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

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org.springframework.web.servlet.mvc.support
Class ControllerClassNameHandlerMapping

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.mvc.support.ControllerClassNameHandlerMapping

All Implemented Interfaces:: ApplicationContextAware, Ordered, ServletContextAware, HandlerMapping

public class ControllerClassNameHandlerMapping
extends AbstractUrlHandlerMapping
implements HandlerMapping
extends AbstractUrlHandlerMapping
implements HandlerMapping

Implementation of HandlerMapping that follows a simple convention for generating URL path mappings from the class names of registered Controller and ThrowawayController beans.

For simple Controller implementations (those that handle a single request type), the convention is to take the short name of the Class, remove the 'Controller' suffix if it exists and return the remaining text, lowercased, as the mapping, with a leading /. For example:

WelcomeController -> /welcome*
HomeController -> /home*

For MultiActionControllers then a similar mapping is registered, except that all sub-paths are registed using the trailing wildcard pattern /*. For example:

WelcomeController -> /welcome/*
CatalogController -> /catalog/*

For MultiActionController it is often useful to use this mapping strategy in conjunction with the InternalPathMethodNameResolver.

Since:: 2.0
Author:: Rob Harrop, Juergen Hoeller
See Also:: Controller, ThrowawayController, MultiActionController

Field Summary

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

logger

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

PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

ControllerClassNameHandlerMapping()


Method Summary

protected void detectControllers()
          Detect all the Controller and ThrowawayController beans registered in the ApplicationContext and register a URL path mapping for each one based on rules defined here.

protected String generatePathMapping(Class beanClass)
          Generate the actual URL path for the given controller class.

protected void initApplicationContext()
          Calls the detectControllers() method in addition to the superclass's initialization.

protected boolean isEligibleForMapping(String beanName, Class beanClass)
          Determine whether the specified controller is excluded from this mapping.

protected void registerController(String beanName, Class beanClass)
          Register the controller with the given name, as defined in the current application context.

protected void registerControllers(Class controllerType)
          Register all controllers of the given type, searching the current DispatcherServlet's ApplicationContext for matching beans.

void setExcludedClasses(Class[] excludedClasses)
          Specify controller classes that should be excluded from this mapping.

void setExcludedPackages(String[] excludedPackages)
          Specify Java packages that should be excluded from this mapping.

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

exposePathWithinMapping, getHandlerInternal, getHandlerMap, getRootHandler, lookupHandler, registerHandler, registerHandler, setAlwaysUseFullPath, setLazyInitHandlers, setPathMatcher, setRootHandler, setUrlDecode, setUrlPathHelper

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

adaptInterceptor, extendInterceptors, getAdaptedInterceptors, getDefaultHandler, getHandler, getHandlerExecutionChain, getOrder, initInterceptors, setDefaultHandler, setInterceptors, setOrder

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

getServletContext, getTempDir, getWebApplicationContext, 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

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

getHandler

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

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

Fields inherited from interface org.springframework.core.Ordered
`HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE`

Constructor Summary
`ControllerClassNameHandlerMapping()`

Method Summary
`protected void`	`detectControllers()` Detect all the `Controller` and `ThrowawayController` beans registered in the `ApplicationContext` and register a URL path mapping for each one based on rules defined here.
`protected String`	`generatePathMapping(Class beanClass)` Generate the actual URL path for the given controller class.
`protected void`	`initApplicationContext()` Calls the `detectControllers()` method in addition to the superclass's initialization.
`protected boolean`	`isEligibleForMapping(String beanName, Class beanClass)` Determine whether the specified controller is excluded from this mapping.
`protected void`	`registerController(String beanName, Class beanClass)` Register the controller with the given name, as defined in the current application context.
`protected void`	`registerControllers(Class controllerType)` Register all controllers of the given type, searching the current DispatcherServlet's ApplicationContext for matching beans.
`void`	`setExcludedClasses(Class[] excludedClasses)` Specify controller classes that should be excluded from this mapping.
`void`	`setExcludedPackages(String[] excludedPackages)` Specify Java packages that should be excluded from this mapping.

