Spring中BeanFactory和FactoryBean区别

package org.springframework.beans.factory;

public interface FactoryBean<T> {
T getObject() throws Exception;

Class<?> getObjectType();

boolean isSingleton();
}

package org.springframework.beans.factory;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;

public interface BeanFactory {
String FACTORY_BEAN_PREFIX = "&";

Object getBean(String var1) throws BeansException;

<T> T getBean(String var1, Class<T> var2) throws BeansException;

<T> T getBean(Class<T> var1) throws BeansException;

Object getBean(String var1, Object... var2) throws BeansException;

boolean containsBean(String var1);

boolean isSingleton(String var1) throws NoSuchBeanDefinitionException;

boolean isPrototype(String var1) throws NoSuchBeanDefinitionException;

boolean isTypeMatch(String var1, Class<?> var2) throws NoSuchBeanDefinitionException;

Class<?> getType(String var1) throws NoSuchBeanDefinitionException;

String[] getAliases(String var1);
}