How to create a single executable war in spring boot

Question

We are working on spring cloud project using spring boot. Our goal is to create an executable war that can be run using java -jar .

I followed couple of posts on SO and was able to generate the executable war by 1) adding "boot" classifier tag in . 2) Adding Repackage goal in execution phase for spring-boot-maven-plugin

Now with this approach I'm getting two war files : one war that is not executable but just deployable and another war with boot classifier that suits my requirements

Is there a way to just generate only the executable war?

I'm attaching the pom.xml for easy reference

http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4.0.0

<artifactId>discovery-service</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>war</packaging>

<description>
    Discovery microservice to provide a service registry using Spring Cloud
    and Netflix Eureka for cloud native microservices.
</description>

<properties>
    <java.version>1.8</java.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <version>1.2.3.RELEASE</version>
            **<configuration>
                <classifier>boot</classifier>
            </configuration>
            <executions>
                <execution>
                    <goals>
                        <goal>repackage</goal>
                    </goals>
                </execution>
            </executions>**
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <version>2.6</version>
            <configuration>
                <failOnMissingWebXml>false</failOnMissingWebXml>
                <outputDirectory>target</outputDirectory>
                <warName>ROOT</warName>
            </configuration>
        </plugin>
    </plugins>
</build>

<dependencies>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-eureka-server</artifactId>
    </dependency>
</dependencies>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>Brixton.SR1</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-parent</artifactId>
            <version>Brixton.SR1</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

References: One Spring Boot project, deploy to both JAR or WAR

Failed to load Main-Class manifest attribute while running java -jar

Answer 1

Thanks to Stephane for suggesting to remove the classifier and for suggesting to use starter.io.

My original problem was I was getting two war files in the target:

1. Root.war and the other
2. discovery-service-boot.war

I guess, the devil was in the maven-war-plugin config. After I removed the xml tags for warName and outputDirectory, I'm getting the executable war.

I'm posting the final pom.xml to benifit others facing similar situation:

<?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>


    <artifactId>discovery-service</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <description>
        Discovery microservice to provide a service registry using Spring Cloud
        and Netflix Eureka for cloud native microservices.
    </description>

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>1.2.3.RELEASE</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.6</version>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Brixton.SR1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-parent</artifactId>
                <version>Brixton.SR1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
</project>