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$ mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-webapp -DarchetypeArtifactId=maven-archetype-webapp[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] >>> maven-archetype-plugin:2.2:generate (default-cli) @ standalone-pom >>>
[INFO] 
[INFO] <<< maven-archetype-plugin:2.2:generate (default-cli) @ standalone-pom <<<
[INFO] 
[INFO] --- maven-archetype-plugin:2.2:generate (default-cli) @ standalone-pom ---
[INFO] Generating project in Interactive mode
[INFO] Using property: groupId = com.mycompany.app
[INFO] Using property: artifactId = my-webapp
Define value for property 'version':  1.0-SNAPSHOT: : 
[INFO] Using property: package = com.mycompany.app
Confirm properties configuration:
groupId: com.mycompany.app
artifactId: my-webapp
version: 1.0-SNAPSHOT
package: com.mycompany.app
 Y: : 
[INFO] ----------------------------------------------------------------------------
[INFO] Using following parameters for creating project from Old (1.x) Archetype: maven-archetype-webapp:1.0
[INFO] ----------------------------------------------------------------------------
[INFO] Parameter: groupId, Value: com.mycompany.app
[INFO] Parameter: packageName, Value: com.mycompany.app
[INFO] Parameter: package, Value: com.mycompany.app
[INFO] Parameter: artifactId, Value: my-webapp
[INFO] Parameter: basedir, Value: /Users/jesper/dev/tmp
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] project created from Old (1.x) Archetype in dir: /Users/jesper/dev/tmp/my-webapp
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 8.837s
[INFO] Finished at: Tue Jan 31 07:44:27 PST 2012
[INFO] Final Memory: 7M/81M
[INFO] ------------------------------------------------------------------------
$ cd my-webapp/

Add plugin repository to pom.xml:

  <pluginRepositories>
    <pluginRepository>
      <id>apache.snapshots</id>
      <name>Apache Snapshots</name>
      <url>https://repository.apache.org/content/groups/snapshots-group/</url>
      <releases>
        <enabled>false</enabled>
      </releases>
      <snapshots>
        <enabled>true</enabled>
      </snapshots>
    </pluginRepository>
  </pluginRepositories>

Add plugin to pom.xml:


    <plugins>
      <plugin>
        <groupId>org.apache.tomcat.maven</groupId>
        <artifactId>tomcat7-maven-plugin</artifactId>
        <version>2.0-SNAPSHOT</version>
        <executions>
          <execution>
            <id>tomcat-run</id>
            <goals>
              <goal>exec-war-only</goal>
            </goals>
            <phase>package</phase>
            <configuration>
              <path>/</path>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>

Now pom.xml looks like this:

$ cat pom.xml 
<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>com.mycompany.app</groupId>
  <artifactId>my-webapp</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>my-webapp Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <pluginRepositories>
    <pluginRepository>
      <id>apache.snapshots</id>
      <name>Apache Snapshots</name>
      <url>https://repository.apache.org/content/groups/snapshots-group/</url>
      <releases>
        <enabled>false</enabled>
      </releases>
      <snapshots>
        <enabled>true</enabled>
      </snapshots>
    </pluginRepository>
  </pluginRepositories>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
    <finalName>my-webapp</finalName>
    <plugins>
      <plugin>
        <groupId>org.apache.tomcat.maven</groupId>
        <artifactId>tomcat7-maven-plugin</artifactId>
        <version>2.0-SNAPSHOT</version>
        <executions>
          <execution>
            <id>tomcat-run</id>
            <goals>
              <goal>exec-war-only</goal>
            </goals>
            <phase>package</phase>
            <configuration>
              <path>/</path>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</project>

Build:


$ mvn package
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building my-webapp Maven Webapp 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-resources-plugin:2.4.3:resources (default-resources) @ my-webapp ---
[WARNING] Using platform encoding (MacRoman actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ my-webapp ---
[INFO] No sources to compile
[INFO] 
[INFO] --- maven-resources-plugin:2.4.3:testResources (default-testResources) @ my-webapp ---
[WARNING] Using platform encoding (MacRoman actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /Users/jesper/dev/tmp/my-webapp/src/test/resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.3.2:testCompile (default-testCompile) @ my-webapp ---
[INFO] No sources to compile
[INFO] 
[INFO] --- maven-surefire-plugin:2.7.2:test (default-test) @ my-webapp ---
[INFO] No tests to run.
[INFO] Surefire report directory: /Users/jesper/dev/tmp/my-webapp/target/surefire-reports

-------------------------------------------------------
 T E S T S
-------------------------------------------------------
There are no tests to run.

Results :

Tests run: 0, Failures: 0, Errors: 0, Skipped: 0

[INFO] 
[INFO] --- maven-war-plugin:2.1.1:war (default-war) @ my-webapp ---
[INFO] Packaging webapp
[INFO] Assembling webapp [my-webapp] in [/Users/jesper/dev/tmp/my-webapp/target/my-webapp]
[INFO] Processing war project
[INFO] Copying webapp resources [/Users/jesper/dev/tmp/my-webapp/src/main/webapp]
[INFO] Webapp assembled in [26 msecs]
[INFO] Building war: /Users/jesper/dev/tmp/my-webapp/target/my-webapp.war
[INFO] WEB-INF/web.xml already added, skipping
[INFO] 
[INFO] --- tomcat7-maven-plugin:2.0-SNAPSHOT:exec-war-only (tomcat-run) @ my-webapp ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.795s
[INFO] Finished at: Tue Jan 31 07:49:15 PST 2012
[INFO] Final Memory: 6M/81M
[INFO] ------------------------------------------------------------------------

Run:

$ java -jar target/my-webapp-1.0-SNAPSHOT-war-exec.jar 
Jan 31, 2012 7:49:45 AM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8080"]
Jan 31, 2012 7:49:45 AM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Tomcat
Jan 31, 2012 7:49:45 AM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.25
Jan 31, 2012 7:49:45 AM org.apache.catalina.startup.ContextConfig getDefaultWebXmlFragment
INFO: No global web.xml found
Jan 31, 2012 7:49:45 AM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8080"]
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