

Table of Contents
1. Overview
This article is about spring boot yml properties example, we can manage spring boot configuration inapplication.properties
or application.yml
or application.yaml
file.
application.properties
or.yml
file should be available inside/resources
folder at root location. Here is a way to change the location ofapplication.properties
or.yml
file.- Here is a priority to consider by spring boot if all three file available in
/resources
folder.- application.properties (1st property)
- application.yml (2nd priority)
- application.yaml (3rd priority)
- Here are some advantages to use
application.yml
instead ofapplication.properties
file- Easy to read properties
- Convenient syntax to hierarchical format
- Let’s check here
application.properties
andapplication.yml
so we can differentiate between reading and convinces:
application.properties
spring.application.name=spring boot yml example spring.datasource.driverClassName=com.mysql.jdbc.Driver spring.datasource.url=jdbc:mysql://localhost/test server.port=9000
application.yml
spring: application: name: spring boot yml example datasource: driverClassName: com.mysql.jdbc.Driver url: jdbc:mysql://localhost/test server: port: 9000
We have developed example maven, here is spring boot Gradle example using application.properties
file, We can simply replace application.yml.
2. Example

spring boot yml properties example
2.1 pom.xml
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>spring-boot-example</groupId> <artifactId>spring-boot-yml-example</artifactId> <version>1.0-SNAPSHOT</version> <description>spring boot yml properties example</description> <packaging>jar</packaging> <!-- Inherit defaults from Spring Boot --> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.4.RELEASE</version> </parent> <properties> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies> <!-- Package as an executable jar --> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
2.2 application.yml
server: port: 8989 context-path: /demo spring: application: name: spring yaml example
2.3 SpringBootConfig
package com.javadeveloperzone; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.annotation.ComponentScan; /** * Created by JavaDeveloperZone on 06-05-2018. */ @SpringBootApplication @ComponentScan // Using a root package also allows the @ComponentScan annotation to be used without needing to specify a basePackage attribute public class SpringBootConfig { public static void main(String[] args) throws Exception { SpringApplication.run(SpringBootConfig.class, args); // it wil start application } }
2.4 HelloController
package com.javadeveloperzone.controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; /** * Created by JavaDeveloperZone on 06-05-2018. */ @RestController public class HelloController { @RequestMapping(value = "/hello") public String hello() { return "Spring boot YML Example"; } }
2.5 Output
Let’s run maven project : mvn spring-boot:run
. ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v1.5.4.RELEASE) 2018-05-06 17:39:29.010 INFO 68888 --- [main] com.javadeveloperzone.SpringBootConfig : Started SpringBootConfig in 6.506 seconds (JVM running for 42.699)
http://localhost:8989/demo/hello

spring boot yml properties example – output
3. References
4. Source Code
spring-boot-yaml-properties-example (173 KB)
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2 comments. Leave new
Your tutorials are really helpful for beginners like me, i am going through your tutorial.
Another best thing is your reference documentation section providing link for the documentation to get more knowledge.
Thanks for the the tutorial, please help create simple tutorials for each concepts as many as possible.
Thank you vema.
You can go through our tutorial article where our all blogs links are available with proper category.
https://javadeveloperzone.com/spring-boot/spring-boot-tutorial/