这个 Azure 搜索索引错误是什么意思？ "The property 'x' does not exist on type 'search.documentFields'..."

Question

我得到的异常是：The property 'documentType' does not exist on type 'search.documentFields'. Make sure to only use property names that are defined by the type.

我用谷歌搜索了这个，但仍然无法弄清楚发生了什么。

这是我们使用的模型：

[SerializePropertyNamesAsCamelCase]
public class WebSearchDocument : SearchDocument, IEventSearchDocument, IResourceSearchDocument
{
    [IsFacetable]
    public string DocumentType { get; set; }
    [IsSearchable]
    public string Title { get; set; }
    [IsSearchable]
    public string Description { get; set; }
    [IsFilterable]
    public DateTime? PublishedDate { get; set; }
    public DateTime? LastUpdatedDate { get; set; }
    public string ImageUrl { get; set; }
    public string LinkToResource { get; set; }
    public string EventCode { get; set; }
    [IsSearchable, IsFilterable]
    public string Location { get; set; }
    [IsFilterable]
    public DateTime? EventStartDate { get; set; }
    [IsFilterable]
    public DateTime? EventEndDate { get; set; }
}

最后，这是 Azure 上的索引字段

根据@Bruce Johnson 的要求，这里有更多信息

服务名称：bacp-search
有问题的索引 bacp-web-dev
我们正在使用 Microsoft.Azure.Search 3.0.3 (NuGet)

搜索文档库:

[SerializePropertyNamesAsCamelCase]
public abstract class SearchDocument : ISearchDocument
{
    /// <summary>
    /// Gets or sets the ID for the document. For consistency, this should never be updated or retrieved manually.
    /// All IDs should be set through the <see cref="Id"/> property.
    /// </summary>
    [Key]
    [JsonProperty("Id")]
    public string AzureId { get; set; }

    /// <summary>
    /// Gets or sets any unique IDs or compound IDs that might contain characters unsafe for transmission via URL.
    /// For consistency, all IDs should be set through this property.
    /// </summary>
    [JsonIgnore]
    [IsRetrievable(false)]
    public string Id
    {
        get
        {
            return AzureId.FromBase64EncodedString();
        }
        set
        {
            AzureId = value.ToBase64EncodedString();
        }
    }
}

Answer 1

一般来说，此错误表示索引有效负载中的 属性 不存在于索引定义中。在这个特定的实例中，这是因为索引请求被发送到错误的索引，而目标索引实际上没有 documentType 字段。