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bus_c.py
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bus_c.py
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#http://127.0.0.1:8888/login?name=xiaoming&pwd=111111
import requests
import flask, json
from flask import request
#station info http://bus.qingdaonews.com/m/detail.php?rid=643&isjson=1
#TODO reduce URL requests, at most 2 for each requests
#reduce URL
S_NAME="current_station_name"
COUNT="station_count_remain"
TIME="time_to_there"
DIRECT="station_direct"
class Bus(object):
def __init__(self, num):
self.__num__ = num
#this is used when requests running bus
self.__seg_id__ = 0
self.__line_info__ = dict()
self.__bus_info__ = dict()
URL="http://bus.qingdaonews.com/m/detail.php?rid={rid}&isjson=1".format(rid=self.__num__)
try:
r=requests.get(URL)
if r.status_code == 200:
if type(r.json()) is dict:#normal-list abnormal-dict
self.__line_info__ = r.json()
self.__seg_id__ = r.json()['stations'][0]['segment_id']
except:
pass
'''get 2 the nearest buses to this station'''#list
def get_bus_list(self, station):
URL="http://bus.qingdaonews.com/m/detail_ajax.php?rid={rid}&smid={smid}&id={id}&from=m".format(rid=self.__num__, smid=self.__seg_id__, id=station)
try:
r=requests.get(URL)
# print(r.json())
if r.status_code == 200:
if type(r.json()) is list:#normal-list abnormal-dict
return r.json()
else:
if 'status' in r.json().keys():
return [{'status':r.json()['status']}]
if 'error' in r.json().keys():
return [{'status':r.json()['error']}]
else:
return [{'status':'Failed0'}]
except:
return [{'status':'Unkown Error'}]
'''get line info, start -> destination, first/last bus time''' #dict
def get_line_info(self):
#URL="http://bus.qingdaonews.com/m/detail.php?rid={rid}&isjson=1".format(rid=self.__num__)
#try:
# r=requests.get(URL)
# if r.status_code == 200:
# if type(r.json()) is list:
# return {'status':'Failed0'}
# else:
# return r.json()["bus_info"]
# else:
# return {'status':'Failed0'}
#except:
# return {'status':'Unkown Error'}
return self.__line_info__["bus_info"]
'''get Chinese Name by station id''' #string
def get_name_by_station(self, station):
#URL="http://bus.qingdaonews.com/m/detail.php?rid={rid}&isjson=1".format(rid=self.__num__)
#try:
# r=requests.get(URL)
# if r.status_code == 200:
# if type(r.json()) is list:
# return "Known0"
# else:
# return r.json()["stations"][station-1]['station_name']
# else:
# return "Known1"
#except:
# return "Known2"
return self.__line_info__["stations"][station-1]['station_name']
'''get all the running buses running on this line''' #dict
def get_all_bus(self):
#URL="http://bus.qingdaonews.com/m/detail.php?rid={rid}&isjson=1".format(rid=self.__num__)
#try:
# r=requests.get(URL)
# if r.status_code == 200:
# if type(r.json()) is list:
# return "Known0"
# else:
# stations=r.json()["stations"]
# else:
# return "Known1"
#except:
# return "Known2"
stations=self.__line_info__["stations"]
total=len(stations)
mtcnt = 0
mocnt = 0
for s in stations:
if s[DIRECT] == "MT":
mtcnt+=1
if s[DIRECT] == "MO":
mocnt+=1
#print(mtcnt, mocnt)
total -= 1;
wb = self.get_bus_list(total)
mt_list=list()
mo_list=list()
print("MO {} -> {}".format(stations[mtcnt]['station_name'], stations[total]['station_name']))
print("MT {} -> {}".format(stations[0]['station_name'], stations[mtcnt-1]['station_name']))
while (len(wb) == 2):
if 'status' in wb[0].keys():
break;
else:
for w in wb:
tmp_dict=dict()
tmp_dict[S_NAME]=w[S_NAME]
tmp_dict[TIME]=w[TIME]
if total > mtcnt:
if((total-int(w[COUNT])) < mtcnt):
mt_list.append(tmp_dict)
else:
mo_list.append(tmp_dict)
else:
mt_list.append(tmp_dict)
#print(bus_info)
tmp=int(wb[1]['station_count_remain'])
total = total - tmp
wb = self.get_bus_list(total)
out_dict=dict()
out_dict["mt"]=mt_list
out_dict["mo"]=mo_list
return out_dict
# 创建一个服务，把当前这个python文件当做一个服务
server = flask.Flask(__name__)
# server.config['JSON_AS_ASCII'] = False
# @server.route()可以将普通函数转变为服务 登录接口的路径、请求方式
@server.route('/login', methods=['get', 'post'])
def login():
# 获取通过url请求传参的数据
num = request.values.get('num')
# 获取url请求传的密码，明文
station= request.values.get('station')
bus=Bus(num)
#wb=bus.get_all_bus()
##wb=bus.get_name_by_station(36)
#print(wb)
#exit()
wb=bus.get_bus_list(station)
print(wb)
bus_info=''
if 'status' in wb[0].keys():
resu = [{'bus': wb[0]['status']}]
return json.dumps(resu, ensure_ascii=False) # 将字典转换为json串, json是字符串
else:
for w in wb:
a=w[S_NAME]+" "+w[TIME]+"\n还有"+w[COUNT]+"站\n"
bus_info+=a
print(bus_info)
resu = {'bus': bus_info}
if len(wb) == 1: #only one on the road
return json.dumps(resu, ensure_ascii=False) # 将字典转换为json串, json是字符串
tmp=int(wb[1]['station_count_remain'])
new_station=int(station)-tmp
wb=bus.get_bus_list(new_station)
if 'status' in wb[0].keys():
resu = [{'bus': wb[0]['status']}]
resu = {'bus': bus_info}
return json.dumps(resu, ensure_ascii=False) # 将字典转换为json串, json是字符串
else:
for w in wb:
new_remain=int(w['station_count_remain'])+tmp
a=w['current_station_name']+" "+w['time_to_there']+"\n还有"+str(new_remain)+"站\n"
bus_info+=a
resu = {'bus': bus_info}
return json.dumps(resu, ensure_ascii=False) # 将字典转换为json串, json是字符串
if __name__ == '__main__':
server.run(debug=True, port=39000, host='0.0.0.0')