Autofac 动态获取对象静态类获取对象

Autofac 从容器中获取对象

静态类或Service场景可以动态，可以直接动态获取对象

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/// <summary>
/// 从容器中获取对象
/// </summary>
/// <typeparam name="T"></typeparam>
public static T GetFromFac<T>()
{
	return _container.Resolve<T>();
}

使用方法：#

Startup->ConfigureServices-> 加入代码 AutofacCore.InitContainer(container);

AutofacCore类：

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using Autofac;
using Autofac.Extensions.DependencyInjection;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;

namespace CodeHelper
{
    public static class AutofacCore
    {
        private static IContainer _container;

        public static void InitContainer(IContainer container)
        {
            _container = container;
        }

        public static IContainer InitAutofac(IServiceCollection services)
        {
            var builder = new ContainerBuilder();

            //注册数据库基础操作和工作单元
            //services.AddScoped(typeof(IRepository<>), typeof(Repository<>));
            //services.AddScoped(typeof(IUnitWork), typeof(UnitWork));

            //注册app层(废弃->不使用此方法,修改采用配置文件)
            //builder.RegisterAssemblyTypes(Assembly.GetExecutingAssembly());

            ////防止单元测试时已经注入
            //if (services.All(u => u.ServiceType != typeof(ICacheContext)))
            //{
            //    services.AddScoped(typeof(ICacheContext), typeof(CacheContext));
            //}
            //if (services.All(u => u.ServiceType != typeof(IHttpContextAccessor)))
            //{
            //    services.AddScoped(typeof(IHttpContextAccessor), typeof(HttpContextAccessor));
            //}

            //将配置添加到ConfigurationBuilder
            //var config = new ConfigurationBuilder().SetBasePath(Directory.GetCurrentDirectory());
            //config.AddJsonFile("autofac.json");
            //config.AddJsonFile来自Microsoft.Extensions.Configuration.Json
            //config.AddXmlFile来自Microsoft.Extensions.Configuration.Xml

            //用Autofac注册ConfigurationModule
            //var module = new ConfigurationModule(config.Build());

            //builder.RegisterModule(module);
            //builder.Populate(services);
            //_container = builder.Build();
            return _container;

        }

        /// <summary>
        /// 从容器中获取对象
        /// </summary>
        /// <typeparam name="T"></typeparam>
        public static T GetFromFac<T>()
        {
            return _container.Resolve<T>();
        }
    }
}

代码调用:#

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var Configuration = AutofacCore.GetFromFac<IConfiguration>();
AppId = Configuration["AppSettings:AppId"];
AppSecret = Configuration["AppSettings:AppSecret"];