如何使用 json 解析路由特征权重响应？

Question

根据 API 文档 (https://developer.here.com/rest-apis/documentation/routing/topics/resource-param-type-routing-mode.html)，路线要素权重显示为 RouteFeatureType: RouteFeatureWeightType 对列表。

如果我想在一个calculateroute请求中设置2个或更多权重，即

"motorway:-2,boatFerry:-3

我在 CalculateRouteResponseType 响应中得到了结果路线的相关部分：

\"feature\":
[{\"value\":\"boatFerry\",\"weight\":[\"Byte\",-3]},{\"value\":\"motorway\",\"weight\":[\"Byte\",-2]}]

很明显特征是一个值-权重对的列表。但是代表每一对的 json 对象是什么样子的呢？我无法成功解析权重列表。

到目前为止，我已经

public enum RouteFeatureType
{
    TollRoad,
    motorway,
    boatFerry,
    railFerry,
    Tunnel,
    DirtRoad,
    Park
}
public class RouteFeatureWeight
{
    public RouteFeatureType value { get; set; }
    public List<string> weight { get; set; }
}

这给了我作为字符串列表的权重 {"Byte", "-3"}.

什么是正确的类型而不是 List，所以我获得了正确的 RouteFeatureWeightType 值，定义为

public enum RouteFeatureWeightType
{
    StrictExclude = -3,
    SoftExclude = -2,
    Avoid = -1,
    Normal = 0
}

?

Answer 1

为什么要解析响应特征数组，因为它与您在相关请求中发送的特征相匹配？

否则，我认为您不需要保持响应特征数组不变。因此，你可以有一个解析方法如下（接近JavaScript的伪代码，你可以适配）：

parseFeatures(responseFeatureArray) {
  var features = [];
  for (var i = 0; i < responseFeatureArray.length; i++) {
    var featureObject = responseFeatureArray[i];
    var featureName = featureObject.get("value");
    var featureWeight = parseInt(featureObject.get("weight")[1]);
    features.push(new RouteFeatureWeight(featureName, featureWeight));
  }
  return features;
}

让我知道进展如何。干杯。

Answer 2

我这样解决了问题

public class RouteFeatureWeight
{
   public RouteFeatureType value { get; set; }
   public List<dynamic> weight { get; set; }
   public RouteFeatureWeightType FeatureWeight { get; set; }
}

反序列化响应后（使用Newtonsoft.Json）

HereResponseType response = JsonConvert.DeserializeObject<HereResponseType>(jsonResponse);

我在每个 RouteFeatureWeight 对象中将权重转换为 RouteFeatureWeightType 枚举类型

FeatureWeight = (RouteFeatureWeightType)weight[1];

如何使用 json 解析路由特征权重响应？

How to parse route feature weightings response with json?

c#

json

here-api