图片验证码
1、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",
"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"
2、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
3、在views.py中使用
from django.shortcuts import render
# Create your views here.
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')