Question

如何让spring在启动后立即执行我需要的操作

Answer 1

如果你想在Spring容器完成bean的实例化、配置和其它的初始化后执行一些自定义逻辑，你可以插入一个或多个的BeanPostProcessor实现

Java代码
package scripting;

import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.beans.BeansException;

public class InstantiationTracingBeanPostProcessor implements BeanPostProcessor {

// simply return the instantiated bean as-is
public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
return bean; // we could potentially return any object reference here...
}

public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
System.out.println("Bean '" + beanName + "' created : " + bean.toString());
return bean;
}
}

<?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:lang="http://www.springframework.org/schema/lang"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-2.5.xsd">