实现图片验证码的校验和发送手机验证码 django Day12

 生成图片验证码：

[code]from PIL import Image, ImageDraw, ImageFont
from django.utils.six import BytesIO
import random
from django_redis import get_redis_connection
class ImgCodeView(View):
def get(self, request, uuid):
bgcolor = (random.randrange(20, 100), random.randrange(
20, 100), 255)
width = 100
height = 25
# 创建画面对象
im = Image.new('RGB', (width, height), bgcolor)
# 创建画笔对象
draw = ImageDraw.Draw(im)
# 调用画笔的point()函数绘制噪点
for i in range(0, 100):
xy = (random.randrange(0, width), random.randrange(0, height))
fill = (random.randrange(0, 255), 255, random.randrange(0, 255))
draw.point(xy, fill=fill)
# 定义验证码的备选值
str1 = 'ABCD123EFGHIJK456LMNOPQRS789TUVWXYZ0'
# 随机选取4个值作为验证码
rand_str = ''
for i in range(0, 4):
rand_str += str1[random.randrange(0, len(str1))]
# 构造字体对象，ubuntu的字体路径为“/usr/share/fonts/truetype/freefont”
font = ImageFont.truetype('FreeMono.ttf', 23)
# 构造字体颜色
fontcolor = (255, random.randrange(0, 255), random.randrange(0, 255))
# 绘制4个字
draw.text((5, 2), rand_str[0], font=font, fill=fontcolor)
draw.text((25, 2), rand_str[1], font=font, fill=fontcolor)
draw.text((50, 2), rand_str[2], font=font, fill=fontcolor)
draw.text((75, 2), rand_str[3], font=font, fill=fontcolor)
# 释放画笔
del draw
# 存入session，用于做进一步验证
request.session['verifycode'] = rand_str
# 内存文件操作
buf = BytesIO()
# 将图片保存在内存中，文件类型为png
im.save(buf, 'png')
print(rand_str)
print(uuid)
con = get_redis_connection()
con.setex(name=uuid, time=3000, value=rand_str)
# 将内存中的图片数据返回给客户端，MIME类型为图片png
return HttpResponse(buf.getvalue(), 'image/png')

实现校验图片验证码功能的serializers.py文件：

[code]from rest_framework import serializers
from django_redis import get_redis_connection

class MsgCodeSerialize(serializers.Serializer):

uuid = serializers.UUIDField()
rand_str = serializers.CharField(max_length=4, min_length=4)

def validate(self, data):
print(data)
uuid = str(data['uuid'])
rand_str = data['rand_str']
rand_str = rand_str.upper()
con = get_redis_connection()
img_str = con.get(uuid)
print('#' * 80)
print(self.context['view'].kwargs['phone'])
if not img_str:
raise serializers.ValidationError('验证码不存在')
elif rand_str ！= img_str.decode():
raise serializers.ValidationError('验证失败')

return data

 view中校验图片验证码和发送手机验证码（使用容联）：

[code]from rest_framework.views import APIView
import random
from django_redis import get_redis_connection
from django.http import HttpResponse, JsonResponse
from .serializers import MsgCodeSerialize

from shanghuishop.utils.yuntongxun.sms import CCP
class MsgCodeView(APIView):

def get(self, request, phone):

# 校验验证码

# 127.0.0.1:8000/msg_code/{phone}/?uuid={uuid}&rand_str={rand_str}
serialize = MsgCodeSerialize(data=request.query_params)
serialize.is_valid(raise_exception=True)

# 发送短信
# print(phone)
alert = ''
con = get_redis_connection()
pipe_obj = con.pipeline()
# 若是手机验证码已过期或不存在
if not con.get(phone):
rand_num = random.randint(1000, 9999)
ccp = CCP()
ccp.send_template_sms(phone, [rand_num, 5], 1)
con.setex(name=phone, time=3000, value=rand_num)
pipe_obj.execute()
alert = '已发送'
# 若是手机验证码未过期
else:
# print('#'*80)
alert = '勿重复发送'
return JsonResponse({'alert': alert})