步骤如下： 1.获取所有相关业务程序集 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 publ
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原文:NetCore3.0实现自界说IOC容器注入在之前的ASP.NET MVC实现依赖注入一文中，通过替换默认的ControllerFactory来到达对Controller生命周期的拦截，实现自界说的东西注入，在NetCore3.0中需要从头实现，，法式如下：
1.获取所有相关业务措施集
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public static List<Assembly> GetFrameworkAssemblys()
{
var list = new List<Assembly>();
var deps = DependencyContext.Default;
var libs = deps.CompileLibraries;
foreach (var lib in libs)
{
if (!lib.Serviceable && lib.Type != "package" && lib.Name.StartsWith("FastCloud"))
{
var assembly = AssemblyLoadContext.Default.LoadFromAssemblyName(new AssemblyName(lib.Name));
list.Add(assembly);
}
}
return list;
}
2.对所有Component组件注册
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public class InjectContext
{
private static ContainerBuilder Container;
public static void Init()
{
InjectFrameWork();
}
public static void InjectFrameWork()
{
Container = new ContainerBuilder();
//获框架取所有措施集
List<Assembly> assemblies = CloudUtil.GetFrameworkAssemblys();
//注入框架所有Component组件
Container.RegisterAssemblyTypes(assemblies.ToArray(), typeof(Component), true);
Container.Build(CotainerEnum.BuidlModel.OverWrite);
}
public static object Resolve(Type Type, CotainerEnum.TypeEqual TypeEqual = CotainerEnum.TypeEqual.Ref)
{
return Container.Resolve(Type, TypeEqual);
}
public static List<Type> GetRegistType(Type @Type)
{
return Container.GetRegistType(@Type);
}
}
3.实现自界说Controller工厂
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public class CloudControllerActivator : IControllerActivator
{
public object Create(ControllerContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (context.ActionDescriptor == null)
{
throw new ArgumentException(nameof(ControllerContext.ActionDescriptor));
}
var controllerTypeInfo = context.ActionDescriptor.ControllerTypeInfo;
if (controllerTypeInfo == null)
{
throw new ArgumentException(nameof(context.ActionDescriptor.ControllerTypeInfo));
}
Type controllerType = controllerTypeInfo.AsType();
return InjectContext.Resolve(controllerType);
}
public void Release(ControllerContext context, object controller)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (controller == null)
{
throw new ArgumentNullException(nameof(controller));
}
var disposable = controller as IDisposable;
if (disposable != null)
{
disposable.Dispose();
}
}
}
4.改削配置，使用自界说Controller工厂
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//替换默认Controller工厂
var defaultActivator = services.FirstOrDefault(c => c.ServiceType == typeof(IControllerActivator));
if (defaultActivator != null)
{
services.Remove(defaultActivator);
}
services.AddSingleton<IControllerActivator, CloudControllerActivator>();
NetCore3.0实现自界说IOC容器注入
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