Spring Security authentication with Groovy Grails logout scenario

In this recipe, let's look at the logout implementation with Spring Security in the Grails application.

Getting ready

When we install the Spring Security plugin with Grails, the Login Controller and Logout Controller class will be created automatically. Login Controller will handle the authentication. The Logout Controller will handle the logout process, it will redirect the user to the common page.

How to do it…

The following steps are taken to implement the logout action in the Groovy on Grails application:

1. In the index.jsp file we add the following:

   <g:link controller='logout' action=''>Spring Logout</g:link>

2. The Logout Controller class to redirect the request to j_spring_security:

   import org.codehaus.groovy.grails.plugins.springsecurity.SpringSecurityUtils
   
   class LogoutController {
   
     /**
      * Index action. Redirects to the Spring security logout uri.
      */
     def index = {
       // TODO put any pre-logout code here
   ...