Django驗證碼

一、生成Django驗證碼

    1）驗證碼代碼文件

def raw_code(request):
    #隨機背景顏色      background
    #隨機干擾線顏色    line_color
    #畫布寬度          img_width
    #畫布高度          img_height
    #驗證碼字體顏色    font_color = ['black','darkblue','darkred']
    #驗證碼字體尺寸    font_size
    #驗證碼字體        font = ImageFont.truetype('ARIAL.TTF',font_size)
    import random
    from cStringIO import StringIO
    from PIL import Image, ImageDraw

    string = {'number': '12345679',
              'litter': 'ACEFGHKMNPRTUVWXY'}
    background = (random.randrange(230, 255), random.randrange(230, 255), random.randrange(230, 255))
    line_color = (random.randrange(0, 255), random.randrange(0, 255), random.randrange(0, 255))
    img_width = 80
    img_height = 30
    font_color = ['black', 'darkblue', 'darkred']
    # font_size = 60
    #  驗證碼字體
    font = Const.CodeFont()
    request.session['verify'] = ''

    im = Image.new('RGB', (img_width, img_height), background)
    code = random.sample(string['litter'], 4)

    draw = ImageDraw.Draw(im)

    for i in range(random.randrange(3, 5)):
        xy = (random.randrange(0, img_width), random.randrange(0, img_height),
              random.randrange(0, img_width), random.randrange(0, img_height))
        draw.line(xy, fill=line_color, width=1)

    x = 2
    for i in code:
        y = random.randrange(0, 10)
        draw.text((x, y), i, font=font, fill=random.choice(font_color))
        x += 14
        request.session['verify'] += i
    del draw
    buf = StringIO()
    im.save(buf, 'gif')
    buf.seek(0)
    return HttpResponse(buf.getvalue(), 'image/gif')

   2）在上面文件中從下面const.py文件中引入 CodeFont

         from tools.const import Const

#coding=utf-8
class Const(object):
	def CodeFont():
		import ImageFont
		if not Const.CODE_FONT:
			try:
				f = Const.HERE + '/msyh.ttf'
				Const.CODE_FONT = ImageFont.truetype(f, 14)
			except:
				Const.CODE_FONT = ImageFont.load_default()
		return Const.CODE_FONT