策略可以使用因此，假设您的数据库上下文位于DI中，您可以执行类似的操作

So, assuming your db context is in DI you could do something like

public class CheckAuthorizeHandler : AuthorizationHandler<CheckAuthorizeRequirement>
{
    MyContext _context;

    public CheckAuthorizeHandler(MyContext context)
    {
        _context = context;
    }

    protected override Task HandleRequirementAsync(
        AuthorizationHandlerContext context, 
        MyRequirement requirement)
    {
        // Do something with _context
        // Check if the requirement is fulfilled.
        return Task.CompletedTask;
    }
}

请注意，在执行此操作时，您必须将需求设置为单独的类，而不能执行CheckAuthorize : AuthorizationHandler<CheckAuthorize>, IAuthorizationRequirement，因此必须执行

Note that when you do this you have to make your requirement a seperate class, you can't do CheckAuthorize : AuthorizationHandler<CheckAuthorize>, IAuthorizationRequirement, so you'd have to do

public CheckAuthorizeRequirement : IAuthorizationRequirement
{
}

最后，您需要在DI系统中注册您的处理程序

And finally you need to register your handler in the DI system

services.AddTransient<IAuthorizationHandler, CheckAuthorizeHandler>();