通过Filter来支持;分别有IResourceFilter AuthorizeFilter ActionFilter ExceptionFilter ResultFilter,Filter也被称为拦截器
那么 ASP.NET Core Filter如何支持依赖注入?可以通过全局注册,支持依赖注入。通过TypeFilter(typeof(Filter)) 标记在方法,标记在控制器。通过ServiceType(typeof(Filter))标记在方法,标记在控制器,必须要注册Filter这类;TypeFilter和ServiceType的本质是实现了一个IFilterFactory接口;
代码如下
public class HomeController : Controller { private readonly ILoggerFactory _loggerFactory; public HomeController(ILoggerFactory factory) { _loggerFactory = factory; } //[TestActionFilter] // [TypeFilter(typeof(TestActionFilterAttribute))] // [ServiceFilter(typeof(TestActionFilterAttribute))] public IActionResult Index() { return View(); } public IActionResult Privacy() { return View(); }
public class TestActionFilterAttribute : Attribute, IActionFilter { private readonly ILogger _logger; public TestActionFilterAttribute(ILoggerFactory logger) { _logger = logger.CreateLogger("TestActionFilterAttribute"); } public void OnActionExecuted(ActionExecutedContext context) { _logger.LogDebug($"11111"); if (context.HttpContext.Request.Query.TryGetValue("id", out StringValues value)) { Console.WriteLine(value.First()); } else { context.HttpContext.Response.Redirect("/Error/404"); } } public void OnActionExecuting(ActionExecutingContext context) { } }
https://gitee.com/conanOpenSource_admin/service-filter_-type-filter