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新加坡LTA的增强JSON API

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bt201502bt201503,如果bt201501可以切换至其他服务器。

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