Mysn is created as a mutiple module project. It is devided to
mysn-model-core,mysn-dao-core,mysn-service-core,and mysn-web-core
module.This article will show you how to create a multiple module
project with maven and eclipse.

System environment

• J2SE 5.0
• eclipse 3.1.1
  with wtp 1.0
  plugin.
• Maven 2.0

Create the mysn project

1. Set up a new eclipse workspace called mysn. I set the newly created
   workspace to "F:\myfile\mysn".
2. add the M2_REPO classpath by executing the following command:

   mvn -Declipse.workspace=F:\myfile\mysn eclipse:add-maven-repo

3. Open the command line shell and change to the newly created
   workspace directory.
4. Create a new maven project using the archetype plugin.Execute the
   following command in command line shell:

   mvn archetype:create -DgroupId=cn.org.mysn -DartifactId=mysn

5. Create a new simple project mysn inside the mysn workspace with
   eclipse (From the menu bar, select File >New >Project. Select
   Simple >Project). Eclipse will create a simple .project-file for
   your mysn project and you should be able to see the pom.xml-file.
6. Delete the src-folder and open the pom.xml-file to change the
   packaging of your parent project to pom

   <packaging>pom</packaging>

   
   

7. Inside the workspace directory and create some modules.

cd mysn
mvn archetype:create -DgroupId=cn.org.mysn.model.core -DartifactId=mysn-model-core
mvn archetype:create -DgroupId=cn.org.mysn.dao.core -DartifactId=mysn-dao-core
mvn archetype:create -DgroupId=cn.org.mysn.service.core -DartifactId=mysn-service-core
mvn archetype:create -DgroupId=cn.org.mysn.web.core -DartifactId=mysn-web-core 
   	     	     -DarchetypeArtifactId=maven-archetype-webapp

Note: the mysn-web-core module is created as a webapp
project.

8. Add the newly created modules to your parent pom.

<modules>
    <module>../mysn-model-core</module>
    <module>../mysn-dao-core</module>
    <module>../mysn-service-core</module>
    <module>../mysn-web-core</module>
</modules>

9. Add the parent to the POMs of the new modules:

<parent>
    <groupId>cn.org.mysn</groupId>
    <artifactId>mysn</artifactId>
    <version>1.0-SNAPSHOT</version>
</parent>

10. Add dependency from module1 to the mysn-dao-core:

<dependency>
	<groupId>cn.org.mysn.model.core</groupId>
	<artifactId>mysn-model-core</artifactId>
	<version>1.0-SNAPSHOT</version>
</dependency>

11. Add dependency from module1 to the mysn-service-core:

<dependency>
	<groupId>cn.org.mysn.dao.core</groupId>
	<artifactId>mysn-dao-core</artifactId>
	<version>1.0-SNAPSHOT</version>
</dependency>

12. Add dependency from module1 to the mysn-web-core:

<dependency>
	<groupId>cn.org.mysn.service.core</groupId>
	<artifactId>mysn-service-core</artifactId>
	<version>1.0-SNAPSHOT</version>
</dependency>

13. Install the project in your local repository and generate the
    eclipse files:

mvn install
mvn eclipse:eclipse

14. Open the command line shell and change to the mysn-web-core module
    directory.generate the eclipse file for mysn-web-core module.

    mvn -Dwtpversion=1.0 eclipse:eclipse 

reference

• Guide
  to using Eclipse with Maven 2.x
• Guide to
  Webapps
• Maven
  Eclipse plugin – WTP support