NET 5 过滤器给控制器传值

1.方法一 (HttpContext.Items)

 获取

 

中间件

public class MySuperAmazingMiddleware
{
    private readonly RequestDelegate _next;

    public MySuperAmazingMiddleware(RequestDelegate next)
    {
        _next = next;
    }

    public Task Invoke(HttpContext context)
    {
        var mySuperAmazingObject = GetSuperAmazingObject();

        context.Items.Add("SuperAmazingObject", mySuperAmazingObject );

        // Call the next delegate/middleware in the pipeline
        return this._next(context);
    }
}

获取

var mySuperAmazingObject = (SuperAmazingObject)HttpContext.Items["mySuperAmazingObject"];

2.方法二 (HttpContext.User)

public class SampleActionFilter : IAsyncActionFilter
{
    public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
    {
        var claimsIdentity = new ClaimsIdentity(new Claim[] {
            new Claim(ClaimTypes.Name, "test") }, "Basic");
        var claimsPrincipal = new ClaimsPrincipal(claimsIdentity);
        context.HttpContext.User = claimsPrincipal;
        await next();
    }
}

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc(options =>
    {
        options.Filters.Add<SampleActionFilter>();
    });
}

public class HomeController : Controller
{
    public IActionResult Index()
    {
        return Content("Current User: " + User.Identity.Name );
    }
}