Tells maven engine to ignore and not include a component of a dependency.
for an example :
in the following code :
1: <dependency>2: <groupId>org.apache.activemq</groupId>3: <artifactId>activemq-camel</artifactId>4: <exclusions>5: <exclusion>6: <groupId>org.apache.camel</groupId>7: <artifactId>camel-web</artifactId>8: </exclusion>9: </exclusions>10: </dependency>
We instruct the maven engine to ignore and not include the camel-web component when including the activemq- camel component .
I found several resources about how to make an executable jar using maven.
I want the the executable jar file to contain all the dependencies jars that the project need .
In general the following steps are used to generate the jar file:
Create the sample eclipse project :1: $ mvn archetype:generate -DgroupId=my.learn -DartifactId=mavenToExeJar -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false2:3: cd mavenToExeJar4:5: mvn eclipse:eclipse
The main class:
1: package my.learn;2: import org.springframework.context.ApplicationContext;3: import org.springframework.context.support.FileSystemXmlApplicationContext;4: public class App5: {6: public static void main( String[] args )7: {8: ApplicationContext context = new FileSystemXmlApplicationContext(9: "SpringXMLConfig.xml");10: MyBean theMyBean = (MyBean) context.getBean("MyBean");11: System.out.println( "Hello:" + theMyBean.getName() );12: }13: }14:
The bean :
1: package my.learn;2: public class MyBean {3: private String mName;4:5: public String getName()6: {7: return mName;8: }9: public void setName(String pValue)10: {11: mName = pValue;12: }13: }
The spring context file
1: <?xml version="1.0" encoding="windows-1252"?>2: <beans xmlns="http://www.springframework.org/schema/beans"3: xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"4: xmlns:aop="http://www.springframework.org/schema/aop"5: xmlns:c="http://www.springframework.org/schema/c"6: xmlns:context="http://www.springframework.org/schema/context"7: xmlns:flow="http://www.springframework.org/schema/webflow-config"8: xmlns:jms="http://www.springframework.org/schema/jms"9: xmlns:lang="http://www.springframework.org/schema/lang"10: xmlns:p="http://www.springframework.org/schema/p"11: xmlns:tx="http://www.springframework.org/schema/tx"12: xmlns:util="http://www.springframework.org/schema/util"13:14: xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd15: http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd16: http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd17: http://www.springframework.org/schema/webflow-config http://www.springframework.org/schema/webflow-config/spring-webflow-config-2.0.xsd18: http://www.springframework.org/schema/jms http://www.springframework.org/schema/jms/spring-jms-3.2.xsd19: http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-3.2.xsd20: http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd21: http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd22: ">23: <bean id="MyBean" class="my.learn.MyBean">24: <property name="name" value="Abdala" />25: </bean>26: </beans>
The maven xml pom file :
1: <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"2: xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">3: <modelVersion>4.0.0</modelVersion>4: <groupId>my.learn</groupId>5: <artifactId>mavenToExeJar</artifactId>6: <packaging>jar</packaging>7: <version>1.0-SNAPSHOT</version>8: <name>mavenToExeJar</name>9: <url>http://maven.apache.org</url>10: <properties>11: <jdk.version>1.6</jdk.version>12: <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>13: </properties>14: <dependencies>15: <dependency>16: <groupId>junit</groupId>17: <artifactId>junit</artifactId>18: <version>3.8.1</version>19: <scope>test</scope>20: </dependency>21:22: <!-- Spring framework -->23: <dependency>24: <groupId>org.springframework</groupId>25: <artifactId>spring-context</artifactId>26: <version>3.2.3.RELEASE</version>27: </dependency>28: </dependencies>29: <build>30: <plugins>31: <plugin>32: <groupId>org.apache.maven.plugins</groupId>33: <artifactId>maven-jar-plugin</artifactId>34: <version>2.3</version>35: <configuration>36: <archive>37: <manifest>38: <mainClass>my.learn.App</mainClass>39: <addClasspath>true</addClasspath>40: </manifest>41: </archive>42: </configuration>43: </plugin>44: <plugin>45: <groupId>org.dstovall</groupId>46: <artifactId>onejar-maven-plugin</artifactId>47: <version>1.4.4-SNAPSHOT</version>48: <executions>49: <execution>50: <configuration>51: <!-- Optional52: <onejarVersion>0.97</onejarVersion>53: Optional, use only if you need to include native libraries(dll's)54: <directory>${project.build.directory}/dllextract</directory>55: <include>test.dll</include>56: </includes>57: </fileSet>58: </binlibs>-->59: <!-- Optional, default is false -->60: <attachToBuild>true</attachToBuild>61: <!-- Optional, default is "onejar" -->62: <classifier>onejar</classifier>63: </configuration>64: <goals>65: <goal>one-jar</goal>66: </goals>67: </execution>68: </executions>69: </plugin>70: </plugins>71: </build>72:73: <pluginRepositories>74: <pluginRepository>75: <id>onejar-maven-plugin.googlecode.com</id>76: <url>http://onejar-maven-plugin.googlecode.com/svn/mavenrepo-snapshot</url>77: </pluginRepository>78: </pluginRepositories>79: </project>80:
The folder structure
After compiling the project :
mvn compiler:compile etc
The packing stage :
mvn package
creates the executable jar file. (don't forget to copy the spring context file to the right location )
Execute the jar file
C:\learn\java\maven\executableJar\mavenToExeJar\target>java -jar mavenToExeJar-1
.0-SNAPSHOT.one-jar.jar
and walla :
Jun 08, 2013 10:18:22 AM org.springframework.context.support.AbstractApplication
Context prepareRefresh
INFO: Refreshing org.springframework.context.support.FileSystemXmlApplicationCon
text@16fdac: startup date [Sat Jun 08 10:18:22 IDT 2013]; root of context hierar
chy
Jun 08, 2013 10:18:22 AM org.springframework.beans.factory.xml.XmlBeanDefinition
Reader loadBeanDefinitions
INFO: Loading XML bean definitions from file [C:\learn\java\maven\executableJar\
mavenToExeJar\target\SpringXMLConfig.xml]
Jun 08, 2013 10:18:22 AM org.springframework.beans.factory.support.DefaultListab
leBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.
DefaultListableBeanFactory@7588c: defining beans [MyBean]; root of factory hiera
rchy
Hello:Abdalla
Resources:
http://www.mkyong.com/maven/how-to-create-a-jar-file-with-maven/
http://one-jar.sourceforge.net/
The maven profiles is an element in the POM file that allows customization of the build process .
The profiles element in the POM contains a list of profile elements .Each profile element has an id used in the call for the maven plugin execution and akey value collection: properties that define the profile properties list .
(There is although an <activation> option but its out of this post scope )
For an example lets look in the spring integration hello world demo .
The POM define 2 profiles that define options that define the key: java.main.class value
In the pom xml :
<profiles>
<profile>
<id>hello</id>
<properties>
<java.main.class>org.springframework.integration.samples.helloworld.HelloWorldApp</java.main.class>
</properties>
</profile>
<profile>
<id>poller</id>
<properties>
<java.main.class>org.springframework.integration.samples.helloworld.PollerApp</java.main.class>
</properties>
</profile>
</profiles>
The usage of the properties in the example in the exec-maven-plugin plugin where the main class is configured based on the selected profile property .
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<configuration>
<mainClass>${java.main.class}</mainClass>
</configuration>
</plugin>
In order to specify the current selected option in the mvn command use the –p for an exmple -p Hello
