We can configure Spring beans using several methods in Grails. We can for example add them to grails-app/conf/spring/resources.xml using Spring’s XML syntax. But we can also use a more Groovy way with grails-app/conf/spring/resources.groovy. We can use a DSL to define or configure Spring beans that we want to use in our Grails application. Grails uses BeanBuilder to parse the DSL and populate the Spring application context. To define a bean we use the following syntax beanName(BeanClass). If we want to set a property value for the bean we use a closure and in the closure we set the property values. Let’s first create a simple class we want to configure in the Spring application context:

// File: src/groovy/com/mrhaki/spring/Person.groovy
package com.mrhaki.spring

import groovy.transform.ToString

@ToString
class Person {
    String name
    Date birthDate
}

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