Christoph Dreis created JOHNZON-347:
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Summary: Mapper.writeArray() fails on JDK 17
Key: JOHNZON-347
URL: https://issues.apache.org/jira/browse/JOHNZON-347
Project: Johnzon
Issue Type: Bug
Components: Mapper
Affects Versions: 1.2.13
Reporter: Christoph Dreis
Hi,
I've noticed that Mapper.writeArray fails on JDK 17 due to
[https://openjdk.java.net/jeps/403] strongly encapsulating internals now. To
reproduce just run `JohnzonJsonbTest` with JDK 17 (build 25 at least to include
JEP 403). You will see stacktraces like the following:
```
java.lang.reflect.InaccessibleObjectException: Unable to make field private
final java.lang.Object[] java.util.Arrays$ArrayList.a accessible: module
java.base does not "opens java.util" to unnamed module
@4361bd48java.lang.reflect.InaccessibleObjectException: Unable to make field
private final java.lang.Object[] java.util.Arrays$ArrayList.a accessible:
module java.base does not "opens java.util" to unnamed module @4361bd48
at
java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
at
java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178) at
java.base/java.lang.reflect.Field.setAccessible(Field.java:172) at
org.apache.johnzon.mapper.access.FieldAccessMode$FieldDecoratedType.<init>(FieldAccessMode.java:105)
at
org.apache.johnzon.mapper.access.FieldAccessMode$FieldReader.<init>(FieldAccessMode.java:169)
at
org.apache.johnzon.mapper.access.FieldAccessMode.doFindReaders(FieldAccessMode.java:49)
at
org.apache.johnzon.mapper.access.BaseAccessMode.findReaders(BaseAccessMode.java:82)
at
org.apache.johnzon.mapper.access.FieldAndMethodAccessMode.doFindReaders(FieldAndMethodAccessMode.java:68)
at
org.apache.johnzon.mapper.access.BaseAccessMode.findReaders(BaseAccessMode.java:82)
at
org.apache.johnzon.jsonb.JsonbAccessMode.findReaders(JsonbAccessMode.java:468)
at
org.apache.johnzon.mapper.access.KnownNotOpenedJavaTypesAccessMode.findReaders(KnownNotOpenedJavaTypesAccessMode.java:182)
at org.apache.johnzon.mapper.Mappings.createClassMapping(Mappings.java:475) at
org.apache.johnzon.mapper.Mappings.doFindOrCreateClassMapping(Mappings.java:437)
at
org.apache.johnzon.mapper.Mappings.findOrCreateClassMapping(Mappings.java:411)
at org.apache.johnzon.mapper.Mapper.isDeduplicateObjects(Mapper.java:202) at
org.apache.johnzon.mapper.Mapper.writeObjectWithGenerator(Mapper.java:196) at
org.apache.johnzon.mapper.Mapper.writeObject(Mapper.java:189) at
org.apache.johnzon.mapper.Mapper.writeObject(Mapper.java:217) at
org.apache.johnzon.mapper.Mapper.writeArray(Mapper.java:104) at
org.apache.johnzon.jsonb.JohnzonJsonb.toJson(JohnzonJsonb.java:390)
```
I didn't find a quick way to fix this, but let me know if I can help.
Cheers,
Christoph
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