How to build project with Maven

To build a Maven based project, open your console, change to your project folder where pom.xml file is placed, and issue this command :

mvn package

This will execute the Maven “package” phase.

Maven build lifecycle
Maven is run by phases, read this default Maven build lifecycle article for more detail. So, when the “package” phase is executed, all its above phases – “validate“, “compile” and “test“, including the current phase “package” will be executed orderly.

“mvn package” example

When you run “mvn package” command, it will compile source code, run unit test and pack it depends on your “packaging” tag in pom.xml file. For example,

1. If “packaging” = jar, it will package your project into a “jar” file and put it into your target folder

File : pom.xml

<project ...>
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.mkyong</groupId>
	<artifactId>Maven Example</artifactId>
	<packaging>jar</packaging>
	...

2. If “packaging” = war, it will package your project into a “war” file and put it into your target folder.

File : pom.xml

<project ...>
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.mkyong</groupId>
	<artifactId>Maven Example</artifactId>
	<packaging>war</packaging>
	...

Tags : build maven

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Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Users\namasivayams&gt;cd C:\test\deleteLater\testMVNProject\mkyongweb-core C:\test\deleteLater\testMVNProject\mkyongweb-core&gt;mvn package [INFO] Scanning for projects... [INFO] ------------------------------------------------------------------------ [INFO] Building mkyongweb-core Maven Webapp [INFO] task-segment: [package] [INFO] ------------------------------------------------------------------------ [WARNING] POM for 'org.apache.maven.wagon:wagon-file:pom:1.0-beta-2:runtime' is invalid. Its dependencies (if any) will NOT be available to the current build. [WARNING] POM for 'org.apache.maven.wagon:wagon-ssh-external:pom:1.0-beta-2:runt ime' is invalid. Its dependencies (if any) will NOT be available to the current build. [WARNING] POM for 'org.apache.maven.wagon:wagon-ssh:pom:1.0-beta-2:runtime' is i nvalid. Its dependencies (if any) will NOT be available to the current build. [WARNING] POM for 'org.codehaus.plexus:plexus-interpolation:pom:1.6:runtime' is invalid. Its dependencies (if any) will NOT be available to the current build. [INFO] [resources:resources {execution: default-resources}] [WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent! [INFO] Copying 0 resource [WARNING] POM for 'org.codehaus.plexus:plexus-container-default:pom:1.0-alpha-8: runtime' is invalid. Its dependencies (if any) will NOT be available to the current build. [WARNING] POM for 'org.codehaus.plexus:plexus-utils:pom:1.0.5:runtime' is invali d. Its dependencies (if any) will NOT be available to the current build. [INFO] [compiler:compile {execution: default-compile}] [INFO] No sources to compile [INFO] [resources:testResources {execution: default-testResources}] [WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent! [INFO] skip non existing resourceDirectory C:\test\deleteLater\testMVNProject\mk yongweb-core\src\test\resources [INFO] [compiler:testCompile {execution: default-testCompile}] [INFO] No sources to compile [WARNING] POM for 'org.apache.maven.surefire:surefire-api:pom:2.4.3:runtime' is invalid. Its dependencies (if any) will NOT be available to the current build. ----------------------------------------------------- this realm = app0.child-container[org.apache.maven.plugins:maven-surefire-plugin :2.4.3] urls[0] = file:/C:/Users/namasivayams/.m2/repository/org/apache/maven/plugins/ma ven-surefire-plugin/2.4.3/maven-surefire-plugin-2.4.3.jar urls[1] = file:/C:/Users/namasivayams/.m2/repository/org/apache/maven/surefire/s urefire-booter/2.4.3/surefire-booter-2.4.3.jar urls[2] = file:/C:/Users/namasivayams/.m2/repository/org/apache/maven/surefire/s urefire-api/2.4.3/surefire-api-2.4.3.jar urls[3] = file:/C:/Users/namasivayams/.m2/repository/org/codehaus/plexus/plexus- utils/1.5.1/plexus-utils-1.5.1.jar Number of imports: 10 import: org.codehaus.classworlds.Entry@a6c57a42 import: org.codehaus.classworlds.Entry@12f43f3b import: org.codehaus.classworlds.Entry@20025374 import: org.codehaus.classworlds.Entry@f8e44ca4 import: org.codehaus.classworlds.Entry@92758522 import: org.codehaus.classworlds.Entry@ebf2705b import: org.codehaus.classworlds.Entry@bb25e54 import: org.codehaus.classworlds.Entry@bece5185 import: org.codehaus.classworlds.Entry@3fee8e37 import: org.codehaus.classworlds.Entry@3fee19d8 this realm = plexus.core urls[0] = file:/C:/Downloads/apache-maven-2.2.1/lib/maven-2.2.1-uber.jar Number of imports: 10 import: org.codehaus.classworlds.Entry@a6c57a42 import: org.codehaus.classworlds.Entry@12f43f3b import: org.codehaus.classworlds.Entry@20025374 import: org.codehaus.classworlds.Entry@f8e44ca4 import: org.codehaus.classworlds.Entry@92758522 import: org.codehaus.classworlds.Entry@ebf2705b import: org.codehaus.classworlds.Entry@bb25e54 import: org.codehaus.classworlds.Entry@bece5185 import: org.codehaus.classworlds.Entry@3fee8e37 import: org.codehaus.classworlds.Entry@3fee19d8 ----------------------------------------------------- [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Internal error in the plugin manager executing goal 'org.apache.maven.plu gins:maven-surefire-plugin:2.4.3:test': Unable to load the mojo 'org.apache.mave n.plugins:maven-surefire-plugin:2.4.3:test' in the plugin 'org.apache.maven.plug ins:maven-surefire-plugin'. A required class is missing: org/apache/maven/surefi re/util/NestedCheckedException org.apache.maven.surefire.util.NestedCheckedException [INFO] ------------------------------------------------------------------------ [INFO] For more information, run Maven with the -e switch [INFO] ------------------------------------------------------------------------ [INFO] Total time: 2 seconds [INFO] Finished at: Fri Aug 03 08:42:38 EDT 2012 [INFO] Final Memory: 9M/109M [INFO] ------------------------------------------------------------------------ C:\test\deleteLater\testMVNProject\mkyongweb-core&gt;

