JsonProcessingFeature fails on single byte POST

[ghost]

When attempting to POST a single digit JsonNumber as the contents of the body using the JsonProcessingFeature, the parse fails with an exception from javax.json of not enough characters to detect the input encoding.

While this is probably a bug with org.glassfish.json.UnicodeDetectingInputStream from the JSON-P project, trying to avoid this with using application/json; charset=utf-8 as the Content-Type doesn't skip the encoding detection.

Eg:

curl -X POST -H "Content-Type: application/json" -d "1" http://localhost:9998/Eg

and

curl -X POST -H "Content-Type: application/json; charset=utf-8" -d "1" http://localhost:9998/Eg

both fail.

package eg;

import java.net.URI;
import java.util.logging.ConsoleHandler;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.json.JsonValue;
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.core.UriBuilder;

import org.glassfish.grizzly.http.server.HttpServer;
import org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpServerFactory;
import org.glassfish.jersey.jsonp.JsonProcessingFeature;
import org.glassfish.jersey.server.ResourceConfig;

@Path("Eg")
public class Eg {

    @POST
    @Consumes("application/json")
    public void getHello(JsonValue val) {
        System.out.println(val);
    }

    public static void main(String[] args) throws Exception {
        makeGrizzlyLog();

        URI baseUri = UriBuilder.fromUri("http://localhost/").port(9998).build();
        ResourceConfig cfg = new ResourceConfig().register(Eg.class)
                .register(JsonProcessingFeature.class);
        HttpServer server = GrizzlyHttpServerFactory.createHttpServer(baseUri, cfg);

        Runtime.getRuntime()
                .addShutdownHook(new Thread(() -> {
                    server.shutdownNow();
                }));

        server.start();
        Thread.currentThread().join();
    }

    private static void makeGrizzlyLog() {
        Logger log = Logger.getLogger("org.glassfish.grizzly.http.server.HttpHandler");
        log.setLevel(Level.FINE);
        log.setUseParentHandlers(false);
        ConsoleHandler ch = new ConsoleHandler();
        ch.setLevel(Level.ALL);
        log.addHandler(ch);
    }

}

Stack trace the same with both curl invocations.

FINE: service exception
javax.json.JsonException: Cannot auto-detect encoding, not enough chars
	at org.glassfish.json.UnicodeDetectingInputStream.detectEncoding(UnicodeDetectingInputStream.java:130)
	at org.glassfish.json.UnicodeDetectingInputStream.<init>(UnicodeDetectingInputStream.java:75)
	at org.glassfish.json.JsonParserImpl.<init>(JsonParserImpl.java:95)
	at org.glassfish.json.JsonReaderImpl.<init>(JsonReaderImpl.java:73)
	at org.glassfish.json.JsonReaderFactoryImpl.createReader(JsonReaderFactoryImpl.java:71)
	at org.glassfish.json.jaxrs.JsonValueBodyReader.readFrom(JsonValueBodyReader.java:93)
	at org.glassfish.json.jaxrs.JsonValueBodyReader.readFrom(JsonValueBodyReader.java:66)
	at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.invokeReadFrom(ReaderInterceptorExecutor.java:257)
	at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.aroundReadFrom(ReaderInterceptorExecutor.java:236)
	at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor.proceed(ReaderInterceptorExecutor.java:156)
	at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundReadFrom(MappableExceptionWrapperInterceptor.java:73)
	at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor.proceed(ReaderInterceptorExecutor.java:156)
	at org.glassfish.jersey.message.internal.MessageBodyFactory.readFrom(MessageBodyFactory.java:1091)
	at org.glassfish.jersey.message.internal.InboundMessageContext.readEntity(InboundMessageContext.java:874)
	at org.glassfish.jersey.server.ContainerRequest.readEntity(ContainerRequest.java:271)
	at org.glassfish.jersey.server.internal.inject.EntityParamValueParamProvider$EntityValueSupplier.apply(EntityParamValueParamProvider.java:97)
	at org.glassfish.jersey.server.internal.inject.EntityParamValueParamProvider$EntityValueSupplier.apply(EntityParamValueParamProvider.java:80)
	at org.glassfish.jersey.server.spi.internal.ParamValueFactoryWithSource.apply(ParamValueFactoryWithSource.java:74)
	at org.glassfish.jersey.server.spi.internal.ParameterValueHelper.getParameterValues(ParameterValueHelper.java:92)
	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$AbstractMethodParamInvoker.getParamValues(JavaResourceMethodDispatcherProvider.java:133)
	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$VoidOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:183)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:103)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:493)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:415)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:104)
	at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:277)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:272)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:268)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:316)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:298)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:268)
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:289)
	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:256)
	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:703)
	at org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpContainer.service(GrizzlyHttpContainer.java:377)
	at org.glassfish.grizzly.http.server.HttpHandler$1.run(HttpHandler.java:224)
	at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:593)
	at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:573)
	at java.lang.Thread.run(Thread.java:748)

Using:

• Oracle JDK 1.8.0_144
• Jersey 2.26
  • org.glassfish.jersey.containers:jersey-container-grizzly2-http
  • org.glassfish.jersey.inject:jersey-hk2
  • org.glassfish.jersey.media:jersey-media-json-processing

[jftsunami]

Related issue javaee/jsonp#76