Maven exec plugin execution conundrum - maven

Question

Sample maven build file:
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>test</groupId>
<artifactId>test</artifactId>
<version>1.0.0</version>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
<execution>
<id>my-validation-one</id>
<phase>validate</phase>
<goals>
<goal>exec</goal>
</goals>
</execution>
</executions>
<configuration>
<executable>echo</executable>
<arguments>
<argument>"My validation one"</argument>
</arguments>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
<execution>
<id>my-validation-two</id>
<phase>validate</phase>
<goals>
<goal>exec</goal>
</goals>
</execution>
</executions>
<configuration>
<executable>echo</executable>
<arguments>
<argument>"My validation two"</argument>
</arguments>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
</dependencies>
</project>
Sample maven output:
$ mvn install
/cygdrive/c/Program Files/Java/jdk1.5.0_20/bin/java -classpath C:\Program Files\Apache Software Foundation\apache-maven-2.2.1/boot/classworlds-1.1.jar -Dclassworlds.conf=C:\Program Files\Apache Software Foundation\apache-maven-2.2.1/bin/m2.conf -Dmaven.home=C:\Program Files\Apache Software Foundation\apache-maven-2.2.1 org.codehaus.classworlds.Launcher "install"
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building Unnamed - test:test:jar:1.0.0
[INFO] task-segment: [install]
[INFO] ------------------------------------------------------------------------
[INFO] [exec:exec {execution: my-validation-one}]
[INFO] "My validation two"
[INFO] [exec:exec {execution: my-validation-two}]
[INFO] "My validation two"
[INFO] [resources:resources {execution: default-resources}]
<snip>
Shouldn't my-validation-one echo "My validation one" to the console? Why does it seem like maven is getting its wires crossed?
Thanks,
Steven

Answer 1

You should put the configuration specific to the execution within the execution block. Then it should work correctly.
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
<execution>
<id>my-validation-two</id>
<phase>validate</phase>
<goals>
<goal>exec</goal>
</goals>
<configuration>
<executable>echo</executable>
<arguments>
<argument>"My validation two"</argument>
</arguments>
</configuration>
</execution>
</executions>
</plugin>
Also, if both the executions are bound to same phase and goal, you can combine then within executions block instead of declaring the plugin twice.