我正在开发一个应用程序，该应用程序使用谷歌 API 来获取传输解决方案，以便在所需时间到达某个位置。
我调用 google API 的代码在“驾驶”和“步行”旅行模式下完美运行，但在“公交”和“骑自行车”的情况下，响应始终标记为“ZERO_RESULTS”状态，并且不计算任何路线。根据谷歌文档，这意味着在必须计算解决方案的国家/地区不提供过境和骑自行车。我尝试了几个国家，我总是得到相同的结果，我也尝试了概述中的谷歌示例（用于过境），但它不起作用。
我通过 HTTPS 请求传递的参数是：出发地、目的地、出行方式、到达时间。我尝试的第一件事是更改arrival_time，以防该值涉及过去或太遥远的未来，但它不起作用。
如果我没有通过“arrival_time”，则响应是完美的，但我不明白，因为在 Google 文档中，arrival_time 是 https 请求的一个可能参数，也适用于过境旅行模式。没有这个论点，这个请求对我的目标毫无用处。
奇怪的是，如果我通过“过境”（到达或离开时间），响应是这样的：
{
"available_travel_modes" : [ "DRIVING", "WALKING" ],
"geocoded_waypoints" : [
{
"geocoder_status" : "OK",
"place_id" : "ChIJu46S-ZZhLxMROG5lkwZ3D7k",
"types" : [ "locality", "political" ]
},
{
"geocoder_status" : "OK",
"place_id" : "ChIJ53USP0nBhkcRjQ50xhPN_zw",
"types" : [ "locality", "political" ]
}
],
"routes" : [],
"status" : "ZERO_RESULTS"
}
如果我通过“骑自行车”（所有其他参数不变）：
{
"available_travel_modes" : [ "DRIVING", "WALKING", "TRANSIT" ],
"geocoded_waypoints" : [
{
"geocoder_status" : "OK",
"place_id" : "ChIJu46S-ZZhLxMROG5lkwZ3D7k",
"types" : [ "locality", "political" ]
},
{
"geocoder_status" : "OK",
"place_id" : "ChIJ53USP0nBhkcRjQ50xhPN_zw",
"types" : [ "locality", "political" ]
}
],
"routes" : [],
"status" : "ZERO_RESULTS"
}
所以在第二种情况下，API 说 TRANSIT 可用，这根本没有意义！
我使用的位置格式是地理坐标，以避免出现歧义。
希望我提供足够的信息以使您能够帮助我。
编辑：对不起，我认为我的帖子已经足够清楚了。我使用 Google Directions API：https ://developers.google.com/maps/documentation/directions/
我的问题是“过境”和“骑自行车”作为旅行模式，不是代码问题，但问题出现在 https 响应级别，即使在我获得的概述中可以找到“过境”的谷歌示例“ZERO_RESULTS”响应。这是示例的 URL：
https://maps.googleapis.com/maps/api/directions/json?origin=75+9th+Ave+New+York,+NY&destination=MetLife+Stadium+1+MetLife+Stadium+Dr+East+Rutherford,+NJ+07073&mode=transit&arrival_time=1391374800&key=YOUR_API_KEY
这是两个 URL，它让我得到了我上面复制的两个响应：with transit：
https://maps.googleapis.com/maps/api/directions/json?origin=Rome&destination=Milan&mode=transit&arrival_time=1513162800000&key=++API_KEY++
和骑自行车：
https://maps.googleapis.com/maps/api/directions/json?origin=Rome&destination=Milan&mode=transit&arrival_time=1513162800000&key=++API_KEY++
在我用于起点和目的地地理坐标的代码中，如下所示：
https://maps.googleapis.com/maps/api/directions/json?origin=41.9027835,12.496365500000024&destination=45.4642035,9.189981999999986&mode=transit&arrival_time=1513162800000&key=++API_KEY++
唯一的区别是谷歌不识别地理编码的航点：
{
"available_travel_modes" : [ "DRIVING", "WALKING" ],
"geocoded_waypoints" : [ {}, {} ],
"routes" : [],
"status" : "ZERO_RESULTS"
}
如果我使用“驾驶”作为旅行模式，这行得通：
https://maps.googleapis.com/maps/api/directions/json?origin=41.9027835,12.496365500000024&destination=45.4642035,9.189981999999986&mode=driving&arrival_time=1513162800000&key=++API_KEY++
