Executing Code on Startup of Spring Boot Application



In this tutorial, we will find how to execute a block of code on application startup.

Developers frequently need some startup code that needs to be executed once the application starts. This can be reading a set of configuration values from the database which will remain constant or execute some notification logic. Spring boot provides ApplicationRunner and CommandLineRunner interfaces to accomplish this task. 

 Spring boot also provides ApplicationArguments class which can be injected into any class that needs program argument values.

Find this project on Github

https://github.com/javacodenet/spring-boot-application-startup-code

pom.xml


Application.java


MyCommandLineRunner.java


MyApplicationRunner.java


Program arguments added


Output from MyCommandLineRunner


Output from MyApplicationRunner


Rest End Point Output


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