Resource Parameter Deserialization Failure Causes 500

[Volkan Yazıcı]

Hello,

When Jackson fails to serialize a user input, it throws an exception, that eventually cascades into an HTTP 500 error. Instead, I believe, this should have had caused a 400. Am I expecting something wrong? Any ideas?

Here is an example to reproduce the case:

public class DemoModel {

    public URL url;

}

@Path("/demo")
@Consumes(MediaType.APPLICATION_JSON)
public class DemoResource {

    @POST
    public Response test(DemoModel model) {
        return Response.ok().build();
    }

}

$ curl -v http://localhost:8080/demo -H "Content-Type: application/json" -d '{"url": "no-scheme.com"}'

2016-04-27 21:38:42.850 ERROR  [dw-19 - POST /demo] i.d.j.e.LoggingExceptionMapper -  Error handling a request: afe3c9c64f1549d5 
java.net.MalformedURLException: no protocol: no-scheme.com
	at java.net.URL.<init>(URL.java:586) ~[na:1.8.0_60]
	at java.net.URL.<init>(URL.java:483) ~[na:1.8.0_60]
	at java.net.URL.<init>(URL.java:432) ~[na:1.8.0_60]
	at com.fasterxml.jackson.databind.deser.std.FromStringDeserializer$Std._deserialize(FromStringDeserializer.java:212) ~[jackson-databind-2.6.3.jar:2.6.3]
	at com.fasterxml.jackson.databind.deser.std.FromStringDeserializer.deserialize(FromStringDeserializer.java:122) ~[jackson-databind-2.6.3.jar:2.6.3]
	at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:520) ~[jackson-databind-2.6.3.jar:2.6.3]
	at com.fasterxml.jackson.databind.deser.impl.FieldProperty.deserializeAndSet(FieldProperty.java:101) ~[jackson-databind-2.6.3.jar:2.6.3]
	at com.fasterxml.jackson.module.afterburner.deser.SuperSonicBeanDeserializer.deserialize(SuperSonicBeanDeserializer.java:156) ~[jackson-module-afterburner-2.6.3.jar:2.6.3]
	at com.fasterxml.jackson.databind.ObjectReader._bind(ObjectReader.java:1470) ~[jackson-databind-2.6.3.jar:2.6.3]
	at com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:912) ~[jackson-databind-2.6.3.jar:2.6.3]
	at com.fasterxml.jackson.jaxrs.base.ProviderBase.readFrom(ProviderBase.java:811) ~[jackson-jaxrs-base-2.6.3.jar:2.6.3]
	at io.dropwizard.jersey.jackson.JacksonMessageBodyProvider.readFrom(JacksonMessageBodyProvider.java:63) ~[dropwizard-jersey-0.9.2.jar:0.9.2]
	at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.invokeReadFrom(ReaderInterceptorExecutor.java:256) ~[jersey-common-2.22.1.jar:na]
	at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.aroundReadFrom(ReaderInterceptorExecutor.java:235) ~[jersey-common-2.22.1.jar:na]
	at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor.proceed(ReaderInterceptorExecutor.java:155) ~[jersey-common-2.22.1.jar:na]
	at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundReadFrom(MappableExceptionWrapperInterceptor.java:74) ~[jersey-server-2.22.1.jar:na]
	at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor.proceed(ReaderInterceptorExecutor.java:155) ~[jersey-common-2.22.1.jar:na]
	at org.glassfish.jersey.message.internal.MessageBodyFactory.readFrom(MessageBodyFactory.java:1085) ~[jersey-common-2.22.1.jar:na]
	at org.glassfish.jersey.message.internal.InboundMessageContext.readEntity(InboundMessageContext.java:874) ~[jersey-common-2.22.1.jar:na]
	at org.glassfish.jersey.server.ContainerRequest.readEntity(ContainerRequest.java:271) ~[jersey-server-2.22.1.jar:na]
	at org.glassfish.jersey.server.internal.inject.EntityParamValueFactoryProvider$EntityValueFactory.provide(EntityParamValueFactoryProvider.java:96) ~[jersey-server-2.22.1.jar:na]
	at org.glassfish.jersey.server.spi.internal.ParamValueFactoryWithSource.provide(ParamValueFactoryWithSource.java:71) ~[jersey-server-2.22.1.jar:na]
	at org.glassfish.jersey.server.spi.internal.ParameterValueHelper.getParameterValues(ParameterValueHelper.java:94) ~[jersey-server-2.22.1.jar:na]
	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$AbstractMethodParamInvoker.getParamValues(JavaResourceMethodDispatcherProvider.java:127) ~[jersey-server-2.22.1.jar:na]
	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:160) ~[jersey-server-2.22.1.jar:na]
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99) ~[jersey-server-2.22.1.jar:na]
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389) ~[jersey-server-2.22.1.jar:na]
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347) ~[jersey-server-2.22.1.jar:na]
