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AbstractRefreshableWebApplicationContext (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

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org.springframework.web.context.support
Class AbstractRefreshableWebApplicationContext

java.lang.Object
  extended by org.springframework.core.io.DefaultResourceLoader
      extended by org.springframework.context.support.AbstractApplicationContext
          extended by org.springframework.context.support.AbstractRefreshableApplicationContext
              extended by org.springframework.web.context.support.AbstractRefreshableWebApplicationContext
All Implemented Interfaces:
BeanFactory, DisposableBean, HierarchicalBeanFactory, ListableBeanFactory, ApplicationContext, ApplicationEventPublisher, ConfigurableApplicationContext, Lifecycle, MessageSource, ResourceLoader, ResourcePatternResolver, ThemeSource, ConfigurableWebApplicationContext, WebApplicationContext
Direct Known Subclasses:
XmlWebApplicationContext
public abstract class AbstractRefreshableWebApplicationContext
extends AbstractRefreshableApplicationContext
implements ConfigurableWebApplicationContext, ThemeSource

AbstractRefreshableApplicationContext subclass which implements the ConfigurableWebApplicationContext interface for web environments. Provides a "configLocations" property, to be populated through the ConfigurableWebApplicationContext interface on web application startup.

This class is as easy to subclass as AbstractRefreshableApplicationContext: All you need to implements is the AbstractRefreshableApplicationContext.loadBeanDefinitions(org.springframework.beans.factory.support.DefaultListableBeanFactory) method; see the superclass javadoc for details. Note that implementations are supposed to load bean definitions from the files specified by the locations returned by the getConfigLocations() method.

Interprets resource paths as servlet context resources, i.e. as paths beneath the web application root. Absolute paths, e.g. for files outside the web app root, can be accessed via "file:" URLs, as implemented by DefaultResourceLoader.

In addition to the special beans detected by AbstractApplicationContext, this class detects a bean of type ThemeSource in the context, under the special bean name "themeSource".

This is the web context to be subclassed for a different bean definition format. Such a context implementation can be specified as "contextClass" context-param for ContextLoader or as "contextClass" init-param for FrameworkServlet, replacing the default XmlWebApplicationContext. It will then automatically receive the "contextConfigLocation" context-param or init-param, respectively.

Note that WebApplicationContext implementations are generally supposed to configure themselves based on the configuration received through the ConfigurableWebApplicationContext interface. In contrast, a standalone application context might allow for configuration in custom startup code (for example, GenericApplicationContext).

Since:
1.1.3
Author:
Juergen Hoeller
See Also:
AbstractRefreshableApplicationContext.loadBeanDefinitions(org.springframework.beans.factory.support.DefaultListableBeanFactory), ConfigurableWebApplicationContext.setConfigLocations(java.lang.String[]), ThemeSource, XmlWebApplicationContext

Field Summary
 
Fields inherited from class org.springframework.context.support.AbstractApplicationContext
APPLICATION_EVENT_MULTICASTER_BEAN_NAME, logger, MESSAGE_SOURCE_BEAN_NAME
 
Fields inherited from interface org.springframework.web.context.ConfigurableWebApplicationContext
CONFIG_LOCATION_DELIMITERS
 
Fields inherited from interface org.springframework.web.context.WebApplicationContext
ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE, SCOPE_GLOBAL_SESSION, SCOPE_REQUEST, SCOPE_SESSION
 
Fields inherited from interface org.springframework.beans.factory.BeanFactory
FACTORY_BEAN_PREFIX
 
Fields inherited from interface org.springframework.core.io.support.ResourcePatternResolver
CLASSPATH_ALL_URL_PREFIX
 
Fields inherited from interface org.springframework.core.io.ResourceLoader
CLASSPATH_URL_PREFIX
 
Constructor Summary
AbstractRefreshableWebApplicationContext()
           
