day 2019-7-9
实现的功能
- 登录
- 注册
- 车票查询接口
- 列车查询接口
- 权限、频率校验
路由配置 urls.py
import xadmin
from xadmin.plugins import xversion
xadmin.autodiscover()
xversion.register_models()
from django.conf.urls import url
# from django.contrib import admin
from app01 import views
urlpatterns = [
url(r'^xadmin/', xadmin.site.urls), # xadmin
url(r'^register/', views.Register.as_view()), #注册
url(r'^login/', views.Login.as_view()), # 登录
url(r'^index/', views.Index.as_view()), # 主页
url(r'^otn/', views.Otn.as_view()), # 查询车票数据 新增
url(r'^train_size/', views.Train_all.as_view()), # 查询列车数据 新增
]
视图 views.py
import time
from django.contrib import auth
from django.shortcuts import HttpResponse
from rest_framework.response import Response
# Create your views here.
from rest_framework.views import APIView
from app01 import models
from app01.myfile.Otn import Otn_query
from app01.myfile.my_configuration import RegSerializer
from app01.myfile.my_configuration import TokenAuth
from app01.myfile.tokens import Token
# 注册
class Register(APIView):
pass
# 设置此参数后不需要校验
authentication_classes = []
def post(self, request):
func_dic = {'code': '200', 'msg': '', "data": ''}
res = RegSerializer(data=request.data)
if res.is_valid():
res.create(res.data)
func_dic['data'] = res.data
return Response(func_dic)
return Response(res.errors)
# 登录
class Login(APIView):
def post(self, request):
func_dic = {'code': '200', 'msg': '', 'data': ''}
username = request.data.get('username')
password = request.data.get('password')
user = models.UserInfo.objects.filter(username=username).first()
if user:
user_obj = auth.authenticate(username=username, password=password)
if user_obj:
pass
# 获取token
token = Token().create_token(username)
func_dic['msg']='登录成功！'
func_dic['token']='token！'
else:
func_dic['code'] = '402'
func_dic['msg'] = '密码错误！'
else:
func_dic['code'] = '401'
func_dic['msg'] = '用户不存在！'
return Response(func_dic)
# 主页面
class Index(APIView):
authentication_classes = [TokenAuth, ]
def get(self, request):
return HttpResponse('False')
# 查询票
class Otn(APIView):
def get(self, request):
func_dic = {'code': '200', 'msg': '', "data": ''}
from_station = request.GET.get('from_station')
to_station = request.GET.get('to_station')
# 查询所有车次列表
res = time.time()
data = Otn_query().query(from_station, to_station)
# 查询车次信息
train_data = Otn_query().train(data, data[1])
# 座位
# 价格
print(time.time() - res)
if data:
func_dic['data'] = data
func_dic['train_data'] = train_data
func_dic['len'] = len(train_data)
return Response(func_dic)
# 获取所有列车
class Train_all(APIView):
def post(self, request):
train_size = request.data.get('train_size')
func_dic = {}
if train_size:
func_dic = Otn_query().train_all(train_size)
return Response(func_dic)
登录中token tokens.py
优点：无需存储，使用 signing 直接校验，安全级别高，不占内存资源
import hashlib
import time
from django.core import signing
class Token:
def __init__(self):
self.HEADER = {'typ': 'get_token', 'alg': 'default'}
self.KEY = 'LI QIANG'
self.SALT = 'www.liqianglog.top' # 加盐
self.TIME_OUT = 30*60 # 30分钟失效
def encrypt(self, obj):
"""
加密
:param obj:
:return:
"""
value = signing.dumps(obj, key=self.KEY, salt=self.SALT)
value = signing.b64_encode(value.encode()).decode()
return value
def decrypt(self, src):
"""
解密
:param src:
:return:
"""
src = str(src).split('.')[1]
src = signing.b64_decode(src.encode()).decode()
src = signing.loads(src, key=self.KEY, salt=self.SALT)
return src
def create_token(self, username):
"""
生成token信息
:param username:
:return:
"""
# 1.生成加密头信息
header = self.encrypt(self.HEADER)
