新年到，先祝大家新年快乐：
怎么样，上面的这个小贺卡还不错吧？其实这个是通过Serverless架构自动生成的，测试地址：serverless.0duzhan.com
核心代码，就是Python通过pillow依赖，复制粘贴各种图片：
# -*- coding: utf8 -*-
import qrcode, uuid, json, base64
from PIL import Image, ImageDraw, ImageFont
def return_msg(error, msg):
return_data = {
"uuid": str(uuid.uuid1()),
"error": error,
"message": msg
}
print(return_data)
return return_data
def get_qrcode(url):
qr = qrcode.QRCode(
error_correction=qrcode.constants.ERROR_CORRECT_L,
box_size=8,
border=1,
)
# 传入数据
qr.add_data(url)
qr.make(fit=True)
# 生成二维码
img = qr.make_image()
# 保存二维码
img.save('/tmp/qrcode.png')
return Image.open('/tmp/qrcode.png').convert("RGBA")
def get_input_str(input_str, font, draw, need_height=False):
length = 0
new_str = ""
max_height = []
for eve in input_str:
width, height = draw.textsize(eve, font)
max_height.append(height)
length = length + width
if length > 804 and eve != "\n":
length = width
new_str = new_str + "\n" + eve
else:
new_str = new_str + eve
if need_height:
if len(new_str.split("\n")) > 10:
return False
return (new_str, max(max_height) * len(new_str.split("\n")) if "\n" in new_str else max(max_height))
else:
return new_str
def do_watermark(temp_watermark_pic, watermark_pic_new_x, watermark_pic_new_y):
for i in range(watermark_pic_new_x):
for k in range(watermark_pic_new_y):
color = temp_watermark_pic.getpixel((i, k))
if color != (255, 255, 255, 0):
color = color[:-1] + (40,)
temp_watermark_pic.putpixel((i, k), color)
return temp_watermark_pic
def main_handler(event, context):
try:
json_data = json.loads(event["body"])
frame_file = "./base/frame/%s.png" % (json_data["frame"])
title_file = "./base/word/%s.png" % (json_data["title"])
watermark_file = "./base/others/%s.png" % (json_data["watermark"])
font = ImageFont.truetype('./base/font/%s.ttf' % (json_data["font"]), 40)
input_str = json_data["text"]
from_str = json_data["from"]
to_str = json_data["to"]
symbol_file = "http://serverless.0duzhan.com/app/new_year_greeting_card/fu.html?id=%s" % (json_data["symbol"])
except Exception as e:
print(e)
return return_msg(True, "参数获取失败")
if len(from_str) > 20:
return return_msg(True, "落款昵称不可超过20字符")
if len(to_str) > 20:
return return_msg(True, "被赠与人昵称不可超过20字符")
if len(input_str) > 200:
return return_msg(True, "祝福内容不可以超过200字")
try:
temp_base_pic = Image.new('RGBA', (954, 1348), (255, 255, 255))
frame_pic = Image.open(frame_file).convert("RGBA").resize((954, 1348), Image.ANTIALIAS)
title_pic = Image.open(title_file).convert("RGBA")
watermark_pic = Image.open(watermark_file).convert("RGBA")
title_pic_x, title_pic_y = title_pic.size
title_pic_new_x = 310
title_pic_new_y = int(title_pic_y * title_pic_new_x / title_pic_x)
title_pic = title_pic.resize((title_pic_new_x, title_pic_new_y), Image.ANTIALIAS)
watermark_pic_x, watermark_pic_y = watermark_pic.size
watermark_pic_new_x = 800
watermark_pic_new_y = int(watermark_pic_y * watermark_pic_new_x / watermark_pic_x)
watermark_pic = watermark_pic.resize((watermark_pic_new_x, watermark_pic_new_y), Image.ANTIALIAS)
temp_watermark_pic = Image.new('RGBA', (watermark_pic_new_x, watermark_pic_new_y), (255, 255, 255, 0))
temp_watermark_pic.paste(watermark_pic, (0, 0), watermark_pic)
temp_watermark_pic = do_watermark(temp_watermark_pic, watermark_pic_new_x, watermark_pic_new_y)
temp_base_pic.paste(frame_pic, (0, 0), frame_pic)
temp_base_pic.paste(title_pic, (320, 30), title_pic)
