org.springframework.web.context.support
Class XmlWebApplicationContext

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.context.support.AbstractRefreshableConfigApplicationContext
                  extended by org.springframework.web.context.support.AbstractRefreshableWebApplicationContext
                      extended by org.springframework.web.context.support.XmlWebApplicationContext
All Implemented Interfaces:
BeanFactory, BeanNameAware, DisposableBean, HierarchicalBeanFactory, InitializingBean, ListableBeanFactory, ApplicationContext, ApplicationEventPublisher, ConfigurableApplicationContext, Lifecycle, MessageSource, ResourceLoader, ResourcePatternResolver, ThemeSource, ConfigurableWebApplicationContext, WebApplicationContext

public class XmlWebApplicationContext
extends AbstractRefreshableWebApplicationContext

WebApplicationContext implementation which takes its configuration from XML documents, understood by an XmlBeanDefinitionReader. This is essentially the equivalent of AbstractXmlApplicationContext for a web environment.

By default, the configuration will be taken from "/WEB-INF/applicationContext.xml" for the root context, and "/WEB-INF/test-servlet.xml" for a context with the namespace "test-servlet" (like for a DispatcherServlet instance with the servlet-name "test").

The config location defaults can be overridden via the "contextConfigLocation" context-param of ContextLoader and servlet init-param of FrameworkServlet. Config locations can either denote concrete files like "/WEB-INF/context.xml" or Ant-style patterns like "/WEB-INF/*-context.xml" (see PathMatcher javadoc for pattern details).

Note: In case of multiple config locations, later bean definitions will override ones defined in earlier loaded files. This can be leveraged to deliberately override certain bean definitions via an extra XML file.

For a WebApplicationContext that reads in a different bean definition format, create an analogous subclass of AbstractRefreshableWebApplicationContext. Such a context implementation can be specified as "contextClass" context-param for ContextLoader or "contextClass" init-param for FrameworkServlet.

Author:
Rod Johnson, Juergen Hoeller
See Also:
AbstractRefreshableWebApplicationContext.setNamespace(java.lang.String), AbstractRefreshableConfigApplicationContext.setConfigLocations(java.lang.String[]), XmlBeanDefinitionReader, ContextLoader.initWebApplicationContext(javax.servlet.ServletContext), FrameworkServlet.initWebApplicationContext()

Field Summary
static String DEFAULT_CONFIG_LOCATION
          Default config location for the root context
static String DEFAULT_CONFIG_LOCATION_PREFIX
          Default prefix for building a config location for a namespace
static String DEFAULT_CONFIG_LOCATION_SUFFIX
          Default suffix for building a config location for a namespace
 
Fields inherited from class org.springframework.context.support.AbstractApplicationContext
APPLICATION_EVENT_MULTICASTER_BEAN_NAME, LIFECYCLE_PROCESSOR_BEAN_NAME, logger, MESSAGE_SOURCE_BEAN_NAME
 
Fields inherited from interface org.springframework.web.context.ConfigurableWebApplicationContext
APPLICATION_CONTEXT_ID_PREFIX, SERVLET_CONFIG_BEAN_NAME
 
Fields inherited from interface org.springframework.web.context.WebApplicationContext
CONTEXT_ATTRIBUTES_BEAN_NAME, CONTEXT_PARAMETERS_BEAN_NAME, ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE, SCOPE_APPLICATION, SCOPE_GLOBAL_SESSION, SCOPE_REQUEST, SCOPE_SESSION, SERVLET_CONTEXT_BEAN_NAME
 
Fields inherited from interface org.springframework.context.ConfigurableApplicationContext
CONFIG_LOCATION_DELIMITERS, CONVERSION_SERVICE_BEAN_NAME, LOAD_TIME_WEAVER_BEAN_NAME, SYSTEM_ENVIRONMENT_BEAN_NAME, SYSTEM_PROPERTIES_BEAN_NAME
 
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
XmlWebApplicationContext()
           
 
Method Summary
protected  String[] getDefaultConfigLocations()
          The default location for the root context is "/WEB-INF/applicationContext.xml", and "/WEB-INF/test-servlet.xml" for a context with the namespace "test-servlet" (like for a DispatcherServlet instance with the servlet-name "test").
protected  void initBeanDefinitionReader(XmlBeanDefinitionReader beanDefinitionReader)
          Initialize the bean definition reader used for loading the bean definitions of this context.
protected  void loadBeanDefinitions(DefaultListableBeanFactory beanFactory)
          Loads the bean definitions via an XmlBeanDefinitionReader.
protected  void loadBeanDefinitions(XmlBeanDefinitionReader reader)
          Load the bean definitions with the given XmlBeanDefinitionReader.
 
