3
我有一個AutoMapper問題，現在已經讓我瘋狂得太久了。 AutoMapper用戶網站也發佈了類似的問題，但沒有得到太多的關注。AutoMapper不適用於Container類
總結是，我有一個包含組件字典的容器類。這些組件是一個公共基類的派生對象。我也有一個平行結構，我正在使用DTO對象來映射它。
生成的錯誤似乎表明映射器無法在我包含在CreateMap調用中的兩個類之間進行映射。我認爲這個錯誤與我有一個不屬於容器層次結構的對象字典有關。
對於下面的代碼長度，我提前表示歉意。我的簡單測試案例工作。不用說，這只是更復雜的失敗案例。
這裏是類：
#region Dto objects
public class ComponentContainerDTO
{
public Dictionary<string, ComponentDTO> Components { get; set; }
public ComponentContainerDTO()
{
this.Components = new Dictionary<string, ComponentDTO>();
}
}
public class EntityDTO : ComponentContainerDTO
{
public int Id { get; set; }
}
public class ComponentDTO
{
public EntityDTO Owner { get; set; }
public int Id { get; set; }
public string Name { get; set; }
public string ComponentType { get; set; }
}
public class HealthDTO : ComponentDTO
{
public decimal CurrentHealth { get; set; }
}
public class PhysicalLocationDTO : ComponentDTO
{
public Point2D Location { get; set; }
}
#endregion
#region Domain objects
public class ComponentContainer
{
public Dictionary<string, Component> Components { get; set; }
public ComponentContainer()
{
this.Components = new Dictionary<string, Component>();
}
}
public class Entity : ComponentContainer
{
public int Id { get; set; }
}
public class Component
{
public Entity Owner { get; set; }
public int Id { get; set; }
public string Name { get; set; }
public string ComponentType { get; set; }
}
public class Health : Component
{
public decimal CurrentHealth { get; set; }
}
public struct Point2D
{
public decimal X;
public decimal Y;
public Point2D(decimal x, decimal y)
{
X = x;
Y = y;
}
}
public class PhysicalLocation : Component
{
public Point2D Location { get; set; }
}
#endregion
代碼：
var entity = new Entity() { Id = 1 };
var healthComponent = new Health() { CurrentHealth = 100, Owner = entity, Name = "Health", Id = 2 };
entity.Components.Add("1", healthComponent);
var locationComponent = new PhysicalLocation() { Location = new Point2D() { X = 1, Y = 2 }, Owner = entity, Name = "PhysicalLocation", Id = 3 };
entity.Components.Add("2", locationComponent);
Mapper.CreateMap<ComponentContainer, ComponentContainerDTO>()
.Include<Entity, EntityDTO>();
Mapper.CreateMap<Entity, EntityDTO>();
Mapper.CreateMap<Component, ComponentDTO>()
.Include<Health, HealthDTO>()
.Include<PhysicalLocation, PhysicalLocationDTO>();
Mapper.CreateMap<Component, ComponentDTO>();
Mapper.CreateMap<Health, HealthDTO>();
Mapper.CreateMap<PhysicalLocation, PhysicalLocationDTO>();
Mapper.AssertConfigurationIsValid();
var targetEntity = Mapper.Map<Entity, EntityDTO>(entity);
的錯誤，當我調用地圖（）（簡稱堆爬）：
AutoMapper.AutoMapperMappingException was unhandled
Message=Trying to map MapperTest1.Entity to MapperTest1.EntityDTO.
Using mapping configuration for MapperTest1.Entity to MapperTest1.EntityDTO
Exception of type 'AutoMapper.AutoMapperMappingException' was thrown.
Source=AutoMapper
StackTrace:
at AutoMapper.MappingEngine.AutoMapper.IMappingEngineRunner.Map(ResolutionContext context)
.
.
.
InnerException: AutoMapper.AutoMapperMappingException
Message=Trying to map System.Collections.Generic.Dictionary`2[[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[MapperTest1.Component, ElasticTest1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]] to System.Collections.Generic.Dictionary`2[[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[MapperTest1.ComponentDTO, ElasticTest1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].
Using mapping configuration for MapperTest1.Entity to MapperTest1.EntityDTO
Destination property: Components
Exception of type 'AutoMapper.AutoMapperMappingException' was thrown.
Source=AutoMapper
StackTrace:
at AutoMapper.Mappers.TypeMapObjectMapperRegistry.PropertyMapMappingStrategy.MapPropertyValue(ResolutionContext context, IMappingEngineRunner mapper, Object mappedObject, PropertyMap propertyMap)
.
.
InnerException: AutoMapper.AutoMapperMappingException
Message=Trying to map System.Collections.Generic.Dictionary`2[[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[MapperTest1.Component, ElasticTest1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]] to System.Collections.Generic.Dictionary`2[[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[MapperTest1.ComponentDTO, ElasticTest1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].
Using mapping configuration for MapperTest1.Entity to MapperTest1.EntityDTO
Destination property: Components
Exception of type 'AutoMapper.AutoMapperMappingException' was thrown.
Source=AutoMapper
StackTrace:
at AutoMapper.MappingEngine.AutoMapper.IMappingEngineRunner.Map(ResolutionContext context)
.
InnerException: AutoMapper.AutoMapperMappingException
Message=Trying to map MapperTest1.Component to MapperTest1.ComponentDTO.
Using mapping configuration for MapperTest1.Health to MapperTest1.HealthDTO
Destination property: Components
Exception of type 'AutoMapper.AutoMapperMappingException' was thrown.
Source=AutoMapper
StackTrace:
at AutoMapper.MappingEngine.AutoMapper.IMappingEngineRunner.Map(ResolutionContext context)
.
.
InnerException: AutoMapper.AutoMapperMappingException
Message=Trying to map System.Decimal to System.Decimal.
Using mapping configuration for MapperTest1.Health to MapperTest1.HealthDTO
Destination property: CurrentHealth
Exception of type 'AutoMapper.AutoMapperMappingException' was thrown.
Source=AutoMapper
StackTrace:
at AutoMapper.Mappers.TypeMapObjectMapperRegistry.PropertyMapMappingStrategy.MapPropertyValue(ResolutionContext context, IMappingEngineRunner mapper, Object mappedObject, PropertyMap propertyMap)
.
.
InnerException: System.InvalidCastException
Message=Unable to cast object of type 'MapperTest1.ComponentDTO' to type 'MapperTest1.HealthDTO'.
Source=Anonymously Hosted DynamicMethods Assembly
StackTrace:
at SetCurrentHealth(Object , Object)
.
.
謝謝你提前。
裏克