How to get the particular array node from JSON and print one by one using groovy?

Question

I have the following JSON format :-

{
"id": "102",
"brand": "Disha",
"book": [{
    "slr": "EFTR",
    "description": "Grammer",
    "data": "TYR",
    "rate": true,
    "numberOfPages": 345,
    "maxAllowed": "12",
    "currentPage": 345
    },
    {
    "slr": "EFRE",
    "description": "English",
    "data": "TYR",
    "rate": true,
    "numberOfPages": 345,
    "maxAllowed": "12",
    "currentPage": 345
    },
    {
    "slr": "BGTR",
    "description": "French",
    "data": "TYR",
    "rate": true,
    "numberOfPages": 345,
    "maxAllowed": "12",
    "currentPage": 345
    }]
}

I want to write the groovy code to get the book array and print it one by one and before that I need to count the array node for book also.

I have tried below code:-

def response = context.expand( '${book#Response}' );
def slurper = new JsonSlurper();
String inputJSON = slurper.parseText(response)
def strFinalValueToRead = "\$." + "book[0]"
def strActualValue = parse(inputJSON).read(strFinalValueToRead).toString()

log.info strActualValue

I am getting error as

com.jayway.jsonpath.InvalidJsonException: net.minidev.json.parser.ParseException: Unexpected End Of File.

Any help would be appreciated.

Answer 1

You can use Script Assertion for the same REST Request test step which can avoid another additional groovy step.

Script Assertion

assert context.response, 'Response is empty or null'

def json = new groovy.json.JsonSlurper().parseText(context.response)
log.info json.book

The above logs all the book details.

You may also use index to show a particular book details such as show book at 0 index.

log.info json.book[0]

It is also find certain book based on some filter. For instance, find a book whose description is Grammer.

log.info json.book.find {it.description == 'Grammer'}

Answer 2

Map m = new groovy.json.JsonSlurper().parseText(json)
m.book.each{println it}

This is enough.

Answer 3

Finally, after so much effort. I got the solution and tried it with Map and List.

Object inputJSON = slurper.parseText(response)

def countBook = inputJSON.book.size()

for(int i=0; i<countBook; i++) {
Map result = (Map) inputJSON
List bookNode = result.get("book")
log.info bookNode[i]    

}