Methods inherited from class org.springframework.web.context.support.AbstractRefreshableWebApplicationContext
getConfigLocations, getNamespace, getResourceByPath, getResourcePatternResolver, getServletConfig, getServletContext, getTheme, onRefresh, postProcessBeanFactory, setNamespace, setServletConfig, setServletContext
 
Methods inherited from class org.springframework.context.support.AbstractRefreshableConfigApplicationContext
afterPropertiesSet, resolvePath, setBeanName, setConfigLocation, setConfigLocations, setId
 
Methods inherited from class org.springframework.context.support.AbstractRefreshableApplicationContext
cancelRefresh, closeBeanFactory, createBeanFactory, customizeBeanFactory, getBeanFactory, hasBeanFactory, refreshBeanFactory, setAllowBeanDefinitionOverriding, setAllowCircularReferences
 
Methods inherited from class org.springframework.context.support.AbstractApplicationContext
addApplicationListener, addBeanFactoryPostProcessor, addListener, close, containsBean, containsBeanDefinition, containsLocalBean, destroy, destroyBeans, doClose, findAnnotationOnBean, finishBeanFactoryInitialization, finishRefresh, getAliases, getApplicationListeners, getAutowireCapableBeanFactory, getBean, getBean, getBean, getBean, getBeanDefinitionCount, getBeanDefinitionNames, getBeanFactoryPostProcessors, getBeanNamesForType, getBeanNamesForType, getBeansOfType, getBeansOfType, getBeansWithAnnotation, getBeansWithAnnotation, getDisplayName, getId, getInternalParentBeanFactory, getInternalParentMessageSource, getMessage, getMessage, getMessage, getParent, getParentBeanFactory, getResources, getStartupDate, getType, initApplicationEventMulticaster, initLifecycleProcessor, 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.web.context.ConfigurableWebApplicationContext
setConfigLocation, setConfigLocations
 
Methods inherited from interface org.springframework.context.ConfigurableApplicationContext
addApplicationListener, addBeanFactoryPostProcessor, close, getBeanFactory, isActive, refresh, registerShutdownHook, setId, setParent
 
Methods inherited from interface org.springframework.context.ApplicationContext
getAutowireCapableBeanFactory, getDisplayName, getId, getParent, getStartupDate
 
Methods inherited from interface org.springframework.beans.factory.ListableBeanFactory
containsBeanDefinition, findAnnotationOnBean, getBeanDefinitionCount, getBeanDefinitionNames, getBeanNamesForType, getBeanNamesForType, getBeansOfType, getBeansOfType, getBeansWithAnnotation, getBeansWithAnnotation
 
Methods inherited from interface org.springframework.beans.factory.HierarchicalBeanFactory
containsLocalBean, getParentBeanFactory
 
Methods inherited from interface org.springframework.beans.factory.BeanFactory
containsBean, getAliases, getBean, getBean, 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
 

Field Detail

DEFAULT_CONFIG_LOCATION

public static final String DEFAULT_CONFIG_LOCATION
Default config location for the root context

See Also:
Constant Field Values

DEFAULT_CONFIG_LOCATION_PREFIX

public static final String DEFAULT_CONFIG_LOCATION_PREFIX
Default prefix for building a config location for a namespace

See Also:
Constant Field Values

DEFAULT_CONFIG_LOCATION_SUFFIX

public static final String DEFAULT_CONFIG_LOCATION_SUFFIX
Default suffix for building a config location for a namespace

See Also:
Constant Field Values
Constructor Detail

XmlWebApplicationContext

public XmlWebApplicationContext()
Method Detail

loadBeanDefinitions

protected void loadBeanDefinitions(DefaultListableBeanFactory beanFactory)
                            throws BeansException,
                                   IOException
Loads the bean definitions via an XmlBeanDefinitionReader.

Specified by:
loadBeanDefinitions in class AbstractRefreshableApplicationContext
Parameters:
beanFactory - the bean factory to load bean definitions into
Throws:
BeansException - if parsing of the bean definitions failed
IOException - if loading of bean definition files failed
See Also:
XmlBeanDefinitionReader, initBeanDefinitionReader(org.springframework.beans.factory.xml.XmlBeanDefinitionReader), loadBeanDefinitions(org.springframework.beans.factory.support.DefaultListableBeanFactory)

initBeanDefinitionReader

protected void initBeanDefinitionReader(XmlBeanDefinitionReader beanDefinitionReader)
Initialize the bean definition reader used for loading the bean definitions of this context. Default implementation is empty.

Can be overridden in subclasses, e.g. for turning off XML validation or using a different XmlBeanDefinitionParser implementation.

Parameters:
beanDefinitionReader - the bean definition reader used by this context
See Also:
XmlBeanDefinitionReader.setValidationMode(int), XmlBeanDefinitionReader.setDocumentReaderClass(java.lang.Class)

loadBeanDefinitions

protected void loadBeanDefinitions(XmlBeanDefinitionReader reader)
                            throws IOException
Load the bean definitions with the given XmlBeanDefinitionReader.

The lifecycle of the bean factory is handled by the refreshBeanFactory method; therefore this method is just supposed to load and/or register bean definitions.

Delegates to a ResourcePatternResolver for resolving location patterns into Resource instances.

Throws:
IOException - if the required XML document isn't found
See Also:
AbstractRefreshableApplicationContext.refreshBeanFactory(), AbstractRefreshableWebApplicationContext.getConfigLocations(), AbstractApplicationContext.getResources(java.lang.String), AbstractRefreshableWebApplicationContext.getResourcePatternResolver()

getDefaultConfigLocations

protected String[] getDefaultConfigLocations()
The default location for the root context is "/WEB-INF/applicationContext.xml", and "/WEB-INF/test-servlet.xml" for a context with the namespace "test-servlet" (like for a DispatcherServlet instance with the servlet-name "test").

Overrides:
getDefaultConfigLocations in class AbstractRefreshableConfigApplicationContext
Returns:
an array of default config locations, if any
See Also:
AbstractRefreshableConfigApplicationContext.setConfigLocations(java.lang.String[])