Spring注入方式

package com.java.spring;
public class Chinese implements Person {
private Tool tool;
//方法1：使用set方法（推荐使用）
public Tool getTool() {
return tool;
}
public void setTool(Tool tool) {
this.tool = tool;
}
/*//方法2：构造方法（少用）
public Chinese(Tool tool){
this.tool=tool;
}
*/
@Override
public void work() {
// TODO Auto-generated method stub
tool.realwork();
}

}

package com.java.spring;
public class ConcreteToolA implements Tool {
@Override
public void realwork() {
// TODO Auto-generated method stub
System.out.println("from concreteToolA");
}
}

<?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="toolA" class="com.java.spring.ConcreteToolA"></bean>
<bean id="toolB" class="com.java.spring.ConcreteToolB"></bean>

<bean id="chinese" class="com.java.spring.Chinese">
<property name="tool" ref="toolB"></property>
<!--  方法2：少用
<constructor-arg>
<ref local="toolA"/>
</constructor-arg>
--></bean>

</beans>