The SpringApplication class provides a convenient way to bootstrap a Spring Boot application that is started from a main() method. In many situations, you can delegate to the static SpringApplication.run method, as shown in the following example:
public static void main(String[] args) {
SpringApplication.run(MySpringConfiguration.class, args);
}
Startup information logging can be turned off by setting
spring.main.log-startup-info=false
This will also turn off logging of the application’s active profiles
** Customizing the Banner **
The banner that is printed on start up can be changed by adding a banner.txt file to your classpath or by setting the spring.banner.location property to the location of such a file. If the file has an encoding other than UTF-8, you can set spring.banner.charset. In addition to a text file, you can also add a banner.gif, banner.jpg, or banner.png image file to your classpath or set the spring.banner.image.location property. Images are converted into an ASCII art representation and printed above any text banner.
spring.main.banner-mode=off
spring.banner.location=classpath:custom-banner.txt
spring.banner.image.location=classpath:banner.gif
If the SpringApplication defaults are not to your taste, you can instead create a local instance and customize it. For example, to turn off the banner, you could write:
public static void main(String[] args) {
SpringApplication app = new SpringApplication(MySpringConfiguration.class);
app.setBannerMode(Banner.Mode.OFF);
app.run(args);
}
Here is the custom banner we will create
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|L| |e| |a| |r| |n| |i| |n| |g| |S| |p| |r| |i| |n| |g| |B| |o| |o| |t|
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Application Name: learning-spring-boot
Application Version: 0.0.1-SNAPSHOT
Spring Boot: (v2.4.5)
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Running the application
When you run the application from IDE's like eclipse or IntelliJ you won't be able to see all the new properties added to the banner.txt file, Application Name and Application Version. To see the new properties you have to package and run the application through console so that MANIFEST.MF is created. MANIFEST.MF file has values for the additional fields we added to the banner.txt file.
$ mvn package
$ java -jar .\target\learning-spring-boot-0.0.1-SNAPSHOT.jar