Enum serialization error with Java 17

[Berger Dénes]

I have created a test scenario, with an enum and a class with a field typed to this enum.

public enum SimpleEnum {
    ONE, TWO
}

(...)

public class SimpleClass {
    private final String name;
    private final SimpleEnum myEnum;

    public SimpleClass(String name, SimpleEnum myEnum) {
        this.name = name;
        this.myEnum = myEnum;
    }

    public String getName() {
        return name;
    }

    public SimpleEnum getMyEnum() {
        return myEnum;
    }
}

When I try to serialize this class with Java 17, the enum value is serialized to null

SimpleClass mc = new SimpleClass("MyName", SimpleEnum.ONE);
System.out.println(JsonWriter.objectToJson(mc));

output:
{"@type":"myPackage.SimpleClass","name":"MyName","myEnum":{"name":null}}

[wang wei]

#156
maybe this help? i try to set this : "--illegal-access=deny" on jvm parameters, it works, the same between jdk11 and jdk17

[Berger Dénes]

#156 maybe this help? i try to set this : "--illegal-access=deny" on jvm parameters, it works, the same between jdk11 and jdk17

OpenJDK 64-Bit Server VM warning: Ignoring option --illegal-access=deny; support was removed in 17.0
And it does not work either.

[John DeRegnaucourt]

Recent fixes to include serialization of Enums were added and included in json-io 4.14.0. Please let me know if that corrects this issue for you.

[Berger Dénes]

It works now but too late, moved away from this lib to Jackson last July