As we are using a MAVEN build, we have to configure the POM.xml for Spring Boot to identify the main class of the application. group 'ElasticMediaSearch' In this post of Spring Boot, we will learn how to configuring a main class in Spring Boot.We will look at the different options to tell Spring Boot which is the main class to use in the executable jar.. Introduction. Spring Boot main class start up the Spring ApplicationContext. My gradle build file looks like this. Below are the changes required in the POM.xml file (highlighted changes) That’s the point in which you can hook into Spring Boot initialization process. When I go to run my Spring Boot application using the little "Run" button, I get "Error: Could not find or load main class...". In this tutorial, we explore the basics of application.properties, @Value and @ConfigurationProperties. Creating Spring Boot hook. Why can't the runner start my application? 2.1. Start by changing the code in your main method to extract appending of startup hooks to a separate method. Spring Boot bootstrap or start the application using the main class. Externalizing Application Configuration is a key challenge in developing great Application. When I run my jar with the command line, it starts up correctly. Spring Boot allows us to define the Main class in the configuration when we have multiple main classes declared in the application. Spring Boot provides a variety of options to expose Application Configuration. Alternatively, the main class name can be configured project-wide using the mainClassName property of the Spring Boot DSL: springBoot { mainClassName = 'com.example.ExampleApplication' } 1 When Spring boot application starts: Here is what my settings look like. You should add Spring Boot hooks before the application is started. Spring Boot - Which main class to start; Maven - How to create a Java project; Spring Boot - Run code when the application starts; How to make a Java exe file …

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