NullPointerException in io.swagger.v3.core.jackson.ModelResolver.getIgnoredProperties

[tangjwtj]

io.swagger.v3.core.jackson.ModelResolver.getIgnoredProperties does not check jackson return value.
In getIgnoredProperties method, assume jackson will not return null.

Set<String> ignored = introspector.findPropertyIgnorals(beanDescription.getClassInfo()).findIgnoredForSerialization();

But, In Jackson's implementation class AnnotationIntrospectorPair:

public Value findPropertyIgnorals(Annotated a) { Value v2 = this._secondary.findPropertyIgnorals(a); Value v1 = this._primary.findPropertyIgnorals(a); return v2 == null ? v1 : v2.withOverrides(v1); }

v1/v2 may be null.

The exception:
java.lang.NullPointerException: null
at io.swagger.v3.core.jackson.ModelResolver.getIgnoredProperties(ModelResolver.java:2002)
at io.swagger.v3.core.jackson.ModelResolver.resolve(ModelResolver.java:536)
at org.springdoc.core.converters.AdditionalModelsConverter.resolve(AdditionalModelsConverter.java:100)
at org.springdoc.core.converters.PropertyCustomizingConverter.resolve(PropertyCustomizingConverter.java:56)
at org.springdoc.core.converters.FileSupportConverter.resolve(FileSupportConverter.java:50)
at org.springdoc.core.converters.ResponseSupportConverter.resolve(ResponseSupportConverter.java:62)
at org.springdoc.core.converters.SchemaPropertyDeprecatingConverter.resolve(SchemaPropertyDeprecatingConverter.java:55)
at org.springdoc.core.converters.PolymorphicModelConverter.resolve(PolymorphicModelConverter.java:46)
at io.swagger.v3.core.converter.ModelConverterContextImpl.resolve(ModelConverterContextImpl.java:91)
at io.swagger.v3.core.converter.ModelConverters.resolveAsResolvedSchema(ModelConverters.java:117)

[frantuma]

Thanks for reporting this, null check added in #3674