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网站注册时，为了防止机器人自动注册，设置了验证码。本程序可以生成常用的验证码图片。代码如下：
#!/usr/bin/env python2.7.3
__author__ = \'simba\'
# coding=utf-8
import tempfile
import shutil
from image_char import ImageChar
import random
from config import authcode_font #请确保改字体存在
from app_store.settings import SITE_ROOT
import os
class VerifycationCode(object):
def destroy(self):
shutil.rmtree(self.tmpdir, ignore_errors=True)
def generate(self):
self.tmpdir = tempfile.mkdtemp()
self.path = self.tmpdir + \"/code.jpg\"
fontColor=(random.randint(0, 255),
random.randint(0, 255),
random.randint(0, 255))
size = (100, 40)
fontPath = os.path.join(SITE_ROOT, authcode_font)
bgColor = (255, 255, 255)
fontSize = 20
charNum = 4
ic = ImageChar(fontColor, size, fontPath, bgColor, fontSize, charNum)
self.image_str = ic.RandomString()
ic.save(self.path)
return self.image_str, self.path
#!/usr/bin/env python2.7.3
__author__ = \'simba\'
# coding=utf-8
from PIL import Image,ImageDraw,ImageFont
import random
from random_chinese_character import RandomChineseCharacter
from random_letter_number import RandomLetterNumber
class ImageChar(object):
def __init__(self, fontColor, size, fontPath, bgColor, fontSize, charNum):
self.size = size
self.fontPath = fontPath
self.bgColor = bgColor
self.fontSize = fontSize
self.fontColor = fontColor
self.font = ImageFont.truetype(self.fontPath, self.fontSize)
self.image = Image.new(\'RGB\', size, bgColor)
self.charNum = charNum
def __rotate(self):
self.image.rotate(random.randint(0, 360), expand=0)
def __drawText(self, pos, txt, fill):
draw = ImageDraw.Draw(self.image)
draw.text(pos, txt, font=self.font, fill=fill)
del draw
def __randRGB(self):
return (random.randint(0, 255),
random.randint(0, 255),
random.randint(0, 255))
def __randPoint(self):
(width, height) = self.size
return (random.randint(0, width), random.randint(0, height))
def __randLine(self, max_num):
draw = ImageDraw.Draw(self.image)
num = random.randint(1, max_num)
for i in range(0, num):
draw.line([self.__randPoint(), self.__randPoint()], self.__randRGB())
del draw
def RandomString(self):
gap = 5
start = 0
rand_str = \"\"
for i in range(0, self.charNum):
j = random.randint(0, 1)
if j == 0:
char = RandomChineseCharacter.Unicode()
else:
char = RandomLetterNumber.LetterNumber()
rand_str = rand_str + char
x = start + self.fontSize * i + random.randint(0, gap) + gap * i
