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

摘要: Spring 命名空间的使用 还有就是 Setter/Getter的注入

<?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。