how to parse json using groovy

Question

I want to parse JSON data which is coming in like:

{    "212315952136472": {       "id": "212315952136472",       "name": "Ready",       "picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/195762_212315952136472_4343686_s.jpg",       "link": "http://www.hityashit.com/movie/ready",       "likes": 5,       "category": "Movie",       "description": "Check out the reviews of Ready on  http://www.hityashit.com/movie/ready"    } } 

The code I am using is:

JSONElement userJson = JSON.parse(jsonResponse) userJson.data.each {     Urls = it.link } 

But I am not able to get anything assigned to Urls. Any suggestions?

Answer 1

Have you tried using JsonSlurper?

Example usage:

def slurper = new JsonSlurper() def result = slurper.parseText('{"person":{"name":"Guillaume","age":33,"pets":["dog","cat"]}}')  assert result.person.name == "Guillaume" assert result.person.age == 33 assert result.person.pets.size() == 2 assert result.person.pets[0] == "dog" assert result.person.pets[1] == "cat" 

Answer 2

That response is a Map, with a single element with key '212315952136472'. There's no 'data' key in the Map. If you want to loop through all entries, use something like this:

JSONObject userJson = JSON.parse(jsonResponse) userJson.each { id, data -> println data.link } 

If you know it's a single-element Map then you can directly access the link:

def data = userJson.values().iterator().next() String link = data.link 

And if you knew the id (e.g. if you used it to make the request) then you can access the value more concisely:

String id = '212315952136472' ... String link = userJson[id].link