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autofac是比較簡單易用的IOC容器。下面我們展示如何通過json配置文件，來進行控制反轉。

需要用到以下程序集。可以通過nugget分別安裝

Microsoft.Extensions.Configuration.dll

Microsoft.Extensions.Configuration.Json

?Autofac.Configuration.dll

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注意，項目目標框架最好設置為.NET Framework 4.6.1及以上。因為Microsoft.Extensions.Configuration.dll，依賴.NETStandard2.0?

?下表列出了 .NET Standard 的所有版本及其支持的平臺

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AutofacExt幫助類

using Autofac; using Autofac.Configuration; using Microsoft.Extensions.Configuration;namespace autofacConsole {public static class AutofacExt{private static IContainer _container;public static void InitAutofac(){// Add the configuration to the ConfigurationBuilder.var config = new ConfigurationBuilder();config.AddJsonFile("autofac.json");// Register the ConfigurationModule with Autofac.var module = new ConfigurationModule(config.Build());var builder = new ContainerBuilder();builder.RegisterModule(module);// Set the dependency resolver to be Autofac._container = builder.Build();}/// <summary>/// 從容器中獲取對象/// </summary>/// <typeparam name="T"></typeparam>public static T GetFromFac<T>(){return _container.Resolve<T>();// return (T)DependencyResolver.Current.GetService(typeof(T)); }public static T GetFromFac<T>(string name){return _container.ResolveNamed<T>(name);}} }

?客戶端調用

public interface IOutput{void Write(string content);}
public class ConsoleOutput : IOutput{public void Write(string content){Console.WriteLine(content);}}class Program{ static void Main(string[] args){AutofacExt.InitAutofac();var writer =AutofacExt.GetFromFac<IOutput>();writer.WriteDate();Console.ReadKey();}}

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?json配置文件配置

Autofac.json?

{"defaultAssembly": "autofacConsole","components": [{"type": "autofacConsole.ConsoleOutput, autofacConsole","services": [{"type": "autofacConsole.IOutput,autofacConsole"}],"instanceScope": "single-instance","injectProperties": true}] }

設置為如果較新則復制

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參考資料：

https://github.com/autofac/Autofac

https://autofac.readthedocs.io/en/latest/getting-started/index.html

https://autofac.readthedocs.io/en/latest/configuration/xml.html

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轉載于:https://www.cnblogs.com/xinyf/p/9842205.html

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