.NET8依赖注入新特性Keyed services - ToB企服应用市场:ToB评测及商务社交产业平台

using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.SignalR;
var builder = WebApplication.CreateBuilder(args);
builder.Services.AddKeyedSingleton<ICache, BigCache>("big");
builder.Services.AddKeyedSingleton<ICache, SmallCache>("small");
builder.Services.AddControllers();
var app = builder.Build();
app.MapGet("/big", ([FromKeyedServices("big")] ICache bigCache) => bigCache.Get("date"));
app.MapGet("/small", ([FromKeyedServices("small")] ICache smallCache) =>
smallCache.Get("date"));
app.MapControllers();
app.Run();
public interface ICache
{
object Get(string key);
}
public class BigCache : ICache
{
public object Get(string key) => $"Resolving {key} from big cache.";
}
public class SmallCache : ICache
{
public object Get(string key) => $"Resolving {key} from small cache.";
}
[ApiController]
[Route("/cache")]
public class CustomServicesApiController : Controller
{
[HttpGet("big-cache")]
public ActionResult<object> GetOk([FromKeyedServices("big")] ICache cache)
{
return cache.Get("data-mvc");
}
}
public class MyHub : Hub
{
public void Method([FromKeyedServices("small")] ICache cache)
{
Console.WriteLine(cache.Get("signalr"));
}
}

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