Is it possible to execute two different maven exec-maven-plugin in a single POM - maven

Question

I execute the following code using mvn exec:java com.mycompany.FooServer.
I would like to add another server which I can execute like mvn exec:java com.mycompany.BarServer.
How do I do that within a single pom file?
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<executions>
<execution>
<goals>
<goal>java</goal>
</goals>
</execution>
</executions>
<configuration>
<mainClass>com.mycompany.FooServer</mainClass>
</configuration>
</plugin>
</build>

Answer 1

Try this. You can have more than one execution under executions. All you need to do is move the configuration element under the execution. The plugin has configuration, but each execution can also have a separate configuration element.
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<executions>
<execution>
<id>first-execution</id>
<goals>
<goal>java</goal>
</goals>
<configuration>
<mainClass>com.mycompany.FooServer</mainClass>
</configuration>
</execution>
<execution>
<id>second-execution</id>
<goals>
<goal>java</goal>
</goals>
<configuration>
<mainClass>com.mycompany.BarServer</mainClass>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
With Maven 3.3.1 and up, you can run an execution by its ID using
mvn exec:java#id
In this case the commands would be mvn exec:java#first-execution and mvn exec:java#second-execution. See this answer for more details.

Answer 2

#tieTYT: You can select the execution by id using two distinct profiles:
mvn test -Pmanager
mvn test -Pproxy
<profiles>
<profile>
<id>proxy</id>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<executions>
<execution>
<phase>test</phase>
<goals>
<goal>java</goal>
</goals>
<configuration>
<mainClass>pt.inesc.proxy.Proxy</mainClass>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>manager</id>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<executions>
<execution>
<phase>test</phase>
<goals>
<goal>java</goal>
</goals>
<configuration>
<mainClass>pt.inesc.manager.Manager</mainClass>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>

Answer 3

With maven > 3.3.1 it is possible to specify the execution id as:
mvn exec:java#execId

Answer 4

For me including configuration in the execution block didn't work and maven complained about main class not being set. But inspired by Dario's answer I'd answer this question as follows:
<profiles>
<profile>
<id>foo</id>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<mainClass>com.mycompany.FooServer</mainClass>
</configuration>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>bar</id>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<mainClass>com.mycompany.BarServer</mainClass>
</configuration>
</plugin>
</plugins>
</build>
</profile>
</profiles>
Which then allows you to run one or the other server using:
mvn exec:java -Pfoo
or
mvn exec:java -Pbar
Cheers,

Answer 5

I find the solution: I put <configuration> in <execution>
you can use mvn clean test -Pfoo,bar
<profiles>
<profile>
<id>foo</id>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.3.2</version>
<executions>
<execution>
<id>CountContinusIntegr-execution</id>
<phase>compile</phase>
<goals>
<goal>java</goal>
</goals>
<configuration>
<mainClass>com.mycompany.FooServer</mainClass>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>bar</id>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.3.2</version>
<executions>
<execution>
<id>CountContinusIntegr-execution</id>
<phase>compile</phase>
<goals>
<goal>java</goal>
</goals>
<configuration>
<mainClass>com.mycompany.BarServer</mainClass>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>

Answer 6

I'm afraid that what you want is not possible. I could not find a way to call the same exec-maven-plugin goal directly (mvn exec:java) with different configurations in .pom file.
Said that, you can however have multiple executions of exec-maven-plugin. The thing is you can not call the goals directly. You have to use multiple executions and bind them to particular build phases.
You could also make use of the following solution that fitted me. You can still call one goal directly with it's configuration in the .pom:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.3.2</version>
<executions>
<execution>
<id>Acceptance Tests</id>
<phase>integration-test</phase>
<goals>
<goal>exec</goal>
</goals>
<configuration>
<executable>pybot</executable>
<arguments>
<!--...-->
</arguments>
</configuration>
</execution>
</executions>
<configuration>
<mainClass>pt.jandias.someapp.persistence.SchemaGenerator</mainClass>
<arguments>
<!--...-->
</arguments>
</configuration>
</plugin>
One could than use mvn exec:java and mvn integration-test at will.