spring annotation 配置笔记
applicationContext.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"     [color=green]  xmlns:context="http://www.springframework.org/schema/context"[/color]       xsi:schemaLocation="http://www.springframework.org/schema/beans            http://www.springframework.org/schema/beans/spring-beans-2.5.xsd         [color=green]  http://www.springframework.org/schema/context           http://www.springframework.org/schema/context/spring-context-2.5.xsd"[/color]>                   [color=green] <context:annotation-config/>[/color]  <bean id="u"  init-method="init" destroy-method="destory">  <!--    <property name="bbb" ref="bbb"></property>  -->  </bean>  <bean id="bbb"  init-method="init" destroy-method="destory"></bean><bean id="bbb2"  init-method="init" destroy-method="destory"></bean></beans>

package demo;import org.springframework.beans.factory.BeanFactory;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Qualifier;import org.springframework.context.support.ClassPathXmlApplicationContext;public class AAA {/** * @param args */private BBB bbb;public void init(){System.out.println("AAA...inited..........");}public void destory(){System.out.println("AAA...destory.........");}public static void main(String[] args) {ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(        new String[] {"application.xml"});// an ApplicationContext is also a BeanFactory (via inheritance)BeanFactory factory = context;AAA aa=(AAA) factory.getBean("u");//BBB bb=(BBB) factory.getBean("bbb");//BBB bb1=(BBB) factory.getBean("bbb");context.destroy();}public void setBbb( BBB bbb) {this.bbb = bbb;}@Autowired/*@Autowired可以写在任一方法前，spring会根据参数类型（byType）在上面的文件中寻找相应的bean进行实例化，如果想要根据名称进行实例化，则需要在参数前加上@Qualifier，如下代码指定名称*/public void dqwdqw(@Qualifier("bbb2")BBB bbb){System.out.println("111111111");}}

package demo;public class BBB {public BBB(){}public static Integer n=10;private Integer nnn;public void init(){System.out.println("BBB...inited..........");}public void destory(){System.out.println("BBB...destory.........");}public static Integer getN() {return n;}public static void setN(Integer n) {BBB.n = n;}public Integer getNnn() {return nnn;}public void setNnn(Integer nnn) {this.nnn = nnn;}}