## 演示视频：[https://developer.aliyun.com/live/249772](https://developer.aliyun.com/live/249772)
## 一、Serverless简介
Serverless，中文意思是“无服务器”，所谓的无服务器并非是说不需要依靠服务器等资源，而是说开发者再也不用过多考虑服务器的问题，可以更专注在产品代码上，同时计算资源也开始作为服务出现，而不是作为服务器的概念出现。
### 1.Serverless架构
主要包含两部分：Baas和Faas，通常位于云端，使用时不需要关注最底层的服务器。
Baas（后端即服务：Backend as a Service）包括对象存储、云数据库、API网关、消息推送等。
Faas（函数即服务：Functions as a Service）对计算能力进行了抽象，可以在无需管理服务器的情况下响应事件。
### 2.Serverless三大应用场景
场景一：事件触发场景，即有事件触发时才会执行。
场景二：流量突发场景，遇到突发大流量情况时，Serverless架构下按需加载，弹性伸缩，节省资源，负载均衡。
场景三：大数据处理场景，用户只需要上传核心代码到函数计算，就可以快速完成整个工作。
### 3.Serverless的优势
传统架构下，面对大流量场景，需要增加机器或者对机器升级，运维较为困难。面对高峰和低谷，无法做到按需使用，成本较高。
Serverless架构下，开发者只需专注代码开发，无需在各个云资源控制台手动开通服务和配置管理，并能够根据业务请求自动进行弹性伸缩；支持用户按需付费，成本较低；开发周期快，很大程度上提升了开发、部署的效率。
具体可以查看阿里云相关文档 [https://developer.aliyun.com/group/serverless](https://developer.aliyun.com/group/serverless)
## 二、Python实现发送邮件
```python
import requests
import yagmail   # 此模块用于发邮件
import schedule  # 此模块用于计划任务
from bs4 import BeautifulSoup
import re

ran = 0
url = 'https://tianqi.2345.com/cixian1d/70177.htm'  # 定义天气预报的url
loveurl = 'https://www.guaze.com/juzi/23389.html'  # 定义情话的url
def email():
    global ran      # 将ran变量声明为全局变量
    web = requests.get(url)
    # print(web.text)

page = BeautifulSoup(web.text,"html.parser")

# print(ran)

# print(love[ran])

weather = page.find("div",class_="real-today")
    # print(weather.text)

web2 = requests.get(loveurl)
    web2.encoding = 'gb2312'
    page = BeautifulSoup(web2.text, "html.parser")

div = page.find('div', class_="content")

div = str(div.text)
    # print(div)
    grep = re.compile(r"\d+、(.*)")
    content = grep.findall(div)
    # print(content)

# email函数内的内容是爬取天气和情话的，具体的地址天气你可以更换url

yag = yagmail.SMTP(
        host='smtp.qq.com', user='xxxxxxx@qq.com',   # 如过用的是qq邮箱就写smtp.qq.com，如果是163就写smtp.163.com
        password='xhaztrwpjffpbdhh', smtp_ssl=True       # 授权码在qq邮箱里开启smtp就会生成一个
    )
    weather = [weather.text,"每日情话:",content[ran],    # 定义发送内容
               yagmail.inline(r"/.love.jpg")    # 附件图片，不发图片可以删掉
               ]
    yag.send(
        to=['xxxxxxxxx@qq.com'],
        subject='早鸭',           # 邮件主题
        contents=weather          # 发送的内容为上面定义的weather，其中weather.text是天气预报，content[ran]是情话
    )
    print("发送完成")
    ran += 1

schedule.every().day.at("05:21").do(email)      # 每天5点20分执行函数email0
#schedule.every(10).seconds.do(email)  #每10秒执行一下函数email的内容，我这里用于测试
while True:
    schedule.run_pending()
```
## 三、部署到阿里云Serverless，实现自动发送
### 1.登录到阿里云首页
![image-20220701202818857.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137474912-b14ec072-a4a4-4f78-9d19-42456bd9d0c4.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=904&id=WNinE&margin=%5Bobject%20Object%5D&name=image-20220701202818857.png&originHeight=904&originWidth=1920&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u78b49507-7db7-4cee-8266-eaf3ba2aea7&title=&width=1920)
### 2.选择产品->弹性计算->Serverless->函数计算FC
![image-20220701202913872.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137474922-ecbe7e1e-8b41-4681-a1d0-d0e644546e65.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=900&id=z4vPH&margin=%5Bobject%20Object%5D&name=image-20220701202913872.png&originHeight=900&originWidth=1920&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u5b4f5a5f-eca7-4534-8196-ae8f23fb84b&title=&width=1920)
### 3.进入控制台->服务及函数->创建函数
![image-20220701203133969.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137474913-1ddefb46-b6ee-488d-bee7-e178b92df121.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=904&id=TnSDe&margin=%5Bobject%20Object%5D&name=image-20220701203133969.png&originHeight=904&originWidth=1920&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u51189b29-5869-4aa5-beed-3b117127102&title=&width=1920)
![image-20220701203309597.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137474935-b04b6446-3cfa-461e-ae31-8289a6124efe.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=899&id=yKmQe&margin=%5Bobject%20Object%5D&name=image-20220701203309597.png&originHeight=899&originWidth=1920&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=ue931424d-91f4-4df8-9585-1b73bb1c543&title=&width=1920)
