reaper-maven-plugin
Maven plugin that can do System.exit(0) on HTTP request
Usage
With pom.xml
 
<plugin>
    <groupId>com.github.fluorumlabs</groupId>
    <artifactId>reaper-maven-plugin</artifactId>
    <version>1.0.1</version>
    <executions>
        <execution>
            <goals><goal>kill</goal></goals>
        </execution>
    </executions>
    <!--configuration>
        <port>8989</port>
    </configuration-->
</plugin> 
Then, if maven is started with mvn reaper:kill jetty:run, any HTTP request to http://localhost:8989 will terminate the process.
Without pom.xml
 
It is possible to invoke plugin without making any changes to pom.xml:
mvn com.github.fluorumlabs:reaper-maven-plugin:kill jetty:run [-Dreaper.port=8989]
 JarCasting
 JarCasting