c# - 使用 Unity 容器解析 NLog 实例

Question

我有以下类(class):

public class TestInjection
{
    private ILogger logger;
    public TestInjection(ILogger logger)
    {
        this.logger = logger;
    }

    public void Process()
    {
        try
        {
            int zero = 0;
            int result = 5 / zero;
        }
        catch (DivideByZeroException ex)
        {
            logger.Log(LogLevel.Error, "test message", ex);
            Console.WriteLine("logged message from class");
        }
    }
}

在我的 Program.cs 中，我有代码:

IUnityContainer container = new UnityContainer();
container.RegisterType<TestInjection>();

var myTestClass = container.Resolve<TestInjection>(new ResolverOverride[] { new ParameterOverride("logger", LogManager.GetCurrentClassLogger()) });
myTestClass.Process();

如果 Logger 类的默认构造函数不可访问，如何使用 Unity 容器解析 LogManager.GetCurrentClassLogger() ？

PS:这是我第一次接触 DI 和 Unity。

Answer 1

这是我的做法:

IUnityContainer container = new UnityContainer();
container.RegisterType<ILogger>(
    new InjectionFactory(l => LogManager.GetCurrentClassLogger()));
container.RegisterType<TestInjection>();

var myTestClass = container.Resolve<TestInjection>(
    new ResolverOverride[]
    {
        new ParameterOverride("logger", container.Resolve<ILogger>())
    });
myTestClass.Process();