如何使用 Castle Windsor 将对象注入到 WCF IErrorHandler 实现中？

发布于 2024-08-08 16:54:42 字数 1296 浏览 5 评论 0原文

我正在使用 WCF 开发一组服务。该应用程序正在与温莎城堡进行依赖注入。我添加了一个 IErrorHandler 实现，该实现通过属性添加到服务中。到目前为止一切正常。正在正确应用并调用 IErrorHandler 对象（属于名为 FaultHandler 的类）。

现在我正在添加日志记录。Castle Windsor 设置为注入记录器对象（一个实例） IOurLogger）。但是当我尝试将其添加到 FaultHandler 时，我的记录器为 null。

FaultHandler 的代码看起来像这样。 this：

class FaultHandler : IErrorHandler
{
    public IOurLogger logger { get; set; }

    public bool HandleError(Exception error)
    {
        logger.Write("Exception type {0}. Message: {1}", error.GetType(), error.Message);

        // Let WCF handle things its way. We only want to log.
        return false;
    }

    public void ProvideFault(Exception error, MessageVersion version, Message fault)
    {
    }
}

这会引发它自己的异常，因为当调用 HandleError() 时，logger 为 null

记录器已成功注入服务本身并且可以在那里使用。由于某种原因我无法在 FaultHandler 中使用它

更新：这是 Windsor 配置文件的相关部分（经过编辑以保护无辜者）：

<configuration>
  <components>
    <component id="Logger"
               service="Our.Namespace.IOurLogger, Our.Namespace"
               type="Our.Namespace.OurLogger, Our.Namespace"
    />
  </components>
</configuration>

原文

I'm developing a set of services using WCF. The application is doing dependency injection with Castle Windsor. I've added an IErrorHandler implementation that is added to services via an attribute. Everything is working thus far. The IErrorHandler object (of a class called FaultHandler is being applied properly and invoked.

Now I'm adding logging. Castle Windsor is set up to inject the logger object (an instance of IOurLogger). This is working. But when I try to add it to FaultHandler my logger is null.

The code for FaultHandler looks something like this:

class FaultHandler : IErrorHandler
{
    public IOurLogger logger { get; set; }

    public bool HandleError(Exception error)
    {
        logger.Write("Exception type {0}. Message: {1}", error.GetType(), error.Message);

        // Let WCF handle things its way. We only want to log.
        return false;
    }

    public void ProvideFault(Exception error, MessageVersion version, Message fault)
    {
    }
}

This throws it's own exception, since logger is null when HandleError() is called.

The logger is being successfully injected into the service itself and is usable there, but for some reason I can't use it in FaultHandler.

Update: Here is the relevant part of the Windsor configuration file (edited to protect the innocent):

<configuration>
  <components>
    <component id="Logger"
               service="Our.Namespace.IOurLogger, Our.Namespace"
               type="Our.Namespace.OurLogger, Our.Namespace"
    />
  </components>
</configuration>

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