HelloWorld using Maven + Spring

A step by step guide to create a HelloWorld java application using Spring framework.

Generate project structure with Maven

mvn archetype:generate -DgroupId=net.qstation.springapp -DartifactId=HelloWorld -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false

Add Spring dependency

In pom.xml, add

:
<!-- Shared version number properties -->
<properties>
<org.springframework.version>3.1.2.RELEASE</org.springframework.version>
</properties>
:
:
<!-- Spring framework -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${org.springframework.version}</version>
</dependency>
:

Create the bean

Create src/main/java/net/qstation/springapp/HelloWorld.java

package net.qstation.springapp;

/**
* Spring bean
*
*/
public class HelloWorld {
  private String name;

  public void setName(String name) {
    this.name = name;
  }

  public void printHello() {
    System.out.println("Hello ! " + name);
  }
}

Configure the bean

Create src/main/resources/HelloWorld-bean.xml

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

	<bean id="helloBean" class="net.qstation.springapp.HelloWorld">
		<property name="name" value="q-station" />
	</bean>
</beans>

Create the app

Modify src/main/java/net/qstation/springapp/App.java

package net.qstation.springapp;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * Hello world!
 * 
 */
public class App
{
    public static void main( String[] args )
    {
      ApplicationContext context = new ClassPathXmlApplicationContext(
                                "HelloWorld-bean.xml");

      HelloWorld obj = (HelloWorld) context.getBean("helloBean");
      obj.printHello();
    }
}

Package & run it

Plugin one-jar may be use to produce a all in one jar with all dependency included.

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration> 
                    <archive>   
                        <manifest>
                            <mainClass>net.qstation.springapp.App</mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>   
            <plugin>
                <groupId>org.dstovall</groupId>
                <artifactId>onejar-maven-plugin</artifactId>
                <version>1.4.4</version>
                <executions>
                    <execution>
                        <configuration>
                        </configuration>
                        <goals>
                            <goal>one-jar</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
    
    <pluginRepositories>
        <pluginRepository>
            <id>onejar-maven-plugin.googlecode.com</id>
            <url>http://onejar-maven-plugin.googlecode.com/svn/mavenrepo</url>
        </pluginRepository>
    </pluginRepositories>

Then,

mvn clean package
java -jar target/HelloWorld-1.0-SNAPSHOT.one-jar.jar