Spring源码学习--AbstractRefreshableWebApplicationContext（五）

谁践踏了优雅 2022-07-13 18:22 191阅读 0赞

ApplicationContext应用上下文体系如下：

![Image 1][]

上一篇博客[ Spring源码学习--XmlWebApplicationContext（四）][Spring_--XmlWebApplicationContext]中我们已经简单介绍了一下web容器相关的应用上下文，AbstractRefreshableWebApplicationContext抽象类中并没有太多的操作，更多的是一些get和set操作，主要包括ServletContext（应用上下文就保存其中）和一些主题Theme相关。

完整源码如下：

public abstract class AbstractRefreshableWebApplicationContext extends AbstractRefreshableConfigApplicationContext
    		implements ConfigurableWebApplicationContext, ThemeSource {
    	//servlet上下文
    	private ServletContext servletContext;
    	//配置
    	private ServletConfig servletConfig;
    	/** Namespace of this context, or {@code null} if root */
    	private String namespace;
    	//主题资源
    	private ThemeSource themeSource;
    	public AbstractRefreshableWebApplicationContext() {
    		setDisplayName("Root WebApplicationContext");
    	}
    	@Override
    	public void setServletContext(ServletContext servletContext) {
    		this.servletContext = servletContext;
    	}
    	@Override
    	public ServletContext getServletContext() {
    		return this.servletContext;
    	}
    	@Override
    	public void setServletConfig(ServletConfig servletConfig) {
    		this.servletConfig = servletConfig;
    		if (servletConfig != null && this.servletContext == null) {
    			setServletContext(servletConfig.getServletContext());
    		}
    	}
    	@Override
    	public ServletConfig getServletConfig() {
    		return this.servletConfig;
    	}
    	@Override
    	public void setNamespace(String namespace) {
    		this.namespace = namespace;
    		if (namespace != null) {
    			setDisplayName("WebApplicationContext for namespace '" + namespace + "'");
    		}
    	}
    	@Override
    	public String getNamespace() {
    		return this.namespace;
    	}
    	@Override
    	public String[] getConfigLocations() {
    		return super.getConfigLocations();
    	}
    	@Override
    	public String getApplicationName() {
    		return (this.servletContext != null ? this.servletContext.getContextPath() : "");
    	}
    	@Override
    	protected ConfigurableEnvironment createEnvironment() {
    		return new StandardServletEnvironment();
    	}
    	@Override
    	protected void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) {
    		beanFactory.addBeanPostProcessor(new ServletContextAwareProcessor(this.servletContext, this.servletConfig));
    		beanFactory.ignoreDependencyInterface(ServletContextAware.class);
    		beanFactory.ignoreDependencyInterface(ServletConfigAware.class);
    
    		WebApplicationContextUtils.registerWebApplicationScopes(beanFactory, this.servletContext);
    		WebApplicationContextUtils.registerEnvironmentBeans(beanFactory, this.servletContext, this.servletConfig);
    	}
    	@Override
    	protected Resource getResourceByPath(String path) {
    		return new ServletContextResource(this.servletContext, path);
    	}
    	@Override
    	protected ResourcePatternResolver getResourcePatternResolver() {
    		return new ServletContextResourcePatternResolver(this);
    	}
    	@Override
    	protected void onRefresh() {
    		this.themeSource = UiApplicationContextUtils.initThemeSource(this);
    	}
    	@Override
    	protected void initPropertySources() {
    		ConfigurableEnvironment env = getEnvironment();
    		if (env instanceof ConfigurableWebEnvironment) {
    			((ConfigurableWebEnvironment) env).initPropertySources(this.servletContext, this.servletConfig);
    		}
    	}
    	@Override
    	public Theme getTheme(String themeName) {
    		return this.themeSource.getTheme(themeName);
    	}
    }

[Image 1]: 
[Spring_--XmlWebApplicationContext]: http://blog.csdn.net/qq924862077/article/details/59090521