我正在嘗試使用反射添加自動映射模型，我創建了一個介面IMapFrom<>并在所有 dto 中實作了它。然后我創建了類
public class MappingProfile : Profile
{
public MappingProfile(Assembly assembly)
=> ApplyMappingsFromAssembly(assembly);
private void ApplyMappingsFromAssembly(Assembly assembly)
{
var types = assembly
.GetExportedTypes()
.Where(t => t
.GetInterfaces()
.Any(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IMapFrom<>)))
.ToList();
foreach (var type in types)
{
var instance = Activator.CreateInstance(type);
const string mappingMethodName = "Mapping";
var methodInfo = type.GetMethod(mappingMethodName)
?? type.GetInterface("IMapFrom`1")?.GetMethod(mappingMethodName);
methodInfo?.Invoke(instance, new object[] { this });
}
}
}
并將其添加到服務集合中
public static IServiceCollection AddAutoMapperProfile(IServiceCollection services, Assembly assembly)
=> services
.AddAutoMapper(
(_, config) => config
.AddProfile(new MappingProfile(Assembly.GetCallingAssembly())),
Array.Empty<Assembly>());
為什么沒有創建類實體？因此，我無法將模型轉換為 dto
uj5u.com熱心網友回復：
試試這樣：
定義 IMapFrom：
public interface IMapFrom<T>
{
void Mapping(Profile profile) => profile.CreateMap(typeof(T), GetType());
}
然后添加映射組態檔：
public class MappingProfile : Profile
{
public MappingProfile()
{
ApplyMappingsFromAssembly(Assembly.GetExecutingAssembly());
}
private void ApplyMappingsFromAssembly(Assembly assembly)
{
var types = assembly.GetExportedTypes()
.Where(t => t.GetInterfaces().Any(i =>
i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IMapFrom<>)))
.ToList();
foreach (var type in types)
{
var instance = Activator.CreateInstance(type);
var methodInfo = type.GetMethod("Mapping")
?? type.GetInterface("IMapFrom`1")?.GetMethod("Mapping");
methodInfo?.Invoke(instance, new object[] { this });
}
}
}
創建 DI 方法：
public static IServiceCollection AddAutoMapperProfile(this IServiceCollection services)
{
var assembly = Assembly.GetExecutingAssembly();
services.AddAutoMapper(assembly);
return services;
}
最后呼叫您創建的 DI 方法：
...
services.AddAutoMapperProfile();
...
轉載請註明出處，本文鏈接：https://www.uj5u.com/houduan/470989.html