BeanFactory接口：
用于访问SpringBean容器的根接口,这个接口是由持有许多bean定义的对象实现的，每个定义都由一个字符串名称唯一标识。根据bean定义，工厂将返回包含对象的独立实例（原型设计模式）或单个共享实例（与工厂范围内的单例实例为单例的单例设计模式相比，这是一种更好的选择）。BeanFactory是应用程序组件的中心注册表，并集中应用程序组件的配置。
String[] |
getAliases(String name) Return the aliases for the given bean name, if any. |
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getBean(Class<T> requiredType) Return the bean instance that uniquely matches the given object type, if any. |
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Object |
getBean(String name) Return an instance, which may be shared or independent, of the specified bean. |
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getBean(String name, Class<T> requiredType) Return an instance, which may be shared or independent, of the specified bean. |
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Object |
getBean(String name, Object... args) Return an instance, which may be shared or independent, of the specified bean. |
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Class<?> |
getType(String name) Determine the type of the bean with the given name. |
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boolean |
isPrototype(String name) Is this bean a prototype? That is, will getBean(java.lang.String) always return independent instances? |
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boolean |
isSingleton(String name) Is this bean a shared singleton? That is, will getBean(java.lang.String) always return the same instance? |
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boolean |
isTypeMatch(String name, Class<?> targetType) Check whether the bean with the given name matches the specified type. |
原文：https://www.cnblogs.com/yaohuiqin/p/10435356.html