{
"geocoded_waypoints" : [
{
"geocoder_status" : "OK",
"place_id" : "EjJQaWF6emEgZGVsbGEgUmVwdWJibGljYSwgMTAsIDAwMTg1IFJvbWEgUk0sIEl0YWxpYQ",
"types" : [ "street_address" ]
},
{
"geocoder_status" : "OK",
"place_id" : "ChIJC5u9LazGhkcRXAZQFNDTpKc",
"types" : [ "street_address" ]
}
],
"routes" : [
{
"bounds" : {
"northeast" : {
"lat" : 45.4731019,
"lng" : 12.6177051
},
"southwest" : {
"lat" : 41.9028523,
"lng" : 9.1839517
}
},
"copyrights" : "Dati mappa ©2017 Google",
"legs" : [
{
"distance" : {
"text" : "573 km",
"value" : 572600
},
"duration" : {
"text" : "5 ore 51 min",
"value" : 21069
},
"end_address" : "Via Silvio Pellico, 2, 20121 Milano MI, Italia",
"end_location" : {
"lat" : 45.46495119999999,
"lng" : 9.1892874
},
"start_address" : "Piazza della Repubblica, 10, 00185 Roma RM, Italia",
"start_location" : {
"lat" : 41.9028523,
"lng" : 12.4964704
},
"steps" : [
{
"distance" : {
"text" : "93 m",
"value" : 93
},
"duration" : {
"text" : "1 min",
"value" : 19
},
"end_location" : {
"lat" : 41.9035781,
"lng" : 12.4959908
},
"html_instructions" : "Procedi in direzione \u003cb\u003enord\u003c/b\u003e da \u003cb\u003ePiazza della Repubblica\u003c/b\u003e verso \u003cb\u003eVia Giuseppe Romita\u003c/b\u003e",
"polyline" : {
"points" : "ycw~F}ugkAU?I@E@E@a@RG@EDED_@d@OP"
},
"start_location" : {
"lat" : 41.9028523,
"lng" : 12.4964704
},
"travel_mode" : "DRIVING"
},
// cut
{
"distance" : {
"text" : "52 m",
"value" : 52
},
"duration" : {
"text" : "1 min",
"value" : 14
},
"end_location" : {
"lat" : 45.4665738,
"lng" : 9.1889772
},
"html_instructions" : "Continua su \u003cb\u003eVia Santa Margherita\u003c/b\u003e",
"polyline" : {
"points" : "ogotGoxaw@`@`@j@h@"
},
"start_location" : {
"lat" : 45.4669622,
"lng" : 9.189359399999999
},
"travel_mode" : "DRIVING"
},
{
"distance" : {
"text" : "0,2 km",
"value" : 192
},
"duration" : {
"text" : "1 min",
"value" : 87
},
"end_location" : {
"lat" : 45.46495119999999,
"lng" : 9.1892874
},
"html_instructions" : "Svolta a \u003cb\u003esinistra\u003c/b\u003e e prendi \u003cb\u003eVia Silvio Pellico\u003c/b\u003e",
"maneuver" : "turn-left",
"polyline" : {
"points" : "aeotGcvaw@Xw@DCBAxC@~A?d@A"
},
"start_location" : {
"lat" : 45.4665738,
"lng" : 9.1889772
},
"travel_mode" : "DRIVING"
}
],
"traffic_speed_entry" : [],
"via_waypoint" : []
}
],
"overview_polyline" : {
"points" : "//collapsed//"
},
"summary" : "A1/E35 e A1",
"warnings" : [],
"waypoint_order" : []
}
],
"status" : "OK"
}
如果我在没有到达时间的情况下使用“过境”，它会起作用：
https://maps.googleapis.com/maps/api/directions/json?origin=41.9027835,12.496365500000024&destination=45.4642035,9.
