plantuml画图实现代码画时序图UML用例图

@startuml
title Sequence Diagram of User login
actor User as user
participant "gateway" as gateway
participant "user-core" as userCore
database "Mysql" as mysql
database "Redis" as redis
autonumber
user-> gateway:login request，param：username，passWord
activate gateway
gateway-> userCore:forward the login request
activate userCore
userCore-> userCore :check the login param
userCore-> mysql:query user info from mysql by username
activate mysql
mysql-> userCore:response with username and password
deactivate mysql
userCore->userCore:compare the requested password with the DB's password
userCore-> userCore: generate an unique token
userCore--> redis: save the token to redis
userCore-> gateway: response with the token
deactivate userCore
gateway-> user: login success with the token
deactivate gateway
@enduml

@startuml
title Sequence Diagram of User login
actor User as user
participant "gateway" as gateway
participant "user-core" as userCore
database "MySQL" as mysql
database "Redis" as redis
autonumber
user-> gateway:login request，param：username，password
activate gateway
gateway-> userCore:forward the login request
activate userCore
userCore-> userCore :check the login param
userCore-> mysql:query user info from mysql by username
activate mysql
mysql-> userCore:response with username and password
deactivate mysql
userCore->userCore:compare the requested password with the DB's password
userCore-> userCore: generate an unique token
userCore--> redis: save the token to redis
userCore-> gateway: response with the token
deactivate userCore
gateway-> user: login success with the token
deactivate gateway
@enduml

@startuml
Alice -> Bob: 认证请求
alt 登录成功
    Bob -> Alice: 认证接受
else 某种失败情况
    Bob -> Alice: 认证失败
    group 我自己的标签
    Alice -> Log : 开始记录攻击日志
        loop 1000次
            Alice -> Bob: DNS 攻击
        end
    Alice -> Log : 结束记录攻击日志
    end
else 另一种失败
   Bob -> Alice: 请重复
end
@enduml

@startuml
left to right direction
actor Guest as g
package Professional {
  actor Chef as c
  actor "Food Critic" as fc
}
package Restaurant {
  usecase "Eat Food" as UC1
  usecase "Pay for Food" as UC2
  usecase "Drink" as UC3
  usecase "Review" as UC4
}
fc --> UC4
g --> UC1
g --> UC2
g --> UC3
@enduml

@startmindmap
* 
** 计算机网络面试题
*** tcp/IP十五连问
*** 两万字计算机面试题汇总
** MySQL面试题
** Redis面试题
** 大厂面试真题
*** 虾皮十五连问
*** 五年Oppo后端面试真题
*** 腾讯云十五连问
@endmindmap

@startuml
title Activity Diagram of User login
start
:user request login;
if (is request param null？) then (N)
  :query user info by username;
  if (is user info  null ?) then (N)
    :compare the password;
    if (Is password right?) then (Y)
      :generate a token ,and set it to redis;
      :response with login success;
    else(N)
       :response with wrong password code;
       stop
    endif
  else(Y)
    :response with error userinfo;
    stop
  endif
else(Y)
  :response with error param;
  stop
  endif
stop
@enduml