java.lang.Object
- org.springframework.web.context.ContextLoader
- - org.springframework.web.context.ContextLoaderListener

所有已实现的接口:
EventListener, ServletContextListener
```
public class ContextLoaderListener
extends ContextLoader
implements ServletContextListener
```
Bootstrap listener to start up and shut down Spring's root WebApplicationContext. Simply delegates to ContextLoader as well as to ContextCleanupListener.
This listener should be registered after Log4jConfigListener in web.xml, if the latter is used.
As of Spring 3.1, ContextLoaderListener supports injecting the root web application context via the ContextLoaderListener(WebApplicationContext) constructor, allowing for programmatic configuration in Servlet 3.0+ environments. See WebApplicationInitializer for usage examples.
从以下版本开始:
17.02.2003
作者:
Juergen Hoeller, Chris Beams
另请参阅:
ContextLoader.setContextInitializers(org.springframework.context.ApplicationContextInitializer<?>...), WebApplicationInitializer, Log4jConfigListener

字段概要
- 从类继承的字段 org.springframework.web.context.ContextLoader
  CONFIG_LOCATION_PARAM, CONTEXT_CLASS_PARAM, CONTEXT_ID_PARAM, CONTEXT_INITIALIZER_CLASSES_PARAM, GLOBAL_INITIALIZER_CLASSES_PARAM, LOCATOR_FACTORY_KEY_PARAM, LOCATOR_FACTORY_SELECTOR_PARAM

构造器概要

构造器
构造器	说明
`ContextLoaderListener()`	Create a new `ContextLoaderListener` that will create a web application context based on the "contextClass" and "contextConfigLocation" servlet context-params.
`ContextLoaderListener(WebApplicationContext context)`	Create a new `ContextLoaderListener` with the given application context.

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`void`	`contextDestroyed(ServletContextEvent event)`	Close the root web application context.
`void`	`contextInitialized(ServletContextEvent event)`	Initialize the root web application context.

从类继承的方法 org.springframework.web.context.ContextLoader
closeWebApplicationContext, configureAndRefreshWebApplicationContext, createWebApplicationContext, customizeContext, determineContextClass, determineContextInitializerClasses, getCurrentWebApplicationContext, initWebApplicationContext, loadParentContext, setContextInitializers

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - ContextLoaderListener
```
public ContextLoaderListener()
```
    Create a new ContextLoaderListener that will create a web application context based on the "contextClass" and "contextConfigLocation" servlet context-params. See ContextLoader superclass documentation for details on default values for each.
    This constructor is typically used when declaring ContextLoaderListener as a <listener> within web.xml, where a no-arg constructor is required.
    The created application context will be registered into the ServletContext under the attribute name WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE and the Spring application context will be closed when the contextDestroyed(javax.servlet.ServletContextEvent) lifecycle method is invoked on this listener.
    另请参阅:
    ContextLoader, ContextLoaderListener(WebApplicationContext), contextInitialized(ServletContextEvent), contextDestroyed(ServletContextEvent)
  - ContextLoaderListener
```
public ContextLoaderListener(WebApplicationContext context)
```
    Create a new ContextLoaderListener with the given application context. This constructor is useful in Servlet 3.0+ environments where instance-based registration of listeners is possible through the ServletContext.addListener(java.lang.String) API.
    The context may or may not yet be refreshed. If it (a) is an implementation of ConfigurableWebApplicationContext and (b) has not already been refreshed (the recommended approach), then the following will occur:
    If the given context has not already been assigned an id, one will be assigned to it
    ServletContext and ServletConfig objects will be delegated to the application context
    ContextLoader.customizeContext(javax.servlet.ServletContext, org.springframework.web.context.ConfigurableWebApplicationContext) will be called
    Any ApplicationContextInitializers specified through the "contextInitializerClasses" init-param will be applied.
    refresh() will be called
    If the context has already been refreshed or does not implement ConfigurableWebApplicationContext, none of the above will occur under the assumption that the user has performed these actions (or not) per his or her specific needs.
    See WebApplicationInitializer for usage examples.
    In any case, the given application context will be registered into the ServletContext under the attribute name WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE and the Spring application context will be closed when the contextDestroyed(javax.servlet.ServletContextEvent) lifecycle method is invoked on this listener.
    参数:
    context - the application context to manage
    另请参阅:
    contextInitialized(ServletContextEvent), contextDestroyed(ServletContextEvent)
- 方法详细资料
  - contextInitialized
```
public void contextInitialized(ServletContextEvent event)
```
    Initialize the root web application context.
    指定者:
    contextInitialized 在接口中 ServletContextListener
  - contextDestroyed
```
public void contextDestroyed(ServletContextEvent event)
```
    Close the root web application context.
    指定者:
    contextDestroyed 在接口中 ServletContextListener

类 ContextLoaderListener

字段概要

从类继承的字段 org.springframework.web.context.ContextLoader

构造器概要

方法概要

从类继承的方法 org.springframework.web.context.ContextLoader

从类继承的方法 java.lang.Object

构造器详细资料

ContextLoaderListener

ContextLoaderListener

方法详细资料

contextInitialized

contextDestroyed