Glass Mapper (4.1.2.67) 无法映射富文本字段

Question

我定义了一些类来映射模板项，如下所示：

public class ContentBase
{
    public virtual Guid Id { get; set; }
    public virtual string Name { get; set; }
    [SitecoreParent]
    public virtual ContentBase Parent { get; set; }
    [SitecoreItem]
    public virtual Item Self { get; set; }
}
[SitecoreType(TemplateId = "{7979766D-DB9C-4E75-9BE3-5B481C6AB6FF}", AutoMap = true)]
public class EventsListing : ContentBase
{
    [SitecoreField(FieldName = "EventsLocation")]
    public virtual SitecoreFolder<Event> Events { get; set; }
}
[SitecoreType(TemplateId = "{CED01C9B-6284-461A-848F-2CDD00CC6DEB}", AutoMap = true)]
public class Event : ContentBase
{
    public virtual string Title { get; set; }
    public virtual string Details { get; set; }
    public virtual string iCalSummary { get; set; }
    public virtual Image ImageLandscape { get; set; }
    public virtual Image ImagePortrait { get; set; }
    public virtual Image ImageSquare { get; set; }
    public virtual string Date { get; set; }
    public virtual DateTime DateStart { get; set; }
    public virtual DateTime DateEnd { get; set; }
    public virtual string Location { get; set; }
    public virtual string GoogleMapsAddress { get; set; }
    public virtual string MemberDiscount { get; set; }
    public virtual Link EventLinkUrl { get; set; }
    public virtual string EventLinkText { get; set; }
}

活动模板

我有一个基于 GlassUserControl 的 EventsListing 子布局，它成功获取了 EventsListing 和子事件的所有字段。然后我在 Date 上有一个链接，可以通过 web.api 控制器为事件生成 iCal

    [RoutePrefix("hbf/api/ical")]
public class EventICalController : ApiController
{
    [Route("{id:guid}")]
    [HttpGet]
    public HttpResponseMessage Get(Guid id)
    {
        var scc = new SitecoreContext(); 
        var item = scc.GetItem<Item>(id);
        var myEvent = scc.GetItem<Models.Event>(id);

该项目看起来不错，我可以访问这些字段；但是调用 scc.GetItem(id) 会在“详细信息”字段中引发异常。

异常嵌套是（下面的完整堆栈跟踪）： Glass.Mapper.MapperException“未能创建类型 Models.Event” Glass.Mapper.MapperException “无法在 /sitecore/content/... 上映射属性” Glass.Mapper.MapperException“无法在 Models.Event 上映射属性详细信息” System.NullReferenceException

如果我注释掉“详细信息”属性，它会起作用。

我尝试了各种方法来获取 SitecoreContext，即使指定语言也无济于事。我还尝试使用名称和/或 ID 以及字段类型设置 SitecoreField 属性。

