[RESOLVIDO] Como pegar uma lista usando o método GET e Vraptor?

This message was edited 1 time. Last update was at 21/12/2011 08:58:07

Olá pessoal,

Eu estou tentando recuperar uma lista de itens de um determinado objeto, mas sempre dá erro no parse do Xstream. Tentei diversas opções com base nesses arquivos de exemplo e mesmo assim, nada. Me senti confuso seguindo esses arquivos, pra falar a verdade.

Tenho a seguinte configuração:

E o controlador:

E então eu tenho a classe de teste...

Só que no ponto que eu tento pegar o resource (response.getResource()) está dando o seguinte erro:

com.thoughtworks.xstream.converters.ConversionException: servicoCobertoDto : servicoCobertoDto : servicoCobertoDto : servicoCobertoDto
---- Debugging information ----
message : servicoCobertoDto : servicoCobertoDto
cause-exception : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message : servicoCobertoDto : servicoCobertoDto
class : br.com.scmba.servico.lancamento.item.conta.genhio.dto.ServicoCobertoDto
required-type : br.com.scmba.servico.lancamento.item.conta.genhio.dto.ServicoCobertoDto
path : /servicos/servicoCobertoDto
line number : 2
-------------------------------
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:89)
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:60)
at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:137)
at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:33)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:923)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:909)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:853)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:845)
at br.com.caelum.restfulie.mediatype.XmlMediaType.unmarshal(XmlMediaType.java:73)
at br.com.caelum.restfulie.http.apache.ApacheResponse.getResource(ApacheResponse.java:60)
at br.com.scmba.servico.lancamento.item.conta.util.ServicoItemCobrancaTest.shouldBeAbleToNavigateThroughLinks(ServicoItemCobrancaTest.java:37)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:2
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:69)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:4
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:292)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:3
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: com.thoughtworks.xstream.mapper.CannotResolveClassException: servicoCobertoDto : servicoCobertoDto
at com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:6
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:71)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.PackageAliasingMapper.realClass(PackageAliasingMapper.java:8
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.ClassAliasingMapper.realClass(ClassAliasingMapper.java:86)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.ArrayMapper.realClass(ArrayMapper.java:96)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.CachingMapper.realClass(CachingMapper.java:52)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.determineType(AbstractReflectionConverter.java:347)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:20
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:162)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)
... 36 more

Como poderia resolver esse problema? Alguém tem alguma sugestão?

De antemão, obrigado.

GUJ Hacker Membro desde: 08/07/2007 00:08:14 Mensagens: 6396 Offline

o problema é que o XStream talvez não saiba funcionar bem quando o elemento raiz é uma lista...

se você criar a uma classe no cliente:

e adicionar elas no xmlTypes deve funcionar...

JavaEvangelist Membro desde: 10/12/2004 09:36:35 Mensagens: 330 Offline

Olá Lucas, tudo bem?

Obrigado de antemão.

Fiz o que você recomendou e passou a dar outro erro:

com.thoughtworks.xstream.converters.ConversionException: idServico : idServico : idServico : idServico
---- Debugging information ----
message : idServico : idServico
cause-exception : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message : idServico : idServico
class : br.com.scmba.servico.lancamento.item.conta.genhio.dto.Servicos
required-type : java.util.ArrayList
path : /servicos/servicoCobertoDto/idServico
line number : 3
-------------------------------
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:89)
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:246)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:21
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:162)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:60)
at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:137)
at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:33)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:923)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:909)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:853)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:845)
at br.com.caelum.restfulie.mediatype.XmlMediaType.unmarshal(XmlMediaType.java:73)
at br.com.caelum.restfulie.http.apache.ApacheResponse.getResource(ApacheResponse.java:60)
at br.com.scmba.servico.lancamento.item.conta.util.ServicoItemCobrancaTest.shouldBeAbleToNavigateThroughLinks(ServicoItemCobrancaTest.java:3
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:2
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:69)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:4
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:292)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:3
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: com.thoughtworks.xstream.mapper.CannotResolveClassException: idServico : idServico
at com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:6
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:71)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.PackageAliasingMapper.realClass(PackageAliasingMapper.java:8
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.ClassAliasingMapper.realClass(ClassAliasingMapper.java:86)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.ArrayMapper.realClass(ArrayMapper.java:96)
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:3
at com.thoughtworks.xstream.mapper.CachingMapper.realClass(CachingMapper.java:52)
at com.thoughtworks.xstream.core.util.HierarchicalStreams.readClassType(HierarchicalStreams.java:29)
at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.readItem(AbstractCollectionConverter.java:70)
at com.thoughtworks.xstream.converters.collections.CollectionConverter.populateCollection(CollectionConverter.java:6
at com.thoughtworks.xstream.converters.collections.CollectionConverter.unmarshal(CollectionConverter.java:61)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)
... 42 more

Criei a classe Servicos e adicionei aos testes:

Tentei seguir a sua lógica (criar um novo objeto com o nome Servicos) para tentar resolver esse erro e não consegui.
Sabe dizer o que estou fazendo de errado?

Obrigado.

GUJ Hacker Membro desde: 08/07/2007 00:08:14 Mensagens: 6396 Offline

como está sendo gerado o xml? posta aqui um exemplo por favor.

JavaEvangelist Membro desde: 10/12/2004 09:36:35 Mensagens: 330 Offline

Lucas,

Segue um exemplo do arquivo de retorno.

Pelo erro apresentado e a maneira como o XML está sendo gerado, penso que o erro está na geração do arquivo. Ou seja, ele deveria estar informando que o servicoCobertoDto faz parte de uma lista.

Será que o erro estaria aqui?

GUJ Hacker Membro desde: 08/07/2007 00:08:14 Mensagens: 6396 Offline

Tenta o seguinte, na classe Servicos:

JavaEvangelist Membro desde: 10/12/2004 09:36:35 Mensagens: 330 Offline

Lucas,

Funcionou! A sua sugestão de mudança deu certo, porém eu precisei mudar isso nos meus testes:

Ou seja, ao invés de retornar uma lista de ServicosCobertosDto, ele retorna um objeto Servicos com a lista dentro.

Muito obrigado pela sua ajuda.

Abraço!

Notícias, artigos e o maior fórum brasileiro sobre Java