CODEWITHSUNDEEP
jsongroovy
Wavyx
Wavyx

Reputation: 1745

Groovy - Convert object to JSON string

I'm pretty used to Grails converters, where you can convert any object to a JSON representation just like this (http://grails.org/Converters+Reference)

return foo as JSON

But in plain groovy, I cannot find an easy way to do this (http://groovy-lang.org/json.html)

JSONObject.fromObject(this)

return empty json strings...

Am I missing an obvious Groovy converter ? Or should I go for jackson or gson library ?

Upvotes: 88

Views: 174496

Answers (3)

chim
chim

Reputation: 8573

I couldn't get the other answers to work within the evaluate console in Intellij so...

groovy.json.JsonOutput.toJson(myObject)

This works quite well, but unfortunately

groovy.json.JsonOutput.prettyString(myObject)

didn't work for me.

To get it pretty printed I had to do this...

groovy.json.JsonOutput.prettyPrint(groovy.json.JsonOutput.toJson(myObject))

Upvotes: 31

dhamibirendra
dhamibirendra

Reputation: 3046

You can use JsonBuilder for that.

Example Code:

import groovy.json.JsonBuilder

class Person {
    String name
    String address
}

def o = new Person( name: 'John Doe', address: 'Texas' )

println new JsonBuilder( o ).toPrettyString()

Upvotes: 12

tim_yates
tim_yates

Reputation: 171054

Do you mean like:

import groovy.json.*

class Me {
    String name
}

def o = new Me( name: 'tim' )

println new JsonBuilder( o ).toPrettyString()

Upvotes: 166

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