Python实现网站注册验证码生成类
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
# -*- 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:
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我们。
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