PlantUML 是基于 Java 语言的开源 UML（Unified Modeling Language）图形绘制工具,可以嵌入 Markdown 以及 HTML

安装

windows可以通过scoop或chocolatey安装

scoop install graphviz
choco install graphviz

vscode可以安装2个扩展插件：

• Markdown Preview Enhanced
• PlantUML

类型

流程图

@startuml

start
:new page;
if (Page.onSecurityCheck) then (true)
  :Page.onInit();
  if (isForward?) then (no)
    if (continue processing?) then (no)
      stop
    endif

    if (isPost?) then (yes)
      :Page.onPost();
    else (no)
      :Page.onGet();
    endif
    :Page.onRender();
  endif
else (false)
endif

stop

@enduml

时序图

@startuml

== Initialization ==

Alice -> Bob: : Can you solve: <math>ax^2+bx+c=0</math>
Bob --> Alice: <math>x = (-b+-sqrt(b^2-4ac))/(2a)</math>
activate Alice #FFBBBB
note left: this is a first note

Alice -> Bob: Another dialogue
deactivate Alice

Alice <-- Bob: Another dialogue

@enduml

类图

@startuml
Class01 <|-- Class02
Class03 *-- Class04
Class05 o-- Class06
Class07 .. Class08
Class09 -- Class10
@enduml

ER图

@startuml

' hide the spot
hide circle

' avoid problems with angled crows feet
skinparam linetype ortho

entity "Entity01" as e01 {
  *e1_id : number <<generated>>
  --
  *name : text
  description : text
}

entity "Entity02" as e02 {
  *e2_id : number <<generated>>
  --
  *e1_id : number <<FK>>
  other_details : text
}

entity "Entity03" as e03 {
  *e3_id : number <<generated>>
  --
  e1_id : number <<FK>>
  other_details : text
}

e01 ||..o{ e02
e01 |o..o{ e03

@enduml

引用

【1】知乎