 
Method Summary
 String[] getConfigLocations()
          Return the config locations for this web application context, or null if none specified.
protected  String[] getDefaultConfigLocations()
          Return the default config locations to use, for the case where no explicit config locations have been specified.
 String getNamespace()
          Return the namespace for this web application context, if any.
protected  Resource getResourceByPath(String path)
          This implementation supports file paths beneath the root of the ServletContext.
protected  ResourcePatternResolver getResourcePatternResolver()
          This implementation supports pattern matching in unexpanded WARs too.
 ServletConfig getServletConfig()
          Return the ServletConfig for this web application context, if any.
 ServletContext getServletContext()
          Return the standard Servlet API ServletContext for this application.
 Theme getTheme(String themeName)
          Return the Theme instance for the given theme name.
protected  void onRefresh()
          Initialize the theme capability.
protected  void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory)
          Register request/session scopes, a ServletContextAwareProcessor, etc.
protected  String resolvePath(String path)
          Resolve the given path, replacing placeholders with corresponding system property values if necessary.
 void setConfigLocations(String[] locations)
          Set the config locations for this web application context.
 void setNamespace(String namespace)
          Set the namespace for this web application context, to be used for building a default context config location.
 void setServletConfig(ServletConfig servletConfig)
          Set the ServletConfig for this web application context.
 void setServletContext(ServletContext servletContext)
          Set the ServletContext for this web application context.
 
Methods inherited from class org.springframework.context.support.AbstractRefreshableApplicationContext
closeBeanFactory, createBeanFactory, customizeBeanFactory, getBeanFactory, loadBeanDefinitions, refreshBeanFactory
 
Methods inherited from class org.springframework.context.support.AbstractApplicationContext
addApplicationListener, addBeanFactoryPostProcessor, addListener, close, containsBean, containsBeanDefinition, containsLocalBean, destroy, destroyBeans, doClose, getAliases, getApplicationListeners, getAutowireCapableBeanFactory, getBean, getBean, getBeanDefinitionCount, getBeanDefinitionNames, getBeanFactoryPostProcessors, getBeanNamesForType, getBeanNamesForType, getBeansOfType, getBeansOfType, getDisplayName, getInternalParentBeanFactory, getInternalParentMessageSource, getLifecycleBeans, getMessage, getMessage, getMessage, getParent, getParentBeanFactory, getResources, getStartupDate, getType, initApplicationEventMulticaster, initMessageSource, invokeBeanFactoryPostProcessors, isActive, isPrototype, isRunning, isSingleton, isTypeMatch, obtainFreshBeanFactory, onClose, prepareBeanFactory, prepareRefresh, publishEvent, refresh, registerBeanPostProcessors, registerListeners, registerShutdownHook, setDisplayName, setParent, start, stop, toString
 
Methods inherited from class org.springframework.core.io.DefaultResourceLoader
getClassLoader, getResource, setClassLoader
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface org.springframework.context.ConfigurableApplicationContext
addApplicationListener, addBeanFactoryPostProcessor, close, getBeanFactory, isActive, refresh, registerShutdownHook, setParent
 
Methods inherited from interface org.springframework.context.ApplicationContext
getAutowireCapableBeanFactory, getDisplayName, getParent, getStartupDate
 
Methods inherited from interface org.springframework.beans.factory.ListableBeanFactory
containsBeanDefinition, getBeanDefinitionCount, getBeanDefinitionNames, getBeanNamesForType, getBeanNamesForType, getBeansOfType, getBeansOfType
 
Methods inherited from interface org.springframework.beans.factory.HierarchicalBeanFactory
containsLocalBean, getParentBeanFactory
 
Methods inherited from interface org.springframework.beans.factory.BeanFactory
containsBean, getAliases, getBean, getBean, getType, isPrototype, isSingleton, isTypeMatch
 
Methods inherited from interface org.springframework.context.MessageSource
getMessage, getMessage, getMessage
 
Methods inherited from interface org.springframework.context.ApplicationEventPublisher
publishEvent
 
Methods inherited from interface org.springframework.core.io.support.ResourcePatternResolver
getResources
 
Methods inherited from interface org.springframework.core.io.ResourceLoader
getClassLoader, getResource
 
Methods inherited from interface org.springframework.context.Lifecycle
isRunning, start, stop
 

Constructor Detail

AbstractRefreshableWebApplicationContext

public AbstractRefreshableWebApplicationContext()
Method Detail

setServletContext

public void setServletContext(ServletContext servletContext)
Description copied from interface: ConfigurableWebApplicationContext
Set the ServletContext for this web application context.