我可以在配置（或其他方面）方面如何解决这个问题？

---

{
  "Message": "An error has occurred.",
  "ExceptionMessage": "Failed to create type xxx.Web.Models.Event",
  "ExceptionType": "Glass.Mapper.MapperException",
  "StackTrace": "   at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CreateConcrete.CreateConcreteTask.CreateObject(ObjectConstructionArgs args) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\Pipelines\\ObjectConstruction\\Tasks\\CreateConcrete\\CreateConcreteTask.cs:line 115
       at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CreateConcrete.CreateConcreteTask.Execute(ObjectConstructionArgs args) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\Pipelines\\ObjectConstruction\\Tasks\\CreateConcrete\\CreateConcreteTask.cs:line 68
       at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\Pipelines\\AbstractPipelineRunner.cs:line 77
       at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\Pipelines\\AbstractPipelineRunner.cs:line 82
       at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\Pipelines\\AbstractPipelineRunner.cs:line 82
       at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\Pipelines\\AbstractPipelineRunner.cs:line 82
       at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\Pipelines\\AbstractPipelineRunner.cs:line 82
       at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\Pipelines\\AbstractPipelineRunner.cs:line 82
       at Glass.Mapper.AbstractService.InstantiateObject(AbstractTypeCreationContext abstractTypeCreationContext) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\AbstractService.cs:line 138
       at Glass.Mapper.Sc.SitecoreService.CreateType(Type type, Item item, Boolean isLazy, Boolean inferType, Dictionary`2 parameters, Object[] constructorParameters) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper.Sc\\SitecoreService.cs:line 498
       at Glass.Mapper.Sc.SitecoreService.GetItem[T](Guid id, Boolean isLazy, Boolean inferType) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper.Sc\\SitecoreService.cs:line 899
       at xxx.Web.Services.xxx.EventICalController.Get(Guid id) in d:\\Dev\\LW\\xxx.Web\\Services\\xxx\\EventICalController.cs:line 57
       at lambda_method(Closure , Object , Object[] )
       at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.<>c__DisplayClass10.<GetExecutor>b__9(Object instance, Object[] methodParameters)
       at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync(HttpControllerContext controllerContext, IDictionary`2 arguments, CancellationToken cancellationToken)
        --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at System.Web.Http.Controllers.ApiControllerActionInvoker.<InvokeActionAsyncCore>d__0.MoveNext()
        --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at System.Web.Http.Controllers.ActionFilterResult.<ExecuteAsync>d__2.MoveNext()
        --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at System.Web.Http.Dispatcher.HttpControllerDispatcher.<SendAsync>d__1.MoveNext()",
  "InnerException": {
    "Message": "An error has occurred.",
    "ExceptionMessage": "Failed to map properties on /sitecore/content/xxx/Home/Living well/Events/datasources/Health and fitness events/xxx Fitness.",
    "ExceptionType": "Glass.Mapper.MapperException",
    "StackTrace": "   at Glass.Mapper.Configuration.AbstractTypeConfiguration.MapPropertiesToObject(Object obj, IAbstractService service, AbstractTypeCreationContext context) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\Configuration\\AbstractTypeConfiguration.cs:line 174
           at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CreateConcrete.CreateConcreteTask.CreateObject(ObjectConstructionArgs args) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\Pipelines\\ObjectConstruction\\Tasks\\CreateConcrete\\CreateConcreteTask.cs:line 104",
    "InnerException": {
      "Message": "An error has occurred.",
      "ExceptionMessage": "Failed to map property Details on xxx.Web.Models.Event",
      "ExceptionType": "Glass.Mapper.MapperException",
      "StackTrace": "   at Glass.Mapper.Configuration.AbstractTypeConfiguration.<>c__DisplayClassb.<CreatePropertyExpression>b__a(Object obj, AbstractDataMappingContext context) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\Configuration\\AbstractTypeConfiguration.cs:line 123
           at Glass.Mapper.Configuration.AbstractTypeConfiguration.MapPropertiesToObject(Object obj, IAbstractService service, AbstractTypeCreationContext context) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\Configuration\\AbstractTypeConfiguration.cs:line 144",
      "InnerException": {
        "Message": "An error has occurred.",
        "ExceptionMessage": "Failed to map to property 'Details' on type 'xxx.Web.Models.Event'",
        "ExceptionType": "Glass.Mapper.MapperException",
        "StackTrace": "   at Glass.Mapper.AbstractDataMapper.MapCmsToProperty(AbstractDataMappingContext mappingContext) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\AbstractDataMapper.cs:line 64
               at Glass.Mapper.Configuration.AbstractTypeConfiguration.<>c__DisplayClassb.<CreatePropertyExpression>b__a(Object obj, AbstractDataMappingContext context) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\Configuration\\AbstractTypeConfiguration.cs:line 119",
        "InnerException": {
          "Message": "An error has occurred.",
          "ExceptionMessage": "Object reference not set to an instance of an object.",
          "ExceptionType": "System.NullReferenceException",
          "StackTrace": "   at xxx.Core.Pipelines.RenderField.GetDevModeContent.Process(RenderFieldArgs args)
               at (Object , Object[] )
               at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
               at Glass.Mapper.Sc.DataMappers.SitecoreFieldStringMapper.RunPipeline(Field field) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper.Sc\\DataMappers\\SitecoreFieldStringMapper.cs:line 99
               at Glass.Mapper.AbstractDataMapper.MapCmsToProperty(AbstractDataMappingContext mappingContext) in c:\\TeamCity\\buildAgent\\work\\8567e2ba106d3992\\Source\\Glass.Mapper\\AbstractDataMapper.cs:line 60"
        }
      }
    }
  }
}

Answer 1

我将 Glass.Mapper.Sc.* 项目源添加到我的解决方案中（对开源表示欢迎）并逐步检查并发现我需要添加一些额外的富文本字段的配置，如下：

[SitecoreField(Setting = SitecoreFieldSettings.RichTextRaw)]
public virtual string Details { get; set; }

这种方式字段不经过渲染过程，只返回原始 HTML，这正是我想要的。是渲染过程失败了，这是一个半答案，因为我不知道渲染过程为什么失败，但我不需要它。不幸的是，我没有在 Glass.Mapper 文档中找到我需要的内容。

Answer 2

我认为 Glass 无法解析 Context.Site。由于 web api 调用默认情况下没有上下文站点。您可以将整个调用封装在 using (new SiteContextSwitcher(Factory.GetSite("yoursite"))) 中，或者找到另一种方法在服务调用中设置 Context.Site。

或者，如果您有多个站点，请确保它们在您的 <sites> 节点中定义了 hostName 属性，并且在调用顶部有类似这样的内容：

var sites = Sitecore.Configuration.Factory.GetSiteInfoList();
string currentHost = HttpContext.Current.Request.Url.Host;
var currentSite = sites.FirstOrDefault(obj => obj.HostName.Equals(currentHost, StringComparison.InvariantCultureIgnoreCase));
if (currentSite != null)
   {
       var newSite = new Sitecore.Sites.SiteContext(currentSite);
       if (newSite != null)
       {                 
           using (new SiteContextSwitcher(newSite))
           {

                ///Code here
           }
       {
    {