log4j:WARN No appenders could be found for logger (org.apache.chemistry.opencmis.client.bindings.spi.atompub.CmisAtomPubSpi). log4j:WARN Please initialize the log4j system properly. ERROR: 'prefix cannot be null or empty' Exception in thread "main" org.apache.chemistry.opencmis.commons.exceptions.CmisConnectionException: Cannot access http://localhost:8080/alfresco/cmisatom/c1280b5d-5fef-4070-9b41-e2c0713a3ccf/children?id=workspace%3...: null at org.apache.chemistry.opencmis.client.bindings.spi.http.HttpUtils.invoke(HttpUtils.java:224) at org.apache.chemistry.opencmis.client.bindings.spi.http.HttpUtils.invokePOST(HttpUtils.java:74) at org.apache.chemistry.opencmis.client.bindings.spi.atompub.AbstractAtomPubService.post(AbstractAtomPubService.java:566) at org.apache.chemistry.opencmis.client.bindings.spi.atompub.ObjectServiceImpl.createFolder(ObjectServiceImpl.java:161) at org.apache.chemistry.opencmis.client.runtime.SessionImpl.createFolder(SessionImpl.java:786) at org.apache.chemistry.opencmis.client.runtime.FolderImpl.createFolder(FolderImpl.java:129) at newFolderCreate.main(newFolderCreate.java:35) Caused by: javax.xml.bind.MarshalException - with linked exception: [com.sun.istack.internal.SAXException2: com.sun.istack.internal.SAXException2: prefix cannot be null or empty javax.xml.stream.XMLStreamException: prefix cannot be null or empty javax.xml.transform.TransformerException: com.sun.istack.internal.SAXException2: prefix cannot be null or empty javax.xml.stream.XMLStreamException: prefix cannot be null or empty] at com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.write(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.marshal(Unknown Source) at org.apache.chemistry.opencmis.commons.impl.JaxBHelper.marshal(JaxBHelper.java:130) at org.apache.chemistry.opencmis.client.bindings.spi.atompub.AtomEntryWriter.write(AtomEntryWriter.java:164) at org.apache.chemistry.opencmis.client.bindings.spi.atompub.ObjectServiceImpl$2.write(ObjectServiceImpl.java:163) at org.apache.chemistry.opencmis.client.bindings.spi.http.HttpUtils.invoke(HttpUtils.java:196) … 6 more Caused by: com.sun.istack.internal.SAXException2: com.sun.istack.internal.SAXException2: prefix cannot be null or empty javax.xml.stream.XMLStreamException: prefix cannot be null or empty javax.xml.transform.TransformerException: com.sun.istack.internal.SAXException2: prefix cannot be null or empty javax.xml.stream.XMLStreamException: prefix cannot be null or empty at com.sun.xml.internal.bind.v2.runtime.XMLSerializer.reportError(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.XMLSerializer.reportError(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.XMLSerializer.writeDom(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.property.ArrayReferenceNodeProperty.serializeListBody(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.property.ArrayERProperty.serializeBody(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.XMLSerializer.childAsXsiType(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.property.SingleElementNodeProperty.serializeBody(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.XMLSerializer.childAsXsiType(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.property.SingleElementNodeProperty.serializeBody(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.ElementBeanInfoImpl$1.serializeBody(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.ElementBeanInfoImpl$1.serializeBody(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.ElementBeanInfoImpl.serializeBody(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.ElementBeanInfoImpl.serializeRoot(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.ElementBeanInfoImpl.serializeRoot(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.XMLSerializer.childAsRoot(Unknown Source) … 12 more Caused by: javax.xml.transform.TransformerException: com.sun.istack.internal.SAXException2: prefix cannot be null or empty javax.xml.stream.XMLStreamException: prefix cannot be null or empty at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(Unknown Source) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(Unknown Source) … 27 more Caused by: com.sun.istack.internal.SAXException2: prefix cannot be null or empty javax.xml.stream.XMLStreamException: prefix cannot be null or empty at com.sun.xml.internal.bind.v2.runtime.XMLSerializer.attribute(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.ContentHandlerAdaptor.startElement(Unknown Source) at com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.closeStartTag(Unknown Source) at com.sun.org.apache.xml.internal.serializer.ToSAXHandler.flushPending(Unknown Source) at com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.startElement(Unknown Source) at com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.startElement(Unknown Source) at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(Unknown Source) at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(Unknown Source) at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(Unknown Source) at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(Unknown Source) at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(Unknown Source) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(Unknown Source) … 29 more Caused by: javax.xml.stream.XMLStreamException: prefix cannot be null or empty at com.sun.xml.internal.stream.writers.XMLStreamWriterImpl.writeAttribute(Unknown Source) at com.sun.xml.internal.bind.v2.runtime.output.XMLStreamWriterOutput.attribute(Unknown Source) … 41 more