Wildfly 22 to 23: Getting "Java 8 date/time type `java.time.LocalDate` not supported by default"

[jpu...@noverant.com]

As the subject states, when moving from Wildfly 22 to Wildfly 23, my application is all of a sudden throwing this error when trying to serialize Java 8 LocalDate and LocalDateTime objects.

I added these lines to my `jboss-deployment-structure.xml` file, but it didn't seem to help:

<module name="com.fasterxml.jackson.datatype.jackson-datatype-jsr310" services="import" />
<module name="com.fasterxml.jackson.datatype.jackson-datatype-jdk8" services="import" />

Am I missing something? Did something change around RESTEasy/Jackson in Wildfly 23?

Regards,

Jonathan

[James Perkins]

Can you share your jboss-deployment-structure.xml? I can't seem to reproduce this.

[jpu...@noverant.com]

Here you go. Let me know if any other info would help.

[James Perkins]

Sorry, I forgot to set Jackson as the default provider. This does look like a regression in WildFly. I've filed an issue for this https://issues.redhat.com/browse/WFLY-14737.

[James Perkins]

To follow up on this it appears we're missing some documentation. To get this to work you need to add a provider which explicitly loads the JSR 310 module. In your deployment you can just add something like:

import javax.ws.rs.Produces;

import javax.ws.rs.core.MediaType;

import javax.ws.rs.ext.ContextResolver;

import javax.ws.rs.ext.Provider;

import com.fasterxml.jackson.databind.ObjectMapper;

import com.fasterxml.jackson.databind.json.JsonMapper;

@Provider

@Produces(MediaType.APPLICATION_JSON)

public class JacksonDatatypeJacksonProducer implements ContextResolver<ObjectMapper> {

    private final ObjectMapper json;

    public JacksonDatatypeJacksonProducer() throws Exception {

        this.json = JsonMapper.builder()

                .findAndAddModules()

                .build();

    }

    @Override

    public ObjectMapper getContext(Class<?> objectType) {

        return json;

    }

}

That should activate the JSR 310 serializer. You also don't need to include the dependencies in the jboss-deployment-structure.xml.

[Praveen 23]

Hi,

Where I need to add this class  JacksonDatatypeJacksonProducer in My project

Can you please share the path