更新到最新的RavenDB后，我收到此错误：
[InvalidCastException：无法转换类型为“Index_Auto_2fDocuments_2fByCreationDateTimeAndPublishTimeSortByCreationDateTimePublishTime”的对象以键入“Raven.Database.Linq.AbstractViewGenerator”。] C：\ Builds \ RavenDB-Stable \ Raven.Database \ Linq \ DynamicViewCompiler.cs中的Raven.Database.Linq.DynamicViewCompiler.GenerateInstance（）：598 C：\ Builds \ RavenDB-Stable \ Raven.Database \ Storage \ IndexDefinitionStorage.cs中的Raven.Database.Storage.IndexDefinitionStorage.AddAndCompileIndex（IndexDefinition indexDefinition）：233 C：\ Builds \ RavenDB-Stable \ Raven.Database \ DocumentDatabase.cs中的Raven.Database.DocumentDatabase.PutIndex（String name，IndexDefinition definition）：1207 Raven.Database.Queries.DynamicQueryRunner.CreateAutoIndex（String permanentIndexName，Func
1 createDefinition) in c:\Builds\RavenDB-Stable\Raven.Database\Queries\DynamicQueryRunner.cs:170 Raven.Database.Queries.DynamicQueryRunner.GetAppropriateIndexToQuery(String entityName, IndexQuery query, DynamicQueryMapping map) in c:\Builds\RavenDB-Stable\Raven.Database\Queries\DynamicQueryRunner.cs:158 Raven.Database.Queries.DynamicQueryRunner.ExecuteDynamicQuery(String entityName, IndexQuery query) in c:\Builds\RavenDB-Stable\Raven.Database\Queries\DynamicQueryRunner.cs:32 Raven.Client.Embedded.EmbeddedDatabaseCommands.Query(String index, IndexQuery query, String[] includes, Boolean metadataOnly, Boolean indexEntriesOnly) in c:\Builds\RavenDB-Stable\Raven.Client.Embedded\EmbeddedDatabaseCommands.cs:481 Raven.Client.Document.AbstractDocumentQuery2.ExecuteActualQuery（）in c：\ Builds \ RavenDB-Stable \ Raven.Client.Lightweight \ Document \ AbstractDocumentQuery.cs：664 Raven.Client.Document.AbstractDocumentQuery2.get_QueryResult() in c:\Builds\RavenDB-Stable\Raven.Client.Lightweight\Document\AbstractDocumentQuery.cs:633 Raven.Client.Linq.RavenQueryProviderProcessor1.ExecuteQuery（）在c：\ Builds \ RavenDB-Stable \ Raven.Client.Lightweight \ Linq \ RavenQueryProviderProcessor.cs：1499 Raven.Client.Linq.RavenQueryInspector1.GetEnumerator() in c:\Builds\RavenDB-Stable\Raven.Client.Lightweight\Linq\RavenQueryInspector.cs:105 System.Collections.Generic.List1..ctor（IEnumerable1 collection) +446 System.Linq.Enumerable.ToList(IEnumerable1 source）+80 C：\ Dev \ Repos \ Git \ Writer \ Kernel \ DocumentRavenProvider.cs中的Kernel.DocumentRavenProvider.GetDocuments（Int32计数）：85 C：\ Dev \ Repos \ Git \ Writer \ Kernel \ DocumentManager.cs中的Kernel.DocumentManager.GetDocuments（Int32计数）：46 C：\ Dev \ Repos \ Git \ Writer \ Blog \ Controllers \ DocumentController.cs中的Blog.Controllers.DocumentController.Index（）：18 lambda_method（Closure，ControllerBase，Object []）+79 System.Web.Mvc.ReflectedActionDescriptor.Execute（ControllerContext controllerContext，IDictionary2 parameters) +261 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary2个参数）+39 System.Web.Mvc.Async。＆lt;＆gt; c_ DisplayClass42.b _41（）+34 System.Web.Mvc.Async。＆lt;＆gt; c_ DisplayClass39.b _33（）+124 System.Web.Mvc.Async。＆lt;＆gt; c_ DisplayClass4f.b _49（）+838923 System.Web.Mvc.Async。＆lt;＆gt; c_ DisplayClass37.b _36（IAsyncResult asyncResult）+15 System.Web.Mvc.Async。＆lt;＆gt; c_ DisplayClass2a.b _20（）+33 System.Web.Mvc.Async。＆lt;＆gt; c_ DisplayClass25.b _22（IAsyncResult asyncResult）+839508 System.Web.Mvc。＆lt;＆gt; c_ DisplayClass1d.b _18（IAsyncResult asyncResult）+28 System.Web.Mvc.Async。＆lt;＆gt; c_ DisplayClass4.b _3（IAsyncResult ar）+15 System.Web.Mvc.Controller.EndExecuteCore（IAsyncResult asyncResult）+65 System.Web.Mvc.Async。＆lt;＆gt; c_ DisplayClass4.b _3（IAsyncResult ar）+15 System.Web.Mvc.Controller.EndExecute（IAsyncResult asyncResult）+51 System.Web.Mvc。＆lt;＆gt; c_ DisplayClass8.b _3（IAsyncResult asyncResult）+42 System.Web.Mvc.Async。＆lt;＆gt; c_ DisplayClass4.b _3（IAsyncResult ar）+15 System.Web.Mvc.MvcHandler.EndProcessRequest（IAsyncResult asyncResult）+51 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute（）+606 System.Web.HttpApplication.ExecuteStep（IExecutionStep step，Boolean＆amp; completedSynchronously）+288
