Groovy load .csv files

Question

How to read and import .csv file in groovy on grails. I have .csv file with data and
need to import in to db using user interface .

Answer 1

I prefer a slight tweak on the accepted answer: zip the columns and values together, as opposed to indexing each one by number. The result is slightly shorter code.

def sql = Sql.newInstance("jdbc:mysql://localhost:3306/mydb", "user", "pswd", "com.mysql.jdbc.Driver")
def people = sql.dataSet("PERSON")
def columns = ['first_name', 'last_name', 'email']
new File("users.csv").splitEachLine(",") {values ->
    people.add([columns, values].transpose().collectEntries())
}