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