Akram April 19, 2013 at 2:07 am
Hi mkyong, I have a question please, we have an ant build.xml, we want to migrate to maven, how to convert targets from build.xml to maven.
thanks, your help is appreciated.
rohit April 5, 2013 at 4:18 pm
how to genrate ear file from Maven?

Siva August 3, 2012 at 8:43 pm

when i run mvn package. i am getting the following error..

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.
 
C:\Users\namasivayams&amp;gt;cd C:\test\deleteLater\testMVNProject\mkyongweb-core
 
C:\test\deleteLater\testMVNProject\mkyongweb-core&amp;gt;mvn package
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building mkyongweb-core Maven Webapp
[INFO]    task-segment: [package]
[INFO] ------------------------------------------------------------------------
[WARNING] POM for 'org.apache.maven.wagon:wagon-file:pom:1.0-beta-2:runtime' is
invalid.
 
Its dependencies (if any) will NOT be available to the current build.
[WARNING] POM for 'org.apache.maven.wagon:wagon-ssh-external:pom:1.0-beta-2:runt
ime' is invalid.
 
Its dependencies (if any) will NOT be available to the current build.
[WARNING] POM for 'org.apache.maven.wagon:wagon-ssh:pom:1.0-beta-2:runtime' is i
nvalid.
 
Its dependencies (if any) will NOT be available to the current build.
[WARNING] POM for 'org.codehaus.plexus:plexus-interpolation:pom:1.6:runtime' is
invalid.
 
Its dependencies (if any) will NOT be available to the current build.
[INFO] [resources:resources {execution: default-resources}]
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources,
i.e. build is platform dependent!
[INFO] Copying 0 resource
[WARNING] POM for 'org.codehaus.plexus:plexus-container-default:pom:1.0-alpha-8:
runtime' is invalid.
 
Its dependencies (if any) will NOT be available to the current build.
[WARNING] POM for 'org.codehaus.plexus:plexus-utils:pom:1.0.5:runtime' is invali
d.
 
