Bir request geçersiz veri içerdiğinde, **FastAPI** içeride `RequestValidationError` raise eder.

Ve bunun için varsayılan bir exception handler da içerir.

Override etmek için `RequestValidationError`’ı import edin ve exception handler’ı `@app.exception_handler(RequestValidationError)` ile decorate edin.

Exception handler, bir `Request` ve exception’ı alır.

{* ../../docs_src/handling_errors/tutorial004_py310.py hl[2,14:19] *}

			closer.Close()
		}
	})
}

// NoAuthMiddleware no auth middle ware.
func NoAuthMiddleware(h http.Handler) http.Handler {
	return h
}

// AuthMiddleware checks if the bearer token is valid and authorized.
func AuthMiddleware(h http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {

participant client as Client
participant handler as Exception handler
participant dep as Dep with yield
participant operation as Path Operation
participant tasks as Background tasks

    Note over client,operation: Can raise exceptions, including HTTPException
    client ->> dep: Start request
    Note over dep: Run code up to yield
    opt raise Exception
        dep -->> handler: Raise Exception

 *  Fix: Don't drop callbacks on unexpected exceptions. When an interceptor throws an unchecked
    exception the callback is now notified that the call was canceled. The exception is still sent
    to the uncaught exception handler for reporting and recovery.

 *  Fix: Un-deprecate `MockResponse.setHeaders()` and other setters. These were deprecated in OkHttp
    4.0 but that broke method chaining for Java callers.

    instead of notifying the thread's uncaught exception handler. We've added a
    new API, `Call.isCanceled()` to check if a call has been canceled.

 *  New: Update `MultipartBuilder` to support content length.
 *  New: Make it possible to mock `OkHttpClient` and `Call`.
 *  New: Update to h2-14 and hpack-9.
 *  New: OkHttp includes a user-agent by default, like `okhttp/2.1.0-RC1`.
 *  Fix: Handle response code `308 Permanent Redirect`.

import org.codelibs.core.io.FileUtil;
import org.codelibs.fess.crawler.exception.CrawlerSystemException;
import org.eclipse.jetty.server.Handler;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.ServerConnector;
import org.eclipse.jetty.server.handler.DefaultHandler;
import org.eclipse.jetty.server.handler.ResourceHandler;
import org.eclipse.jetty.util.resource.ResourceFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

Field: ('path', 'item_id'), Error: Input should be a valid integer, unable to parse string as an integer
```

### Überschreiben des `HTTPException`-Fehlerhandlers { #override-the-httpexception-error-handler }

Auf die gleiche Weise können Sie den `HTTPException`-Handler überschreiben.

Zum Beispiel könnten Sie eine Klartext-Response statt JSON für diese Fehler zurückgeben wollen:

{* ../../docs_src/handling_errors/tutorial004_py310.py hl[3:4,9:11,25] *}

    Note over dep: Ejecutar código hasta yield
    opt raise Exception
        dep -->> handler: Lanzar Exception
        handler -->> client: Response HTTP de error
    end
    dep ->> operation: Ejecutar dependencia, por ejemplo, sesión de BD
    opt raise
        operation -->> dep: Lanzar Exception (por ejemplo, HTTPException)
        opt handle

		noQueries := len(r.URL.RawQuery) == 0
		return ctypeOk && authOk && noQueries
	}).HandlerFunc(httpTraceAll(sts.AssumeRole))

	// Assume roles with JWT handler, handles both ClientGrants and WebIdentity.
	stsRouter.Methods(http.MethodPost).MatcherFunc(func(r *http.Request, rm *mux.RouteMatch) bool {

		Object:       oi,
		ReqParams:    extractReqParams(r),
		RespElements: extractRespElements(w),
		UserAgent:    r.UserAgent(),
		Host:         handlers.GetSourceIP(r),
	})
}

// RestoreObjectHandler - POST restore object handler.
// ----------
func (api objectAPIHandlers) PostRestoreObjectHandler(w http.ResponseWriter, r *http.Request) {
	ctx := newContext(r, w, "PostRestoreObject")