import org.springframework.aop.framework.autoproxy.AutoProxyUtils; //导入依赖的package包/类
@Override
public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory)
		throws BeansException {
	String[] errorControllerBeans = beanFactory
			.getBeanNamesForType(ErrorController.class, false, false);
	for (String errorControllerBean : errorControllerBeans) {
		try {
			beanFactory.getBeanDefinition(errorControllerBean).setAttribute(
					AutoProxyUtils.PRESERVE_TARGET_CLASS_ATTRIBUTE, Boolean.TRUE);
		}
		catch (Throwable ex) {
			// Ignore
		}
	}
}
 

import org.springframework.aop.framework.autoproxy.AutoProxyUtils; //导入依赖的package包/类
/**
 * Generate a scoped proxy for the supplied target bean, registering the target
 * bean with an internal name and setting 'targetBeanName' on the scoped proxy.
 * @param definition the original bean definition
 * @param registry the bean definition registry
 * @param proxyTargetClass whether to create a target class proxy
 * @return the scoped proxy definition
 */
public static BeanDefinitionHolder createScopedProxy(BeanDefinitionHolder definition,
		BeanDefinitionRegistry registry, boolean proxyTargetClass) {

	String originalBeanName = definition.getBeanName();
	BeanDefinition targetDefinition = definition.getBeanDefinition();
	String targetBeanName = getTargetBeanName(originalBeanName);

	// Create a scoped proxy definition for the original bean name,
	// "hiding" the target bean in an internal target definition.
	RootBeanDefinition proxyDefinition = new RootBeanDefinition(ScopedProxyFactoryBean.class);
	proxyDefinition.setDecoratedDefinition(new BeanDefinitionHolder(targetDefinition, targetBeanName));
	proxyDefinition.setOriginatingBeanDefinition(targetDefinition);
	proxyDefinition.setSource(definition.getSource());
	proxyDefinition.setRole(targetDefinition.getRole());

	proxyDefinition.getPropertyValues().add("targetBeanName", targetBeanName);
	if (proxyTargetClass) {
		targetDefinition.setAttribute(AutoProxyUtils.PRESERVE_TARGET_CLASS_ATTRIBUTE, Boolean.TRUE);
		// ScopedProxyFactoryBean's "proxyTargetClass" default is TRUE, so we don't need to set it explicitly here.
	}
	else {
		proxyDefinition.getPropertyValues().add("proxyTargetClass", Boolean.FALSE);
	}

	// Copy autowire settings from original bean definition.
	proxyDefinition.setAutowireCandidate(targetDefinition.isAutowireCandidate());
	proxyDefinition.setPrimary(targetDefinition.isPrimary());
	if (targetDefinition instanceof AbstractBeanDefinition) {
		proxyDefinition.copyQualifiersFrom((AbstractBeanDefinition) targetDefinition);
	}

	// The target bean should be ignored in favor of the scoped proxy.
	targetDefinition.setAutowireCandidate(false);
	targetDefinition.setPrimary(false);

	// Register the target bean as separate bean in the factory.
	registry.registerBeanDefinition(targetBeanName, targetDefinition);

	// Return the scoped proxy definition as primary bean definition
	// (potentially an inner bean).
	return new BeanDefinitionHolder(proxyDefinition, originalBeanName, definition.getAliases());
}
 

import org.springframework.aop.framework.autoproxy.AutoProxyUtils; //导入依赖的package包/类
/**
 * Generate a scoped proxy for the supplied target bean, registering the target
 * bean with an internal name and setting 'targetBeanName' on the scoped proxy.
 * @param definition the original bean definition
 * @param registry the bean definition registry
 * @param proxyTargetClass whether to create a target class proxy
 * @return the scoped proxy definition
 */
public static BeanDefinitionHolder createScopedProxy(BeanDefinitionHolder definition,
		BeanDefinitionRegistry registry, boolean proxyTargetClass) {

	String originalBeanName = definition.getBeanName();
	BeanDefinition targetDefinition = definition.getBeanDefinition();
	String targetBeanName = getTargetBeanName(originalBeanName);

