org.springframework.beans.factory.support

接口 InstantiationStrategy

所有已知实现类:

CglibSubclassingInstantiationStrategy, SimpleInstantiationStrategy

public interface InstantiationStrategy

Interface responsible for creating instances corresponding to a root bean definition.

This is pulled out into a strategy as various approaches are possible, including using CGLIB to create subclasses on the fly to support Method Injection.

从以下版本开始:

1.1

作者:

Rod Johnson, Juergen Hoeller

方法概要

限定符和类型	方法和说明
Object	instantiate(RootBeanDefinition bd, String beanName, BeanFactory owner) Return an instance of the bean with the given name in this factory.
Object	instantiate(RootBeanDefinition bd, String beanName, BeanFactory owner, Constructor<?> ctor, Object... args) Return an instance of the bean with the given name in this factory, creating it via the given constructor.
Object	instantiate(RootBeanDefinition bd, String beanName, BeanFactory owner, Object factoryBean, Method factoryMethod, Object... args) Return an instance of the bean with the given name in this factory, creating it via the given factory method.

方法详细资料

instantiate

Object instantiate(RootBeanDefinition bd,
                   @Nullable
                   String beanName,
                   BeanFactory owner)
            throws BeansException

Return an instance of the bean with the given name in this factory.

参数:

bd - the bean definition

beanName - the name of the bean when it is created in this context. The name can be null if we are autowiring a bean which doesn't belong to the factory.

owner - the owning BeanFactory

返回:

a bean instance for this bean definition

抛出:

BeansException - if the instantiation attempt failed

instantiate

Object instantiate(RootBeanDefinition bd,
                   @Nullable
                   String beanName,
                   BeanFactory owner,
                   Constructor<?> ctor,
                   @Nullable
                   Object... args)
            throws BeansException

Return an instance of the bean with the given name in this factory, creating it via the given constructor.

参数:

bd - the bean definition

beanName - the name of the bean when it is created in this context. The name can be null if we are autowiring a bean which doesn't belong to the factory.

owner - the owning BeanFactory

ctor - the constructor to use

args - the constructor arguments to apply

返回:

a bean instance for this bean definition

抛出:

BeansException - if the instantiation attempt failed

instantiate

Object instantiate(RootBeanDefinition bd,
                   @Nullable
                   String beanName,
                   BeanFactory owner,
                   @Nullable
                   Object factoryBean,
                   Method factoryMethod,
                   @Nullable
                   Object... args)
            throws BeansException

Return an instance of the bean with the given name in this factory, creating it via the given factory method.

参数:

bd - the bean definition

beanName - the name of the bean when it is created in this context. The name can be null if we are autowiring a bean which doesn't belong to the factory.

owner - the owning BeanFactory

factoryBean - the factory bean instance to call the factory method on, or null in case of a static factory method

factoryMethod - the factory method to use

args - the factory method arguments to apply

返回:

a bean instance for this bean definition

抛出:

BeansException - if the instantiation attempt failed