189981999999986&mode=transit&key=++API_KEY++
和：
{
"geocoded_waypoints" : [
{
"geocoder_status" : "OK",
"place_id" : "EjJQaWF6emEgZGVsbGEgUmVwdWJibGljYSwgMTAsIDAwMTg1IFJvbWEgUk0sIEl0YWxpYQ",
"types" : [ "street_address" ]
},
{
"geocoder_status" : "OK",
"place_id" : "ChIJRYxePKzGhkcRsgPwamn2Pfo",
"types" : [ "street_address" ]
}
],
"routes" : [
{
"bounds" : {
"northeast" : {
"lat" : 45.4969308,
"lng" : 12.5528041
},
"southwest" : {
"lat" : 41.892252,
"lng" : 9.188611
}
},
"copyrights" : "Dati mappa ©2017 Google",
"legs" : [
{
"arrival_time" : {
"text" : "13:55",
"time_zone" : "Europe/Rome",
"value" : 1513169733
},
"departure_time" : {
"text" : "10:10",
"time_zone" : "Europe/Rome",
"value" : 1513156231
},
"distance" : {
"text" : "571 km",
"value" : 571467
},
"duration" : {
"text" : "3 ore 45 min",
"value" : 13502
},
"end_address" : "Piazza del Duomo, 1, 20121 Milano MI, Italia",
"end_location" : {
"lat" : 45.4639037,
"lng" : 9.188611
},
"start_address" : "Piazza della Repubblica, 10, 00185 Roma RM, Italia",
"start_location" : {
"lat" : 41.9028429,
"lng" : 12.4964793
},
"steps" : [
{
"distance" : {
"text" : "0,1 km",
"value" : 102
},
"duration" : {
"text" : "1 min",
"value" : 87
},
"end_location" : {
"lat" : 41.902193,
"lng" : 12.4958041
},
"html_instructions" : "Cammina fino a Repubblica",
"polyline" : {
"points" : "wcw~F_vgkA@CBADABA@A@?B?D?B?B@B?B@BBB@@BBBDH@D@H@@?D?BDRBL?@DXBLBJDHBFVM"
},
"start_location" : {
"lat" : 41.9028429,
"lng" : 12.4964793
},
"steps" : [
{
"distance" : {
"text" : "54 m",
"value" : 54
},
"duration" : {
"text" : "1 min",
"value" : 49
},
"end_location" : {
"lat" : 41.9024775,
"lng" : 12.4962611
},
"html_instructions" : "Procedi in direzione \u003cb\u003esudest\u003c/b\u003e verso \u003cb\u003ePiazza della Repubblica\u003c/b\u003e",
"polyline" : {
"points" : "wcw~F_vgkA@CBADABA@A@?B?D?B?B@B?B@BBB@@BBBDH@D@H@@?D?B"
},
"start_location" : {
"lat" : 41.9028429,
"lng" : 12.4964793
},
"travel_mode" : "WALKING"
},
{
"distance" : {
"text" : "48 m",
"value" : 48
},
"duration" : {
"text" : "1 min",
"value" : 38
},
"end_location" : {
"lat" : 41.902193,
"lng" : 12.4958041
},
"html_instructions" : "Esci dalla rotonda e prendi \u003cb\u003ePiazza della Repubblica\u003c/b\u003e",
"polyline" : {
"points" : "oaw~FstgkADRBL?@DXBLBJDHBFVM"
},
"start_location" : {
"lat" : 41.9024775,
"lng" : 12.4962611
},
"travel_mode" : "WALKING"
}
],
"travel_mode" : "WALKING"
},
{
"distance" : {
"text" : "0,4 km",
"value" : 437
},
"duration" : {
"text" : "1 min",
"value" : 46
},
"end_location" : {
"lat" : 41.9011732,
"lng" : 12.4996019
},
"html_instructions" : "Metropolitana verso Anagnina",
