participant M as 商家服务
participant P as 商品服务
participant O as 订单服务
participant Pay as 支付服务
participant N as 通知服务
U->>M: 申请成为商家
M->>M: 审核商家资质
M-->>U: 返回审核结果
alt 审核通过
U->>P: 发布商品/服务
P->>P: 保存商品信息
P-->>U: 返回商品详情
end
U->>P: 浏览商品
P-->>U: 返回商品列表
U->>O: 下单购买
O->>Pay: 创建支付订单
Pay-->>U: 返回支付信息
U->>Pay: 完成支付
Pay->>Pay: 验证支付结果
Pay->>O: 通知支付成功
O->>O: 更新订单状态
O->>M: 通知商家有新订单
O->>N: 发送购买成功通知给用户
M->>M: 处理订单
N->>N: 发送通知
```