标签：img mode new doc try 学习 ble private 部分
1.Spring中最核心的两个类
1)DefaultListableBeanFactory
XmlBeanFactory继承自DefaultListableBeanFactory，DefaultListableBeanFactory是整个bean加载的核心部分，是Spring加载及注册bean的默认实现
2)XmlBeanDefinitionReader
2.示例代码
BeanFactory bf=new XmlBeanFactory(new ClassPathResource("beanFactoryTest.xml"));
XmlBeanFactory.class
public class XmlBeanFactory extends DefaultListableBeanFactory { private final XmlBeanDefinitionReader reader; public XmlBeanFactory(Resource resource) throws BeansException { this(resource, (BeanFactory)null); } public XmlBeanFactory(Resource resource, BeanFactory parentBeanFactory) throws BeansException { super(parentBeanFactory); this.reader = new XmlBeanDefinitionReader(this); this.reader.loadBeanDefinitions(resource); } }
public int loadBeanDefinitions(Resource resource) throws BeanDefinitionStoreException {
return this.loadBeanDefinitions(new EncodedResource(resource));
}
public int loadBeanDefinitions(EncodedResource encodedResource){
....
InputSource inputSource = new InputSource(inputStream);//通过SAX方式解析XML文件
....
this.doLoadBeanDefinitions(inputSource, encodedResource.getResource());
}
3.配置文件的封装
Resource implements InputStreamResource
4.AbstractAutowireCapableBeanFactory.ignoreDependencyInterface()
忽略给定接口的自动装配功能
5.加载Bean
protected int doLoadBeanDefinitions(InputSource inputSource, Resource resource) throws BeanDefinitionStoreException { try { int validationMode = this.getValidationModeForResource(resource);//获取xml文件的验证模式 Document doc = this.documentLoader.loadDocument(inputSource, this.getEntityResolver(), this.errorHandler, validationMode, this.isNamespaceAware());//加载XML文件 return this.registerBeanDefinitions(doc, resource);//返回注册bean的信息 } catch (BeanDefinitionStoreException var5) { throw var5; } catch (SAXParseException var6) { throw new XmlBeanDefinitionStoreException(resource.getDescription(), "Line " + var6.getLineNumber() + " in XML document from " + resource + " is invalid", var6); } catch (SAXException var7) { throw new XmlBeanDefinitionStoreException(resource.getDescription(), "XML document from " + resource + " is invalid", var7); } catch (ParserConfigurationException var8) { throw new BeanDefinitionStoreException(resource.getDescription(), "Parser configuration exception parsing XML from " + resource, var8); } catch (IOException var9) { throw new BeanDefinitionStoreException(resource.getDescription(), "IOException parsing XML document from " + resource, var9); } catch (Throwable var10) { throw new BeanDefinitionStoreException(resource.getDescription(), "Unexpected exception parsing XML document from " + resource, var10); } }
1)获取xml文件的验证模式
2)加载XML文件
3)返回注册bean的信息
标签：img mode new doc try 学习 ble private 部分
原文地址：https://www.cnblogs.com/lvjygogo/p/8974506.html
