Spring Setter/Getter 注入的对象时的两种形式 和使用 p的命名空间

<?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="piano" class="com.springinaction.springidol.Piano"
		scope="prototype" init-method="init" destroy-method="destory">
	</bean>

	<bean id="people" class="com.springinaction.springidol.People">
		<property name="name" value="nihao" />
		<!-- 第一种注入 方式<property name="piano" ref="piano" /> -->
		<!-- 内部bean 的注入-->
		<property name="piano">
			<bean class="com.springinaction.springidol.Piano" />
		</property>
	</bean>
</beans>

public class People {
	private String name;
	private String age;
	private String area;
	private Piano piano;
	
	public Piano getPiano() {
		return piano;
	}
	public void setPiano(Piano piano) {
		this.piano = piano;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getAge() {
		return age;
	}
	public void setAge(String age) {
		this.age = age;
	}
	public String getArea() {
		return area;
	}
	public void setArea(String area) {
		this.area = area;
	}
	
	public static void main(String args[]){
		ApplicationContext ac=new ClassPathXmlApplicationContext("com/springinaction/springidol/springidol-context-2.xml");
		People people=(People)ac.getBean("people");
		System.out.println(people.getName());
		people.getPiano().play();
		
	}
}

一些更加简便的方式 来源    http://blog.csdn.net/joker_zhou/article/details/8551692

p:命名空间:

xmlns:p="http://www.springframework.org/schema/p"

作用:简化在xml配置bean的属性 在<bean>中使用p:属性名来配置

AOP:命名空间:

xmlns:aop="http://www.springframework.org/schema/aop"

xsi:schemaLocation:

http://www.springframework.org/schema/aop  http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

作用:简化AspectJ的AOP在xml中配置

util:命名空间:

xmlns:util="http://www.springframework.org/schema/util"

xsi:schemaLocation:

http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd

context:命名空间:

xmlns:context="http://www.springframework.org/schema/context"

xsi:schemaLocation:

http://www.springframework.org/schema/context  http://www.springframework.org/schema/context/spring-context.xsd

作用:1.配置自动扫描bean注解类

context:命名空间:

xmlns:mvc="http://www.springframework.org/schema/mvc"

xsi:schemaLocation:

http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd

具体配置如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

	<bean id="piano" class="com.springinaction.springidol.Piano"
		scope="prototype" init-method="init" destroy-method="destory">
	</bean>
	<bean id="people" class="com.springinaction.springidol.People"
		p:name="haha" p:piano-ref="piano" />

</beans>

java 代码同上。