我尝试使用下面的代码完全满足我在弹性搜索中的位置排序要求，当位置即将到来时它可以正常工作，但是当位置纬度和长距离不到时，我的Nest c＃代码为我提供了异常
var result = this._esclient.EsClient().Search<CarSearchRequest>(a => a
.Index("XXX")
.Type("XXX")
.Size(10)
.From(pageCount)
.Query(q => q.Bool(b => b.Must(m => m.Terms(p => p.Field(ab => ab.carType).Terms(searchAjaxRequest.carBodyType)),
m => m.Terms(p =>
{
var query = new TermsQueryDescriptor<CarSearchRequest>();
if (searchAjaxRequest.CarCityRange < 2)
{
query = p.Field(ab => ab.dealerCity).Terms(searchAjaxRequest.dealerCity);
}
return query;
}
),
m => m.Range(p =>
{
var query = new NumericRangeQueryDescriptor<CarSearchRequest>();
if (searchAjaxRequest.kilometers == 75001)
{
query = p.Field(ab => ab.kmRun).GreaterThanOrEquals(searchAjaxRequest.kilometers);
}
else
{
query = p.Field(ab => ab.kmRun).LessThanOrEquals(searchAjaxRequest.kilometers);
}
return query;
}
),
m => m.Range(p => p.Field(ab =>
m => m.GeoDistance(p =>
{
var query = new GeoDistanceQueryDescriptor<CarSearchRequest>();
if (searchAjaxRequest.location != null)
{
if (searchAjaxRequest.CarCityRange == 1)
{
query = p.Field(lk => lk.location).Location(searchAjaxRequest.location.lat, searchAjaxRequest.location.lon);
}
else
{
query = p.Field(lk => lk.location)
.Location(searchAjaxRequest.location.lat, searchAjaxRequest.location.lon)
.Distance(searchAjaxRequest.CarCityRange, DistanceUnit.Kilometers);
}
return query;
}
return query;
}
))
)
)
.Sort(s => s.Ascending(fs => fs.current_stage)
.Field(gh =>
{
var query = new SortFieldDescriptor<CarSearchRequest>();
if (searchAjaxRequest.sortingFilter != null)
{
if (searchAjaxRequest.sortingFilter == "titleasc")
{
query = gh.Field(tt => tt.model).Order(SortOrder.Ascending);
}
else if (searchAjaxRequest.sortingFilter == "introductiondatedesc")
{
query = gh.Field(tt => tt.mfYear).Order(SortOrder.Descending);
}
return query;
}
else if (searchAjaxRequest.category != null)
{
if (searchAjaxRequest.category == "recentlyViewd")
{
query = gh.Field(tt => tt.createdDate).Order(SortOrder.Descending);
}
else if (searchAjaxRequest.category == "topRated")
{
query = gh.Field(tt => tt.overallRating).Order(SortOrder.Descending);
}
return query;
}
return query;
}
).GeoDistance(g =>
{
var locatioSorting = new SortGeoDistanceDescriptor<CarSearchRequest>();
if (searchAjaxRequest.location != null)
{
locatioSorting = g.Field(ab => ab.location).Order(SortOrder.Ascending)
.Unit(DistanceUnit.Kilometers)
.Mode(SortMode.Min)
.Points(new GeoLocation(searchAjaxRequest.location.lat, searchAjaxRequest.location.lon));
}
return locatioSorting;
}
).Ascending(fk => fk.trvCertified).Ascending(sa => sa.kmRun)
));
代码中出现的异常。
System.NullReferenceException：对象引用未设置为对象的实例。
在Nest.FieldResolver.Resolve（Field field）
在Nest.SortJsonConverter。<> c__DisplayClass6_1.b__0（JsonWriter w）
在Nest.ReserializeJsonConverter 2.Reserialize(JsonWriter writer, Object value, JsonSerializer serializer, Action 1 inlineWriter处）
在Nest.SortJsonConverter.WriteJson（JsonWriter编写器，对象值，JsonSerializer序列化器）处
在Elastic.Internal.JsonNet.Serialization.JsonSerializerInternalWriter.SerializeConvertable（JsonWriter作家，JsonConverter转换器，对象值，JsonContract合同，JsonContainerContract collectionContract，JsonProperty containerProperty）
在Elastic.Internal.JsonNet.Serialization.JsonSerializerInternalWriter.SerializeList（JsonWriter作家，IEnumerable值，JsonArrayContract合同，JsonProperty成员，JsonContainerContract collectionContract，JsonProperty containerProperty）
在Elastic.Internal.JsonNet.Serialization.JsonSerializerInternalWriter.SerializeObject（JsonWriter writer，Object value，JsonObjectContract contract，JsonProperty member，JsonContainerContract collectionContract，JsonProperty containerProperty）中
在Elastic.Internal.JsonNet.Serialization.JsonSerializerInternalWriter.Serialize（JsonWriter jsonWriter，对象值，类型objectType）处
在Elastic.Internal.JsonNet.JsonSerializer.SerializeInternal（JsonWriter jsonWriter，对象值，类型objectType）
在Nest.InternalSerializer.Serialize [T]（T数据，流writableStream，SerializationFormatting格式化）