"polyline" : {
"points" : "u_w~FwqgkAeBIBoA@I|ByM~CmELR"
},
"start_location" : {
"lat" : 41.902193,
"lng" : 12.4958041
},
"transit_details" : {
"arrival_stop" : {
"location" : {
"lat" : 41.9011732,
"lng" : 12.4996019
},
"name" : "Termini"
},
"arrival_time" : {
"text" : "10:12",
"time_zone" : "Europe/Rome",
"value" : 1513156353
},
"departure_stop" : {
"location" : {
"lat" : 41.902193,
"lng" : 12.4958041
},
"name" : "Repubblica"
},
"departure_time" : {
"text" : "10:11",
"time_zone" : "Europe/Rome",
"value" : 1513156307
},
"headsign" : "Anagnina",
"line" : {
"agencies" : [
{
"name" : "Atac",
"phone" : "011 39 06 57003",
"url" : "http://www.atac.roma.it/"
}
],
"color" : "#e27439",
"name" : "Metro A",
"short_name" : "MEA",
"url" : "http://muovi.roma.it/percorso/js?query=MEA&cl=1",
"vehicle" : {
"icon" : "//maps.gstatic.com/mapfiles/transit/iw2/6/subway2.png",
"local_icon" : "//maps.gstatic.com/mapfiles/transit/iw2/6/it-metro.png",
"name" : "Metropolitana",
"type" : "SUBWAY"
}
},
"num_stops" : 1
},
"travel_mode" : "TRANSIT"
},
{
"distance" : {
"text" : "2,6 km",
"value" : 2641
},
"duration" : {
"text" : "6 min",
"value" : 330
},
"end_location" : {
"lat" : 45.4639037,
"lng" : 9.188611
},
"html_instructions" : "Metropolitana verso San Donato",
"polyline" : {
"points" : "//collapsed//"
},
"start_location" : {
"lat" : 45.4844397,
"lng" : 9.202612799999999
},
"transit_details" : {
"arrival_stop" : {
"location" : {
"lat" : 45.4639037,
"lng" : 9.188611
},
"name" : "Duomo"
},
"arrival_time" : {
"text" : "13:55",
"time_zone" : "Europe/Rome",
"value" : 1513169730
},
"departure_stop" : {
"location" : {
"lat" : 45.4844397,
"lng" : 9.202612799999999
},
"name" : "Centrale FS"
},
"departure_time" : {
"text" : "13:50",
"time_zone" : "Europe/Rome",
"value" : 1513169400
},
"headsign" : "San Donato",
"line" : {
"agencies" : [
{
"name" : "COMUNE DI MILANO",
"phone" : "011 39 02 0202",
"url" : "http://www.muoversi.milano.it/"
}
],
"color" : "#ffea00",
"name" : "M3 - Linea Gialla",
"short_name" : "3",
"vehicle" : {
"icon" : "//maps.gstatic.com/mapfiles/transit/iw2/6/subway2.png",
"local_icon" : "//maps.gstatic.com/mapfiles/transit/iw2/6/it-metro.png",
"name" : "Metropolitana",
"type" : "SUBWAY"
}
},
"num_stops" : 4
},
"travel_mode" : "TRANSIT"
}
],
"traffic_speed_entry" : [],
"via_waypoint" : []
}
],
"overview_polyline" : {
"points" : "//collapsed//"
},
"summary" : "",
"warnings" : [
"Le indicazioni per tragitti a piedi sono in versione beta. Presta attenzione – questo percorso potrebbe non disporre di marciapiede o aree pedonali."
],
"waypoint_order" : []
}
],
"status" : "OK"
}