ERROR org.apache.tomcat.jdbc.pool.ConnectionPool - Unable to create initial connections
of pool.
java.sql.SQLException: Unable to load class: org.postgresql.Driver from
ClassLoader:sun.misc.Launcher$AppClassLoader@18b4aac2;
ClassLoader:sun.misc.Launcher$AppClassLoader@18b4aac2

dataSource:
    pooled: true
    jmxExport: true
    driverClassName: org.postgresql.Driver
    username: root
    password: root

environments:
    development:
        dataSource:
            dbCreate: create-drop
            url: jdbc:postgresql://localhost:5432/supermercado
    test:
        dataSource:
            dbCreate: update
            url: jdbc:postgresql://localhost:5432/supermercado
    production:
        dataSource:
            dbCreate: update
            url: jdbc:postgresql://localhost:5432/supermercado
            properties:
                jmxEnabled: true
                initialSize: 5
                maxActive: 50
                minIdle: 5
                maxIdle: 25
                maxWait: 10000
                maxAge: 600000
                timeBetweenEvictionRunsMillis: 5000
                minEvictableIdleTimeMillis: 60000
                validationQuery: SELECT 1
                validationQueryTimeout: 3
                validationInterval: 15000
                testOnBorrow: true
                testWhileIdle: true
                testOnReturn: false
                jdbcInterceptors: ConnectionState
                defaultTransactionIsolation: 2 # TRANSACTION_READ_COMMITTED

dependencies {
compile "org.springframework.boot:spring-boot-starter-logging"
compile "org.springframework.boot:spring-boot-autoconfigure"
compile "org.grails:grails-core"
compile "org.springframework.boot:spring-boot-starter-actuator"
compile "org.springframework.boot:spring-boot-starter-tomcat"
compile "org.grails:grails-dependencies"
compile "org.grails:grails-web-boot"
compile "org.grails.plugins:cache"
compile "org.grails.plugins:scaffolding"
compile "org.grails.plugins:hibernate4"
compile "org.hibernate:hibernate-ehcache"
compile "org.grails.plugins:spring-security-core:3.1.2"
compile "org.grails.plugins:postgresql-extensions:9.6"
//compile "org.grails.plugins:br-validation:0.3"
console "org.grails:grails-console"
profile "org.grails.profiles:web:3.1.4"
runtime "org.grails.plugins:asset-pipeline"
runtime "com.h2database:h2"
runtime "org.postgresql:postgresql:9.6-4211-jdbc41"
testCompile "org.grails:grails-plugin-testing"
testCompile "org.grails.plugins:geb"
testRuntime "org.seleniumhq.selenium:selenium-htmlunit-driver:2.47.1"
testRuntime "net.sourceforge.htmlunit:htmlunit:2.18"
}