Spring Aware的目的是为了让Bean获得Spring容器的服务

 

//获取容器中的bean名称

import org.springframework.beans.factory.BeanNameAware;

//获得资源加载器，可以获得额外的资源

import org.springframework.context.ResourceLoaderAware;

 

package ch2.aware;import java.io.IOException;import org.apache.commons.io.IOUtils;//获取容器中的bean名称import org.springframework.beans.factory.BeanNameAware;//获得资源加载器，可以获得额外的资源import org.springframework.context.ResourceLoaderAware;import org.springframework.core.io.Resource;import org.springframework.core.io.ResourceLoader;import org.springframework.stereotype.Service;//AwareService是spring的一个组件@Service//实现BeanNameAware，ResourceLoaderAware资源的接口，获得名称和资源加载的服务public class AwareService implements BeanNameAware,ResourceLoaderAware {			private String beanName;	private ResourceLoader loader;	//实现ResourceLoaderAware需要重写setResourceLoader	@Override	public void setResourceLoader(ResourceLoader resourceLoader) {		// TODO Auto-generated method stub		this.loader = resourceLoader;			}	//实现BeanNameAware需要重写setBeanName	@Override	public void setBeanName(String name) {		// TODO Auto-generated method stub		this.beanName = name;			}		public void outputResult()	{		System.out.println("bean的名字为："+ beanName);				Resource resource = loader.getResource("classpath:ch2/aware/test.txt");				try {			System.out.println("ResourceLoader加载的内容为：" + IOUtils.toString(resource.getInputStream()));		} catch (IOException e) {			// TODO Auto-generated catch block			e.printStackTrace();		}	}				}

　配置：

package ch2.aware;import org.springframework.context.annotation.ComponentScan;import org.springframework.context.annotation.Configuration;//声明本类是一个配置类@Configuration//自动加载ch2.aware包下面的内容@ComponentScan("ch2.aware")public class AwareConfig {}

　　运行：

package ch2.aware;import org.springframework.context.annotation.AnnotationConfigApplicationContext;public class Main {	public static void main(String[] args)	{				AnnotationConfigApplicationContext context= new AnnotationConfigApplicationContext(AwareConfig.class);		AwareService awareService  = context.getBean(AwareService.class);		awareService.outputResult();		context.close();	}	}