create REST API in java and use in Bonita

i was trying to implement the api as you told me the last time , hence i decided to learn Groovy and since i knew java , picking up was not much of an issue ..
Now i want to show u something, i am trying to implement something like this

https://localhost:3000/api/user/2 and it should display the api on the json body

now my groovy rest api looks like this (Had to add jar files for mysql, bonita web extensions, slf4j-api) now my code looks somewhat like this :

package com.peopleInformation


// here i am trying to imitate something of this kind, no counters , nothing here is what the API should actually look like 
//https://localhost/userinformation.php?userId=150


import groovy.sql.Sql

import javax.servlet.http.HttpServletRequest

import org.bonitasoft.web.extension.rest.RestAPIContext
import org.bonitasoft.web.extension.rest.RestApiController
import org.bonitasoft.web.extension.rest.RestApiResponse
import org.bonitasoft.web.extension.rest.RestApiResponseBuilder
import org.slf4j.Logger
import org.slf4j.LoggerFactory

import groovy.json.JsonBuilder

class Index implements RestApiController{
    private static final Logger LOGGER = LoggerFactory.getLogger(Index.class)


    @Override
    public RestApiResponse doHandle(HttpServletRequest request, RestApiResponseBuilder responseBuilder, RestAPIContext context) {

        // Retrieve userId parameter
        def userId = request.getParameter "userId"
        if (userId == null) {
            return buildResponse(responseBuilder, HttpServletResponse.SC_BAD_REQUEST,"""{"error" : "the parameter userId is missing"}""")
        }

        userId = userId as int


        // Initialize the list to store users information

        def usersInformation = []

      // get user information from database
        def connection = Sql.newInstance('jdbc:mysql://localhost:3306/bonitasoft_json','root', '', 'com.mysql.jdbc.Driver')

        def resultSet = connection.rows('select * from people_data where userId = :userId',[userId:it.userId])

        def peopleInfo = [fullname : resultSet.fullname,position : resultSet.position,supervisor : resultSet.supervisor,supervisoremail :               resultSet.supervisoremail,perdiem:resultSet.perdiem]

            usersInformation << peopleInfo

        def result = [userId: userId, peopleInfo: usersInformation]
        return buildPagedResponse(responseBuilder, new JsonBuilder(result).toString())
    }


    RestApiResponse buildPagedResponse(RestApiResponseBuilder responseBuilder, Serializable body) {
        return responseBuilder.with {
            withResponse(body)
            build()
        }
    }
}

The trouble i have now is how i can create the pages.properties file and use the encoding. I am on a windows Machine and notepad++ and notepad wont allow me to do that ISO 8859-1 encoding.

just need some advise here and as regards to my code, am I on track?

Ok for the Record, i have been able to save the encoded file in ISO 8859-1 encoding i just used notepad++ and it appears to be fine now
now here is what i want to do, i am going to test and see what comes up with the REST API i created.
many thanks again