执行此查询时
documents = session.Query<Model.Document>().Where(d => d.PublishTime <= DateTime.Now)
.OrderByDescending(document=>document.CreationDateTime).Take(count)
我正在运行嵌入式数据库，我试图
在更新之前，一切正常。我有很多单元测试，我测试了一个内存Raven数据库。这里保存和检索工作正常，所以它可能与正在解析的json有关吗？
我有这个控制器调用底层的RavenDB保存逻辑：
// POST api/document
public async System.Threading.Tasks.Task<Model.Document> Post([FromBody]Model.Document document)
{
var savedDocument = await _documentManager.Save(document);
var hubConnection = new Microsoft.AspNet.SignalR.Client.Hubs.HubConnection(BaseSiteUrl);
var hub = hubConnection.CreateHubProxy("DocumentHub");
hubConnection.Start().Wait();
hub.Invoke("NewArticle", savedDocument.Id).Wait();
return document;
}
我的模型看起来像这样
public class Document
{
public int Id { get; set; }
public string Headline { get; set; }
public string Text { get; set; }
public DateTime CreationDateTime { get; set; }
public DateTime PublishTime { get; set; }
public HashSet<string> Tags { get; private set; }
public int CategoryId { get; set; }
[Raven.Imports.Newtonsoft.Json.JsonIgnore]
public Model.Category Category { get; private set; }
public Document()
{
CreationDateTime = DateTime.Now;
Tags = new HashSet<string>();
}
public Document(string headline, string text, DateTime creationTime, DateTime publishTime)
{
Headline = headline;
Text = text;
CreationDateTime = creationTime;
PublishTime = publishTime;
Tags = new HashSet<string>();
}
public string GetCategoryName()
{
string name = String.Empty;
if (this.Category != null)
{
name = this.Category.Name;
}
return name;
}
public void SetCategory(Model.Category category)
{
if (category != null)
{
this.Category = category;
this.CategoryId = category.Id;
}
}
public string GetTeaser()
{
string teaser = Text;
if (Text.Count() > 250)
teaser = Text.Substring(0, 250) + " ...";
return teaser;
}
public string GetCommaSeperatedTagsString()
{
var tags = new StringBuilder();
int i = 0;
foreach (string tag in Tags)
{
if (!String.IsNullOrEmpty(tag))
{
tags.Append(tag);
if (i < Tags.Count - 1)
{
tags.Append(",");
}
}
i++;
}
return tags.ToString();
}
public string GetSpaceSeperatedTagsString()
{
var tags = new StringBuilder();
int i = 0;
foreach (string tag in Tags)
{
if (!String.IsNullOrEmpty(tag))
{
tags.Append(tag);
if (i < Tags.Count - 1)
{
tags.Append(" ");
}
}
i++;
}
return tags.ToString();
}
public void AddTagsString(string tagsString)
{
string[] tagsSplitted = tagsString.Split(',');
foreach (var tag in tagsSplitted)
{
if (!String.IsNullOrEmpty(tag))
{
Tags.Add(tag);
}
}
}
public string GetTimeString()
{
System.TimeSpan span = DateTime.Now.Subtract(this.CreationDateTime);
string time = "lige udgivet";
if (span.Days > 0)
{
if (span.Days > 1)
time = span.Days + " dage siden";
else
time = "en dag siden";
}
else if (span.Hours > 0)
{
if (span.Hours > 1)
time = span.Hours + " timer siden";
else
time = "en time siden";
}
else if (span.Minutes > 0)
{
if (span.Minutes > 1)
time = span.Minutes + " minutter siden.";
else
time = "et minut siden.";
}
else if (span.Seconds > 0)
{
time = "lige udgivet";
}
else if (span.Milliseconds > 0)
{
time = "lige udgivet";
}
return time;
}
}
public class Category
{
public string Name { get; set; }
public int Id { get; set; }
}
但是，如果我打破上面的控制器方法，json转换得很好。这里没有错误。
RavenDB是否改变了DateTime的处理方式？有没有人知道一个解决方案，或者一篇能指出我正确方向的文章。
更新 我可以看到这只发生在我尝试查询数据库并获取文档时。这是在空数据库和带有文档的数据库上测试的。我可以看到save方法工作正常。
答案 0 :(得分：2)
通过从nuget卸载Raven.Embedded并重新安装来解决此问题。