applicationContext获取

最新推荐文章于 2025-08-23 19:36:46 发布

原创最新推荐文章于 2025-08-23 19:36:46 发布 · 134 阅读

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本文详细探讨了在Spring Web应用中如何通过不同方式获取WebApplicationContext，包括使用Session、ServletContext监听器、当前线程上下文以及XML配置文件加载上下文的方法。同时介绍了在独立应用程序中使用ClassPathXmlApplicationContext和FileSystemXmlApplicationContext实例化上下文的实践。

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//自己：
request.getSession().getServletContext().getAttribute("org.springframework.web.context.WebApplicationContext.ROOT")
//官方：
public class MyInitializer implements ServletContextListener {

	public void contextDestroyed(ServletContextEvent sce) {
		// TODO Auto-generated method stub
		
	}

	public void contextInitialized(ServletContextEvent sce) {
		ApplicationContext ac = WebApplicationContextUtils.getWebApplicationContext(sce.getServletContext());  //sce---ServletContextEvent
		
	}

	
}

在web中如：servlet

WebApplicationContext context = ContextLoader.getCurrentWebApplicationContext();

//source
public static WebApplicationContext getCurrentWebApplicationContext() {
		
	return (WebApplicationContext) currentContextPerThread.get(Thread.currentThread().getContextClassLoader());
	
}

public class MyApplicationHelper implements ApplicationContextAware {

	
		
	private ApplicationContext applicationContext;	
	public void setApplicationContext(ApplicationContext applicationContext)
 throws BeansException {
			
		this.applicationContext = applicationContext;
	
	}

	
	
	public  ApplicationContext getApplicationContext(){
		return this.applicationContext;
	
	}

}

main独立应用程序中

ApplicationContext ac = new ClassPathXmlApplicationContext(new String[]{"applicationContext.xml","applicationContext-test.xml"});

ApplicationContext ac = new ClassPathXmlApplicationContext("classpath*:/applicationContext*.xml");

ApplicationContext ac = new ClassPathXmlApplicationContext("classpath*:src/folder/applicationContext*.xml");

ApplicationContext ac = new FileSystemXmlApplicationContext("WebRoot/WEB-INF/applicationContext.xml");

ApplicationContext ac = new FileSystemXmlApplicationContext("file:D:/workspace/testproject/WebRoot/WEB-INF/applicationContext.xml");