PlantUML——4.实例演示1

@startuml

Alice -> Alice : This is a signal to self.\nIt also demonstrates \nmultiline text.

@enduml

@startuml
title 各种参与者

‘角色
actor Foo1        
‘边界
boundary Foo2    
‘控制
control Foo3    
‘实体
entity Foo4        
‘数据库
database Foo5
‘一般参与者
participant Foo6    

Foo1 -> Foo2 : To boundary
Foo1 -> Foo3 : To control
Foo1 -> Foo4 : To entity
Foo1 -> Foo5 : To database
Foo1 -> Foo6 : To participant

@enduml

@startuml

title 各种箭头

/‘
? add a final x to denote a lost message
? use \ or / instead of < or > to have only the bottom or top part of the arrow
? repeat the arrow head (for example, >> or //) head to have a thin drawing
? use -- instead of - to have a dotted arrow
? add a final ”o” at arrow head
? use bidirectional arrow
‘/

actor Bob as B
actor Alice as A

B ->x A
B ->  A
B ->> A
B -\  A
B \\- A
B //--A

B ->o A
B o\\--A

B <-> A
B <->o A

@enduml

@startuml
‘标题
title 综合：标题、别名、序列、颜色、图列

‘别名，配色
actor Bob as B #red
actor Alice as A #green

‘消息序列编号
autonumber 2

’箭头颜色
B -[#red]> A : hello
B --[#black]> A : hello2
B <[#0000FF]- A : ok

‘图例说明
legend right
这是一个图例说明
endlegend

@enduml