utils文件加下check_code.py为生成验证码的主要代码：
pip3 install pillow
#!/usr/bin/env python # -*- coding:utf-8 -*- import random from PIL import Image, ImageDraw, ImageFont, ImageFilter _letter_cases = "abcdefghjkmnpqrstuvwxy" # 小写字母，去除可能干扰的i，l，o，z _upper_cases = _letter_cases.upper() # 大写字母 _numbers = ''.join(map(str, range(3, 10))) # 数字 init_chars = ''.join((_letter_cases, _upper_cases, _numbers)) def create_validate_code(size=(120, 30), chars=init_chars, img_type="GIF", mode="RGB", bg_color=(255, 255, 255), fg_color=(0, 0, 255), font_size=18, font_type="Monaco.ttf", #依赖字体 length=4, draw_lines=True, n_line=(1, 2), draw_points=True, point_chance=2): """ @todo: 生成验证码图片 @param size: 图片的大小，格式（宽，高），默认为(120, 30) @param chars: 允许的字符集合，格式字符串 @param img_type: 图片保存的格式，默认为GIF，可选的为GIF，JPEG，TIFF，PNG @param mode: 图片模式，默认为RGB @param bg_color: 背景颜色，默认为白色 @param fg_color: 前景色，验证码字符颜色，默认为蓝色#0000FF @param font_size: 验证码字体大小 @param font_type: 验证码字体，默认为 ae_AlArabiya.ttf @param length: 验证码字符个数 @param draw_lines: 是否划干扰线 @param n_lines: 干扰线的条数范围，格式元组，默认为(1, 2)，只有draw_lines为True时有效 @param draw_points: 是否画干扰点 @param point_chance: 干扰点出现的概率，大小范围[0, 100] @return: [0]: PIL Image实例 @return: [1]: 验证码图片中的字符串 """ width, height = size # 宽高 # 创建图形 img = Image.new(mode, size, bg_color) draw = ImageDraw.Draw(img) # 创建画笔 def get_chars(): """生成给定长度的字符串，返回列表格式""" return random.sample(chars, length) def create_lines(): """绘制干扰线""" line_num = random.randint(*n_line) # 干扰线条数 for i in range(line_num): # 起始点 begin = (random.randint(0, size[0]), random.randint(0, size[1])) # 结束点 end = (random.randint(0, size[0]), random.randint(0, size[1])) draw.line([begin, end], fill=(0, 0, 0)) def create_points(): """绘制干扰点""" chance = min(100, max(0, int(point_chance))) # 大小限制在[0, 100] for w in range(width): for h in range(height): tmp = random.randint(0, 100) if tmp > 100 - chance: draw.point((w, h), fill=(0, 0, 0)) def create_strs(): """绘制验证码字符""" c_chars = get_chars() strs = ' %s ' % ' '.join(c_chars) # 每个字符前后以空格隔开 font = ImageFont.truetype(font_type, font_size) font_width, font_height = font.getsize(strs) draw.text(((width - font_width) / 3, (height - font_height) / 3), strs, font=font, fill=fg_color) return ''.join(c_chars) if draw_lines: create_lines() if draw_points: create_points() strs = create_strs() # 图形扭曲参数 params = [1 - float(random.randint(1, 2)) / 100, 0, 0, 0, 1 - float(random.randint(1, 10)) / 100, float(random.randint(1, 2)) / 500, 0.001, float(random.randint(1, 2)) / 500 ] img = img.transform(size, Image.PERSPECTIVE, params) # 创建扭曲 img = img.filter(ImageFilter.EDGE_ENHANCE_MORE) # 滤镜，边界加强（阈值更大） return img, strs
from utils.check_code import create_validate_code from io import BytesIO def check_code(request): stream = BytesIO() #创建内存对象 img,code=create_validate_code() print(img,code) img.save(stream,'PNG') #把图片写进内存里面 request.session['checkcode']=code return HttpResponse(stream.getvalue()) #stream.getvalue()把内存中东西全部拿到
<!DOCTYPE html> <html lang="en" class="no-js"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>我的博客</title> <link rel='stylesheet' href='http://fonts.googleapis.com/css?family=PT+Sans:400,700'> <link rel="stylesheet" href="/static/login-page/css/reset.css"> <link rel="stylesheet" href="/static/login-page/css/supersized.css"> <link rel="stylesheet" href="/static/login-page/css/style.css"> </head> <body > {#<form action="{% url 'login'%}" method="POST">#} {##} {#<form action="{{request.path_info}}" method="POST">#} {##} {##} {# <label for="name">用户名:</label>#} {# <input type="text" id="name" name="username" placeholder="请输入用户名">#} {# <label for="password">密码:</label>#} {# <input type="password" id="password" name="pwd" placeholder="请输入密码">#} {# <input type="submit" value="登录">#} {# <span style="color: red">{{error_msg}}</span>#} {##} {#</form>#} <div class="page-container"> <h1>Hello！</h1> <h1>终于等到你</h1> <form action="{% url 'xiaoqing-login' %}" method="POST" id="form"> {% csrf_token %} <input type="text" name="username" class="username" placeholder="请输入用户名"> <input type="password" name="password" class="password" placeholder="请输入密码"> <img id='img' src="/xiaoqing/check_code.html"> <button type="button">登录</button> <div class="error"><span>+</span></div> </form> </div> <script src="/static/login-page/js/jquery-1.8.2.min.js"></script> <script src="/static/login-page/js/supersized.3.2.7.min.js"></script> <script src="/static/login-page/js/supersized-init.js"></script> <script src="/static/login-page/js/scripts.js"></script> <script> $('#img').click(function () { var url=$(this).attr('src'); $(this).attr('src', url+'?'); }) $(function () { $(":button").click(function () { $("#form").submit(); }) } ) </script> </body> </html>