org.springframework.beans.factory.BeanFactoryUtils#beanOfTypeIncludingAncestors ( )源码实例Demo

protected ScriptTemplateConfig autodetectViewConfig() throws BeansException {
	try {
		return BeanFactoryUtils.beanOfTypeIncludingAncestors(
				obtainApplicationContext(), ScriptTemplateConfig.class, true, false);
	}
	catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException("Expected a single ScriptTemplateConfig bean in the current " +
				"web application context or the parent root context: ScriptTemplateConfigurer is " +
				"the usual implementation. This bean may have any name.", ex);
	}
}
 

/**
 * Autodetect a {@link FreeMarkerConfig} object via the ApplicationContext.
 * @return the Configuration instance to use for FreeMarkerViews
 * @throws BeansException if no Configuration instance could be found
 * @see #setConfiguration
 */
protected FreeMarkerConfig autodetectConfiguration() throws BeansException {
	try {
		return BeanFactoryUtils.beanOfTypeIncludingAncestors(
				obtainApplicationContext(), FreeMarkerConfig.class, true, false);
	}
	catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException(
				"Must define a single FreeMarkerConfig bean in this web application context " +
						"(may be inherited): FreeMarkerConfigurer is the usual implementation. " +
						"This bean may be given any name.", ex);
	}
}
 

protected ScriptTemplateConfig autodetectViewConfig() throws BeansException {
	try {
		return BeanFactoryUtils.beanOfTypeIncludingAncestors(
				obtainApplicationContext(), ScriptTemplateConfig.class, true, false);
	}
	catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException("Expected a single ScriptTemplateConfig bean in the current " +
				"Servlet web application context or the parent root context: ScriptTemplateConfigurer is " +
				"the usual implementation. This bean may have any name.", ex);
	}
}
 

/**
 * Autodetect a {@link FreeMarkerConfig} object via the ApplicationContext.
 * @return the Configuration instance to use for FreeMarkerViews
 * @throws BeansException if no Configuration instance could be found
 * @see #getApplicationContext
 * @see #setConfiguration
 */
protected FreeMarkerConfig autodetectConfiguration() throws BeansException {
	try {
		return BeanFactoryUtils.beanOfTypeIncludingAncestors(
				obtainApplicationContext(), FreeMarkerConfig.class, true, false);
	}
	catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException(
				"Must define a single FreeMarkerConfig bean in this web application context " +
				"(may be inherited): FreeMarkerConfigurer is the usual implementation. " +
				"This bean may be given any name.", ex);
	}
}
 

protected ScriptTemplateConfig autodetectViewConfig() throws BeansException {
	try {
		return BeanFactoryUtils.beanOfTypeIncludingAncestors(
				obtainApplicationContext(), ScriptTemplateConfig.class, true, false);
	}
	catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException("Expected a single ScriptTemplateConfig bean in the current " +
				"web application context or the parent root context: ScriptTemplateConfigurer is " +
				"the usual implementation. This bean may have any name.", ex);
	}
}
 

/**
 * Autodetect a {@link FreeMarkerConfig} object via the ApplicationContext.
 * @return the Configuration instance to use for FreeMarkerViews
 * @throws BeansException if no Configuration instance could be found
 * @see #setConfiguration
 */
protected FreeMarkerConfig autodetectConfiguration() throws BeansException {
	try {
		return BeanFactoryUtils.beanOfTypeIncludingAncestors(
				obtainApplicationContext(), FreeMarkerConfig.class, true, false);
	}
	catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException(
				"Must define a single FreeMarkerConfig bean in this web application context " +
						"(may be inherited): FreeMarkerConfigurer is the usual implementation. " +
						"This bean may be given any name.", ex);
	}
}
 

protected ScriptTemplateConfig autodetectViewConfig() throws BeansException {
	try {
		return BeanFactoryUtils.beanOfTypeIncludingAncestors(
				obtainApplicationContext(), ScriptTemplateConfig.class, true, false);
	}
	catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException("Expected a single ScriptTemplateConfig bean in the current " +
				"Servlet web application context or the parent root context: ScriptTemplateConfigurer is " +
				"the usual implementation. This bean may have any name.", ex);
	}
}
 

