Category Archives: JSON

How to save list of JSON objects to Grails domain and render it?

To get JSON from request(POST) do following:

Request-type: POST

Request_data(JSON):[{

name : "TestName"

surname: "TestSurname"

}]

We can post JSON data from Postman REST client.

Domain:

class person{

String name;

String surname;

}

Controller:

import grails.converters.deep.JSON
import groovy.json.JsonSlurper

class PersonController{

def saveJsonToDomain(){

String jsonObject = request.getJSON();                                                                      // get JSON data from request body
println “jsonObject : ” + jsonObject;
def jsonList = new JsonSlurper().parseText(jsonObject);
println “jsonList.size() : ” + jsonList.size();
for(jsonObj in jsonList){
try{
Person person = new Person(jsonObj);
person.save(flush:true); // save JSON directly to grails domain
render person as JSON // render JSON object
}
catch(Exception e){
e.printStackTrace();
render “Error saving category : ” + e;
}
}

}

}

Don’t forget add the json data with same name as variable names in domain.


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