Spring Boot Cookbook

Using the command-line runners

With our basic application skeleton ready, let's add some meat to the bones by making our application do something.

Let's start by first creating a class named StartupRunner. This will implement the CommandLineRunner interface, which basically provides just one method—public void run(String… args)—that will get called by Spring Boot only once after the application has started.

How to do it…

1. Create the file named StartupRunner.java under the src/main/java/org/test/bookpub/ directory from the root of our project with the following content:

   package org.test.bookpub; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.boot.CommandLineRunner; public class StartupRunner ...