在Spring中,比如“init方法”,但在注入依赖项之后调用?

对于Spring2.5及更高版本,如果对象在初始化时需要调用回调方法,则可以使用 @PostConstruct 注释。

例如:

public class MyClass{

   @PostConstruct
   public void myMethod() {
     ...
   }
   ...
} 

这比 BeanPostProcessor 方法。

据我所知, the init-method is called after all dependencies are injected . 试一试:

public class TestSpringBean
{
    public TestSpringBean(){
        System.out.println( "Called constructor" );
    }

    public void setAnimal( String animal ){
        System.out.println( "Animal set to '" + animal + "'");
    }

    public void setAnother( TestSpringBean another ){
        System.out.println( "Another set to " + another );
    }

    public void init(){
        System.out.println( "Called init()" );
    }
}

<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-2.5.xsd">

    <bean id="myBean" class="TestSpringBean" init-method="init">
        <property name="animal" value="hedgehog" />
        <property name="another" ref="depBean" />
    </bean>

    <bean id="depBean" class="TestSpringBean"/>

</beans>

这就产生了:

Called constructor
Called constructor
Animal set to 'hedgehog'
Another set to com.et.idp.wf.integration.TestSpringBean@7d95d4fe
Called init()

你需要实施 InitializingBean 接口并重写 afterPropertiesSet 方法。