![image-20220701203504468.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137474955-ff7a099d-04dd-49c8-bc34-03ab1886305d.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=894&id=ANMVs&margin=%5Bobject%20Object%5D&name=image-20220701203504468.png&originHeight=894&originWidth=1920&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=ua371a1c1-342d-4da6-a92a-8ea6c6ffc12&title=&width=1920)
![image-20220701203546979.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137475648-830b7b99-d353-413c-b75e-e52e27d32395.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=895&id=n3lrZ&margin=%5Bobject%20Object%5D&name=image-20220701203546979.png&originHeight=895&originWidth=1920&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u01d01b12-88b5-4465-a76b-6f23def1e56&title=&width=1920)
![image-20220701203657754.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137476629-fb9589d5-a7a6-4398-92dd-d21c163eee40.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=896&id=kGydG&margin=%5Bobject%20Object%5D&name=image-20220701203657754.png&originHeight=896&originWidth=1920&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=ub888bd3f-88eb-4ac0-a976-4abbf19382f&title=&width=1920)
### 4.上传代码->上传文件夹->选择文件夹->保存并部署
![image-20220706181040181.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137476568-ec20783a-6267-48a8-8891-78e57fb85401.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=896&id=u1y9c&margin=%5Bobject%20Object%5D&name=image-20220706181040181.png&originHeight=896&originWidth=1920&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u9ec5b3f0-484d-4190-844a-7bcaa524c83&title=&width=1920)
![image-20220706181236172.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137476671-297ebf63-0685-47ea-8fbf-55efaed3f711.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=535&id=oUvOJ&margin=%5Bobject%20Object%5D&name=image-20220706181236172.png&originHeight=535&originWidth=1058&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u9465d190-59ff-4723-9cad-fe9f5f55414&title=&width=1058)![image-20220706181318098.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137476718-c8b084ed-6752-4317-9500-665502061601.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=592&id=oU5za&margin=%5Bobject%20Object%5D&name=image-20220706181318098.png&originHeight=592&originWidth=1314&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u082170cb-1e32-4478-9268-f91bf026950&title=&width=1314)
![image-20220706181414524.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137477294-3ae0ac97-3a2c-4e78-a89b-93c999655f1e.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=528&id=zvH19&margin=%5Bobject%20Object%5D&name=image-20220706181414524.png&originHeight=528&originWidth=1086&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u7dba3d02-ab3b-40ea-8173-c27744d6086&title=&width=1086)
### 5.函数配置->编辑环境信息->修改函数入口
![image-20220706182415671.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137477733-dfbbc057-2631-4975-929a-0bf135900225.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=849&id=JTG8o&margin=%5Bobject%20Object%5D&name=image-20220706182415671.png&originHeight=849&originWidth=1920&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u5fc3436f-18ab-4e15-b4b6-8088ff83ec1&title=&width=1920)![image-20220706182534216.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137477913-1d31a2de-2ae6-432c-984c-7da88fe6a90b.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=829&id=pxuIg&margin=%5Bobject%20Object%5D&name=image-20220706182534216.png&originHeight=829&originWidth=1252&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=uf05743de-e8f1-4b36-b95b-bf467a3cdd3&title=&width=1252)
### 6.添加触发器，实现每日定时发送
触发器管理->创建触发器->定时触发器->填写名称和指定时间