temp_base_pic.paste(temp_watermark_pic, (77, int((1348 - int(watermark_pic_new_y)) / 2)), temp_watermark_pic)
temp_base_pic.paste(get_qrcode(symbol_file), (340, 950), get_qrcode(symbol_file))
draw = ImageDraw.Draw(temp_base_pic)
draw.text((75, 300), get_input_str(to_str + ":", font, draw), (0, 0, 0), font=font)
temp_data = get_input_str(input_str, font, draw, True)
if not temp_data:
return return_msg(True, "不要有太多的换行哦")
input_str, content_height = temp_data
draw.text((75, 400), input_str, (0, 0, 0), font=font)
length_data = 850
for eve_ap in from_str:
width, height = draw.textsize(eve_ap, font)
length_data = length_data - width
draw.text((length_data, content_height + 400), get_input_str(from_str, font, draw), (0, 0, 0), font=font)
draw.text((415, 1240), get_input_str("扫码抽取新年福", font, draw), (0, 0, 0),
font=ImageFont.truetype('./base/font/01.ttf', 20))
temp_base_pic.save("/tmp/test_output.png")
with open("/tmp/test_output.png", "rb") as f:
base64Data = str(base64.b64encode(f.read()), encoding='utf-8')
return return_msg(False, {"picture": base64Data})
except Exception as e:
print(e)
return return_msg(True, "贺卡生成失败")
def test():
event = {
"requestContext": {
"serviceId": "service-f94sy04v",
"path": "/test/{path}",
"httpMethod": "POST",
"requestId": "c6af9ac6-7b61-11e6-9a41-93e8deadbeef",
"identity": {
"secretId": "abdcdxxxxxxxsdfs"
},
"sourceIp": "14.17.22.34",
"stage": "release"
},
"headers": {
"Accept-Language": "en-US,en,cn",
"Accept": "text/html,application/xml,application/json",
"Host": "service-3ei3tii4-251000691.ap-guangzhou.apigateway.myqloud.com",
"User-Agent": "User Agent String"
},
"body": json.dumps({
"frame": "18",
"title": "1",
"watermark": "5",
"font": "字体管家乔乔体",
"text": "祝您在新的一年身体健康，万事如意，天天开心，工作顺利！祝您在新的一年身体健康，万事如意，天天开心，工作顺利！祝您在新的一年身体健康，万事如意，天天开心，工作顺利！祝您在新的一年身体健康，万事如意，天天开心，工作顺利！祝您在新的一年身体健康，万事如意，天天开心，工作顺利！祝您在新的一年身体健康，万事如意，天天开心，工作顺利！",
"symbol": "945a0cc6430f6ef661bc14773e122f98",
"from": "dfounderliu",
"to": "anycodes"
}),
"pathParameters": {
"path": "value"
},
"queryStringParameters": {
"foo": "bar"
},
"headerParameters": {
"Refer": "10.0.2.14"
},
"stageVariables": {
"stage": "release"
},
"path": "/test/value",
"queryString": {
"foo": "bar",
"bob": "alice"
},
"httpMethod": "POST"
}
print(main_handler(event, None))
if __name__ == "__main__":
test()
非常简单有趣，这里面pillow可能要在centos机器下打包，为了更加简单方便操作，可以用这个工具：
完成之后，可以愉快部署：
new_year_greeting_card:
component: "@serverless/tencent-scf"
inputs:
name: myapi_new_year_greeting_card
codeUri: ./
exclude:
- .gitignore
- .git/**
- .serverless
- .env
handler: index.main_handler
runtime: Python3.6
region: ap-beijing
description: 新年贺卡
memorySize: 256
timeout: 5
events:
- apigw:
name: serverless
parameters:
serviceId: service-8d3fi753
environment: release
endpoints:
- path: /new_year_greeting_card
description: 新年贺卡
method: POST
enableCORS: true
param:
- name: from
position: BODY
required: 'FALSE'
type: string
desc: 用户昵称
- name: to
position: BODY
required: 'FALSE'
type: string
desc: 被给予人昵称
- name: frame
position: BODY
required: 'FALSE'
type: string
desc: 框架图片
- name: title
position: BODY
required: 'FALSE'
type: string
desc: 标题图片
- name: watermark
position: BODY
required: 'FALSE'
type: string
desc: 水印图片
- name: font
position: BODY
required: 'FALSE'
type: string
desc: 字体
- name: symbol
position: BODY
required: 'FALSE'
type: string
desc: 符图
- name: text
position: BODY
required: 'FALSE'
type: string
desc: 正文
开源地址：
https://github.com/anycodes/S...
