Groovy file operations

write to file

def writeToFile(def id,def refno,def dest){

    String filePath="gendata/${dest}.csv";
    //check if file exists or not
    File file = new File(filePath)
    if(!file.exists())
    {
        File file2 = new File(filePath);
        file2.write "id,refno,dest\n";
        file2.append "$id,$refno,$dest\n";
    }else{
        //file exists append to it
        File file2 = new File(filePath);
        file2.append "$id,$refno,$dest\n";
    }
    
}

Groovy JSON manipulation

classes

import groovy.json.JsonSlurper;
import groovy.json.JsonOutput;

Read JSONObject

import groovy.json.JsonSlurper;
import groovy.json.JsonOutput;

//Parse the JOSN from the response
def jsonSlurper = new JsonSlurper();
def jsonObject = jsonSlurper.parseText(s);

//parse the user object
def user_id = jsonObject.user.id;
def city_id = jsonObject.user.cityId;
def hub_id = jsonObject.user.hubId;
def company_id = jsonObject.user.company.id;

//parse arrary
//get the number of contents:
int number_of_contents = jsonObject.content.size();
def content_id = jsonObject.content[0].id;
System.out.println("got id as"+content_id);

//remove the key
jsonobj.remove("nodename")

Output json

def ax= JsonOutput.toJson(jsonObject);
System.out.println(ax);