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[[core-configGroovy]]
== Configuration and Customization

The Spring Security plugin's configuration is primarily managed within the `grails-app/conf/application.groovy` file, although an alternative is to house plugin configuration within `application.yml`. Default values are stored in the `grails-app/conf/DefaultSecurityConfig.groovy` file, with additional application-specific settings appended to `application.groovy` (or `application.yml`). This configuration structure involves merging default and custom values, giving precedence to application-specific settings.

=== Environment-Specific Configuration

This configuration approach accommodates environment-specific needs. For instance, during development, you might require less restrictive security rules compared to a production environment. To handle environment-specific parameters, utilize the `environments` block.

=== Property Prefix and Overrides

To distinguish these configuration properties from others in Grails or from different plugins, all the plugin-specific configuration properties begin with `grails.plugin.springsecurity`. When overriding these properties, ensure to use the `grails.plugin.springsecurity` prefix. For example:

[source, groovy]
----
grails.plugin.springsecurity.password.algorithm = 'bcrypt'
----

=== Integration with CXF Grails Plugin

If your application incorporates the CXF Grails plugin, it's crucial to arrange the dependencies correctly. Place the CXF dependency above the Spring Security plugin within the `dependencies` block, as shown below:

[source,groovy,subs="+attributes"]
----
dependencies {
    implementation 'org.grails.plugins:cxf:3.1.1'
    // CXF above security.
    implementation 'org.apache.grails:grails-spring-security:{revnumber}'
}
----