Unity无法通过xml配置加载泛型类型定义 [英] Unity fails to load generic type definition via xml configuration

问题描述

我遇到了通过XML配置配置Unity 3.0的一些问题。解析泛型将给我下面的异常消息：

I'm running into some problems configuring Unity 3.0 via XML configuration. Resolving the generic type will give me the following exception message:

类型INLog`1没有可访问的构造函数。

The type INLog`1 does not have an accessible constructor.

以下是我的日志记录类的布局：

Here's the layout for my logging classes:

namespace Common.Utils.Logging {
    public interface INLog
    {
    }

    public interface INLog<T> : INLog where T : class
    {
    }

    public class NLog : INLog
    {
        public NLog(Type type)
        {
        }
    }

    public class NLog<T> : NLog, INLog<T>
        where T : class
    {
        public NLog()
            : base(typeof(T))
        {
        }
    }
}

我用这个XML代码注册泛型类型：

I register the generic type with this XML code:

<type type="Common.Utils.Logging.INLog[], Common.Utils" mapTo="Common.Utils.Logging.NLog[], Common.Utils" />

加载这个配置会给我下面的容器注册信息：

Loading this configuration gives me the following container registration:

LifetimeManager: {Microsoft.Practices.Unity.TransientLifetimeManager}
LifetimeManagerType: {Name = "TransientLifetimeManager" FullName = "Microsoft.Practices.Unity.TransientLifetimeManager"}
MappedToType: {Name = "NLog[]" FullName = "Common.Utils.Logging.NLog[]"}
Name: null
RegisteredType: {Name = "INLog[]" FullName = "Common.Utils.Logging.INLog[]"}

而不是我期望的注册，即：

Instead of the registration I'm expecting, namely:

LifetimeManager: null
LifetimeManagerType: {Name = "TransientLifetimeManager" FullName = "Microsoft.Practices.Unity.TransientLifetimeManager"}
MappedToType: {Name = "NLog`1" FullName = "Common.Utils.Logging.NLog`1"}
Name: null
RegisteredType: {Name = "INLog`1" FullName = "Common.Utils.Logging.INLog`1"}

在代码中注册工作得很好，并给出预期的注册：

Registering in code works just fine and gives the expected registration:

using (IUnityContainer container = new UnityContainer())
{
    container.RegisterType(typeof(INLog<>), typeof(NLog<>));
}

但我无法通过配置文件正确加载它。
我想这与非泛型类型（I）NLog的继承...

But I can't manage to get it loaded correctly via the configuration file. I guess this has to to with the inheritance of the non-generic types (I)NLog...

有没有人知道如何修复这是什么？

Does anyone of you guys know how to fix this?

最好的问候，
里克

Best regards, Rick

推荐答案

试试这个，而不是 [] 记法

Try this instead of the [] notation

<type type="Common.Utils.Logging.INLog`1, Common.Utils" mapTo="Common.Utils.Logging.NLog`1, Common.Utils" />

感觉尴尬，我知道，但它应该可以工作。

Feels awkward, I know, but it should work.

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