Python使用django框架实现多人在线匿名聊天的小程序

 
我的昵称:{{user_name}}更名
 

  

  
 
 

 
消息
 
 发送消息
 
{{user_id}}
 
{{user_ip}}
 {{csrf_token}}

# 返回基础页面
def happy(request):
 user_info = UserInfo()
 # 初始用户名为匿名用户
 user_name = "匿名用户"
 user_info.user_name = user_name
 # 利用时间产生临时ID
 user_id = int(time.time())
 user_info.user_id = user_id
 # 获取用户ip
 user_ip = wrappers.get_client_ip(request)
 user_info.user_ip = user_ip
 user_info.save()
 return render(request, 'chatroom/happy.html', locals())
# 保存聊天内容
def save_chat_log(request):
 try:
  print("后端收到了ajax消息")
  chatinfo = ChatInfo()
  # 获取前端传过来的数据
  chat_content = wrappers.post(request, "chat_content")
  user_ip = wrappers.get_client_ip(request)
  user_name = wrappers.post(request, "user_name")
  user_id = wrappers.post(request, "user_id")
  # 将数据存入数据库
  chatinfo.chat_content = chat_content
  chatinfo.user_ip = user_ip
  chatinfo.user_name = user_name
  chatinfo.user_id = user_id
  chatinfo.save()
  return JsonResponse({"ret":0})
 except:
  return JsonResponse({"ret":"保存出现问题"})
  pass
# 获取最近的聊天信息
def get_near_log(request):
 try:
  # 获取数据库内所有的信息
  all_info = ChatInfo.objects.all()
  # 获取数据库内最后一条消息的id
  id_max =ChatInfo.objects.aggregate(Max('id'))
  last_id = id_max["id__max"]
  # print("后台数据库内最新的id为", last_id)
  # 获取请求的id值
  old_last_id = wrappers.post(request, "last_id")
  print(old_last_id,"<-<-")
  print(old_last_id, type(old_last_id),"-->")
  # print("后台发送过来的id为",old_last_id)
  # 返回的信息字典,返回当前时间(current_date),返回信息列表(id_info)
  # 如果第一次请求,则回复最后一条消息的id
  if int(old_last_id) == 0:
   user_ip = wrappers.get_client_ip(request)
   result_dict = dict()
   result_dict["last_id"] = last_id
   result_dict["info"] = [{"id":"-->", "mess":"欢迎"+user_ip+"来到聊天室!", "user_name":"系统消息:"}]
   result_dict["user_id"] = ""
   result_dict = json.dumps(result_dict,ensure_ascii=False)
   # print("第一次握手")
   return JsonResponse({"data":result_dict})
  # 如果数据内没有消息更新
  elif int(old_last_id) >= int(last_id):
   result_dict = dict()
   result_dict["last_id"] = last_id
   result_dict["info"] = [{last_id:"欢迎再次来到聊天室!"}]
   result_dict["user_id"] = ""
   result_dict = json.dumps(result_dict,ensure_ascii=False)
   # print("一次无更新的交互")
   return JsonResponse({"data":result_dict})
  # 如果有消息更新
  else:
   # print("有更新的回复")
   result_dict = dict()
   # 获取新的消息对象集合
   the_new_info =ChatInfo.objects.filter(id__gt=old_last_id)
   # 创建消息列表
   mess_list = list()
   # 将最新的消息组成字典进行返回
   for info in the_new_info:
    # print(info)
    # print ("-->",info.chat_content, info.id)
    # 创建消息字典
    mess_dic = dict()
    mess_dic["id"] = info.id
    mess_dic["mess"] = info.chat_content
    # 将消息所属的用户添加到消息列表
    mess_dic["user_name"] = info.user_name
    mess_dic["user_id"] = info.user_id
    # 将消息字典添加到消息列表
    mess_list.append(mess_dic)
  result_dict["last_id"] = last_id
  result_dict["info"] = mess_list
  # result_dict["info"] = [{"id":3, "mess":"hahah"}, {"id":4, "mess":"666"}]
  result_dict = json.dumps(result_dict,ensure_ascii=False)
  # print("--->>>", type(result_dict))
  return JsonResponse({"data":result_dict})
 except:
  return JsonResponse({"ret":"刷新出现问题"})
  pass