In this post, we'll take a look at Spring Boot properties. We'll learn what they are, how to configure them, and how they can be used to customize the behavior of Spring Boot applications.
Spring Boot properties are used to configure Spring Boot applications. They can be used to set values for various Spring Boot settings, such as the application name, server port, and so on.
Properties can be configured in a number of ways, such as in a properties file, via environment variables, or programmatically.
Spring Boot properties can be configured in a number of ways.
The most common way is to use a properties file. Spring Boot will look for a file called application.properties
in the classpath. This file can be used to override any of the default Spring Boot properties.
For example, the following application.properties
file would set the server port to 8080:
server.port=8080
Another way to configure Spring Boot properties is via environment variables. Spring Boot will look for environment variables that start with spring.
and use them to override any corresponding properties.
For example, the following environment variable would set the server port to 8080:
spring.server.port=8080
Finally, Spring Boot properties can also be configured programmatically. This can be done by creating a @Configuration
class and using the @ConfigurationProperties
annotation.
For example, the following @Configuration
class would map the server.port
property to a serverPort
field:
@Configuration
@ConfigurationProperties(prefix="server")
public class ServerConfig {
private int port;
public int getPort() {
return port;
}
public void setPort(int port) {
this.port = port;
}
}
Spring Boot properties can be used to customize the behavior of Spring Boot applications.
For example, the spring.main.banner-mode
property can be used to disable the Spring Boot banner:
spring.main.banner-mode=off
The spring.jpa.show-sql
property can be used to enable SQL logging for JPA:
spring.jpa.show-sql=true
The spring.thymeleaf.cache
property can be used to enable Thymeleaf template caching:
spring.thymeleaf.cache=true
And so on.
In this post, we've learned about Spring Boot properties. We've seen how to configure them, how they can be used to customize the behavior of Spring Boot applications, and where to find more information about them.