org.springframework.web.context.support
Class XmlWebApplicationContext

java.lang.Object
  org.springframework.core.io.DefaultResourceLoader
      org.springframework.context.support.AbstractApplicationContext
          org.springframework.context.support.AbstractRefreshableApplicationContext
              org.springframework.web.context.support.AbstractRefreshableWebApplicationContext
                  org.springframework.web.context.support.XmlWebApplicationContext

All Implemented Interfaces:

ApplicationContext, ApplicationEventPublisher, BeanFactory, ConfigurableApplicationContext, ConfigurableWebApplicationContext, HierarchicalBeanFactory, ListableBeanFactory, MessageSource, ResourceLoader, ResourcePatternResolver, ThemeSource, WebApplicationContext

public class XmlWebApplicationContext

extends AbstractRefreshableWebApplicationContext

WebApplicationContext implementation that takes configuration from an XML document, understood by an XmlBeanDefinitionReader. This is essentially the equivalent of AbstractXmlApplicationContext and its subclasses 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 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), AbstractRefreshableWebApplicationContext.setConfigLocations(java.lang.String[]), XmlBeanDefinitionReader, AbstractXmlApplicationContext, ContextLoader.initWebApplicationContext(javax.servlet.ServletContext), FrameworkServlet.initWebApplicationContext(), ContextLoader.CONTEXT_CLASS_PARAM, FrameworkServlet.setContextClass(java.lang.Class)

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, 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

Fields inherited from interface org.springframework.beans.factory.BeanFactory

FACTORY_BEAN_PREFIX

Fields inherited from interface org.springframework.core.io.support.ResourcePatternResolver

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, getServletContext, getTheme, onRefresh, postProcessBeanFactory, refresh, setConfigLocations, setNamespace, setServletContext, toString

Methods inherited from class org.springframework.context.support.AbstractRefreshableApplicationContext

createBeanFactory, getBeanFactory, refreshBeanFactory

Methods inherited from class org.springframework.context.support.AbstractApplicationContext

addBeanFactoryPostProcessor, addListener, close, containsBean, containsBeanDefinition, getAliases, getBean, getBean, getBeanDefinitionCount, getBeanDefinitionNames, getBeanDefinitionNames, getBeanFactoryPostProcessors, getBeanNamesForType, getBeansOfType, getBeansOfType, getDisplayName, getInternalParentBeanFactory, getInternalParentMessageSource, getMessage, getMessage, getMessage, getParent, getParentBeanFactory, getResources, getStartupDate, getType, isSingleton, publishEvent, setDisplayName, setParent

Methods inherited from class org.springframework.core.io.DefaultResourceLoader

getClassLoader, getResource

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.springframework.context.ApplicationContext

getDisplayName, getParent, getStartupDate, publishEvent

Methods inherited from interface org.springframework.beans.factory.ListableBeanFactory

containsBeanDefinition, getBeanDefinitionCount, getBeanDefinitionNames, getBeanDefinitionNames, getBeanNamesForType, getBeansOfType, getBeansOfType

Methods inherited from interface org.springframework.beans.factory.BeanFactory

containsBean, getAliases, getBean, getBean, getType, isSingleton

Methods inherited from interface org.springframework.beans.factory.HierarchicalBeanFactory

getParentBeanFactory

Methods inherited from interface org.springframework.context.MessageSource

getMessage, getMessage, getMessage

Methods inherited from interface org.springframework.core.io.support.ResourcePatternResolver

getResources

Methods inherited from interface org.springframework.core.io.ResourceLoader

getResource

Methods inherited from interface org.springframework.context.ConfigurableApplicationContext

addBeanFactoryPostProcessor, close, getBeanFactory, setParent

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 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:

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.setValidating(boolean), XmlBeanDefinitionReader.setParserClass(java.lang.Class)

loadBeanDefinitions

protected void loadBeanDefinitions(XmlBeanDefinitionReader reader)
                            throws BeansException,
                                   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:

BeansException - in case of bean registration errors

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 AbstractRefreshableWebApplicationContext

See Also:

AbstractRefreshableWebApplicationContext.setConfigLocations(java.lang.String[])