.NET CORE Autofac批量依赖注入

.NET CORE Autofac批量依赖注入

1、右键添加Autofac的Nuget包
2、修改Startup类的ConfigureServices方法：
单个依赖注入是：

services.AddTransient<IUserInfoService, UserService>();

批量依赖注入是：

//批量匹配注入，使用AutoFac提供的容器接管当前项目默认容器
   var builder = new ContainerBuilder();
   //注入entity层的repository类builder.RegisterType(typeof(TUserRepository)).As(typeof(IUserRepository)).InstancePerDependency();
   //批量注入Repository的类            
   var assembly = Assembly.Load("Service");
   builder.RegisterAssemblyTypes(assembly).AsImplementedInterfaces();

   builder.Populate(services);
   var container = builder.Build();
   //ConfigureServices方法由void改为返回IServiceProvider
   return new AutofacServiceProvider(container);

整个方法示例：

public IServiceProvider ConfigureServices(IServiceCollection services)
{
    services.Configure<CookiePolicyOptions>(options =>
    {
        // This lambda determines whether user consent for non-essential cookies is needed for a given request.
        options.CheckConsentNeeded = context => true;
        options.MinimumSameSitePolicy = SameSiteMode.None;
    });
    #region EF连接MYSQL
    services.AddDbContext<EFDbContext>(options =>
    {
        var connection = this.Configuration["DbConnection:mySqlConn"];
        options.UseMySQL(connection);
    });

    #endregion
    //将Iservices注入到Services，依赖注入
    //services.AddTransient<IUserInfoService, UserService>();
    services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);


    批量匹配注入，使用AutoFac提供的容器接管当前项目默认容器
    var builder = new ContainerBuilder();
    //注入entity层的repository类builder.RegisterType(typeof(TUserRepository)).As(typeof(IUserRepository)).InstancePerDependency();
    //批量注入Repository的类            
    var assembly = Assembly.Load("Service");
    builder.RegisterAssemblyTypes(assembly).AsImplementedInterfaces();

    builder.Populate(services);
    var container = builder.Build();
    //ConfigureServices方法由void改为返回IServiceProvider
    return new AutofacServiceProvider(container);

}

依赖注入相关理解可以去看：
https://blog.youkuaiyun.com/hiliqi/article/details/80611209