IllegalAccessError: class ModelResolver tried to access protected method AnnotatedMember.getAllAnnotations()

[CidTori]

In my project I have swagger-core:2.2.0 and jackson-databind:2.8.11.3, and I have an exception with the following root cause:

Caused by: java.lang.IllegalAccessError: class io.swagger.v3.core.jackson.ModelResolver tried to access protected method 'com.fasterxml.jackson.databind.introspect.AnnotationMap com.fasterxml.jackson.databind.introspect.AnnotatedMember.getAllAnnotations()' (io.swagger.v3.core.jackson.ModelResolver and com.fasterxml.jackson.databind.introspect.AnnotatedMember are in unnamed module of loader 'app')
	at io.swagger.v3.core.jackson.ModelResolver.resolve(ModelResolver.java:579)
	at org.springdoc.core.converters.PageableOpenAPIConverter.resolve(PageableOpenAPIConverter.java:91)
	at org.springdoc.core.converters.AdditionalModelsConverter.resolve(AdditionalModelsConverter.java:138)
	at org.springdoc.core.converters.PropertyCustomizingConverter.resolve(PropertyCustomizingConverter.java:58)
	at org.springdoc.core.converters.FileSupportConverter.resolve(FileSupportConverter.java:66)
	at org.springdoc.core.converters.ResponseSupportConverter.resolve(ResponseSupportConverter.java:77)
	at org.springdoc.core.converters.SchemaPropertyDeprecatingConverter.resolve(SchemaPropertyDeprecatingConverter.java:58)
	at org.springdoc.core.converters.PolymorphicModelConverter.resolve(PolymorphicModelConverter.java:63)
	at io.swagger.v3.core.converter.ModelConverterContextImpl.resolve(ModelConverterContextImpl.java:97)
	at io.swagger.v3.core.jackson.ModelResolver.resolve(ModelResolver.java:440)
	at org.springdoc.core.converters.PageableOpenAPIConverter.resolve(PageableOpenAPIConverter.java:91)
	at org.springdoc.core.converters.AdditionalModelsConverter.resolve(AdditionalModelsConverter.java:138)
	at org.springdoc.core.converters.PropertyCustomizingConverter.resolve(PropertyCustomizingConverter.java:58)
	at org.springdoc.core.converters.FileSupportConverter.resolve(FileSupportConverter.java:66)
	at org.springdoc.core.converters.ResponseSupportConverter.resolve(ResponseSupportConverter.java:77)
	at org.springdoc.core.converters.SchemaPropertyDeprecatingConverter.resolve(SchemaPropertyDeprecatingConverter.java:58)
	at org.springdoc.core.converters.PolymorphicModelConverter.resolve(PolymorphicModelConverter.java:63)
	at io.swagger.v3.core.converter.ModelConverterContextImpl.resolve(ModelConverterContextImpl.java:97)
	at org.springdoc.core.converters.ResponseSupportConverter.resolve(ResponseSupportConverter.java:69)
	at org.springdoc.core.converters.SchemaPropertyDeprecatingConverter.resolve(SchemaPropertyDeprecatingConverter.java:58)
	at org.springdoc.core.converters.PolymorphicModelConverter.resolve(PolymorphicModelConverter.java:63)
	at io.swagger.v3.core.converter.ModelConverterContextImpl.resolve(ModelConverterContextImpl.java:97)
	at io.swagger.v3.core.converter.ModelConverters.resolveAsResolvedSchema(ModelConverters.java:110)
	at org.springdoc.core.SpringDocAnnotationsUtils.extractSchema(SpringDocAnnotationsUtils.java:120)
	at org.springdoc.core.GenericResponseService.calculateSchema(GenericResponseService.java:500)
	at org.springdoc.core.GenericResponseService.buildContent(GenericResponseService.java:459)
	at org.springdoc.core.GenericResponseService.buildContent(GenericResponseService.java:440)
	at org.springdoc.core.GenericResponseService.buildApiResponses(GenericResponseService.java:532)
	at org.springdoc.core.GenericResponseService.buildApiResponses(GenericResponseService.java:394)
	at org.springdoc.core.GenericResponseService.build(GenericResponseService.java:158)
	at org.springdoc.api.AbstractOpenApiResource.calculatePath(AbstractOpenApiResource.java:458)
	at org.springdoc.api.AbstractOpenApiResource.calculatePath(AbstractOpenApiResource.java:616)
	at org.springdoc.webmvc.api.OpenApiResource.lambda$calculatePath$10(OpenApiResource.java:228)
	at java.base/java.util.Optional.ifPresent(Optional.java:183)
	at org.springdoc.webmvc.api.OpenApiResource.calculatePath(OpenApiResource.java:210)
	at org.springdoc.webmvc.api.OpenApiResource.lambda$getPaths$2(OpenApiResource.java:180)
	at java.base/java.util.Optional.ifPresent(Optional.java:183)
	at org.springdoc.webmvc.api.OpenApiResource.getPaths(OpenApiResource.java:159)
	at org.springdoc.api.AbstractOpenApiResource.getOpenApi(AbstractOpenApiResource.java:320)
	at org.springdoc.webmvc.api.OpenApiResource.openapiJson(OpenApiResource.java:134)
	at org.springdoc.webmvc.api.OpenApiWebMvcResource.openapiJson(OpenApiWebMvcResource.java:113)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:854)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:765)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
	... 97 common frames omitted

Indeed, we can see here, line 579, that ModelResolver calls getAllAnnotations, which is protected until jackson-databind:2.9 I think.
However, the README says that swagger-core is compatible with "Jackson 2.4.5 or greater".

[bedaHovorka]

It seems, that swagger-core version - 2.2.1 has same problem:

BTW - There are two null checks - first in swagger using protected method. And second in jackson. I mean, that call annotations() only is sufficient solution.

[bhumi7383]

Hi there,
I am facing same error with spring boot 1.4.4 and springdoc-openapi-ui.

[frantuma]

Thanks for reporting this, should be fixed in #4214 by reverting to deprecated AnnotatedMember.annotations()

[wolfch-elsevier]

So which Maven release do I need to specify to get this fix?
I found it:

<dependency>
    <groupId>io.swagger.core.v3</groupId>
    <artifactId>swagger-core</artifactId>
    <version>2.2.2</version>
</dependency>

Although not yet findable on Central, it can still be pulled.