# 2.构件payload
payload = {'username': username, 'iat': time.time()}
payload = self.encrypt(payload)
# 3.生成签名
md5 = hashlib.md5()
md5.update(("{}.{}".format(header, payload)).encode())
signture = md5.hexdigest()
token = "{}.{}.{}".format(header, payload, signture)
return token
def check_token(self, token,get_username):
"""
# 解密取值,校验日期,校验用户名，如果没有失效就再次生成token，失效就返回False
:param token:
:return:
"""
try:
payload = self.decrypt(token)
except:
return False
old_time = payload.get('iat', None)
if time.time() - old_time > self.TIME_OUT:
return False
username = payload.get('username', None)
if username == get_username:
return True
else:
return False
车票和列车获取 Oth.py
from app01 import models
import time
class Otn_query:
def query(self,from_station,to_station):
# 查询车站是否合法
res = time.time()
from_res = models.Station.objects.filter(english=from_station)
to_res = models.Station.objects.filter(english=to_station)
map={'from_station':[],'to_station':[]}
if not from_res and to_res:
return False
# 查询出发站和到达站所在城市的所有站名
# 查询出发车站所在城市所有站名
from_list = []
station_obj = models.Station.objects.filter(english=from_station).first()
station_objs = models.Station.objects.filter(city=station_obj.city).all().values('id','english')
for english in station_objs:
from_list.append(english.get('id'))
map['from_station'].append(english.get('english'))
# 查询到达车站所在城市所有站名
to_list = []
station_obj = models.Station.objects.filter(english=to_station).first()
station_objs = models.Station.objects.filter(city=station_obj.city).all().values('id','english')
for english in station_objs:
to_list.append(english.get('id'))
map['to_station'].append(english.get('english'))
# 查询经过出发站的所有车
from_train_dic = {}
for station in from_list:
ttation2train_obj = models.Station2Train.objects.filter(station=station).values_list('train__train_size','station_next')
for train in ttation2train_obj:
from_train_dic[train[0]]= train[1]
# 查询经过出发站的所有车
to_train_dic = {}
for station in to_list:
ttation2train_obj = models.Station2Train.objects.filter(station=station).values_list('train__train_size',
'station_next')
for train in ttation2train_obj:
to_train_dic[train[0]] = train[1]
# 两个地点都经过的站，也就是从出发站到到达站的所有车次
# 获取方向，从站次入手，顺序为正数，逆序为负数
ok_list =[]
for train_size,station_next in from_train_dic.items():
if train_size in to_train_dic:
number = int(to_train_dic[train_size]) - int(station_next)
if number>0:
ok_list.append(train_size)
# 查询所有车信息
return ok_list,map
# 查询详细站信息
def train(self,train_size_list,station_dic):
"""
需要查询信息：
车次代码、出发时间、到达时间、出发站、到达站、座位信息、历时、价格
循环查询出所需车次信息
:param lists:
:return:
"""
func_data = []
for train_size in train_size_list[0]:
# 站名代码、出发时间、到达时间、出发站、到达站
data = models.Station2Train.objects.filter(train__train_size=train_size).values_list('station__english','station__station_name','arrive_time','depart_time','price')
depart_time = arrive_time = start_stand = terminus =''
section=[] # 用来取区间位置
price=0
for i,data_list in enumerate(data,1):
# 历时
if data_list[0] in station_dic['from_station']:
start_stand = data_list[1] # 出发站
depart_time = data_list[3] # 出发时间
price = data_list[4] # 出发时间
section.append(i)
if data_list[0] in station_dic['to_station']:
terminus = data_list[1] # 到达站
arrive_time = data_list[2] # 到达时间
price = float(data_list[4]) - float(price) # 价格
section.append(i)
take = self.times(depart_time, arrive_time)
# 获取座位数
seat_number = self.seat_type(train_size,section)
train_1 = price * 3 # 商务座 * 3
train_2 = price * 2 # 一等座 * 2
train_3 = price * 1 # 二等座 * 1
train_4 = price * 5 # 高级软卧 * 4
train_5 = price * 4 # 高级硬卧 * 4
train_6 = price * 1 # 硬座 * 1
train_7 = price * 1 # 无座 * 1