/**
 * Autodetect a {@link FreeMarkerConfig} object via the ApplicationContext.
 * @return the Configuration instance to use for FreeMarkerViews
 * @throws BeansException if no Configuration instance could be found
 * @see #getApplicationContext
 * @see #setConfiguration
 */
protected FreeMarkerConfig autodetectConfiguration() throws BeansException {
	try {
		return BeanFactoryUtils.beanOfTypeIncludingAncestors(
				obtainApplicationContext(), FreeMarkerConfig.class, true, false);
	}
	catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException(
				"Must define a single FreeMarkerConfig bean in this web application context " +
				"(may be inherited): FreeMarkerConfigurer is the usual implementation. " +
				"This bean may be given any name.", ex);
	}
}
 

@Bean
public NacosConfigProperties nacosConfigProperties(ApplicationContext context) {
	if (context.getParent() != null
			&& BeanFactoryUtils.beanNamesForTypeIncludingAncestors(
					context.getParent(), NacosConfigProperties.class).length > 0) {
		return BeanFactoryUtils.beanOfTypeIncludingAncestors(context.getParent(),
				NacosConfigProperties.class);
	}
	return new NacosConfigProperties();
}
 

protected ScriptTemplateConfig autodetectViewConfig() throws BeansException {
	try {
		return BeanFactoryUtils.beanOfTypeIncludingAncestors(
				getApplicationContext(), ScriptTemplateConfig.class, true, false);
	}
	catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException("Expected a single ScriptTemplateConfig bean in the current " +
				"Servlet web application context or the parent root context: ScriptTemplateConfigurer is " +
				"the usual implementation. This bean may have any name.", ex);
	}
}
 

/**
 * Autodetect a {@link FreeMarkerConfig} object via the ApplicationContext.
 * @return the Configuration instance to use for FreeMarkerViews
 * @throws BeansException if no Configuration instance could be found
 * @see #getApplicationContext
 * @see #setConfiguration
 */
protected FreeMarkerConfig autodetectConfiguration() throws BeansException {
	try {
		return BeanFactoryUtils.beanOfTypeIncludingAncestors(
				getApplicationContext(), FreeMarkerConfig.class, true, false);
	}
	catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException(
				"Must define a single FreeMarkerConfig bean in this web application context " +
				"(may be inherited): FreeMarkerConfigurer is the usual implementation. " +
				"This bean may be given any name.", ex);
	}
}
 

/**
 * Autodetect a VelocityEngine via the ApplicationContext.
 * Called if no explicit VelocityEngine has been specified.
 * @return the VelocityEngine to use for VelocityViews
 * @throws BeansException if no VelocityEngine could be found
 * @see #getApplicationContext
 * @see #setVelocityEngine
 */
protected VelocityEngine autodetectVelocityEngine() throws BeansException {
	try {
		VelocityConfig velocityConfig = BeanFactoryUtils.beanOfTypeIncludingAncestors(
				getApplicationContext(), VelocityConfig.class, true, false);
		return velocityConfig.getVelocityEngine();
	}
	catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException(
				"Must define a single VelocityConfig bean in this web application context " +
				"(may be inherited): VelocityConfigurer is the usual implementation. " +
				"This bean may be given any name.", ex);
	}
}
 

/**
 * Autodetect a VelocityEngine via the ApplicationContext. Called if no explicit VelocityEngine has been specified.
 *
 * @return the VelocityEngine to use for VelocityViews
 * @throws BeansException if no VelocityEngine could be found
 * @see #getApplicationContext
 * @see #setVelocityEngine
 */
protected VelocityEngine autodetectVelocityEngine() throws BeansException {
	try {
		VelocityConfig velocityConfig = BeanFactoryUtils.beanOfTypeIncludingAncestors(
				getApplicationContext(), VelocityConfig.class, true, false);
		return velocityConfig.getVelocityEngine();
	} catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException(
				"Must define a single VelocityConfig bean in this web application context "
				+ "(may be inherited): VelocityConfigurer is the usual implementation. "
				+ "This bean may be given any name.", ex);
	}
}
 