![image-20220706184028003.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137478340-c53353c0-cd3d-4d4e-a30e-ae84a84d7f10.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=836&id=ltHok&margin=%5Bobject%20Object%5D&name=image-20220706184028003.png&originHeight=836&originWidth=1920&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u00a812f3-6c61-48bf-992e-64b0989028c&title=&width=1920)![image-20220706183941738.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137478320-01048170-b9a3-4cbb-8ae4-ed8af722b3bc.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=824&id=KBT4V&margin=%5Bobject%20Object%5D&name=image-20220706183941738.png&originHeight=824&originWidth=800&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u00093987-9bad-425c-b323-f4662417437&title=&width=800)
![image-20220706185307405.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137478479-c6c652e6-66b5-44e1-b426-edbd1d4758fd.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=438&id=EvxHd&margin=%5Bobject%20Object%5D&name=image-20220706185307405.png&originHeight=438&originWidth=1917&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u002e67ac-77ce-4107-9aa4-8ce7680093b&title=&width=1917)
### 7.导入依赖并部署
先在终端执行以下三条命令，导入项目所需要的依赖
```python
pip3 install yagmail -t .
pip3 install schedule -t .
pip3 install bs4 -t .
```
![image-20220706181742559.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137479596-05d043ad-99ea-46ad-827c-bd3b08b01908.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=693&id=myn9q&margin=%5Bobject%20Object%5D&name=image-20220706181742559.png&originHeight=693&originWidth=1889&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u593970c6-4470-47aa-968f-296228b5f92&title=&width=1889)
点击右上角保存并部署
![image-20220706182019285.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137479659-ff8f3f17-10db-4c53-9987-53a1700e0929.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=690&id=hLBOn&margin=%5Bobject%20Object%5D&name=image-20220706182019285.png&originHeight=690&originWidth=1888&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u763baca3-13f1-4e63-85ec-8654bef9bca&title=&width=1888)
## 四、效果展示
点击左上角测试函数，然后通过实时日志查看运行结果。
![image-20220706182226604.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137480067-3bc89707-305d-4f31-a0a6-a12cbc0e0cd2.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=835&id=XiEKh&margin=%5Bobject%20Object%5D&name=image-20220706182226604.png&originHeight=835&originWidth=1920&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=uc067a5b7-fb9e-4eaa-a2e4-6afa308e257&title=&width=1920)![image-20220706182732131.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137480211-7ac2c39e-33e0-435d-bc28-68178856ad1e.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=905&id=JP3Gh&margin=%5Bobject%20Object%5D&name=image-20220706182732131.png&originHeight=905&originWidth=1907&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=uce64bd16-4d45-4dd1-8e6c-004eb0702f5&title=&width=1907)
![image-20220701211458910.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137480199-641f59e1-934f-4c92-afd1-c18ce7cef199.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=758&id=lMvu7&margin=%5Bobject%20Object%5D&name=image-20220701211458910.png&originHeight=758&originWidth=1674&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u82b6ab55-06a1-4d86-833b-88a5f468a8c&title=&width=1674)
![image-20220706183510459.png](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137481358-23e648e4-eb4f-42ea-9ec9-e9002efcc977.png#clientId=u706577ae-5c82-4&crop=0&crop=0&crop=1&crop=1&height=892&id=MPdjB&margin=%5Bobject%20Object%5D&name=image-20220706183510459.png&originHeight=892&originWidth=678&originalType=binary&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u476415c4-9ed2-4a56-bc85-3030497222f&title=&width=678)
## 五、总结
这次实战是对Serverless的一次深刻的理解，收获技术的同时也提升了自己的学习能力。由于目前正在准备考研，就好久没有更新关于自学技术的文章，这回借着阿里云官方评测活动也去学一学火热的 Serverless 无服务架构的技术和思想，在这里分享这个当下流行的技术，然后结合着一些个人浅显的探索，希望能和大佬们共同学习成长！??

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