这里讲讲在django中使用第三方插件验证码的流程。
一、 先安装pillow, 通过 python -m pip install pillow
二、安装完后，在官方网站上看操作过程。地址：pillow.readthedocs.io/en/
三、视图部分逻辑代码--
1、验证码部分 ( 注意：验证码要用全局变量来使得后期可以和输入的值进行验证）
def verifycode(request):
from PIL import Image, ImageDraw, ImageFont
import random #background
bgColor = (random.randrange(50,100),random.randrange(50,100),random.randrange(50,100)) #hight and length
width = 100
height = 25 #create a canvas
image = Image.new('RGB',(width,height),bgColor) #
#font = ImageFont.truetype('FreeMono.ttf',24)
#create a pen
draw = ImageDraw.Draw(image) #create a global empty string for verify code
global textTemp textTemp=''
#create char
for i in range(4):
textTemp1 = text[random.randrange(0, len(text))]
textTemp += textTemp1
draw.text((i*25,0) ,
#text[random.randrange(0,len(text))]
textTemp1 ,
(255,255,255),
)
request.session['code']=textTemp
#draw.text((0,0),text,(255,255,255)) #save
from io import BytesIO as StringIO
buf = StringIO()
image.save(buf,'png') #output to clinet return HttpResponse(buf.getvalue(),'image/png')
2、表格页面一的视图逻辑
def verifyTest1(request):
return render(request, 'booktest/verifyTest1.html')
3、验证输入的视图逻辑
def verifyTest2(request):
code = request.POST['code']
if( code == textTemp ):
return HttpResponse('You got it')
return HttpResponse('False')
四、创建模板
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<image src="/booktest/verifycode"></image><br>
<form action="verifyTest1" method="post">
{% csrf_token %}
<input type="text" name ="code1">
<input type="submit" name="submit">
</form>
</body>
</html>
#创建模板如果把 “form” 写成 “from” 就没法跳转了
五、创建url
url(r'^verifycode/$', views.verifycode),
url(r'^verifyTest1/$', views.verifyTest1),
url(r'^verifyTest2/$', views.verifyTest2)
六、效果
当输入的验证码错误，会返回“false”。 正确则返回“You got it.”