我可以看到 Castle 吃异常的唯一原因是会话是否作为属性注入,这使得 Castle 认为它是可选的。
这是我修复它的方法......我创建了一个激活器,当它无法设置属性的值时会引发异常:
public class StrictComponentActivator : DefaultComponentActivator
{
public StrictComponentActivator(ComponentModel model, IKernelInternal kernel,
ComponentInstanceDelegate onCreation,
ComponentInstanceDelegate onDestruction)
: base(model, kernel, onCreation, onDestruction) { }
protected override void SetUpProperties(object instance, CreationContext context)
{
instance = ProxyUtil.GetUnproxiedInstance(instance);
var resolver = Kernel.Resolver;
foreach(var property in Model.Properties)
{
var value = ObtainPropertyValue(context, property, resolver);
if(value != null)
{
var setMethod = property.Property.GetSetMethod();
try
{
setMethod.Invoke(instance, new[] { value });
}
catch(Exception ex)
{
throw new ComponentActivatorException(
string.Format(
"Error setting property {1}.{0} " +
"in component {2}. " +
"See inner exception for more information. " +
"If you don't want Windsor to set this property " +
"you can do it by either decorating it with " +
"DoNotWireAttribute or via registration API.",
property.Property.Name,
instance.GetType().Name,
Model.Name),
ex, Model);
}
}
}
}
private object ObtainPropertyValue(CreationContext context, PropertySet property, IDependencyResolver resolver)
{
if(property.Dependency.IsOptional == false ||
resolver.CanResolve(context, context.Handler, Model, property.Dependency))
{
try
{
return resolver.Resolve(context, context.Handler, Model, property.Dependency);
}
catch(Exception e)
{
if(property.Dependency.IsOptional == false)
{
throw;
}
Kernel.Logger.Warn(
string.Format("Exception when resolving optional dependency {0} on component {1}.",
property.Dependency, Model.Name), e);
}
}
return null;
}
}
然后我配置了我的大部分组件.Activator<StrictComponentActivator>()