throwValidationError(messages -> messages.addErrorsFileIsNotSupported(GLOBAL, fileName), this::asListHtml);
        }
        saveInfo(messages -> messages.addSuccessBulkProcessStarted(GLOBAL));
        return redirect(getClass()); // no-op
    }

    protected void asyncImport(final String fileName, final File tempFile) {
        final int fileType;
        if (fileName.startsWith("system") && fileName.endsWith(".properties")) {

/// tip | "Tipp"

Möglicherweise ist `ORJSONResponse` eine schnellere Alternative.

///

### `RedirectResponse`

Gibt eine HTTP-Weiterleitung (HTTP-Redirect) zurück. Verwendet standardmäßig den Statuscode 307 – Temporäre Weiterleitung (Temporary Redirect).

Sie können eine `RedirectResponse` direkt zurückgeben:

```Python hl_lines="2  9"
{!../../docs_src/custom_response/tutorial006.py!}
```

---

		log.Printf("%s %s", r.Method, r.RequestURI)
		if r.RequestURI != "/" {
			http.NotFound(w, r)
			return
		}
		if clientSec != "" {
			http.Redirect(w, r, config.AuthCodeURL(state), http.StatusFound)
		} else {
			http.Redirect(w, r, implicitFlowURL(config, state), http.StatusFound)
		}
	})

	http.HandleFunc("/oauth2/callback", func(w http.ResponseWriter, r *http.Request) {

## Follow-up Requests

When your requested URL has moved, the webserver will return a response code like `302` to indicate the document’s new URL. OkHttp will follow the redirect to retrieve a final response.

            "Test",
            "Redirect from /a to /b",
          ),
        body = "/a has moved!",
      ),
    )
    server.enqueue(
      MockResponse(body = "this is the redirect target"),
    )

    val call = client.newCall(Request(server.url("/")))
    val response = call.execute()
    assertThat(response.body.string()).isEqualTo("this is the redirect target")

{!../../docs_src/custom_response/tutorial001.py!}
```

/// tip

It's possible that `ORJSONResponse` might be a faster alternative.

///

### `RedirectResponse`

Returns an HTTP redirect. Uses a 307 status code (Temporary Redirect) by default.

You can return a `RedirectResponse` directly:

```Python hl_lines="2  9"
{!../../docs_src/custom_response/tutorial006.py!}
```

---

Swagger UI will handle it behind the scenes for you, but it needs this "redirect" helper.

///

### Create a *path operation* to test it

Now, to be able to test that everything works, create a *path operation*:

{* ../../docs_src/custom_docs_ui/tutorial001.py hl[36:38] *}

	if err != nil {
		return err
	}
	// Handle redirects.
	if res.StatusCode/100 == 3 {
		newURL, err := res.Location()
		if err != nil {
			return fmt.Errorf("resolving redirect: %v", err)
		}
		if !strings.HasPrefix(newURL.String(), *root) {
			// Skip off-site redirects.
			return nil
		}
		crawl(newURL.String(), url)
		return nil
	}
	if res.StatusCode != 200 {

    //                                                                           =========

    protected HtmlResponse asDictIndexHtml() {
        return redirect(AdminDictAction.class);
    }

    private HtmlResponse asListHtml(final String dictId) {
        return asHtml(path_AdminDictStopwords_AdminDictStopwordsJsp).renderWith(data -> {

	// accordingly. Client receives a HTTP error for invalid/unsupported
	// signatures.
	//
	// Validates all incoming requests to have a valid date header.
	setAuthMiddleware,
	// Redirect some pre-defined browser request paths to a static location
	// prefix.
	setBrowserRedirectMiddleware,
	// Adds 'crossdomain.xml' policy middleware to serve legacy flash clients.
	setCrossDomainPolicyMiddleware,