dubbo结合spring

public class ServiceBean
    
      extends ServiceConfig
     
       implements InitializingBean, DisposableBean, ApplicationContextAware, ApplicationListener
      
       , BeanNameAware {    private static final long serialVersionUID = 213195494150089726L;    private static transient ApplicationContext SPRING_CONTEXT;    private final transient Service service;    private transient ApplicationContext applicationContext;    private transient String beanName;    private transient boolean supportedApplicationListener;
      
     
    

spring 容器中通过@PostConstruct和@PreDestroy可以对Bean进行初始化和销毁；或者通InitializingBean和DisposableBean实现对Bean的初始化和销毁。

InitializingBean

这说明在spring初始化bean的时候，如果bean实现了InitializingBean接口，会自动调用afterPropertiesSet方法。

public void afterPropertiesSet() throws Exception {        if (getProvider() == null) {

进行了以上各种Model，Config的初始化。

ApplicationListener

核心方法为：onApplicationEvent，监听所有发送到ApplicationContext中到Event。

public synchronized void export() {        if (provider != null) {            if (export == null) {                export = provider.getExport();            }            if (delay == null) {                delay = provider.getDelay();            }        }        if (export != null && !export) {            return;        }        if (delay != null && delay > 0) {            delayExportExecutor.schedule(new Runnable() {                public void run() {                    doExport();                }            }, delay, TimeUnit.MILLISECONDS);        } else {            doExport();        }    }

通过一个延迟线程池，对各种Config，Model进行初始化。

ApplicationContext

通过ApplicationContext可以获取Spring容器中的所有Bean，也可以通过setApplicationContext获取Spring上下文。

public void setApplicationContext(ApplicationContext applicationContext) {        this.applicationContext = applicationContext;        SpringExtensionFactory.addApplicationContext(applicationContext);        if (applicationContext != null) {            SPRING_CONTEXT = applicationContext;            try {                Method method = applicationContext.getClass().getMethod("addApplicationListener", new Class
    []{ApplicationListener.class}); // backward compatibility to spring 2.0.1                method.invoke(applicationContext, new Object[]{this});                supportedApplicationListener = true;            } catch (Throwable t) {                if (applicationContext instanceof AbstractApplicationContext) {                    try {                        Method method = AbstractApplicationContext.class.getDeclaredMethod("addListener", new Class
    []{ApplicationListener.class}); // backward compatibility to spring 2.0.1                        if (!method.isAccessible()) {                            method.setAccessible(true);                        }                        method.invoke(applicationContext, new Object[]{this});                        supportedApplicationListener = true;                    } catch (Throwable t2) {                    }                }            }        }    }