info = "{:g}|{:g}|{:g}|{:g}|{:g}|{:g}|{:g}|".format(train_1,train_2,train_3,train_4,train_5,train_6,train_7)
# 返回
res = "{}|{}|{}|{}|{}|{}|{}|{}".format(train_size,depart_time,arrive_time,start_stand,terminus,take,seat_number,info)
func_data.append(res)
"""
需要对应站的座位
"""
return func_data
# 查询列车
def train_all(self,train_size):
"""
需要查询信息：
站名、始发时间、到达时间、是起终停、停留时间
:param train_size:
:return:
"""
# 站名代码、出发时间、到达时间、出发站、到达站
train_obj = models.Train.objects.filter(train_size=train_size).values_list('start_stand__station_name','terminus__station_name').first()
data = models.Station2Train.objects.filter(train__train_size=train_size).values_list('station_next',
'station__station_name','arrive_time','depart_time','is_state')
res = [train_obj[0],train_obj[1]]
func_dic = {train_size:[res,[]]}
for i, data_list in enumerate(data, 1):
start_stand = data_list[0] # 序号
station_name = data_list[1] # 站名
arrive_time = data_list[2] # 到站时间
depart_time = data_list[3] # 出发时间
is_state = data_list[4] # 出发时间
take = self.times(arrive_time,depart_time) # 历时
func_dic[train_size][1].append("{}|{}|{}|{}|{}|{}".format(start_stand,station_name,arrive_time,depart_time,take,is_state))
print(func_dic)
"""
需要对应站的座位
"""
return func_dic
# 获取 历时
def times(self,str_time_1,str_time_2):
"""
# 获取 历时
:param str_time_1:
:param str_time_2:
:return:
"""
try:
hours_1 = str_time_1.split(':')[0]
minutes_1 = str_time_1.split(':')[1]
hours_2 = str_time_2.split(':')[0]
minutes_2 = str_time_2.split(':')[1]
hours = int(hours_2)-int(hours_1)
minutes = int(minutes_2)-int(minutes_1)
except IndexError:
return "--"
if hours==0 and minutes==0:
return '--'
elif hours>0 :
if minutes < 0:
minutes = 60 + minutes
hours -= 1
if hours==0:
return "{}分钟".format(minutes)
return "{}小时{}分钟".format(hours,minutes)
else:
return "{}分钟".format(minutes)
# 查询座位数
def seat_type(self,train_size,section):
"""
:param train_size: 列车号
:param section: 区间位置
:return:
"""
data = models.Seat.objects.filter(train__train_size=train_size).values_list('is_sell','seat_type')
# 循环取座位段
number_list =['0','0','0','0','0','0','0']
for is_sell in data:
if '0' in is_sell[0][section[0]:section[1]]:
continue
index = is_sell[1]-1
number_list[index] = str(int(number_list[index]) +1)
return "|".join(number_list)
全局配置：访问评率 settings.py
# 设置访问频率,
REST_FRAMEWORK = {
'DEFAULT_THROTTLE_CLASSES':['app01.myfile.my_configuration.VisitThrottle',],
'DEFAULT_THROTTLE_RATES':{
'12306':'20/m'
}
}
自定义配置文件 my_configuration.py
from rest_framework.serializers import ModelSerializer
from app01 import models
from rest_framework import exceptions
from app01.myfile.tokens import Token
# 注册序列化
class RegSerializer(ModelSerializer):
class Meta():
model = models.UserInfo
fields = ('username','password','email')
def validate_username(self, data):
if 'sb' in data:
raise exceptions.ValidationError('内容包含敏感词汇！')
return data
def create(self, validated_data):
models.UserInfo.objects.create_user(**validated_data)
return validated_data
# 用户校验
from rest_framework.authentication import BaseAuthentication
class TokenAuth(BaseAuthentication):
def authenticate(self, request):
token = request.data.get('token')
username = request.data.get('username')
token_obj = Token().check_token(token,username)
if token_obj:
return
else:
raise exceptions.AuthenticationFailed('认证失败')
def authenticate_header(self,request):
pass
# 访问频率限制
from rest_framework.throttling import SimpleRateThrottle
class VisitThrottle(SimpleRateThrottle):
scope = '12306'
def get_cache_key(self, request, view):
return self.get_ident(request)
