spring不通过注入的方式获取对象(BeanFactoryAware \ApplicationContextAware )

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方式一:

实现 BeanFactoryAware 接口
重写setBeanFactory(BeanFactory beanFactory)方法:

private BeanFactory beanFactory;@Override    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {        this.beanFactory = beanFactory;    }

通过beanFactory获取对象

this.beanFactory.getBean(Class<T> clazz);

方式二:

实现ApplicationContextAware 接口
重写setApplicationContext(ApplicationContext applicationcontext)方法:

private static ApplicationContext applicationcontext;@Override    public void setApplicationContext(ApplicationContext applicationcontext)            throws BeansException {        this.applicationcontext = applicationcontext;    }

通过ApplicationContext 获取对象

this.appilication.getBean(Class<T> clazz);

方式三:

通过传统的Application程序:

ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("springConfig_bean.xml");        Bean bean= (Bean) context.getBean("bean");

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