Save CSV content into mysql database using groovy

I'm trying to save csv file data into my mysql database table using groovy language. I'm new to this language, can anyone please help me in this?? below is piece of code I have written yet.

import groovy.sql.Sql

def sql = Sql.newInstance("jdbc:mysql://localhost:3306/csvdb",
  "root", "", "com.mysql.jdbc.Driver")
def users = sql.dataSet("USERS")
new File("C:\Users\lllha\Desktop\users.csv").splitEachLine(",") {fields ->
 users.add(
    first_name: fields[0],
    last_name: fields[1],
    age: field[2],
    gender: field[3],
    email: fields[4],
    phone: fields[5]
  )
}