org.springframework.web.servlet.handler
Class AbstractDetectingUrlHandlerMapping

java.lang.Object
  org.springframework.context.support.ApplicationObjectSupport
      org.springframework.web.context.support.WebApplicationObjectSupport
          org.springframework.web.servlet.handler.AbstractHandlerMapping
              org.springframework.web.servlet.handler.AbstractUrlHandlerMapping
                  org.springframework.web.servlet.handler.AbstractDetectingUrlHandlerMapping

All Implemented Interfaces:

Aware, ApplicationContextAware, Ordered, ServletContextAware, HandlerMapping

Direct Known Subclasses:

AbstractControllerUrlHandlerMapping, BeanNameUrlHandlerMapping, DefaultAnnotationHandlerMapping

public abstract class AbstractDetectingUrlHandlerMapping
extends AbstractUrlHandlerMapping

Abstract implementation of the HandlerMapping interface, detecting URL mappings for handler beans through introspection of all defined beans in the application context.

Since:

2.5

Author:

Juergen Hoeller

See Also:

determineUrlsForHandler(java.lang.String)

Field Summary

Fields inherited from class org.springframework.context.support.ApplicationObjectSupport

logger

Fields inherited from interface org.springframework.web.servlet.HandlerMapping

BEST_MATCHING_PATTERN_ATTRIBUTE, INTROSPECT_TYPE_LEVEL_MAPPING, PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE, PRODUCIBLE_MEDIA_TYPES_ATTRIBUTE, URI_TEMPLATE_VARIABLES_ATTRIBUTE

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

AbstractDetectingUrlHandlerMapping()

Method Summary

protected void	detectHandlers() Register all handlers found in the current ApplicationContext.
protected abstract String[]	determineUrlsForHandler(String beanName) Determine the URLs for the given handler bean.
void	initApplicationContext() Calls the detectHandlers() method in addition to the superclass's initialization.
void	setDetectHandlersInAncestorContexts(boolean detectHandlersInAncestorContexts) Set whether to detect handler beans in ancestor ApplicationContexts.

Methods inherited from class org.springframework.web.servlet.handler.AbstractUrlHandlerMapping

buildPathExposingHandler, exposePathWithinMapping, exposeUriTemplateVariables, getHandlerInternal, getHandlerMap, getRootHandler, lookupHandler, registerHandler, registerHandler, setLazyInitHandlers, setRootHandler, supportsTypeLevelMappings, validateHandler

Methods inherited from class org.springframework.web.servlet.handler.AbstractHandlerMapping

adaptInterceptor, detectMappedInterceptors, extendInterceptors, getAdaptedInterceptors, getDefaultHandler, getHandler, getHandlerExecutionChain, getMappedInterceptors, getOrder, getPathMatcher, getUrlPathHelper, initInterceptors, setAlwaysUseFullPath, setDefaultHandler, setInterceptors, setOrder, setPathMatcher, setUrlDecode, setUrlPathHelper

Methods inherited from class org.springframework.web.context.support.WebApplicationObjectSupport

getServletContext, getTempDir, getWebApplicationContext, initApplicationContext, initServletContext, isContextRequired, setServletContext

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

getApplicationContext, getMessageSourceAccessor, requiredContextClass, setApplicationContext

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractDetectingUrlHandlerMapping

public AbstractDetectingUrlHandlerMapping()

Method Detail

setDetectHandlersInAncestorContexts

public void setDetectHandlersInAncestorContexts(boolean detectHandlersInAncestorContexts)

Set whether to detect handler beans in ancestor ApplicationContexts.

Default is "false": Only handler beans in the current ApplicationContext will be detected, i.e. only in the context that this HandlerMapping itself is defined in (typically the current DispatcherServlet's context).

Switch this flag on to detect handler beans in ancestor contexts (typically the Spring root WebApplicationContext) as well.

initApplicationContext

public void initApplicationContext()
                            throws ApplicationContextException

Calls the detectHandlers() method in addition to the superclass's initialization.

Overrides:

initApplicationContext in class AbstractHandlerMapping

Throws:

ApplicationContextException - in case of initialization errors

See Also:

AbstractHandlerMapping.extendInterceptors(java.util.List), AbstractHandlerMapping.initInterceptors()

detectHandlers

protected void detectHandlers()
                       throws BeansException

Register all handlers found in the current ApplicationContext.

The actual URL determination for a handler is up to the concrete determineUrlsForHandler(String) implementation. A bean for which no such URLs could be determined is simply not considered a handler.

Throws:

BeansException - if the handler couldn't be registered

See Also:

determineUrlsForHandler(String)

determineUrlsForHandler

protected abstract String[] determineUrlsForHandler(String beanName)

Determine the URLs for the given handler bean.

Parameters:

beanName - the name of the candidate bean

Returns:

the URLs determined for the bean, or null or an empty array if none