Its dependencies (if any) will NOT be available to the current build.
[INFO] [compiler:compile {execution: default-compile}]
[INFO] No sources to compile
[INFO] [resources:testResources {execution: default-testResources}]
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources,
i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory C:\test\deleteLater\testMVNProject\mk
yongweb-core\src\test\resources
[INFO] [compiler:testCompile {execution: default-testCompile}]
[INFO] No sources to compile
[WARNING] POM for 'org.apache.maven.surefire:surefire-api:pom:2.4.3:runtime' is
invalid.
 
Its dependencies (if any) will NOT be available to the current build.
-----------------------------------------------------
this realm = app0.child-container[org.apache.maven.plugins:maven-surefire-plugin
:2.4.3]
urls[0] = file:/C:/Users/namasivayams/.m2/repository/org/apache/maven/plugins/ma
ven-surefire-plugin/2.4.3/maven-surefire-plugin-2.4.3.jar
urls[1] = file:/C:/Users/namasivayams/.m2/repository/org/apache/maven/surefire/s
urefire-booter/2.4.3/surefire-booter-2.4.3.jar
urls[2] = file:/C:/Users/namasivayams/.m2/repository/org/apache/maven/surefire/s
urefire-api/2.4.3/surefire-api-2.4.3.jar
urls[3] = file:/C:/Users/namasivayams/.m2/repository/org/codehaus/plexus/plexus-
utils/1.5.1/plexus-utils-1.5.1.jar
Number of imports: 10
import: org.codehaus.classworlds.Entry@a6c57a42
import: org.codehaus.classworlds.Entry@12f43f3b
import: org.codehaus.classworlds.Entry@20025374
import: org.codehaus.classworlds.Entry@f8e44ca4
import: org.codehaus.classworlds.Entry@92758522
import: org.codehaus.classworlds.Entry@ebf2705b
import: org.codehaus.classworlds.Entry@bb25e54
import: org.codehaus.classworlds.Entry@bece5185
import: org.codehaus.classworlds.Entry@3fee8e37
import: org.codehaus.classworlds.Entry@3fee19d8
 
 
this realm = plexus.core
urls[0] = file:/C:/Downloads/apache-maven-2.2.1/lib/maven-2.2.1-uber.jar
Number of imports: 10
import: org.codehaus.classworlds.Entry@a6c57a42
import: org.codehaus.classworlds.Entry@12f43f3b
import: org.codehaus.classworlds.Entry@20025374
import: org.codehaus.classworlds.Entry@f8e44ca4
import: org.codehaus.classworlds.Entry@92758522
import: org.codehaus.classworlds.Entry@ebf2705b
import: org.codehaus.classworlds.Entry@bb25e54
import: org.codehaus.classworlds.Entry@bece5185
import: org.codehaus.classworlds.Entry@3fee8e37
import: org.codehaus.classworlds.Entry@3fee19d8
-----------------------------------------------------
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Internal error in the plugin manager executing goal 'org.apache.maven.plu
gins:maven-surefire-plugin:2.4.3:test': Unable to load the mojo 'org.apache.mave
n.plugins:maven-surefire-plugin:2.4.3:test' in the plugin 'org.apache.maven.plug
ins:maven-surefire-plugin'. A required class is missing: org/apache/maven/surefi
re/util/NestedCheckedException
org.apache.maven.surefire.util.NestedCheckedException
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2 seconds
[INFO] Finished at: Fri Aug 03 08:42:38 EDT 2012
[INFO] Final Memory: 9M/109M
[INFO] ------------------------------------------------------------------------
C:\test\deleteLater\testMVNProject\mkyongweb-core&amp;gt;

mkyong August 4, 2012 at 8:35 am
Are you using surefire to generate unit test report? What is your Maven version? Try use the latest.
You look have many dependencies not available errors, try comment them and run again.

venkatesh October 18, 2011 at 6:20 pm
i am runing the server in debuging mode i am getting this error:Could not initialize the ServletContextListener

How to build project with Maven

“mvn package” example

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“mvn package” example

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