Spring源码学习--XmlWebApplicationContext（四）

来源：互联网发布：凯立德导航端口怎么看编辑：程序博客网时间：2024/04/29 23:27

ApplicationContext应用上下文体系如下：

XmlWebApplicationContext是用于web容器的应用上下文的，其也没有太多操作，主要还是applicationContext.xml的解析操作，完整源码如下

public class XmlWebApplicationContext extends AbstractRefreshableWebApplicationContext {/** Default config location for the root context *///默认配置文件地址public static final String DEFAULT_CONFIG_LOCATION = "/WEB-INF/applicationContext.xml";/** Default prefix for building a config location for a namespace */public static final String DEFAULT_CONFIG_LOCATION_PREFIX = "/WEB-INF/";/** Default suffix for building a config location for a namespace */public static final String DEFAULT_CONFIG_LOCATION_SUFFIX = ".xml";//解析applicationContext.xml@Overrideprotected void loadBeanDefinitions(DefaultListableBeanFactory beanFactory) throws BeansException, IOException {// Create a new XmlBeanDefinitionReader for the given BeanFactory.XmlBeanDefinitionReader beanDefinitionReader = new XmlBeanDefinitionReader(beanFactory);// Configure the bean definition reader with this context's// resource loading environment.beanDefinitionReader.setEnvironment(getEnvironment());beanDefinitionReader.setResourceLoader(this);beanDefinitionReader.setEntityResolver(new ResourceEntityResolver(this));// Allow a subclass to provide custom initialization of the reader,// then proceed with actually loading the bean definitions.initBeanDefinitionReader(beanDefinitionReader);loadBeanDefinitions(beanDefinitionReader);}protected void initBeanDefinitionReader(XmlBeanDefinitionReader beanDefinitionReader) {}protected void loadBeanDefinitions(XmlBeanDefinitionReader reader) throws IOException {String[] configLocations = getConfigLocations();if (configLocations != null) {for (String configLocation : configLocations) {reader.loadBeanDefinitions(configLocation);}}}//获取默认配置文件地址@Overrideprotected String[] getDefaultConfigLocations() {if (getNamespace() != null) {return new String[] {DEFAULT_CONFIG_LOCATION_PREFIX + getNamespace() + DEFAULT_CONFIG_LOCATION_SUFFIX};}else {return new String[] {DEFAULT_CONFIG_LOCATION};}}}

2 1