Methods inherited from class org.springframework.web.servlet.handler.AbstractUrlHandlerMapping
`exposePathWithinMapping, getHandlerInternal, getHandlerMap, getRootHandler, lookupHandler, registerHandler, registerHandler, setAlwaysUseFullPath, setLazyInitHandlers, setPathMatcher, setRootHandler, setUrlDecode, setUrlPathHelper`

Methods inherited from class org.springframework.web.servlet.handler.AbstractHandlerMapping
`adaptInterceptor, extendInterceptors, getAdaptedInterceptors, getDefaultHandler, getHandler, getHandlerExecutionChain, getOrder, initInterceptors, setDefaultHandler, setInterceptors, setOrder`

Methods inherited from class org.springframework.web.context.support.WebApplicationObjectSupport
`getServletContext, getTempDir, getWebApplicationContext, 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`

Methods inherited from interface org.springframework.web.servlet.HandlerMapping
`getHandler`

Constructor Detail

ControllerClassNameHandlerMapping

public ControllerClassNameHandlerMapping()

Method Detail

setExcludedPackages

public void setExcludedPackages(String[] excludedPackages)

Specify Java packages that should be excluded from this mapping. Any classes in such a package (or any of its subpackages) will be ignored by this HandlerMapping.

Default is to exclude the entire "org.springframework.web.servlet.mvc" package, including its subpackages, since none of Spring's out-of-the-box Controller implementations is a reasonable candidate for this mapping strategy. Such controllers are typically handled by a separate HandlerMapping, e.g. a BeanNameUrlHandlerMapping, alongside this ControllerClassNameHandlerMapping for application controllers.

setExcludedClasses

public void setExcludedClasses(Class[] excludedClasses)

Specify controller classes that should be excluded from this mapping. Any such classes will simply be ignored by this HandlerMapping.

initApplicationContext

protected void initApplicationContext()

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

Overrides:: initApplicationContext in class AbstractHandlerMapping

See Also:: AbstractHandlerMapping.extendInterceptors(java.util.List), AbstractHandlerMapping.initInterceptors()

detectControllers

protected void detectControllers()
                          throws BeansException

Detect all the Controller and ThrowawayController beans registered in the ApplicationContext and register a URL path mapping for each one based on rules defined here.

Throws:: BeansException - if the controllers couldn't be obtained or registered
See Also:: generatePathMapping(Class)

registerControllers

protected void registerControllers(Class controllerType)
                            throws BeansException

Register all controllers of the given type, searching the current DispatcherServlet's ApplicationContext for matching beans.

Parameters:: controllerType - the type of controller to search for
Throws:: BeansException - if the controllers couldn't be obtained or registered

isEligibleForMapping

protected boolean isEligibleForMapping(String beanName,
                                       Class beanClass)

Determine whether the specified controller is excluded from this mapping.

Parameters:: beanName - the name of the controller bean; beanClass - the concrete class of the controller bean
Returns:: whether the specified class is excluded
See Also:: setExcludedPackages(java.lang.String[]), setExcludedClasses(java.lang.Class[])

registerController

protected void registerController(String beanName,
                                  Class beanClass)
                           throws BeansException,
                                  IllegalStateException

Parameters:: beanName - the name of the controller bean; beanClass - the concrete class of the controller bean
Throws:: BeansException - if the controller couldn't be registered; IllegalStateException - if there is a conflicting handler registered
See Also:: ApplicationObjectSupport.getApplicationContext()

generatePathMapping

protected String generatePathMapping(Class beanClass)

Generate the actual URL path for the given controller class.

Subclasses may choose to customize the paths that are generated by overriding this method.

Parameters:: beanClass - the controller bean class to generate a mapping for
Returns:: the URL path mapping for the given controller