python django生成验证码并匹配

最新推荐文章于 2022-04-24 09:42:40 发布

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最新推荐文章于 2022-04-24 09:42:40 发布

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文章标签： python

本文链接：https://blog.youkuaiyun.com/zhangweiye068/article/details/82705619

本文介绍了如何在Django项目中生成及验证验证码。步骤包括在views.py中编写生成验证码的程序，创建模板文件yanzhengma.html，设置视图函数，更新URL配置，以及在views.py中实现验证码的验证逻辑。

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首先我们网上找一个生成验证码的程序：

from PIL import Image, ImageFont, ImageDraw, ImageFilter
import random


# 返回随机字母
def charRandom():
    return chr((random.randint(65, 90)))


# 返回随机数字
def numRandom():
    return random.randint(0, 9)


# 随机颜色
def colorRandom1():
    return (random.randint(64, 255), random.randint(64, 255), random.randint(64, 255))


# 随机长生颜色2
def colorRandom2():
    return (random.randint(32, 127), random.randint(32, 127), random.randint(32, 127))


width = 60 * 4
height = 60
image = Image.new('RGB', (width, height), (255, 255, 255));
# 创建font对象
font = ImageFont.truetype('C:/Windows/Fonts/Calibri.ttf', 36);

# 创建draw对象
draw = ImageDraw.Draw(image)
# 填充每一个颜色
for x in range(width):
    for y in range(height):
        draw.point((x, y), fill=colorRandom1())

# 输出文字
for t in range(4):
    draw.text((60 * t + 10, 10), charRandom(), font=font, fill=colorRandom2())

# 模糊
image = image.filter(ImageFilter.BLUR)
image.save('code.jpg', 'jpeg')

1.在views.py文件下创建一个生成验证码的程序

from PIL import Image, ImageFont, ImageDraw, ImageFilter
import random
import io

def yanzhengmashengcheng(request):

    # 返回随机数字
    # def numRandom():
    #     return random.randint(0, 9)

    # 随机颜色
    # def colorRandom1():
    #     return (random.randint(64, 255), random.randint(64, 255), random.randint(64, 255))

    # 随机长生颜色2
    # def colorRandom2():
    #     return (random.randint(32, 127), random.randint(32, 127), random.randint(32, 127))

    width = 60 * 4
    height = 60
    image = Image.new('RGB', (width, height), (255, 255, 255))
    # 创建font对象
    font = ImageFont.truetype('/home/python/Downloads/pycharm-2017.3.4/jre64/lib/fonts/ARIAL.TTF', 36)

    # 创建draw对象
    draw = ImageDraw.Draw(image)
    # 填充每一个颜色
    for x in range(width):
        for y in range(height):
            draw.point((x, y), fill=(random.randint(64, 255), random.randint(64, 255), random.randint(64, 255)))
    b=''

    # 输出文字
    for t in range(4):
        a=chr((random.randint(65, 90)))
        b+=a
        draw.text((60 * t + 10, 10), a, font=font, fill=(random.randint(32, 127), random.randint(32, 127), random.randint(32, 127)))
    # 模糊
    request.session['password'] = b
    request.session.set_expiry(3600)
    image = image.filter(ImageFilter.BLUR)
    buf = io.BytesIO()
    # 将图片保存在内存中，文件类型为png
    image.save(buf, 'png')
    # 将内存中的图片数据返回给客户端，MIME类型为图片png
    return HttpResponse(buf.getvalue(), 'image/png')

2.在templates创建一个yanzhengma.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
     <script>
        function refresh_check_code(ths) {
                ths.src += '?';
                {#src后面加问好会自动刷新验证码img的src#}
        }
     </script>
</head>
<body>
<img src="/yanzhengmashengcheng" onclick="refresh_check_code(this)">
  <form  method="get" action="/yanzhengmayanzheng" class="yanzhengma">
        <ul>
            <li>
                <input type="text" name="password" >

            </li>

            <li>
                <input type="submit" value="提交" class="sub">
            </li>

        </ul>
    </form>
</body>
</html>

3.在views.py创建一个关联网页的函数

def yanzhengma(request):
    return render(request,'yanzhengma.html')

4.在settings.py的同级文件urls.py下的urlpatterns列表中加入url(r’^’,include(‘user.urls’))
这里user是我自己创的一个个app，viwes.py和urls.py都在这个app内

5.在user文件下的urls中导入views：

from django.conf.urls import include, url
from user import views

并在urlpatterns列表中加入

    url(r'^yanzhengmashengcheng$',views.yanzhengmashengcheng),
    url(r'^yanzhengmayanzheng$',views.yanzhengmayanzheng),
    url(r'^yanzhengma$',views.yanzhengma)

6.在views.py文件中写验证函数：

def yanzhengmayanzheng(request):
    if request.method == 'GET':
        parm = request.GET
        print(parm)
        password_get= parm.get('password')
        print(password_get)


        try:
            a=request.session.get('password','错误')
            if a :
                # request.session.flush()
                return HttpResponse('ok')
        except:
                return HttpResponse('false')