	// Create a scoped proxy definition for the original bean name,
	// "hiding" the target bean in an internal target definition.
	RootBeanDefinition proxyDefinition = new RootBeanDefinition(ScopedProxyFactoryBean.class);
	proxyDefinition.setDecoratedDefinition(new BeanDefinitionHolder(targetDefinition, targetBeanName));
	proxyDefinition.setOriginatingBeanDefinition(targetDefinition);
	proxyDefinition.setSource(definition.getSource());
	proxyDefinition.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);

	proxyDefinition.getPropertyValues().add("targetBeanName", targetBeanName);
	if (proxyTargetClass) {
		targetDefinition.setAttribute(AutoProxyUtils.PRESERVE_TARGET_CLASS_ATTRIBUTE, Boolean.TRUE);
		// ScopedProxyFactoryBean's "proxyTargetClass" default is TRUE, so we don't need to set it explicitly here.
	}
	else {
		proxyDefinition.getPropertyValues().add("proxyTargetClass", Boolean.FALSE);
	}

	// Copy autowire settings from original bean definition.
	proxyDefinition.setAutowireCandidate(targetDefinition.isAutowireCandidate());
	proxyDefinition.setPrimary(targetDefinition.isPrimary());
	if (targetDefinition instanceof AbstractBeanDefinition) {
		proxyDefinition.copyQualifiersFrom((AbstractBeanDefinition) targetDefinition);
	}

	// The target bean should be ignored in favor of the scoped proxy.
	targetDefinition.setAutowireCandidate(false);
	targetDefinition.setPrimary(false);

	// Register the target bean as separate bean in the factory.
	registry.registerBeanDefinition(targetBeanName, targetDefinition);

	// Return the scoped proxy definition as primary bean definition
	// (potentially an inner bean).
	return new BeanDefinitionHolder(proxyDefinition, originalBeanName, definition.getAliases());
}
 

import org.springframework.aop.framework.autoproxy.AutoProxyUtils; //导入依赖的package包/类
public static  BeanDefinitionHolder createSerializableProxy(BeanDefinitionHolder definition,
		BeanDefinitionRegistry registry, boolean proxyTargetClass) {

	String originalBeanName = definition.getBeanName();
	BeanDefinition targetDefinition = definition.getBeanDefinition();

	// Create a scoped proxy definition for the original bean name,
	// "hiding" the target bean in an internal target definition.
	RootBeanDefinition proxyDefinition = new RootBeanDefinition(SerializableProxyFactoryBean.class);
	proxyDefinition.setOriginatingBeanDefinition(definition.getBeanDefinition());
	proxyDefinition.setSource(definition.getSource());
	proxyDefinition.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);

	String targetBeanName = getTargetBeanName(originalBeanName);
	proxyDefinition.getPropertyValues().add("targetBeanName", targetBeanName);

	if (proxyTargetClass) {
		targetDefinition.setAttribute(AutoProxyUtils.PRESERVE_TARGET_CLASS_ATTRIBUTE, Boolean.TRUE);
	}
	else {
		proxyDefinition.getPropertyValues().add("proxyTargetClass", Boolean.FALSE);
	}

	// Copy autowire settings from original bean definition.
	proxyDefinition.setAutowireCandidate(targetDefinition.isAutowireCandidate());
	proxyDefinition.setPrimary(targetDefinition.isPrimary());
	if (targetDefinition instanceof AbstractBeanDefinition) {
		proxyDefinition.copyQualifiersFrom((AbstractBeanDefinition) targetDefinition);
	}
	
	// Set singleton property of FactoryBean
	proxyDefinition.getPropertyValues().add("singleton", !targetDefinition.isPrototype());

	// The target bean should be ignored in favor of the scoped proxy.
	targetDefinition.setAutowireCandidate(false);
	targetDefinition.setPrimary(false);

	// Register the target bean as separate bean in the factory.
	registry.registerBeanDefinition(targetBeanName, targetDefinition);

	// Return the scoped proxy definition as primary bean definition
	// (potentially an inner bean).
	return new BeanDefinitionHolder(proxyDefinition, originalBeanName, definition.getAliases());
}