优快云 Markdown流程图示例

示例1

```mermaid
flowchat
st=>start: 开始
e=>end: 结束
op=>operation: 我的操作
cond=>condition: 确认？

st->op->cond
cond(yes)->e
cond(no)->op
```

示例2

```mermaid
flowchat
start=>start: 开始
end=>end: 结束
login=>operation: 用户登录
is_login_sucess=>condition: 登录是否成功?
buy=>operation: 抢购
Is_the_stock_sufficient=>condition: 库存是否充足?
lock_inventory=>operation: 锁定库存
prompt=>operation: 给出提示
pay=>operation: 支付
whether_to_pay_successfully=>condition: 支付是否成功?
reduce_inventory=>operation: 减库存
whether_it_is_more_than_two_hours=>condition: 是否超过两个小时?
release_inventory=>operation: 释放库存

start->login
login->is_login_sucess
is_login_sucess(yes)->buy
is_login_sucess(no)->login
buy->Is_the_stock_sufficient
Is_the_stock_sufficient(yes)->lock_inventory
Is_the_stock_sufficient(no)->prompt->end
lock_inventory->pay->whether_to_pay_successfully
whether_to_pay_successfully(yes)->reduce_inventory->end
whether_to_pay_successfully(no)->whether_it_is_more_than_two_hours
whether_it_is_more_than_two_hours(yes)->release_inventory->end
whether_it_is_more_than_two_hours(no)->lock_inventory
```

示例3

```mermaid
flowchat
start=>start: 开始
end=>end: 结束

login_with_username=>operation: 用户名密码登录
login_with_weixin=>operation: 微信登录
login_with_alipay=>operation: 支付宝登录
login_with_third=>operation: 用第三方登录
whether_login_is_successful=>condition: 登录是否成功?
whether_to_login_by_username=>condition: 是否以用户方式登录?
is_login_with_weixin=>condition: 是否以微信方式登录?
buy=>operation: 抢购
login=>operation: 登录

start->whether_to_login_by_username
whether_to_login_by_username(yes)->login_with_username
whether_to_login_by_username(no)->login_with_third
login_with_username->login
login_with_third->is_login_with_weixin
is_login_with_weixin(yes)->login_with_weixin->login
is_login_with_weixin(no)->login_with_alipay->login
login->whether_login_is_successful
whether_login_is_successful(yes)->buy
whether_login_is_successful(no)->whether_to_login_by_username
buy->end
```

示例4

```mermaid
flowchat
start=>start: 开始
end=>end: 结束

login_with_username=>operation: 用户名密码登录
login_with_weixin=>operation: 微信登录
login_with_alipay=>operation: 支付宝登录
login_with_third=>operation: 用第三方登录
whether_login_is_successful=>condition: 登录是否成功?
whether_to_login_by_username=>condition: 是否以用户方式登录?
is_login_with_weixin=>condition: 是否以微信方式登录?
login=>operation: 用户登录
sigin_up=>operation: 注册
whether_sigin_up_is_successful=>condition: 注册是否成功？

buy=>operation: 抢购
Is_the_stock_sufficient=>condition: 库存是否充足?
lock_inventory=>operation: 锁定库存
prompt=>operation: 给出提示
pay=>operation: 支付
whether_to_pay_successfully=>condition: 支付是否成功?
reduce_inventory=>operation: 减库存
whether_it_is_more_than_two_hours=>condition: 是否超过两个小时?
release_inventory=>operation: 释放库存

start->whether_to_login_by_username
whether_to_login_by_username(yes)->login_with_username->login
whether_to_login_by_username(no)->is_login_with_weixin
is_login_with_weixin(yes)->login_with_weixin->login
is_login_with_weixin(no)->login_with_alipay->login
login->whether_login_is_successful
whether_login_is_successful(yes)->buy
whether_login_is_successful(no)->sigin_up
sigin_up->whether_sigin_up_is_successful
whether_sigin_up_is_successful(yes)->whether_to_login_by_username
whether_sigin_up_is_successful(no)->end
buy->Is_the_stock_sufficient
Is_the_stock_sufficient(yes)->lock_inventory
Is_the_stock_sufficient(no)->prompt->end
lock_inventory->pay->whether_to_pay_successfully
whether_to_pay_successfully(yes)->reduce_inventory->end
whether_to_pay_successfully(no)->whether_it_is_more_than_two_hours
whether_it_is_more_than_two_hours(yes)->release_inventory->end
whether_it_is_more_than_two_hours(no)->lock_inventory
```