I can't perform a redirect in JEX v3.0

[dmitriy-bodroff]

ctx.redirect(encodedUrlPath, HttpStatus.MOVED_PERMANENTLY_301.status());

Apr 12, 2025 5:14:19 PM io.avaje.jex.core.ExceptionManager unhandledException
SEVERE: Uncaught exception
io.avaje.jex.http.RedirectException: Redirect
	at io.avaje.jex.core.JdkContext.redirect(JdkContext.java:432)
	at <...>
	at io.avaje.jex.core.ExceptionManager.handle(ExceptionManager.java:42)
	at io.avaje.jex.core.ServiceManager.handleException(ServiceManager.java:119)
	at io.avaje.jex.core.RoutingHandler.handle(RoutingHandler.java:39)
	at jdk.httpserver/com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:98)
	at jdk.httpserver/sun.net.httpserver.AuthFilter.doFilter(AuthFilter.java:82)
	at jdk.httpserver/com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:101)
	at jdk.httpserver/sun.net.httpserver.ServerImpl$Exchange$LinkHandler.handle(ServerImpl.java:873)
	at jdk.httpserver/com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:98)
	at jdk.httpserver/sun.net.httpserver.ServerImpl$Exchange.run(ServerImpl.java:849)
	at java.base/java.util.concurrent.ThreadPerTaskExecutor$TaskRunner.run(ThreadPerTaskExecutor.java:314)
	at java.base/java.lang.VirtualThread.run(VirtualThread.java:329)

Where mode is null.

[SentryMan]

is this in a filter or a handler?

[dmitriy-bodroff]

Here.

@Controller
@AllArgsConstructor(access = PACKAGE)
final class NotFoundController implements ExceptionHandler<NotFoundException> {

    // ...

    @Override
    public void handle(final Context ctx, final NotFoundException exception) {
        // ...
        ctx.redirect(encodedUrlPath, HttpStatus.MOVED_PERMANENTLY_301.status()); // here
        // ...
    }
}

@Singleton
@AllArgsConstructor(access = PACKAGE)
final class WebRunnerImpl implements WebRunner {

    private final ExceptionHandler<NotFoundException> notFoundController;
    // ...

    @Override
    public void run(final Runnable onShutdown) {
        val templateEngine = createTemplateEngine(this.appConfig.inImageCode());

        val publicContent = StaticContent
                .ofClassPath("/public/")
                .route("/public/")
                .directoryIndex("/")
                .build();

        Jex.create()
                .plugin(publicContent)
                .register(new JteTemplateRender(templateEngine), "jte")
                .routing(this.controllers)
                .error(NotFoundException.class, this.notFoundController) // here
                .error(Exception.class, this.errorController)
                .port(this.appConfig.websitePort())
                .start()
                .onShutdown(onShutdown);
    }

    // ...
}

[dmitriy-bodroff]

I wrote the temporary workaround.

import io.avaje.jex.core.Constants;
import io.avaje.jex.http.Context;

import java.io.IOException;
import java.io.UncheckedIOException;

public final class ControllerUtil {

    private ControllerUtil() {
    }

    public static void redirect(
            final Context ctx,
            final String location,
            final int httpStatusCode) {
        ctx.header(Constants.LOCATION, location);
        ctx.status(httpStatusCode);
        try {
            ctx.exchange().sendResponseHeaders(httpStatusCode, -1);
            ctx.exchange().getResponseBody().close();
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }
}

[SentryMan]

I see the problem