c# - 谷歌地图 - 距离矩阵 API - 结果顺序

Question

关于 Google map - 距离矩阵 API。结果是否会保证在同一个订单中有要求？如果我请求 API 获取从一个起点到多个终点的距离，结果排序是否保证与请求的顺序相匹配？

我需要将我的业务对象映射到 API 调用的结果，但我找不到硬映射它们的方法。只有顺序接缝才能适合。

感谢您的输入。

雨果

Answer 1

1) 如果是 JSON 响应，结果将采用相同的格式。 示例:a.单一响应:

{
    "destination_addresses": [
      "Karnataka, India"
    ],
    "origin_addresses": [
       "Delhi, India"
    ],
    "rows": [
       {
           "elements": [
               {
                   "distance": {
                       "text": "1,942 km",
                       "value": 1941907
                   },
                   "duration": {
                       "text": "1 day 9 hours",
                       "value": 120420
                   },
                   "status": "OK"
               }
           ]
       }
   ],
   "status": "OK"
}

多重响应:

{
    "destination_addresses": [
    "67-89 Pacific St, Brooklyn, NY 11201, USA",
    "67-89 Pacific St, Brooklyn, NY 11201, USA",
    "67-89 Pacific St, Brooklyn, NY 11201, USA",
    "67-89 Pacific St, Brooklyn, NY 11201, USA",
    "67-89 Pacific St, Brooklyn, NY 11201, USA",
    "67-89 Pacific St, Brooklyn, NY 11201, USA",
    "557-599 Dr Wesley McDonald Ave, Brooklyn, NY 11203, USA",
    "66-0-66-26 103rd St, Rego Park, NY 11374, USA",
    "1000 N Village Ave, Rockville Centre, NY 11570, USA",
    "300-448 Beach 19th St, Far Rockaway, NY 11691, USA",
    "557-599 Dr Wesley McDonald Ave, Brooklyn, NY 11203, USA",
    "66-0-66-26 103rd St, Rego Park, NY 11374, USA",
    "1000 N Village Ave, Rockville Centre, NY 11570, USA",
    "300-448 Beach 19th St, Far Rockaway, NY 11691, USA"
],
"origin_addresses": [
    "566 Vermont St, Brooklyn, NY 11207, USA"
],
"rows": [
    {
        "elements": [
            {
                "distance": {
                    "text": "6.5 mi",
                    "value": 10423
                },
                "duration": {
                    "text": "35 mins",
                    "value": 2096
                },
                "status": "OK"
            },
            {
                "distance": {
                    "text": "6.5 mi",
                    "value": 10423
                },
                "duration": {
                    "text": "35 mins",
                    "value": 2096
                },
                "status": "OK"
            },
            {
                "distance": {
                    "text": "6.5 mi",
                    "value": 10423
                },
                "duration": {
                    "text": "35 mins",
                    "value": 2096
                },
                "status": "OK"
            },
            {
                "distance": {
                    "text": "6.5 mi",
                    "value": 10423
                },
                "duration": {
                    "text": "35 mins",
                    "value": 2096
                },
                "status": "OK"
            },
            {
                "distance": {
                    "text": "6.5 mi",
                    "value": 10423
                },
                "duration": {
                    "text": "35 mins",
                    "value": 2096
                },
                "status": "OK"
            },
            {
                "distance": {
                    "text": "6.5 mi",
                    "value": 10423
                },
                "duration": {
                    "text": "35 mins",
                    "value": 2096
                },
                "status": "OK"
            },
            {
                "distance": {
                    "text": "2.9 mi",
                    "value": 4662
                },
                "duration": {
                    "text": "18 mins",
                    "value": 1086
                },
                "status": "OK"
            },
            {
                "distance": {
                    "text": "8.5 mi",
                    "value": 13738
                },
                "duration": {
                    "text": "23 mins",
                    "value": 1367
                },
                "status": "OK"
            },
            {
                "distance": {
                    "text": "15.9 mi",
                    "value": 25544
                },
                "duration": {
                    "text": "29 mins",
                    "value": 1755
                },
                "status": "OK"
            },
            {
                "distance": {
                    "text": "13.2 mi",
                    "value": 21296
                },
                "duration": {
                    "text": "34 mins",
                    "value": 2058
                },
                "status": "OK"
            },
            {
                "distance": {
                    "text": "2.9 mi",
                    "value": 4662
                },
                "duration": {
                    "text": "18 mins",
                    "value": 1086
                },
                "status": "OK"
            },
            {
                "distance": {
                    "text": "8.5 mi",
                    "value": 13738
                },
                "duration": {
                    "text": "23 mins",
                    "value": 1367
                },
                "status": "OK"
            },
            {
                "distance": {
                    "text": "15.9 mi",
                    "value": 25544
                },
                "duration": {
                    "text": "29 mins",
                    "value": 1755
                },
                "status": "OK"
            },
            {
                "distance": {
                    "text": "13.2 mi",
                    "value": 21296
                },
                "duration": {
                    "text": "34 mins",
                    "value": 2058
                },
                "status": "OK"
            }
        ]
    }
],
"status": "OK"
}

2)我认为上面的例子也应该解决第二个问题。

3) 使用 .NET 对象可以轻松映射结果 JSON。这是下面映射的类

public class Response
    {
        public string Status { get; set; }

        [JsonProperty(PropertyName = "destination_addresses")]
        public string[] DestinationAddresses { get; set; }

        [JsonProperty(PropertyName = "origin_addresses")]
        public string[] OriginAddresses { get; set; }

        public Row[] Rows { get; set; }

        public class Data
        {
            public int Value { get; set; }
            public string Text { get; set; }
        }

        public class Element
        {
            public string Status { get; set; }
            public Data Duration { get; set; }
            public Data Distance { get; set; }
        }

        public class Row
        {
            public Element[] Elements { get; set; }
        }
    }

希望这有帮助:)