Spring销毁类顺序

Spring destroy类的顺序通过配置文件中配置“depends-on”来实现，同理init顺序正好相反。

实例：

bean1:

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public class Bean1 {    public void destroy() {        System.out.println("bean1 destroy.");    }}

?bean2:

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public class Bean2 {    public void destroy() {        System.out.println("bean2 destroy.");    }}

?bean3:

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public class Bean3 {    // private Bean1 bean1;    public void destroy() {        System.out.println("bean3 destroy.");    }}

bean4:

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public class Bean4 {    private Bean2 bean2;    public void destroy() {        System.out.println("bean4 destroy.");    }    public void setBean2(Bean2 bean2) {        this.bean2 = bean2;    }}

?配置文件：

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<bean id="bean2" destroy-method="destroy"></bean>
<bean id="bean3" depends-on="bean1" destroy-method="destroy"></bean>
<bean id="bean4" depends-on="bean2" destroy-method="destroy"></bean>

?执行mian：

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public static void main(String[] args) {        ClassPathXmlApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");        ac.destroy();    }

?执行结果：

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?写道bean4 destroy.
bean3 destroy.
bean2 destroy.
bean1 destroy.