图片验证码接口

1 安装Django缓存模块

pip install django-redis==4.12.1

2 syl/settings.py 中配置缓存

# 缓存配置
CACHES ={
# django存缓默认位置,redis 0号库
# default: 连接名称
    "default": {
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": "redis://127.0.0.1:6379/0",
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
        }
    }, # django session存 reidis 1 号库（现在基本不需要使用）
    "session": {
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": "redis://127.0.0.1:6379/1",
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
        }
    },
    # 图形验证码，存redis 2号库
    "img_code": {
            # "BACKEND": "django_redis.cache.RedisCache",
            "BACKEND": "django_redis.cache.RedisCache",
            "LOCATION": "redis://127.0.0.1:6379/2",
            "OPTIONS": {
                    "CLIENT_CLASS": "django_redis.client.DefaultClient",
            }
        }
    }
# 配置session使用redis存储
SESSION_ENGINE = "django.contrib.sessions.backends.cache"
# 配置session存储的位置: 使用cache中的 session配置
SESSION_CACHE_ALIAS = "session"

3 新建应用verifications

在apps文件下新建应用： verifications

#切换到apps文件下执行创建命令

python ../manage.py startapp verifications


2 在syl/settings.py中添加应用

INSTALLED_APPS=[
        'verifications.apps.VerificationsConfig'
]


3 在syl/urls.py 主路由中添加

path('verify/', include('verifications.urls')),


4 添加子路由  verifications/urls.py

from django.urls import path
from . import views

urlpatterns = [
path('image_codes/', views.ImageCodeView.as_view())

]

4 图片验证码captcha使用

1.下载captcha压缩包captcha.zip，放到项目packages文件夹下

2.解压captcha.zip放到syl/libs文件夹下

3.解压文件中的syl/libs/captcha/captcha.py 右键运行即可生成图片验证码 unzip xxx.zip

5.在verifications/views.py中使用

from django.http import HttpResponse, HttpResponseForbidden
from django.views import View
from django_redis import get_redis_connection
from libs.captcha.captcha import captcha


class ImageCodeView(View):
    def get(self, request):
    # 1.接收数据
        uuid = request.GET.get('uuid')

    # 2.校验数据
        if not uuid:
            return HttpResponseForbidden('uuid无效')

    # 3.处理业务
    # 获取图片文本内容和图片二进制代码
        text, image = captcha.generate_captcha()

    # 4.把uuid和图片文本存入redis
        redis_client = get_redis_connection('img_code') # 获取redis客户端

    # 5.写入redis(是字符串)
        redis_client.setex(uuid, 60 * 5, text)

    # 6.返回响应图片
        return HttpResponse(image, content_type='image/jpg')

6.测试验证码接口 

http://192.168.56.100:8888/verify/image_codes/?uuid=66ea64aa-fbe6-11ea-a3d3005056c00008