[CXF-2509] java.lang.reflect.GenericSignatureFormatError within JAXBContextInitializer

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.2.4
• Fix Version/s: 2.2.5
• Component/s: JAXB Databinding

Environment

jaxb-api-2.1.jar, jaxb-impl-2.1.11.jar

• Assignee: Daniel Kulp
• Reporter: Grzegorz Oledzki
• Created: 30/Oct/09 10:02
• Updated: 04/Dec/09 22:34
• Resolved: 30/Oct/09 16:28

Description

We have a bunch of web services started programmatically using:

JaxWsServerFactoryBean factory = new JaxWsServerFactoryBean();
factory.setServiceClass(serviceInterface);
factory.setServiceBean(serviceBean);
factory.setAddress(url);
...
factory.create();

Some of the services include a method which return type is generics:

public interface Service<DTO extends Entity<? extends Serializable>, QS extends QuerySummary> extends ... {
QueryResult<DTO, QS> read(Query query, UserId uc);
...
}

After upgrading CXF to version 2.2.4 they no longer start. The exception thrown is:

java.lang.reflect.GenericSignatureFormatError
	at sun.reflect.generics.parser.SignatureParser.error(SignatureParser.java:103)
	at sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignature(SignatureParser.java:233)
	at sun.reflect.generics.parser.SignatureParser.parseTypeArgument(SignatureParser.java:319)
	at sun.reflect.generics.parser.SignatureParser.parseTypeArguments(SignatureParser.java:284)
	at sun.reflect.generics.parser.SignatureParser.parseSimpleClassTypeSignature(SignatureParser.java:260)
	at sun.reflect.generics.parser.SignatureParser.parseClassTypeSignatureSuffix(SignatureParser.java:270)
	at sun.reflect.generics.parser.SignatureParser.parseClassTypeSignature(SignatureParser.java:244)
	at sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignature(SignatureParser.java:228)
	at sun.reflect.generics.parser.SignatureParser.parseTypeArgument(SignatureParser.java:319)
	at sun.reflect.generics.parser.SignatureParser.parseTypeArguments(SignatureParser.java:284)
	at sun.reflect.generics.parser.SignatureParser.parseSimpleClassTypeSignature(SignatureParser.java:260)
	at sun.reflect.generics.parser.SignatureParser.parseClassTypeSignatureSuffix(SignatureParser.java:270)
	at sun.reflect.generics.parser.SignatureParser.parseClassTypeSignature(SignatureParser.java:244)
	at sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignature(SignatureParser.java:228)
	at sun.reflect.generics.parser.SignatureParser.parseTypeSignature(SignatureParser.java:359)
	at sun.reflect.generics.parser.SignatureParser.parseTypeSig(SignatureParser.java:157)
	at sun.reflect.generics.repository.FieldRepository.parse(FieldRepository.java:34)
	at sun.reflect.generics.repository.FieldRepository.parse(FieldRepository.java:24)
	at sun.reflect.generics.repository.AbstractRepository.<init>(AbstractRepository.java:56)
	at sun.reflect.generics.repository.FieldRepository.<init>(FieldRepository.java:30)
	at sun.reflect.generics.repository.FieldRepository.make(FieldRepository.java:48)
	at java.lang.reflect.Field.getGenericInfo(Field.java:85)
	at java.lang.reflect.Field.getGenericType(Field.java:223)
	at org.apache.cxf.jaxb.JAXBContextInitializer.walkReferences(JAXBContextInitializer.java:288)
	at org.apache.cxf.jaxb.JAXBContextInitializer.addClass(JAXBContextInitializer.java:244)
	at org.apache.cxf.jaxb.JAXBContextInitializer.begin(JAXBContextInitializer.java:151)
	at org.apache.cxf.service.ServiceModelVisitor.visitOperation(ServiceModelVisitor.java:109)
	at org.apache.cxf.service.ServiceModelVisitor.walk(ServiceModelVisitor.java:74)
	at org.apache.cxf.jaxb.JAXBDataBinding.initialize(JAXBDataBinding.java:322)
	at org.apache.cxf.service.factory.ReflectionServiceFactoryBean.buildServiceFromClass(ReflectionServiceFactoryBean.java:398)
	at org.apache.cxf.jaxws.support.JaxWsServiceFactoryBean.buildServiceFromClass(JaxWsServiceFactoryBean.java:525)
	at org.apache.cxf.service.factory.ReflectionServiceFactoryBean.initializeServiceModel(ReflectionServiceFactoryBean.java:461)
	at org.apache.cxf.service.factory.ReflectionServiceFactoryBean.create(ReflectionServiceFactoryBean.java:212)
	at org.apache.cxf.jaxws.support.JaxWsServiceFactoryBean.create(JaxWsServiceFactoryBean.java:163)
	at org.apache.cxf.frontend.AbstractWSDLBasedEndpointFactory.createEndpoint(AbstractWSDLBasedEndpointFactory.java:100)
	at org.apache.cxf.frontend.ServerFactoryBean.create(ServerFactoryBean.java:117)
	at org.apache.cxf.jaxws.JaxWsServerFactoryBean.create(JaxWsServerFactoryBean.java:167)
	at com.xxx.ServiceServerFactory.create(ServiceServerFactory.java:53)

After some debugging (namely setting a breakpoint in JAXBContextInitializer.walkReferences) I could only observe that:

• under 2.2.3, the breakpoint was at JAXBContextInitializer.walkReferences:271, the f (Field) value is:

  private com.xxx.queryresult.QueryResult com.xxx.jaxws_asm.ReadResponse.queryResult
  

  and its f.signature is NULL

• under 2.2.4, the breakpoint was at JAXBContextInitializer.walkReferences:288, the f (Field) value is:

  private com.xxx.queryresult.QueryResult com.xxx.jaxws_asm.ReadResponse.queryResult
  

  which is the same, but its f.signature is very different:

  Lcom/xxx/queryresult/QueryResult<Lcom/xxx/DTOEntity<null>;Lcom/xxx/QuerySummary;>;