用PIL生成验证码
check_code.py
import random, string from PIL
import Image,ImageDraw,ImageFont,ImageFilter
#生成随机字符串
def getRandomChar():
#string模块包含各种字符串，以下为小写字母加数字
ran = string.ascii_lowercase + string.digits
char ='' "
for i in range(4):
char += random.choice(ran)
return char
#返回一个随机的RGB颜色
def getRandomColor():
return(random.randint(50,150), random.randint(50,150),random.randint(50,150))
def create_code():
#创建图片，模式，大小，背景色
img = Image.new('RGB', (120,30), (255,255,255))
#创建画布
draw = ImageDraw.Draw(img)
#设置字体
font = ImageFont.truetype('Arial.ttf',25)
code = getRandomChar()
#将生成的字符画在画布上
for t in range(4):
draw.text((30*t+5,0),code[t],getRandomColor(),font)
#生成干扰点
for _ in range(random.randint(0,50)):
#位置，颜色
draw.point((random.randint(0,120), random.randint(0,30)),fill=getRandomColor())
#使用模糊滤镜使图片模糊
img = img.filter(ImageFilter.BLUR)
#保存#
img.save(''.join(code)+'.jpg','jpeg')
return img,code
if__name__ =='__main__':
create_code()
views.py（部分）
from SchoolBuy.utils import check_code
from io impor tBytesIO
from django.http import HttpResponse,Http404
def create_code_img(request):
#在内存中开辟空间用以生成临时的图片
f = BytesIO()
img,code = check_code.create_code()
request.session['check_code'] = code
img.save(f,'PNG')
return HttpResponse(f.getvalue())
utls.py(部分)
url(r'^create_code/$',views.create_code_img),
显示图片及判断
test_code.html
