modifying json with jsonbuilder in Groovy

Question

I am trying to modify content of json and then print it to see if it has changed with this code but getting error

 def builder = new JsonBuilder(request)
 log.info(builder.content)
 builder.content.device.dpidsha1= 'abcd'  
 log.info(builder.toPrettyString())

error:

no such property: device

json looks like this:

{
   "app":{ },
   "at":2,
   "badv":[ ],
   "bcat":[ ],
   "device":{
      "carrier":"310-410",
      "connectiontype":3,
      "devicetype":1,
      "dnt":0,
      "dpidmd5":"268d403db34e32c45869bb1401247af9",
      "dpidsha1":"1234",
.
.
}

can someone help in understanding what am i doing wrong and how can i correct it.

MinosL · Accepted Answer · 2023-09-02 11:48:03Z

19

You need to parse incoming data, then modify it with JsonBuilder

import groovy.json.JsonBuilder
import groovy.json.JsonSlurper

def data = """
{
   "app":{ },
   "at":2,
   "badv":[ ],
   "bcat":[ ],
   "device":{
      "carrier":"310-410",
      "connectiontype":3,
      "devicetype":1,
      "dnt":0,
      "dpidmd5":"268d403db34e32c45869bb1401247af9",
      "dpidsha1":"1234" 
   }
}"""

def slurped = new JsonSlurper().parseText(data)
def builder = new JsonBuilder(slurped)
builder.content.device.dpidsha1 = 'abcd'  
println(builder.toPrettyString())

edited Sep 2, 2023 at 11:48

MinosL

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answered Sep 9, 2014 at 15:44

Opal

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12 Comments

Opal Over a year ago

Thanks! Whatever that means :)

Paweł Piecyk Over a year ago

@Opal: I didn't know about toPrettyString() before :)

Paweł Piecyk Over a year ago

Ah... you're right - so I'll vote up the question too ;)

StackEng2010 Over a year ago

Excellent so .content is the key here to modify this json.

Opal Over a year ago

@NaveenKumarNamachivayam builder.content refers to this method - correct, it has nothing to do with var content.

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