本文实例为大家分享了Python网站注册验证码生成类的具体代码,供大家参考,具体内容如下
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
# -*- coding:utf-8 -*-
'''
Created on 2017年4月7日
@author: Water
'''
import os
import random
import string
import sys
import math
from PIL import Image,ImageDraw,ImageFont,ImageFilter
from django.conf import settings
#字体的位置,不同版本的系统会有不同
font_path = os.path.join( '/home/workspace/aofeiKart/static' , 'fonts/monaco.ttf' ) #settings.STATIC_ROOT, 'fonts/MONACO.TTF')
font_path = os.path.join(settings.STATIC_ROOT, 'fonts/monaco.ttf' )
# print font_path
#生成几位数的验证码
number = 4
#生成验证码图片的高度和宽度
size = ( 100 , 30 )
#背景颜色,默认为白色
bgcolor = ( 255 , 255 , 255 )
#字体颜色,默认为蓝色
fontcolor = ( 0 , 0 , 255 )
#干扰线颜色。默认为红色
linecolor = ( 255 , 0 , 0 )
#是否要加入干扰线
draw_line = True
#加入干扰线条数的上下限
line_number = ( 1 , 5 )
#用来随机生成一个字符串
# source = list(string.ascii_lowercase+'1234567890')
source = list ( '1234567890' )
def gene_text():
# return '6666'
return ''.join(random.sample(source,number)) #number是生成验证码的位数
#用来绘制干扰线
def gene_line(draw,width,height):
begin = (random.randint( 0 , width), random.randint( 0 , height))
end = (random.randint( 0 , width), random.randint( 0 , height))
draw.line([begin, end], fill = linecolor)
#生成验证码
def gene_code():
width,height = size #宽和高
image = Image.new( 'RGBA' ,(width,height),bgcolor) #创建图片
font = ImageFont.truetype(font_path, 25 ) #验证码的字体
draw = ImageDraw.Draw(image) #创建画笔
text = gene_text() #生成字符串
font_width, font_height = font.getsize(text)
draw.text(((width - font_width) / number, (height - font_height) / number),text,
font = font,fill = fontcolor) #填充字符串
if draw_line:
gene_line(draw,width,height)
image = image.transform((width + 20 ,height + 10 ), Image.AFFINE, ( 1 , - 0.3 , 0 , - 0.1 , 1 , 0 ), Image.BILINEAR) #创建扭曲
image = image. filter (ImageFilter.EDGE_ENHANCE_MORE) #滤镜,边界加强
image_file = text + '.png'
image_path = os.path.join(settings.STATIC_ROOT, 'images/%s' % image_file)
image.save(image_path) #保存验证码图片
return 'http://login.chaozu.net:8000/static/images/%s' % image_file, text
if __name__ = = "__main__" :
print gene_code()
|
实现过程很简单,主要注意有2点:
1.安装PIL库,设置好字体保存目录
2.如果直接返回图片的二进制数据流的話,如下:
1
2
3
4
5
|
buf = io.BytesIO() #io.BytesIO() #io.StringIO() use it to fill str obj
image.save(buf, 'png' )
request.session[ 'captcha' ] = text.lower()
return HttpResponse(buf.getvalue(), 'image/png' ) # return the image data stream as image/jpeg format, browser will treat it as an image
|
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。