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102) ~[jersey-server-2.22.1.jar:na]
	at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:326) ~[jersey-server-2.22.1.jar:na]
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271) [jersey-common-2.22.1.jar:na]
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267) [jersey-common-2.22.1.jar:na]
	at org.glassfish.jersey.internal.Errors.process(Errors.java:315) [jersey-common-2.22.1.jar:na]
	at org.glassfish.jersey.internal.Errors.process(Errors.java:297) [jersey-common-2.22.1.jar:na]
	at org.glassfish.jersey.internal.Errors.process(Errors.java:267) [jersey-common-2.22.1.jar:na]
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317) [jersey-common-2.22.1.jar:na]
	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305) [jersey-server-2.22.1.jar:na]
	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154) [jersey-server-2.22.1.jar:na]
	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:471) [jersey-container-servlet-core-2.22.1.jar:na]
	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:425) [jersey-container-servlet-core-2.22.1.jar:na]
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:383) [jersey-container-servlet-core-2.22.1.jar:na]
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:336) [jersey-container-servlet-core-2.22.1.jar:na]
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:223) [jersey-container-servlet-core-2.22.1.jar:na]
	at io.dropwizard.jetty.NonblockingServletHolder.handle(NonblockingServletHolder.java:49) [dropwizard-jetty-0.9.2.jar:0.9.2]
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669) [jetty-servlet-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:83) [jetty-servlets-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:300) [jetty-servlets-9.2.13.v20150730.jar:9.2.13.v20150730]
	at io.dropwizard.jetty.BiDiGzipFilter.doFilter(BiDiGzipFilter.java:132) [dropwizard-jetty-0.9.2.jar:0.9.2]
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) [jetty-servlet-9.2.13.v20150730.jar:9.2.13.v20150730]
	at io.dropwizard.servlets.ThreadNameFilter.doFilter(ThreadNameFilter.java:29) [dropwizard-servlets-0.9.2.jar:0.9.2]
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) [jetty-servlet-9.2.13.v20150730.jar:9.2.13.v20150730]
	at io.dropwizard.jersey.filter.AllowedMethodsFilter.handle(AllowedMethodsFilter.java:43) [dropwizard-jersey-0.9.2.jar:0.9.2]
	at io.dropwizard.jersey.filter.AllowedMethodsFilter.doFilter(AllowedMethodsFilter.java:38) [dropwizard-jersey-0.9.2.jar:0.9.2]
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) [jetty-servlet-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585) [jetty-servlet-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127) [jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515) [jetty-servlet-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061) [jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) [jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) [jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
	at com.codahale.metrics.jetty9.InstrumentedHandler.handle(InstrumentedHandler.java:240) [metrics-jetty9-3.1.2.jar:3.1.2]
	at io.dropwizard.jetty.RoutingHandler.handle(RoutingHandler.java:51) [dropwizard-jetty-0.9.2.jar:0.9.2]
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) [jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:95) [jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) [jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.server.handler.StatisticsHandler.handle(StatisticsHandler.java:159) [jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) [jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.server.Server.handle(Server.java:499) [jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310) [jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257) [jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540) [jetty-io-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635) [jetty-util-9.2.13.v20150730.jar:9.2.13.v20150730]
	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555) [jetty-util-9.2.13.v20150730.jar:9.2.13.v20150730]
	at java.lang.Thread.run(Thread.java:745) [na:1.8.0_60]
127.0.0.1 - - [27/Apr/2016:19:38:42 +0000] "POST /demo HTTP/1.1" 500 110 "-" "curl/7.35.0" 110