Spring方法注入method_injection

 

package com.astute.sparrow.spring.ioc.method_injection;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;

@Component("a")
public class A {
	@Autowired
	@Qualifier("b")
	private B b;
	
	public void printB() {
		System.out.println(getB());
	}

	public B getB() {
		return b;
	}

	public void setB(B b) {
		this.b = b;
	}

}

package com.astute.sparrow.spring.ioc.method_injection;

import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;

@Component("b")
@Scope("prototype")
public class B {

}

 

<bean id="a" class="com.astute.sparrow.spring.ioc.method_injection.A">
	<lookup-method name="getB" bean="b"/>
</bean>
<bean id="b" class="com.astute.sparrow.spring.ioc.method_injection.B" scope="prototype"/>

 

BeanFactory factory = new XmlBeanFactory(new ClassPathResource(
				"com/astute/sparrow/spring/ioc/method_injection/spring-method-injection.xml"));
A a = (A) factory.getBean("a");
a.printB();
a.printB();

 

输出：

com.astute.sparrow.spring.ioc.method_injection.B@d08633
com.astute.sparrow.spring.ioc.method_injection.B@1a9334