pf4j spring 集成几个问题记录

public class PluginB extends SpringPlugin {
    public PluginB(PluginWrapper wrapper) {
        super(wrapper);
    }
    @Override
    protected ApplicationContext createApplicationContext() {
        AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext();
        applicationContext.setClassLoader(getWrapper().getPluginClassLoader());
        applicationContext.register(PluginBConfig.class);
        applicationContext.refresh();
        return applicationContext;
    }
}

protected void registerExtension(Class<?> extensionClass) {
    Map<String, ?> extensionBeanMap = springPluginManager.getApplicationContext().getBeansOfType(extensionClass);
    if (extensionBeanMap.isEmpty()) {
        Object extension = springPluginManager.getExtensionFactory().create(extensionClass);
        beanFactory.registerSingleton(extensionClass.getName(), extension); // 使用了bootstrap 的applicationcontext
    } else {
        log.debug("Bean registeration aborted! Extension '{}' already existed as bean!", extensionClass.getName());
    }
}

public class pluginC extends SpringPlugin {
    public pluginC(PluginWrapper wrapper) {
        super(wrapper);
    }
    @Override
    protected ApplicationContext createApplicationContext() {
         // 先获取SpringPluginManager 的ApplicationContext，也就是bootstrap 的ApplicationContext
        ApplicationContext applicationContextRoot  = ((SpringPluginManager)getWrapper().getPluginManager()).getApplicationContext();
        AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext();
        applicationContext.setClassLoader(getWrapper().getPluginClassLoader());
        // 设置父applicationtext
        applicationContext.setParent(applicationContextRoot);
        applicationContext.register(PluginCConfig.class);
        applicationContext.refresh();
        return applicationContext;
    }
}