topic Re: TypeConversionException in Alfresco Forum

TypeConversionException

sumalatha — Tue, 18 Aug 2020 08:18:49 GMT

Hi,

I am trying to create a document in alfresco with metadata. taking the file and metadata info from a json file.

while creating noderef for that in webscript getting the below error,

org.alfresco.service.cmr.repository.datatype.TypeConversionException: There is no conversion registered for the value:
value class: com.fasterxml.jackson.databind.node.TextNode
to class: java.lang.String

can anyone help please.

Thanks,

Re: TypeConversionException

kaynezhang — Tue, 18 Aug 2020 09:19:47 GMT

Could you please paste your code here ?

Re: TypeConversionException

sumalatha — Tue, 18 Aug 2020 10:11:15 GMT

Hi kaynezhang,

//getting the filename, docType and metadata as a jsonString

props.put(ContentModel.PROP_NAME, fileName);

ObjectMapper objectMapper = new ObjectMapper();
JsonNode jsonnode = objectMapper.readTree(metadata);
Iterator<String> fieldNames=jsonnode.fieldNames();
      while(fieldNames.hasNext()) {
      String paramName = fieldNames.next();
      QName reqDocPropQName = QName.resolveToQName(serviceRegistry.getNamespaceService(), paramName);

      props.put(reqDocPropQName, (Serializable) jsonnode.get(paramName));
 }

// use the node service to create a new node
QName reqDocContentQName = QName.resolveToQName(serviceRegistry.getNamespaceService(), docType);

docNodeRef = serviceRegistry.getNodeService().createNode(descFolderNodeRef,
      ContentModel.ASSOC_CONTAINS,
      QName.createQName(NamespaceService.CONTENT_MODEL_1_0_URI,
            fileName), reqDocContentQName, props) .getChildRef();

Re: TypeConversionException

kaynezhang — Wed, 19 Aug 2020 02:39:11 GMT

Alfresco property class only support some common class ,for example

String、Boolean、Character、Number、Byte、Short、Long、Float、BigDecimal、InputStream and so on.

And some alfresco specified class ,for exmple

QName、NodeRef、ChildAssociationRef、MLText and so on.

It dose not support JsonNode,so you should change it to class as mentioned above before you set it to property map

If your reqDocPropQName is long ,you can change it to long like this jsonnode.get(paramName).asLong()

If it is String you can change it to String like this jsonnode.get(paramName).toString()