Does not cause an initialization of the context: refresh needs to be called after the setting of all configuration properties.

Specified by:
setServletContext in interface ConfigurableWebApplicationContext
See Also:
ConfigurableApplicationContext.refresh()

getServletContext

public ServletContext getServletContext()
Description copied from interface: WebApplicationContext
Return the standard Servlet API ServletContext for this application.

Specified by:
getServletContext in interface WebApplicationContext

setServletConfig

public void setServletConfig(ServletConfig servletConfig)
Description copied from interface: ConfigurableWebApplicationContext
Set the ServletConfig for this web application context. Only called for a WebApplicationContext that belongs to a specific Servlet.

Specified by:
setServletConfig in interface ConfigurableWebApplicationContext
See Also:
ConfigurableApplicationContext.refresh()

getServletConfig

public ServletConfig getServletConfig()
Description copied from interface: ConfigurableWebApplicationContext
Return the ServletConfig for this web application context, if any.

Specified by:
getServletConfig in interface ConfigurableWebApplicationContext

setNamespace

public void setNamespace(String namespace)
Description copied from interface: ConfigurableWebApplicationContext
Set the namespace for this web application context, to be used for building a default context config location. The root web application context does not have a namespace.

Specified by:
setNamespace in interface ConfigurableWebApplicationContext

getNamespace

public String getNamespace()
Description copied from interface: ConfigurableWebApplicationContext
Return the namespace for this web application context, if any.

Specified by:
getNamespace in interface ConfigurableWebApplicationContext

setConfigLocations

public void setConfigLocations(String[] locations)
Description copied from interface: ConfigurableWebApplicationContext
Set the config locations for this web application context.

If not set, the implementation is supposed to use a default for the given namespace or the root web application context, as appropriate.

Specified by:
setConfigLocations in interface ConfigurableWebApplicationContext

getConfigLocations

public String[] getConfigLocations()
Description copied from interface: ConfigurableWebApplicationContext
Return the config locations for this web application context, or null if none specified.

Specified by:
getConfigLocations in interface ConfigurableWebApplicationContext

getDefaultConfigLocations

protected String[] getDefaultConfigLocations()
Return the default config locations to use, for the case where no explicit config locations have been specified.

The default implementation returns null, requiring explicit config locations.

See Also:
setConfigLocations(java.lang.String[])

postProcessBeanFactory

protected void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory)
Register request/session scopes, a ServletContextAwareProcessor, etc.

Overrides:
postProcessBeanFactory in class AbstractApplicationContext
Parameters:
beanFactory - the bean factory used by the application context

resolvePath

protected String resolvePath(String path)
Resolve the given path, replacing placeholders with corresponding system property values if necessary. Applied to config locations.

Parameters:
path - the original file path
Returns:
the resolved file path
See Also:
SystemPropertyUtils.resolvePlaceholders(java.lang.String)

getResourceByPath

protected Resource getResourceByPath(String path)
This implementation supports file paths beneath the root of the ServletContext.

Overrides:
getResourceByPath in class DefaultResourceLoader
Parameters:
path - path to the resource
Returns:
Resource handle
See Also:
ServletContextResource

getResourcePatternResolver

protected ResourcePatternResolver getResourcePatternResolver()
This implementation supports pattern matching in unexpanded WARs too.

Overrides:
getResourcePatternResolver in class AbstractApplicationContext
Returns:
the ResourcePatternResolver for this context
See Also:
ServletContextResourcePatternResolver

onRefresh

protected void onRefresh()
Initialize the theme capability.

Overrides:
onRefresh in class AbstractApplicationContext
See Also:
AbstractApplicationContext.refresh()

getTheme

public Theme getTheme(String themeName)
Description copied from interface: ThemeSource
Return the Theme instance for the given theme name. The returned Theme will resolve theme-specific messages, codes, file paths, etc (e.g. CSS and image files in a web environment).

Specified by:
getTheme in interface ThemeSource
Parameters:
themeName - name of the theme
Returns:
the respective Theme, or null if none defined
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