protected ScriptTemplateConfig autodetectViewConfig() throws BeansException {
	try {
		return BeanFactoryUtils.beanOfTypeIncludingAncestors(
				getApplicationContext(), ScriptTemplateConfig.class, true, false);
	}
	catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException("Expected a single ScriptTemplateConfig bean in the current " +
				"Servlet web application context or the parent root context: ScriptTemplateConfigurer is " +
				"the usual implementation. This bean may have any name.", ex);
	}
}
 

/**
 * Autodetect a {@link FreeMarkerConfig} object via the ApplicationContext.
 * @return the Configuration instance to use for FreeMarkerViews
 * @throws BeansException if no Configuration instance could be found
 * @see #getApplicationContext
 * @see #setConfiguration
 */
protected FreeMarkerConfig autodetectConfiguration() throws BeansException {
	try {
		return BeanFactoryUtils.beanOfTypeIncludingAncestors(
				getApplicationContext(), FreeMarkerConfig.class, true, false);
	}
	catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException(
				"Must define a single FreeMarkerConfig bean in this web application context " +
				"(may be inherited): FreeMarkerConfigurer is the usual implementation. " +
				"This bean may be given any name.", ex);
	}
}
 

/**
 * Autodetect a VelocityEngine via the ApplicationContext.
 * Called if no explicit VelocityEngine has been specified.
 * @return the VelocityEngine to use for VelocityViews
 * @throws BeansException if no VelocityEngine could be found
 * @see #getApplicationContext
 * @see #setVelocityEngine
 */
protected VelocityEngine autodetectVelocityEngine() throws BeansException {
	try {
		VelocityConfig velocityConfig = BeanFactoryUtils.beanOfTypeIncludingAncestors(
				getApplicationContext(), VelocityConfig.class, true, false);
		return velocityConfig.getVelocityEngine();
	}
	catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException(
				"Must define a single VelocityConfig bean in this web application context " +
				"(may be inherited): VelocityConfigurer is the usual implementation. " +
				"This bean may be given any name.", ex);
	}
}
 

@Bean
public ConfigClientProperties configClientProperties(Environment environment,
		ApplicationContext context) {
	if (context.getParent() != null
			&& BeanFactoryUtils.beanNamesForTypeIncludingAncestors(
					context.getParent(), ConfigClientProperties.class).length > 0) {
		return BeanFactoryUtils.beanOfTypeIncludingAncestors(context.getParent(),
				ConfigClientProperties.class);
	}
	ConfigClientProperties client = new ConfigClientProperties(environment);
	return client;
}
 

@Override
public void onApplicationEvent(ContextRefreshedEvent event) {
    if (event.getApplicationContext().equals(applicationContext)) {
        CrudRepository albumRepository =
                BeanFactoryUtils.beanOfTypeIncludingAncestors(applicationContext, CrudRepository.class);

        if (albumRepository != null && albumRepository.count() == 0) {
            populate(albumRepository);
        }
    }

}
 

/**
 * 自动检测FreeMarkerConfig
 * 
 * @return
 * @throws BeansException
 */
protected FreeMarkerConfig autodetectConfiguration() throws BeansException {
	try {
		return (FreeMarkerConfig) BeanFactoryUtils
				.beanOfTypeIncludingAncestors(getApplicationContext(),
						FreeMarkerConfig.class, true, false);
	} catch (NoSuchBeanDefinitionException ex) {
		throw new ApplicationContextException(
				"Must define a single FreeMarkerConfig bean in this web application context "
						+ "(may be inherited): FreeMarkerConfigurer is the usual implementation. "
						+ "This bean may be given any name.", ex);
	}
}
 

@Override
public void init() throws ServletException {
	WebApplicationContext appCtx = WebApplicationContextUtils
			.getWebApplicationContext(getServletContext());
	dbFileMng = BeanFactoryUtils.beanOfTypeIncludingAncestors(appCtx,
			DbFileMng.class);
}