issue merging content in nifi

[#1]

Hi,

I'm having trouble manipulating flow file content in nifi : i have a flow file which contains a json. I use one of the field of this json to make a http request, up to this point everything works fine. I would like to merge the answer of this request with my original json. The merge content processor doesn't seem appropriate so i'm kinda stuck.

Thank you in advance.

[#2]

Hi,

Can i know how you will write Nifi expression language for 5 fields of json that values coming from another processor.Suppose i have 40 fields in json and 25 having values but 15 fields does not have values/empty fields to it. But i will get the values for 15 fields from another processor and i want to append the values to the 15 empty fields of current json content. Please can you tell me the procedure to do it.

sample json file { "index": 1,

"index_start_at": 56,

"integer": 31,

"float": 11.8891,

"name": "Kyle",

"surname": "Ritchie",

"fullname": "Maria Kelley",

"email": "",

"bool": "" },

where email and bool fields are emptry/null , i want to add values from another processor.

How we achive it ..any steps and screenshots would be great .

[#3]

a bit more information : to make my http request, i used routeOnAttribute --> InvokeHttp which works fine

[#4]

@mclark

Thank you very much. Just to complete a bit your answer for those as new to nifi as i am :

- the invokeHttp processor must send the "original" to replaceText

- assuming the "Put Response Body in Attribute" property has been set to "Plouf"; the "Replacement Value" property in replaceText must be set to "${Plouf}"

[#5]

@Lubin Lemarchand you are correct. Thank you for filling in the details.