Quick Start with Spring
March 19th, 2012 . by admin1.Software
- Java 1.6
- Eclipse Helios
- Spring Framework 3.1.1
Download Page: http://www.springsource.org/download
Download: spring-framework-3.1.1.RELEASE.zip 27.4 MB - Apache Commons Logging
Download Page: http://commons.apache.org/logging/download_logging.cgi
Download: commons-logging-1.1.1-bin.zip 1.02 MB
2.Create User Libraries:
In Eclipse you need 2 user libraries: spring-framework-3.1.1 and commons-logging
Create user library: spring-framework-3.1.1
- Extract spring-framework-3.1.1.RELEASE.zip to C:Javalibrariesspring-framework-3.1.1.RELEASE
- In Eclipse: Menu Windows → Preferences
- → Click Java→Build Path→User Libraries→Click Button New…
- → Input in field User library name: spring-framework-3.1.1
- → Ok
- → Click Button Add JARs..
- → Select all JAR file from C:Javalibrariesspring-framework-3.1.1.RELEASEdist
Create user library: commons-logging-1.1.1
- Extract spring-framework-3.1.1.RELEASE.zip to C:Javalibrariesspring-framework-3.1.1.RELEASE
- Do the same steps like user library spring-framework-3.1.1, create the user lirary commons-logging-1.1.1,
add only JAR file: commons-logging-1.1.1.jar
Note: Without Apache Commons Logging you get the error message:
Exception in thread “main” java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
3. Create Project in Eclipse
- Create a Java Project exm. Spring_QuickStart:
Menu File → New → Java Project - Add User Libraries:
Right click Project Spring_QuickStart → Build Path → Add Libraries → User Libraries →
add the user libraries spring-framework-3.1.1 and commons-logging
4.Create a simmple Java class
package model;
public class Prompter {
private String message;
public void prompt() {
System.out.println(message);
}
public void setMessage(String message) {
this.message = message;
}
}
5.Create file ..src/beans.xml
<?xml version="1.0" encoding="UTF-8"?> <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.xsd"> <bean id="myPrompter" class="model.Prompter"> <property name="message" value="Here is my first Spring program!"></property> </bean> </beans>
6.Create a Test Class
package model;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class App {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext(
"beans.xml");
Prompter p = (Prompter) context.getBean("myPrompter");
p.prompt();
}
}
7.Run Test
Run Class App as Java Application, you see this in the Console:
19-Mar-2012 11:41:39 org.springframework.context.support.AbstractApplicationContext prepareRefresh INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@133f1d7: startup date [Mon Mar 19 11:41:39 CET 2012]; root of context hierarchy 19-Mar-2012 11:41:39 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions INFO: Loading XML bean definitions from class path resource [beans.xml] 19-Mar-2012 11:41:39 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@80fa6f: defining beans [myPrompter]; root of factory hierarchy Here is my first Spring program!
