设置django缓存+验证码图片接口

1.django 缓存设置

1.1 安装Django缓存模块

pip install django-redis==4.12.1

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", 
         "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.新建应用verifications

  • 图形验证码
  • 短信验证码
  • 邮件验证
 '''2.1 在apps文件夹下新建应用: verifications''' 
 python ../manage.py startapp verifications # 切换到apps文件夹下执行创建命令
 '''2.2 在syl/settings.py中添加应用''' 
 INSTALLED_APPS = [ 
     'verifications.apps.VerificationsConfig', 
 ]

 '''2.3 在syl/urls.py主路由中添加''' 
 path('verify/', include('verifications.urls')), 

 '''2.4 添加子路由: verifications/urls.py''' 
 from django.urls import path 
 from . import views 
 urlpatterns = [ 
     # path('image_codes/', views.ImageCodeView.as_view()) 
 ]

3.图形验证码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

4.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')

5.测试验证码接口

http://192.168.56.100:8888/verify/image_codes/?uuid=66ea64aa-fbe6-11ea-a3d3- 005056c00008

 127.0.0.1:6379># select 2 
 OK
 127.0.0.1:6379[2]># keys * 
 1) "66ea64aa-fbe6-11ea-a3d3-005056c00008" 
 127.0.0.1:6379[2]># get 66ea64aa-fbe6-11ea-a3d3-005056c00008 
 "JEZ6"

Vue下载链接: https://gitee.com/cc1204/gitproject/branches

posted @ 2020-10-06 21:41  ihszg  阅读(282)  评论(2编辑  收藏  举报