一、概述

妹子工作时需要大量地查询火车车次至南京的信息，包括该车次到达站(南京站or南京南站)、到达时间、出发时间等，然后根据这些信息做下一步工作。

版本结束，趁着间歇期，帮她弄了个简易的批量查询工具，粉色的按钮是给她用的~哈哈哈！ (๑*◡*๑)

大概80行代码，主要是：

界面读取待查询车次 - - - - 调用车次信息接口- - - - 解析返回数据 - - - - 组装结果 - - - - 封装到界面(tkinter)

最终效果图：

二、实现

1.界面读取待查询车次

2.调用车次信息接口

题外话，之前是做的从界面读取待查询车次信息，然后构造成携程的查询url，取到数据后筛选信息；

但后续在取到页面数据后，decode时发现总抛解码异常，百度之，原因是页面源码中编码格式有多样，decode时需要加个错误跳过参数。。

但车次信息恰巧在跳过之列。。。

但是已经跟妹子说很快就能搞好(装b)，于是就直接申请了某第三方平台的接口 QAQ

网上查了下，免费的接口基本都不提供服务了。于是用的某第三方平台的接口(某速数据)，注册赠1000条，续费5元1W条(暂时没续=。=)

#调用车次信息接口，获取车次信息

def getTrainScheduleInfo(self,trainSchedule):

trainBaseInfo = ""

#拼接URL

url = "http://api.xxxx.com/train/line?appkey=xxxxxx&trainno=" + trainSchedule

#print(url)

#获取数据

try:

trainBaseInfo = self.send_GET_request(url)　　#发送GET请求，python3.X是用urllib.request库，网上很多

except:

print("ERROR:FUNC getTrainScheduleInfo select_items_from_url failed.url = %s ,flag = %s"%(trainSchedule))

return trainBaseInfo

3.解析返回数据

返回数据为json类型的字符串，直接json.loads后，解析即可

#获取所有待查询车次信息

allTrainResultDic = {} #车次查询结果集合

for trainSchedule in trainScheduleList:

trainBaseInfo = self.getTrainScheduleInfo(trainSchedule) #json string

# #----测试----

# trainBaseInfo = '''{"status":"0","msg":"ok","result":{"trainno":"G8","type":"高铁","list":[{"sequenceno":"1","station":"上海虹桥","day":"1","arrivaltime":"----","departuretime":"19:00","stoptime":"0","costtime":"0","distance":"0","isend":"0","pricesw":"","pricetd":"","pricegr1":"","pricegr2":"","pricerw1":"0","pricerw2":"0","priceyw1":"0","priceyw2":"0","priceyw3":"0","priceyd":"0.0","priceed":"0.0"},{"sequenceno":"2","station":"南京南","day":"1","arrivaltime":"20:00","departuretime":"20:02","stoptime":"2","costtime":"60","distance":"295","isend":"0","pricesw":"429.5","pricetd":"0","pricegr1":"0","pricegr2":"0","pricerw1":"0","pricerw2":"0","priceyw1":"0","priceyw2":"0","priceyw3":"0","priceyd":"229.5","priceed":"134.5"},{"sequenceno":"3","station":"济南西","day":"1","arrivaltime":"21:59","departuretime":"22:01","stoptime":"2","costtime":"179","distance":"0","isend":"0","pricesw":"1263.5","pricetd":"","pricegr1":"","pricegr2":"","pricerw1":"0","pricerw2":"0","priceyw1":"0","priceyw2":"0","priceyw3":"0","priceyd":"673.5","priceed":"398.5"},{"sequenceno":"4","station":"天津南","day":"1","arrivaltime":"22:59","departuretime":"23:01","stoptime":"2","costtime":"239","distance":"0","isend":"0","pricesw":"1603.5","pricetd":"","pricegr1":"","pricegr2":"","pricerw1":"0","pricerw2":"0","priceyw1":"0","priceyw2":"0","priceyw3":"0","priceyd":"853.5","priceed":"508.5"},{"sequenceno":"5","station":"北京南","day":"1","arrivaltime":"23:34","departuretime":"23:34","stoptime":"0","costtime":"274","distance":"0","isend":"1","pricesw":"1748","pricetd":"","pricegr1":"","pricegr2":"","pricerw1":"0","pricerw2":"0","priceyw1":"0","priceyw2":"0","priceyw3":"0","priceyd":"933.0","priceed":"553.0","costtimetxt":"4时34分"}]}}'''

# #----测试----

print("trainBaseInfo =",trainBaseInfo)

#解析

if trainBaseInfo:

try:

trainBaseInfo_loads = json.loads(trainBaseInfo)

if trainBaseInfo_loads["status"] == "0":

resultNodeValue = trainBaseInfo_loads["result"]

trainnoNodeValue = resultNodeValue["trainno"] #查询车次代码

typeNodeValue = resultNodeValue["type"] #车次类型

listNodeValue = resultNodeValue["list"] #途径站点信息集合 list

#筛选出途经南京、南京南

for trainInfo in listNodeValue:

if (cityName1 in trainInfo.values()) or (cityName2 in trainInfo.values()):

#解析数据

arrivedStation = trainInfo["station"] #到达站

arrivedTime = trainInfo["arrivaltime"] #到站时间

leaveTime = trainInfo["departuretime"] #离站时间

if arrivedStation == "南京":

arrivedStation = "南京站"

# 存储该车次查询结果

trainResult = []

trainResult.append(arrivedStation)

trainResult.append(arrivedTime)

trainResult.append(leaveTime)

trainResult.append(typeNodeValue)

allTrainResultDic[trainSchedule] = trainResult

else:

#self.write_log_to_Text("ERROR:车次: %s 无途径南京站信息，跳过" % trainSchedule)

continue

else:

self.write_log_to_Text("ERROR:车次: %s 检查返回数据状态码不为0，跳过" % trainSchedule)

continue

except:

self.write_log_to_Text("ERROR:车次：%s 返回的json串失败 "% trainSchedule)

else:

self.write_log_to_Text("ERROR:车次: %s 查询接口返回信息为空，已跳过"%trainSchedule)

continue

print(allTrainResultDic)

4.组装结果、界面输出

#组装结果界面输出

self.result_data_Text.delete(1.0, END)

head = "车次 南京到达站 到站时间 离站时间 类型"

self.result_data_Text.insert(1.0, head)

for train in allTrainResultDic.keys():

outMsg = "\n" + "-" * 52 + "\n" + "%4s"%train + "%9s"%allTrainResultDic[train][0] + "%13s"%allTrainResultDic[train][1] + "%12s"%allTrainResultDic[train][2] + "%8s"%allTrainResultDic[train][3]

self.result_data_Text.insert(END,outMsg)

self.write_log_to_Text("INFO：获取火车至南京信息完成")

总结

以上所述是小编给大家介绍的python 3.6 tkinter+urllib+json实现火车车次信息查询功能，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持！