public interface BeanFactory {
String FACTORY_BEAN_PREFIX = "&";
/**
*
*/
Object getBean(String name) throws BeansException;
/**
*
*/
<T> T getBean(String name, @Nullable Class<T> requiredType) throws BeansException;
/**
*
*/
Object getBean(String name, Object... args) throws BeansException;
/**
*
*/
<T> T getBean(Class<T> requiredType) throws BeansException;
/**
*
*/
<T> T getBean(Class<T> requiredType, Object... args) throws BeansException;
/**
*
*/
boolean containsBean(String name);
/**
*
*/
boolean isSingleton(String name) throws NoSuchBeanDefinitionException;
/**
*
*/
boolean isPrototype(String name) throws NoSuchBeanDefinitionException;
/**
*
*/
boolean isTypeMatch(String name, ResolvableType typeToMatch) throws NoSuchBeanDefinitionException;
/**
*
*/
boolean isTypeMatch(String name, @Nullable Class<?> typeToMatch) throws NoSuchBeanDefinitionException;
/**
*
*/
@Nullable
Class<?> getType(String name) throws NoSuchBeanDefinitionException;
/**
*
*/
String[] getAliases(String name);
}
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getBean
重载了(overload)5个getBean方法：可分为1.按照name获取bean。2.按照type获取bean。
其中getBean(String name,Object... args)与getBean(Class<T> requiredType,Object... args)方法需要注意后面的参数Object是构造方法的参数。另外bean的scope(bean在IOC容器中的生命周期)需要配置为prototype。