使用 VPasCode 工具的 14 种 UML 图类型实用指南

@startuml
class Customer {
  +id: String
  +email: String
  +placeOrder(): Order
}

class Order {
  +number: String
  +status: OrderStatus
  +total(): Money
}

class OrderLine {
  +quantity: int
  +unitPrice: Money
}

class Product {
  +sku: String
  +name: String
}

Customer "1" -- "0..*" Order : places
Order "1" *-- "1..*" OrderLine : contains
OrderLine "*" --> "1" Product : refers to
@enduml

@startuml
object "alice:Customer" as alice {
  id = C104
  email = [email protected]
}

object "order:Order" as order {
  number = O9001
  status = PAID
}

object "line:OrderLine" as line {
  quantity = 2
  unitPrice = 19.99
}

object "mug:Product" as mug {
  sku = MUG-01
  name = Travel mug
}

alice -- order
order *-- line
line --> mug
@enduml

@startuml
component "Web Store" as web
component "Order Service" as orders
component "Payment Adapter" as payments
database "Order DB" as db
cloud "Payment Provider" as provider

web --> orders : REST
orders --> db : SQL
orders --> payments : authorize
payments --> provider : HTTPS
@enduml

@startuml
allowmixing
skinparam componentStyle rectangle

class Car {
}

package "Car" {
  component "engine : Engine" as engine {
    portout p1
  }

  component "transmission : Transmission" as trans {
    portin p2
    portout p3
  }

  component "wheel : Wheel [4]" as wheels {
    portin p4
  }

  p1 -- p2 : drives
  p3 -- p4 : power
}

@enduml

@startuml
node "Customer device" as client {
  artifact "Browser"
}

node "Cloud" {
  node "Application host" as appHost {
    artifact "Store API"
  }
  database "Order database" as db
}

cloud "External payment provider" as pay

client --> appHost : HTTPS
appHost --> db : SQL
appHost --> pay : HTTPS
@enduml

@startuml
package "store.web" {
  class CheckoutController
}

package "store.application" {
  class PlaceOrder
}

package "store.domain" {
  class Order
  class Product
}

package "store.persistence" {
  class OrderRepository
}

CheckoutController ..> PlaceOrder
PlaceOrder ..> Order
PlaceOrder ..> OrderRepository
@enduml

@startuml
class "«profile» StoreProfile" as Profile
class "«stereotype» «Service»" as Service
class "«stereotype» «Repository»" as Repository
class "«metaclass» Component" as Component

Profile ..> Service : defines
Profile ..> Repository : defines
Service ..> Component : extends
Repository ..> Component : extends

note right of Service
  tagged value:
  owner: String
end note
@enduml

@startuml
方向：从左到右
参与者 客户
参与者 "支付提供商" 作为 Provider

矩形 "在线商店" {
  用例 "浏览商品" 作为 Browse
  用例 "下订单" 作为 Place
  用例 "支付订单" 作为 Pay
  用例 "追踪订单" 作为 Track
}

客户 --> Browse
客户 --> Place
客户 --> Track
Provider --> Pay
Place ..> Pay : <<include>>
@enduml

@startuml
开始
:选择商品;
:输入配送详情;
:计算总价;

if (商品是否可用？) then (是)
  :授权支付;
  if (支付是否获批？) then (是)
    :创建订单;
    :发送确认;
  else (否)
    :显示支付错误;
  endif
else (否)
  :显示不可用商品;
endif

结束
@enduml

@startuml
[*] --> 草稿
草稿 --> 待支付 : 提交
待支付 --> 已支付 : 支付获批
待支付 --> 已取消 : 支付被拒
待支付 --> 已取消 : 客户取消
已支付 --> 已发货 : 发货
已发货 --> 已送达 : 配送确认
已取消 --> [*]
已送达 --> [*]
@enduml

@startuml
参与者 客户
参与者 "Web 商店" 作为 Web
参与者 "订单服务" 作为 Orders
参与者 "支付服务" 作为 Payments

客户 -> Web : 提交结账
Web -> Orders : 创建订单
Orders -> Payments : 授权支付
Payments --> Orders : 已批准
Orders --> Web : 订单确认
Web --> Customer : 显示确认
@enduml

@startuml
对象 客户
对象 WebStore
对象 OrderService
对象 PaymentService

客户 --> WebStore : 1: checkout()
WebStore --> OrderService : 1.1: createOrder()
OrderService --> PaymentService : 1.2: authorize()
PaymentService --> OrderService : 1.3: approved
OrderService --> WebStore : 1.4: confirmation
@enduml

@startuml
skinparam conditionStyle InsideDiamond

title 交互概览图：订单处理系统

start

:客户下订单;

if (商品是否有库存？) then (是)
  
  partition "sd 结账序列" {
    :授权支付;
    :扣减库存;
  }
  
else (否)
  
  partition "sd 缺货处理流程" {
    :通知客户;
    :生成供应商请求;
  }
  
endif

fork
  partition "sd 发货序列" {
    :打包订单;
    :发货到地址;
  }
fork again
  partition "sd 计费序列" {
    :生成发票;
    :发送收据邮件;
  }
end fork

:关闭订单;

stop
@enduml

@startuml
robust "订单" as Order
concise "支付" as Payment

@0
订单为草稿
支付为空闲

@5
订单为待处理
支付为处理中

@10
支付已批准

@12
订单已确认
@enduml