ILogger< T>的基本类别类型使用依赖注入

本文介绍了ILogger< T>的基本类别类型使用依赖注入的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个基类，可以完成一些工作，包括日志记录.我将ILogger依赖项注入到构造函数中

I have a base class that does some work, including logging. I have an ILogger dependency injected into the constructor

public abstract class BaseClassExample { protected readonly ILogger<BaseClassExample> logger; public class BaseClassExample(ILogger<BaseClassExample> logger) { this.logger = logger; } }

我想让类实现BaseClassExample，并做自己的工作，还包括日志记录.

And I want to have classes implement BaseClassExample, and do their own work too, also including logging.

public class DerivedClass : BaseClassExample { protected readonly ILogger<DerivedClass> logger; public class BaseClassExample(ILogger<DerivedClass> logger) { this.logger = logger; } }

这是正确的做事方式吗?我是否应该获取实现类的类型以记录基类?我应该使用记录器的单独实例(具有DerivedClass的类型)还是尝试使用与基类相同的记录器?

Is this the right way of doing things? Am I supposed to get the implementing class's type for logging for the base class? Should I have a separate instance of a logger (with the DerivedClass's type) or try and use the same one as the base class?

推荐答案

在基类中使用非通用ILogger，但在派生类中使用 ILogger< DerivedClass> .这样，您就可以根据需要简单地将ILogger传递给您的基类:

use a none generic ILogger in your base class, but ILogger<DerivedClass> in your derived class. This way you can simply pass the ILogger to your base class if needed:

public abstract class BaseClassExample { private readonly ILogger logger; public class BaseClassExample(ILogger logger) { this.logger = logger; } }

和

public class DerivedClass : BaseClassExample { private readonly ILogger<DerivedClass> logger; public class BaseClassExample(ILogger<DerivedClass> logger) :base(logger) { this.logger = logger; } }

这样，如果您以某种方式最终得到两个派生类，则不仅可以更轻松地使用它，还可以在两个派生类中使用ILogger.

this way not only you can use it easier if you somehow end up with two derived class you can use ILogger in both of them.