Authenticated Twitter Request

twitter.groovy

import groovy.json.*

def bearerToken
slurper = new JsonSlurper()

def getToken() {
    def twigglerKey = 'enter-key-here'
    def twigglerSecret = 'enter-secret-here'

    def encodedToken = URLEncoder.encode(twigglerKey) + ':' + URLEncoder.encode(twigglerSecret)
    encodedToken = new String(Base64.encoder.encode(encodedToken.bytes))
    def connection = new URL('https://api.twitter.com/oauth2/token').openConnection()
    connection.setRequestProperty('Content-Type', 'application/x-www-form-urlencoded;charset=UTF-8')
    connection.setRequestProperty('Authorization', 'Basic ' + encodedToken)
    connection.method = 'POST'
    connection.doOutput = true
    connection.outputStream.withStream { it << 'grant_type=client_credentials'.bytes }
    def json
    connection.inputStream.withStream { json = slurper.parseText(it.text) }
    return json."access_token"
}

bearerToken = getToken()

def connection = new URL('https://api.twitter.com/1.1/search/tweets.json?q=%40twitterapi').openConnection()
connection.setRequestProperty('Authorization', 'Bearer ' + bearerToken)
def response
connection.inputStream.withStream { response = slurper.parseText(it.text) }
println response