NET Core注入写法

注入接口

services.AddScoped(typeof(IUserService), typeof(UserService));
services.AddScoped<IUserService, UserService>();

无接口，自己注入自己

services.AddScoped<UserService>();
services.AddScoped(typeof(UserService));

注入，构造函数传参

services.AddScoped<IUserService, UserSerivce>(x => {
    
    return new UserSerivce("");});
services.AddScoped<IUserService>(x => {
    
    return new UserSerivce("");});
services.AddScoped(typeof(IUserService), x => {
    
    return new UserSerivce("");});

注入，构造函数传参，需要依赖另一服务

services.Add<IUserService, UserService>(x => {
    
    return new UserService(x.GetServce<SomeService>());});

动态注入多个接口实现

var assembly = Assembly.GetExecutingAssembly().DefinedTypes.Where(a => a.Name.EndsWith("Service") && !a.Name.StartWith("I"));
foreach(var assm in assembly)
{
    
    
    services.AddTransient(assm.GetInterfaces.FirstOrDefault(), assm);
}

调用的时候：IEnumerable<IUserService>