在Elasticsearch.Net.SerializableData 1.Write(Stream writableStream, IConnectionConfigurationValues settings)
at Elasticsearch.Net.HttpWebRequestConnection.Request[TResponse](RequestData requestData)
at Elasticsearch.Net.RequestPipeline.CallElasticsearch[TResponse](RequestData requestData)
at Elasticsearch.Net.Transport 1.Request [TResponse]（HttpMethod方法，字符串路径，PostData数据，IRequestParameters requestParameters）
System.NullReferenceException：对象引用未设置为对象的实例。
在Nest.FieldResolver.Resolve（Field field）
在Nest.SortJsonConverter。<> c__DisplayClass6_1.b__0（JsonWriter w）
在Nest.ReserializeJsonConverter 2.Reserialize(JsonWriter writer, Object value, JsonSerializer serializer, Action 1 inlineWriter处）
在Nest.SortJsonConverter.WriteJson（JsonWriter编写器，对象值，JsonSerializer序列化器）处
在Elastic.Internal.JsonNet.Serialization.JsonSerializerInternalWriter.SerializeConvertable（JsonWriter作家，JsonConverter转换器，对象值，JsonContract合同，JsonContainerContract collectionContract，JsonProperty containerProperty）
在Elastic.Internal.JsonNet.Serialization.JsonSerializerInternalWriter.SerializeList（JsonWriter作家，IEnumerable值，JsonArrayContract合同，JsonProperty成员，JsonContainerContract collectionContract，JsonProperty containerProperty）
在Elastic.Internal.JsonNet.Serialization.JsonSerializerInternalWriter.SerializeObject（JsonWriter writer，Object value，JsonObjectContract contract，JsonProperty member，JsonContainerContract collectionContract，JsonProperty containerProperty）中
在Elastic.Internal.JsonNet.Serialization.JsonSerializerInternalWriter.Serialize（JsonWriter jsonWriter，对象值，类型objectType）处
在Elastic.Internal.JsonNet.JsonSerializer.SerializeInternal（JsonWriter jsonWriter，对象值，类型objectType）
在Nest.InternalSerializer.Serialize [T]（T数据，流writableStream，SerializationFormatting格式化）
在Elasticsearch.Net.SerializableData 1.Write(Stream writableStream, IConnectionConfigurationValues settings)
at Elasticsearch.Net.HttpWebRequestConnection.Request[TResponse](RequestData requestData)
at Elasticsearch.Net.RequestPipeline.CallElasticsearch[TResponse](RequestData requestData)
at Elasticsearch.Net.Transport 1.Request [TResponse]（HttpMethod方法，字符串路径，PostData数据，IRequestParameters requestParameters）
Elasticsearch.Net.UnexpectedElasticsearchClientException：对象引用未设置为对象的实例。 ---> System.NullReferenceException：对象引用未设置为对象的实例。
在Nest.FieldResolver.Resolve（Field field）
在Nest.SortJsonConverter。<> c__DisplayClass6_1.b__0（JsonWriter w）
在Nest.ReserializeJsonConverter 2.Reserialize(JsonWriter writer, Object value, JsonSerializer serializer, Action 1 inlineWriter处）
在Nest.SortJsonConverter.WriteJson（JsonWriter编写器，对象值，JsonSerializer序列化器）处
在Elastic.Internal.JsonNet.Serialization.JsonSerializerInternalWriter.SerializeConvertable（JsonWriter作家，JsonConverter转换器，对象值，JsonContract合同，JsonContainerContract collectionContract，JsonProperty containerProperty）
在Elastic.Internal.JsonNet.Serialization.JsonSerializerInternalWriter.SerializeList（JsonWriter作家，IEnumerable值，JsonArrayContract合同，JsonProperty成员，JsonContainerContract collectionContract，JsonProperty containerProperty）
在Elastic.Internal.JsonNet.Serialization.JsonSerializerInternalWriter.SerializeObject（JsonWriter writer，Object value，JsonObjectContract contract，JsonProperty member，JsonContainerContract collectionContract，JsonProperty containerProperty）中
在Elastic.Internal.JsonNet.Serialization.JsonSerializerInternalWriter.Serialize（JsonWriter jsonWriter，对象值，类型objectType）处
在Elastic.Internal.JsonNet.JsonSerializer.SerializeInternal（JsonWriter jsonWriter，对象值，类型objectType）
在Nest.InternalSerializer.Serialize [T]（T数据，流writableStream，SerializationFormatting格式化）
在Elasticsearch.Net.SerializableData 1.Write(Stream writableStream, IConnectionConfigurationValues settings)
at Elasticsearch.Net.HttpWebRequestConnection.Request[TResponse](RequestData requestData)
at Elasticsearch.Net.RequestPipeline.CallElasticsearch[TResponse](RequestData requestData)
at Elasticsearch.Net.Transport 1.Request [TResponse]（HttpMethod方法，字符串路径，PostData数据，IRequestParameters requestParameters）处
---内部异常堆栈跟踪的结尾-