Different result by different profile activate method? - maven

Question

I have been using maven for about two years, but I don't think I understand profiles in maven exactly, especially when I encounter the following problem.
I have a maven project with three modules, secweb-parent, secweb-service and secweb-web, secweb-sevice depends on spring-webmvc, and secweb-web depends on secweb-service.
The problem is :
1) When I use 'mvn clean install -Dinclude', it works well, and spring-mvc.jar will be found in secweb-web.war
2) When I use 'mvn clean install -Pinclude-jar', it doesn't work, and spring-mvc.jar can't be found in secweb-web.war
Anybody know why ? And is there something I must pay attention to when I use profiles ?
(I know I can define scope of dependency, this project here just to demo different result of different profile activate method)
pom.xml for secweb-parent
<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>
<properties>
<project.version>1.0.0</project.version>
</properties>
<groupId>com.mediatek.dt</groupId>
<artifactId>secweb-parent</artifactId>
<version>${project.version}</version>
<packaging>pom</packaging>
<modules>
<module>../secweb-web</module>
<module>../secweb-service</module>
</modules>
</project>
pom.xml for secweb-service
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.mediatek.dt</groupId>
<artifactId>secweb-parent</artifactId>
<version>${project.version}</version>
<relativePath>../secweb-parent</relativePath>
</parent>
<artifactId>secweb-service</artifactId>
<profiles>
<profile>
<id>include-jar</id>
<activation>
<property>
<name>include</name>
</property>
</activation>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>2.5</version>
</dependency>
</dependencies>
</profile>
</profiles>
</project>
pom.xml for secweb-web
<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>
<parent>
<groupId>com.mediatek.dt</groupId>
<artifactId>secweb-parent</artifactId>
<version>${project.version}</version>
<relativePath>../secweb-parent</relativePath>
</parent>
<artifactId>secweb-web</artifactId>
<packaging>war</packaging>
<dependencies>
<dependency>
<groupId>com.mediatek.dt</groupId>
<artifactId>secweb-service</artifactId>
<version>${project.version}</version>
</dependency>
</dependencies>
</project>

Answer 1

You mat check the active profile by using the Maven Help Plugin as the following example
change directory to the parent
e.g. cd /my/project/secweb-parent
Then execute the following command twice for comparing
mvn help:help:active-profiles
mvn help:help:active-profiles -Pinclude-jar
Anyhow the significant point is the version, you have defined as 1.0.0. I would prefer to use the 1.0.0-SNAPSHOT instead.
You may see further information about the SNAPSHOT, here.
Why would you use this? SNAPSHOT versions are used for projects under active development. If your project depends on a software component that is under active development, you can depend on a SNAPSHOT release, and Maven will periodically attempt to download the latest snapshot from a repository when you run a build. Similarly, if the next release of your system is going to have a version "1.4", your project would have a version "1.4-SNAPSHOT" until it was formally released.
As a default setting, Maven will not check for SNAPSHOT releases on remote repositories. To depend on SNAPSHOT releases, users must explicitly enable the ability to download snapshots using a repository or pluginRepository element in the POM.
There is also a useful question and answer about the snapshot at our stackoverflow, here as well.
I hope this may help.