The problem seems to be the two nested <item> tags. When renaming the second
to <item2> everything works.
Unfortunately I do not have access to the XML serialization and therefore
cannot change the XML layout.
Ideas would be greatly appreciated.
Villemos wrote:
>
> I'm new to XStream and XML to POJO conversion, so this problem is properly
> quite simple and stupid.
>
> I have the following XML string;
>
> <response>
> <status_code>0</status_code>
> <result>
> <item>
> <fieldset>General information</fieldset>
> <description>General document information</description>
> <fields>
> <item>
> <name>Document Author</name>
> <value>John Doe</value>
> </item>
> <item>
> <name>Reference ID</name>
> <value>OSMV-OPMT-LOGI-RP-11-1402</value>
> </item>
> </fields>
> </item>
> </result>
> </response>
>
>
> And have created the following classes;
>
> @XStreamAlias("response")
> public class Metadata {
>
> public String status_code = "";
>
> @XStreamAlias("result")
> public List<MetadataItem> result = new ArrayList<MetadataItem>();
> }
>
>
> @XStreamAlias("item")
> public class MetadataItem {
>
> public String fieldset = "";
> public String description = "";
>
> @XStreamAlias("fields")
> public List<MetadataField> fields = new ArrayList<MetadataField>();
> }
>
>
> @XStreamAlias("item")
> public class MetadataField {
>
> public String name = "";
> public String value = "";
> }
>
>
>
>
> Running the following junit tests fails misserably;
>
> public class MetadataTest extends TestCase {
>
> public void testConvert() {
> String testString = ...
>
> Metadata metadata = new Metadata();
> XStream xstream = new XStream();
> xstream.processAnnotations(MetadataField.class);
> xstream.processAnnotations(MetadataItem.class);
> xstream.processAnnotations(Metadata.class);
> xstream.fromXML(testString, metadata);
> }
> }
>
>
>
>
> The trace is shown below. I dont understand the error message; It looks
> like its in the MetadataField:name conversion that something goes wrong,
> but thats a String. How can a CannotResolveClassException be thrown?
>
>
>
> com.thoughtworks.xstream.converters.ConversionException: name : name :
> name : name
> ---- Debugging information ----
> message : name : name
> cause-exception :
> com.thoughtworks.xstream.mapper.CannotResolveClassException
> cause-message : name : name
> class : com.logica.oam.ktree.converters.Metadata
> required-type : com.logica.oam.ktree.converters.MetadataItem
> path : /response/result/item/fields/item/name
> line number : 1
> -------------------------------
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:88)
> at
> com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:55)
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:75)
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:59)
> at
> com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.readItem(AbstractCollectionConverter.java:77)
> at
> com.thoughtworks.xstream.converters.collections.CollectionConverter.populateCollection(CollectionConverter.java:68)
> at
> com.thoughtworks.xstream.converters.collections.CollectionConverter.unmarshal(CollectionConverter.java:61)
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:81)
> at
> com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:55)
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:75)
> at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:234)
> at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:206)
> at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:150)
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:81)
> at
> com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:55)
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:75)
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:59)
> at
> com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.readItem(AbstractCollectionConverter.java:77)
> at
> com.thoughtworks.xstream.converters.collections.CollectionConverter.populateCollection(CollectionConverter.java:68)
> at
> com.thoughtworks.xstream.converters.collections.CollectionConverter.unmarshal(CollectionConverter.java:61)
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:81)
> at
> com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:55)
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:75)
> at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:234)
> at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:206)
> at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:150)
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:81)
> at
> com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:55)
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:75)
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:59)
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:142)
> at
> com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:33)
> at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:931)
> at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:917)
> at com.thoughtworks.xstream.XStream.fromXML(XStream.java:889)
> at com.thoughtworks.xstream.XStream.fromXML(XStream.java:879)
> at
> com.logica.oam.ktree.converters.MetadataTest.testConvert(MetadataTest.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 junit.framework.TestCase.runTest(TestCase.java:168)
> at junit.framework.TestCase.runBare(TestCase.java:134)
> at junit.framework.TestResult$1.protect(TestResult.java:110)
> at junit.framework.TestResult.runProtected(TestResult.java:128)
> at junit.framework.TestResult.run(TestResult.java:113)
> at junit.framework.TestCase.run(TestCase.java:124)
> at junit.framework.TestSuite.runTest(TestSuite.java:232)
> at junit.framework.TestSuite.run(TestSuite.java:227)
> at
> org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
> at
> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
> 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:
> name : name
> at
> com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:62)
> at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
> at
> com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:71)
> at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
> at
> com.thoughtworks.xstream.mapper.ClassAliasingMapper.realClass(ClassAliasingMapper.java:86)
> at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
> at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
> at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
> at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
> at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
> at
> com.thoughtworks.xstream.mapper.ArrayMapper.realClass(ArrayMapper.java:87)
> at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
> at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
> at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
> at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
> at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
> at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
> at
> com.thoughtworks.xstream.mapper.CachingMapper.realClass(CachingMapper.java:52)
> at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.determineType(AbstractReflectionConverter.java:318)
> at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:196)
> at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:150)
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:81)
> ... 54 more
>
>
--
View this message in context:
http://old.nabble.com/Getting-CannotResolveClassException-in-simple-XML2POJO-example-tp33308266p33310167.html
Sent from the xstream - user mailing list archive at Nabble.com.
---------------------------------------------------------------------
To unsubscribe from this list, please visit:
http://xircles.codehaus.org/manage_email