self.__drawText((x, random.randint(-5, 5)), char, self.__randRGB())
self.__rotate()
self.__randLine(10)
return rand_str
def save(self, path):
self.image.save(path)
__author__ = \'simba\'
# coding=utf-8
import random
class RandomChineseCharacter(object):
\"\"\"
用于随机生成汉字
汉字的unicode码为[0x4E00, 0x9FBF]
此处只使用常用汉字
\"\"\"
@staticmethod
def Unicode():
code_list = [0x96d5,0x864e,0x7684,0x4e00,0x4e86,0x662f,
0x6211,0x4e0d,0x5728,0x4eba,0x4eec,0x6709,
0x6765,0x4ed6,0x8fd9,0x4e0a,0x7740,0x4e2a,
0x5730,0x5230,0x5927,0x91cc,0x8bf4,0x5c31,
0x53bb,0x5b50,0x5f97,0x4e5f,0x548c,0x90a3,
0x8981,0x4e0b,0x770b,0x5929,0x65f6,0x8fc7,
0x51fa,0x5c0f,0x4e48,0x8d77,0x4f60,0x90fd,
0x628a,0x597d,0x8fd8,0x591a,0x6ca1,0x4e3a,
0x53c8,0x53ef,0x5bb6,0x5b66,0x53ea,0x4ee5,
0x4e3b,0x4f1a,0x6837,0x5e74,0x60f3,0x751f,
0x540c,0x8001,0x4e2d,0x5341,0x4ece,0x81ea,
0x9762,0x524d,0x5934,0x9053,0x5b83,0x540e,
0x7136,0x8d70,0x5f88,0x50cf,0x89c1,0x4e24,
0x7528,0x5979,0x56fd,0x52a8,0x8fdb,0x6210,
0x56de,0x4ec0,0x8fb9,0x4f5c,0x5bf9,0x5f00,
0x800c,0x5df1,0x4e9b,0x73b0,0x5c71,0x6c11,
0x5019,0x7ecf,0x53d1,0x5de5,0x5411,0x4e8b,
0x547d,0x7ed9,0x957f,0x6c34,0x51e0,0x4e49,
0x4e09,0x58f0,0x4e8e,0x9ad8,0x624b,0x77e5,
0x7406,0x773c,0x5fd7,0x70b9,0x5fc3,0x6218,
0x4e8c,0x95ee,0x4f46,0x8eab,0x65b9,0x5b9e,
0x5403,0x505a,0x53eb,0x5f53,0x4f4f,0x542c,
0x9769,0x6253,0x5462,0x771f,0x5168,0x624d,
0x56db,0x5df2,0x6240,0x654c,0x4e4b,0x6700,
0x5149,0x4ea7,0x60c5,0x8def,0x5206,0x603b,
0x6761,0x767d,0x8bdd,0x4e1c,0x5e2d,0x6b21,
0x4eb2,0x5982,0x88ab,0x82b1,0x53e3,0x653e,
0x513f,0x5e38,0x6c14,0x9ec4,0x4e94,0x7b2c,
0x4f7f,0x5199,0x519b,0x6728,0x73cd,0x5427,
0x6587,0x8fd0,0x518d,0x679c,0x600e,0x5b9a,
0x8bb8,0x5feb,0x660e,0x884c,0x56e0,0x522b,
0x98de,0x5916,0x6811,0x7269,0x6d3b,0x90e8,
0x95e8,0x65e0,0x5f80,0x8239,0x671b,0x65b0,
0x5e26,0x961f,0x5148,0x529b,0x5b8c,0x5374,
0x7ad9,0x4ee3,0x5458,0x673a,0x66f4,0x4e5d,
0x60a8,0x6bcf,0x98ce,0x7ea7,0x8ddf,0x7b11,
0x554a,0x5b69,0x4e07,0x5c11,0x76f4,0x610f,
0x591c,0x6bd4,0x9636,0x8fde,0x8f66,0x91cd,
0x4fbf,0x6597,0x9a6c,0x54ea,0x5316,0x592a,
0x6307,0x53d8,0x793e,0x4f3c,0x58eb,0x8005,
0x5e72,0x77f3,0x6ee1,0x6885,0x65e5,0x51b3,
0x767e,0x539f,0x62ff,0x7fa4,0x7a76,0x5404,
0x516d,0x672c,0x601d,0x89e3,0x7acb,0x6cb3,
0x6751,0x516b,0x96be,0x65e9,0x8bba,0x5417,
0x6839,0x5171,0x8ba9,0x76f8,0x7814,0x4eca,
0x5176,0x4e66,0x5750,0x63a5,0x5e94,0x5173,
0x4fe1,0x89c9,0x6b65,0x53cd,0x5904,0x8bb0,
0x5c06,0x5343,0x627e,0x4e89,0x9886,0x6216,
