新加坡LTA的增强JSON API
Posted on 07 Apr 2016 新加坡数据社会公共交通API 添加评论本文转载自新网站同名文章：https://whyhow.github.io/2016/04/07/ltaapi.html
昨天的文章提到了LTA官方的API的JSON接口，今天增强了一下API的功能，定义了JSON版本API的增强版。接口如下：
https://bt201501.appspot.com/bus?stop=[站号]&bus=[公交车号]&pretty=[pretty?]
例如， 查看李伟楠图书馆的状态可以用：
https://bt201501.appspot.com/bus?stop=27211&pretty=1
返回的信息是这样的：
{
"BusStopID": "27211",
"BusStopLocation": {
"Latitude": "103.68050066497821",
"Longitude": "103.68050066497821"
},
"BusStopName": "Lee Wee Nam Lib",
"ServerTime": "23:16:46",
"Services": [
{
"NextBus": {
"EstimateDistance": "1285.7 m",
"EstimatedArrival": "23:20:55",
"Feature": "WAB",
"Latitude": "1.3441753333333333",
"Load": "Seats Available",
"Longitude": "103.69143883333334",
"VisitNumber": "1"
},
"ServiceNo": "179",
"Status": "In Operation",
"SubsequentBus": {
"EstimateDistance": "",
"EstimatedArrival": "23:29:46",
"Feature": "WAB",
"Latitude": "0",
"Load": "Seats Available",
"Longitude": "0",
"VisitNumber": "1"
},
"SubsequentBus3": {
"EstimateDistance": "",
"EstimatedArrival": "23:32:06",
"Feature": "WAB",
"Latitude": "0",
"Load": "Seats Available",
"Longitude": "0",
"VisitNumber": "1"
}
}
]
}主要增加的信息包括站点的GPS位置，服务器的时间和预计的到达距离。接口的注意事项和原API是一样的。同时还有一个缩减版的API，去掉了很多个人不太需要的信息。接口如下：
https://bt201501.appspot.com/v3?stop=[站号]&bus=[公交车号]&pretty=[pretty?]
同样Lee Wee Nam Lib的查询结果如下：
https://bt201501.appspot.com/v3?stop=27211&pretty=1
{
"BusStopName": "Lee Wee Nam Lib",
"ServerTime": "23:23:38",
"Services": [
{
"NextBus": {
"EstimateDistance": "2370.4 m",
"EstimatedArrival": "23:31:48",
"Load": "Seats Available"
},
"ServiceNo": "179",
"Status": "In Operation",
"SubsequentBus": {
"EstimateDistance": "",
"EstimatedArrival": "23:39:06",
"Load": "Seats Available"
},
"SubsequentBus3": {
"EstimateDistance": "",
"EstimatedArrival": "23:45:06",
"Load": "Seats Available"
}
}
]
}接口同样部署到了bt201502和bt201503，如果bt201501可以切换至其他服务器。
