用PIL生成驗證碼
check_code.py
import random, string from PIL?
import Image,ImageDraw,ImageFont,ImageFilter
#生成隨機(jī)字符串
def getRandomChar():
#string模塊包含各種字符串，以下為小寫字母加數(shù)字
ran = string.ascii_lowercase + string.digits
char ='' "
for i in range(4):
????char += random.choice(ran)
????return char
#返回一個隨機(jī)的RGB顏色
def getRandomColor():
? ? ? ????return(random.randint(50,150), random.randint(50,150),random.randint(50,150))
def create_code():
#創(chuàng)建圖片，模式，大小，背景色
????????img = Image.new('RGB', (120,30), (255,255,255))
#創(chuàng)建畫布
????????draw = ImageDraw.Draw(img)
#設(shè)置字體
????????font = ImageFont.truetype('Arial.ttf',25)
????????code = getRandomChar()
#將生成的字符畫在畫布上
????????for t in range(4):
????????????????draw.text((30*t+5,0),code[t],getRandomColor(),font)
#生成干擾點
????????for _ in range(random.randint(0,50)):
#位置，顏色
????????????????draw.point((random.randint(0,120), random.randint(0,30)),fill=getRandomColor())
#使用模糊濾鏡使圖片模糊
? ? ? ? ?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):
#在內(nèi)存中開辟空間用以生成臨時的圖片
????????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),
顯示圖片及判斷
test_code.html