0x5e08,0x7ed3,0x5757,0x8dd1,0x8c01,0x8349,
0x8d8a,0x5b57,0x52a0,0x811a,0x7d27,0x7231,
0x7b49,0x4e60,0x9635,0x6015,0x6708,0x9752,
0x534a,0x706b,0x6cd5,0x9898,0x5efa,0x8d76,
0x4f4d,0x5531,0x6d77,0x4e03,0x5973,0x4efb,
0x4ef6,0x611f,0x51c6,0x5f20,0x56e2,0x5c4b,
0x79bb,0x8272,0x8138,0x7247,0x79d1,0x5012,
0x775b,0x5229,0x4e16,0x521a,0x4e14,0x7531,
0x9001,0x5207,0x661f,0x5bfc,0x665a,0x8868,
0x591f,0x6574,0x8ba4,0x54cd,0x96ea,0x6d41,
0x672a,0x573a,0x8be5,0x5e76,0x5e95,0x6df1,
0x523b,0x5e73,0x4f1f,0x5fd9,0x63d0,0x786e,
0x8fd1,0x4eae,0x8f7b,0x8bb2,0x519c,0x53e4,
0x9ed1,0x544a,0x754c,0x62c9,0x540d,0x5440,
0x571f,0x6e05,0x9633,0x7167,0x529e,0x53f2,
0x6539,0x5386,0x8f6c,0x753b,0x9020,0x5634,
0x6b64,0x6cbb,0x5317,0x5fc5,0x670d,0x96e8,
0x7a7f,0x5185,0x8bc6,0x9a8c,0x4f20,0x4e1a,
0x83dc,0x722c,0x7761,0x5174,0x5f62,0x91cf,
0x54b1,0x89c2,0x82e6,0x4f53,0x4f17,0x901a,
0x51b2,0x5408,0x7834,0x53cb,0x5ea6,0x672f,
0x996d,0x516c,0x65c1,0x623f,0x6781,0x5357,
0x67aa,0x8bfb,0x6c99,0x5c81,0x7ebf,0x91ce,
0x575a,0x7a7a,0x6536,0x7b97,0x81f3,0x653f,
0x57ce,0x52b3,0x843d,0x94b1,0x7279,0x56f4,
0x5f1f,0x80dc,0x6559,0x70ed,0x5c55,0x5305,
0x6b4c,0x7c7b,0x6e10,0x5f3a,0x6570,0x4e61,
0x547c,0x97f3,0x7b54,0x54e5,0x9645,0x65e7,
0x795e,0x5ea7,0x7ae0,0x5e2e,0x5566,0x53d7,
0x7cfb,0x4ee4,0x8df3,0x975e,0x4f55,0x725b,
0x53d6,0x5165,0x5cb8,0x6562,0x6389,0x5ffd,
0x79cd,0x88c5,0x9876,0x6025,0x6234,0x6797,
0x505c,0x606f,0x53e5,0x533a,0x8863,0x822c,
0x62a5,0x53f6,0x538b,0x6162,0x53d4,0x80cc,
0x7ec6,0x8273,0x4f50]
var = random.choice(code_list)
return unichr(var)
#!/usr/bin/env python2.7.3
__author__ = \'simba\'
# coding=utf-8
import random
import string
class RandomLetterNumber(object):
\"\"\"
用于随机生成数字和字母
\"\"\"
@staticmethod
def LetterNumber():
allw = string.ascii_letters + string.digits
letter_number = random.choice(allw)
return letter_number
authcode_font = \"static/fonts/wqy-microhei.ttc\"
使用方式举例，在django的view文件中使用：
def verify_code(request):
vc = VerifycationCode()
image_code, image_path = vc.generate()
f = open(image_path, \"r\")
buffer = f.read()
f.close()
vc.destroy()
httpResponse = HttpResponse(content=buffer)
request.session[\'auth_code\'] = image_code.lower() #校验码不区分大小写
return httpResponse
注：该程序需要用到PIL模块，必须先安装libfreetype6-dev、libfreetype6、libjpeg8-dev、libjpeg8，
即： $ sudo apt-get install ibfreetype6-dev libfreetype6 libjpeg8-dev libjpeg8;
然后再安装Pillow包,
即：$ pip install Pillow。
先后顺序不能改，否则PIL无法使用。