How to create a Jar file from a Spring Boot Application using Maven
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In this article, we will learn how to create a JAR file from a Spring Boot application using Maven.
Introduction
The spring-boot-maven-plugin allows packaging a Spring Boot application as a JAR/WAR file. It needs to be specified in the project pom.xml along with the type of packaging (jar/war).
Project Creation and Setup
Step 1 – Let us use an existing project as a starting point. Clone the code from this Spring Boot Thymeleaf project.
Step 2 – Update the pom.xml to specify the packaging and the `spring-boot-maven-plugin` configuration. So the pom file should look as follows:
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.learnjava</groupId>
<artifactId>learnjava-springbootthymeleaf-demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.2.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Creating the JAR File
Execute the following Maven command:
mvn clean package
This creates the JAR file in the target directory of your project.
Further Reading
Conclusion
So to summarize, the spring-boot-maven-plugin can be used to create a Jar file from a Spring Boot Application using Maven.
