1 package cim.springNeed;
2 
3 public interface HelloWorld {
4     public void sayHello();
5 }

package cim.springNeed;

public class HelloWorldBean implements HelloWorld{
    private String helloWorld;
    public void sethelloWorld(String helloWorld){
        this.helloWorld=helloWorld;
    }
    public void sayHello(){
        System.out.println(helloWorld);
    }
}

<bean id="helloWorldBean" class="cim.springNeed.HelloWorldBean">  
    <property name="helloWorld">  
        <value>Hello,Welcome To Spring World!</value>  
    </property>  
</bean>

package cim.springNeed;
import org.springframework.beans.factory.BeanFactory;  
import org.springframework.beans.factory.xml.XmlBeanFactory;  
import org.springframework.core.io.ClassPathResource;  
import org.springframework.core.io.Resource; 

public class FirstSpringDemo {
    public static void main(String[] args){
        //-----------BeanFactory IoC容器---------------------//  
        //从classpath路径上装载XML的配置信息 
        Resource r=new ClassPathResource("web.xml");
        //实例化IOC容器,此时容器并未实例化beans-config.xml所定义的各个受管bean.  
        BeanFactory factory=new XmlBeanFactory(r);
        //获取受管bean
        HelloWorld h=(HelloWorld)factory.getBean("helloWorldBean");
        h.sayHello();
    }
}