Spring在非web应用中关闭IoC容器 (registerShutdownHook)

        在基于web的ApplicationContext实现中,已有相应的实现来处理关闭web应用时恰当地关闭Spring IoC容器。

       但,如果你正在一个非web应用的环境下使用Spring的IoC容器,如dubbo服务,你想让容器优雅的关闭,并调用singleton的bean相应destory回调方法,你需要在JVM里注册一个“关闭钩子”(shutdown hook)。这一点非常容易做到,并且将会确保你的Spring IoC容器被恰当关闭,以及所有由单例持有的资源都会被释放。

      为了注册“关闭钩子”,你只需要简单地调用在org.springframework.context.support.AbstractApplicationContext实现中的registerShutdownHook()方法即可。


package com.hcm.dubbo.service;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class DubboServiceStart {

	private static final Logger LOG = LoggerFactory.getLogger(DubboServiceStart.class);

	public static final String DUBBO_PROVIDER = "spring/dubbo-provider.xml";

	public static void init() {

		LOG.info("开始启动dubo服务,载入的配置服务提供文件为[" + DUBBO_PROVIDER + "]");

		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] { DUBBO_PROVIDER });

		context.registerShutdownHook();
		context.start();

		LOG.info("dubbo启动服务完毕,请查看日志");

		String[] names = context.getBeanDefinitionNames();
		System.out.print("Beans:");
		for (String string : names) {
			System.out.print(string + ",");
		}
		System.out.println();
	}

	public static void main(String[] args) throws InterruptedException {
		DubboServiceStart.init();
		while (true) {
			try {
				Thread.currentThread();
				Thread.sleep(3L);
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}

}




 


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