Hello, Maybe you've already figure it out, but I think your AttributesToJSON processor's 'Destination' property is set to 'flowfile-attribute' (by default). If so, created JSON is written in 'JSONAttributes' attribute. If you'd like it to be as content of outgoing FlowFile, please use 'flowfile-content' instead.
For the 2nd question, you can concatenate attribute values with NiFi Expression Language "join" function. https://nifi.apache.org/docs/nifi-docs/html/expression-language-guide.html#join UpdateAttribute processor can be used to add concatenated attribute before AttributesToJSON. But I don't know if there's any EL function to join attribute name and value together. Join joins values only. Hope this helps, Koji On Wed, May 3, 2017 at 1:00 PM, Buntu Dev <[email protected]> wrote: > I'm trying to convert the output of the ExtractMediaMetaData to JSON using > AttributesToJSON processor but the result seems to be still binary of the > JPEG image. How do I convert the output of ExtractMediaMetaData to JSON? > > Also, there are some attributes such as "Blue Colorant", etc. How do I list > these attributes as comma-seperated list in the AttributesToJSON config? > > > Thanks!
