1. BeanFactory 的结构体系如下：

2. XmlBeanFactory ，装载Spring配置信息

package org.springframework.beans.factory.xml;import org.springframework.beans.BeansException;import org.springframework.beans.factory.BeanFactory;import org.springframework.beans.factory.support.DefaultListableBeanFactory;import org.springframework.core.io.Resource;public class XmlBeanFactory extends DefaultListableBeanFactory {    private final XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(this);    /**     * Create a new XmlBeanFactory with the given resource,     * which must be parsable using DOM.     * @param resource XML resource to load bean definitions from     * @throws BeansException in case of loading or parsing errors     */    public XmlBeanFactory(Resource resource) throws BeansException {        this(resource, null);    }    /**     * Create a new XmlBeanFactory with the given input stream,     * which must be parsable using DOM.     * @param resource XML resource to load bean definitions from     * @param parentBeanFactory parent bean factory     * @throws BeansException in case of loading or parsing errors     */    public XmlBeanFactory(Resource resource, BeanFactory parentBeanFactory) throws BeansException {        super(parentBeanFactory);        this.reader.loadBeanDefinitions(resource);    }}

3. BeanFactory 接口

package org.springframework.beans.factory;import org.springframework.beans.BeansException;public interface BeanFactory {        String FACTORY_BEAN_PREFIX = "&";    Object getBean(String name) throws BeansException;        
     
       T getBean(String name, Class
      
        requiredType) throws BeansException;        
       
         T getBean(Class
        
          requiredType) throws BeansException;        Object getBean(String name, Object... args) throws BeansException;        boolean containsBean(String name);        boolean isSingleton(String name) throws NoSuchBeanDefinitionException;        boolean isPrototype(String name) throws NoSuchBeanDefinitionException;        boolean isTypeMatch(String name, Class targetType) throws NoSuchBeanDefinitionException;        Class
          getType(String name) throws NoSuchBeanDefinitionException;        String[] getAliases(String name);}
        
       
      
     

4. 运用实例：

Resource reource = null;//load spring configure fileBeanFactory bf = new XmlBeanFactory(reource);bf.getBean("beanName");