groovy.sql.Sql Springboot cli

I'm attempting to create a small Springboot application that uses the groovy.sql.Sql class to connect to an Oracle database(the Oracle jar has already been grabbed and is in the spring boot classpath). This is a very simple example for proof of concept/testing.

import groovy.sql.Sql

@RestController 
class ThisWillActuallyRun {

   @RequestMapping("/")
   String home() {
     oracleSql = Sql.newInstance(jdbc:oracle:thin:@oracle-db:1521:db-name,
                                "oracle-user",
                                "oracle-pass",
                                "oracle.jdbc.driver.OracleDriver")

     row = oracleSql.firstRow("select foo from blah")
     return "ok"
   }
}

When the application is ran using the command:

spring run test_for_so.groovy

The following error is produced:

startup failed:
file:test_for_so.groovy: 1: unable to resolve class groovy.sql.Sql  @ line 1, column 1.
   import groovy.sql.Sql