def graph_captcha():
text, image = Captcha.gene_code()
cache.set(key=text.lower(), value=text.lower())
out = BytesIO() #数据保存在内存中
image.save(out, 'png')
out.seek(0) #指针归0
resp = make_response(out.read())
resp.content_type = 'image/png'
return resp
def get(self, request):
uuid = request.GET.get('uuid')
last_uuid = request.GET.get('last_uuid')
if not uuid:
# 参数不全,返回错误信息
return JsonResponse({'errorcode': RET.PARAMERR, 'errormsg': "参数错误"})
# text:验证码的文本信息 image:验证码的图片一张
image, text = Captcha.gene_code()
redis_conn = get_redis_connection('default')
try:
# 将图片的UUID存储到redis数据库中,过期时间设置为300秒
redis_conn.set('ImageCode:' + uuid, text, settings.IMAGE_CODE_REDIS_EXPIRES)
except Exception as e:
logger.error(e)
return JsonResponse({'code': RET.DBERR, 'message': "数据库错误"})
if last_uuid is not None:
# 删除之前的图片验证码的UUID
redis_conn.delete('ImageCode:' + last_uuid)
# 设置响应的内容类型为图片
return HttpResponse(image, content_type='image/jpeg')
