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

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org.springframework.web.servlet.view.velocity
Class VelocityViewResolver

java.lang.Object
  org.springframework.context.support.ApplicationObjectSupport
      org.springframework.web.context.support.WebApplicationObjectSupport
          org.springframework.web.servlet.view.AbstractCachingViewResolver
              org.springframework.web.servlet.view.UrlBasedViewResolver
                  org.springframework.web.servlet.view.AbstractTemplateViewResolver
                      org.springframework.web.servlet.view.velocity.VelocityViewResolver

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

Direct Known Subclasses:: VelocityLayoutViewResolver

public class VelocityViewResolver
extends AbstractTemplateViewResolver
extends AbstractTemplateViewResolver

Convenience subclass of UrlBasedViewResolver that supports VelocityView (that is Velocity templates) and custom subclasses of it.

The view class for all views generated by this resolver can be specified via setViewClass. See UrlBasedViewResolver's javadoc for details.

Note: When chaining ViewResolvers, a VelocityViewResolver always needs to be last, as it will attempt to resolve any view name, no matter whether the underlying resource actually exists.

Since:: 13.12.2003
Author:: Juergen Hoeller
See Also:: UrlBasedViewResolver.setViewClass(java.lang.Class), UrlBasedViewResolver.setPrefix(java.lang.String), UrlBasedViewResolver.setSuffix(java.lang.String), UrlBasedViewResolver.setRequestContextAttribute(java.lang.String), AbstractTemplateViewResolver.setExposeSpringMacroHelpers(boolean), setVelocityFormatterAttribute(java.lang.String), setDateToolAttribute(java.lang.String), setNumberToolAttribute(java.lang.String), VelocityView

Field Summary

Fields inherited from class org.springframework.web.servlet.view.UrlBasedViewResolver

FORWARD_URL_PREFIX, REDIRECT_URL_PREFIX

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

logger

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

VelocityViewResolver()
          Sets default viewClass to requiredViewClass.

Method Summary

protected AbstractUrlBasedView buildView(String viewName)
          Creates a new View instance of the specified view class and configures it.

protected void initApplicationContext()
          Subclasses can override this for custom initialization behavior.

protected Class requiredViewClass()
          Requires VelocityView.

void setDateToolAttribute(String dateToolAttribute)
          Set the name of the DateTool helper object to expose in the Velocity context of this view, or null if not needed.

void setNumberToolAttribute(String numberToolAttribute)
          Set the name of the NumberTool helper object to expose in the Velocity context of this view, or null if not needed.

void setToolboxConfigLocation(String toolboxConfigLocation)
          Set a Velocity Toolbox config location, for example "/WEB-INF/toolbox.xml", to automatically load a Velocity Tools toolbox definition file and expose all defined tools in the specified scopes.

void setVelocityFormatterAttribute(String velocityFormatterAttribute)
          Set the name of the VelocityFormatter helper object to expose in the Velocity context of this view, or null if not needed.

Methods inherited from class org.springframework.web.servlet.view.AbstractTemplateViewResolver

setAllowRequestOverride, setAllowSessionOverride, setExposeRequestAttributes, setExposeSessionAttributes, setExposeSpringMacroHelpers

Methods inherited from class org.springframework.web.servlet.view.UrlBasedViewResolver

canHandle, createView, getAttributesMap, getCacheKey, getContentType, getOrder, getPrefix, getRequestContextAttribute, getSuffix, getViewClass, getViewNames, isRedirectContextRelative, isRedirectHttp10Compatible, loadView, setAttributes, setAttributesMap, setContentType, setOrder, setPrefix, setRedirectContextRelative, setRedirectHttp10Compatible, setRequestContextAttribute, setSuffix, setViewClass, setViewNames

Methods inherited from class org.springframework.web.servlet.view.AbstractCachingViewResolver

clearCache, isCache, removeFromCache, resolveViewName, setCache

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

Fields inherited from class org.springframework.web.servlet.view.UrlBasedViewResolver
`FORWARD_URL_PREFIX, REDIRECT_URL_PREFIX`

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

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

Constructor Summary
`VelocityViewResolver()` Sets default viewClass to `requiredViewClass`.

Method Summary
`protected AbstractUrlBasedView`	`buildView(String viewName)` Creates a new View instance of the specified view class and configures it.
`protected void`	`initApplicationContext()` Subclasses can override this for custom initialization behavior.
`protected Class`	`requiredViewClass()` Requires VelocityView.
`void`	`setDateToolAttribute(String dateToolAttribute)` Set the name of the DateTool helper object to expose in the Velocity context of this view, or `null` if not needed.
`void`	`setNumberToolAttribute(String numberToolAttribute)` Set the name of the NumberTool helper object to expose in the Velocity context of this view, or `null` if not needed.
`void`	`setToolboxConfigLocation(String toolboxConfigLocation)` Set a Velocity Toolbox config location, for example "/WEB-INF/toolbox.xml", to automatically load a Velocity Tools toolbox definition file and expose all defined tools in the specified scopes.
`void`	`setVelocityFormatterAttribute(String velocityFormatterAttribute)` Set the name of the VelocityFormatter helper object to expose in the Velocity context of this view, or `null` if not needed.

Methods inherited from class org.springframework.web.servlet.view.AbstractTemplateViewResolver
`setAllowRequestOverride, setAllowSessionOverride, setExposeRequestAttributes, setExposeSessionAttributes, setExposeSpringMacroHelpers`

Methods inherited from class org.springframework.web.servlet.view.UrlBasedViewResolver
`canHandle, createView, getAttributesMap, getCacheKey, getContentType, getOrder, getPrefix, getRequestContextAttribute, getSuffix, getViewClass, getViewNames, isRedirectContextRelative, isRedirectHttp10Compatible, loadView, setAttributes, setAttributesMap, setContentType, setOrder, setPrefix, setRedirectContextRelative, setRedirectHttp10Compatible, setRequestContextAttribute, setSuffix, setViewClass, setViewNames`

Methods inherited from class org.springframework.web.servlet.view.AbstractCachingViewResolver
`clearCache, isCache, removeFromCache, resolveViewName, setCache`

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`

Constructor Detail

VelocityViewResolver

public VelocityViewResolver()

Sets default viewClass to requiredViewClass.

See Also:: UrlBasedViewResolver.setViewClass(java.lang.Class), requiredViewClass()

Method Detail

requiredViewClass

protected Class requiredViewClass()

Requires VelocityView.

Overrides:: requiredViewClass in class AbstractTemplateViewResolver

See Also:: VelocityView

setVelocityFormatterAttribute

public void setVelocityFormatterAttribute(String velocityFormatterAttribute)

Set the name of the VelocityFormatter helper object to expose in the Velocity context of this view, or null if not needed. VelocityFormatter is part of the standard Velocity distribution.

See Also:: VelocityFormatter, VelocityView.setVelocityFormatterAttribute(java.lang.String)

setDateToolAttribute

public void setDateToolAttribute(String dateToolAttribute)

Set the name of the DateTool helper object to expose in the Velocity context of this view, or null if not needed. DateTool is part of Velocity Tools 1.0.

See Also:: DateTool, VelocityView.setDateToolAttribute(java.lang.String)

setNumberToolAttribute

public void setNumberToolAttribute(String numberToolAttribute)

Set the name of the NumberTool helper object to expose in the Velocity context of this view, or null if not needed. NumberTool is part of Velocity Tools 1.1.

See Also:: NumberTool, VelocityView.setNumberToolAttribute(java.lang.String)

setToolboxConfigLocation

public void setToolboxConfigLocation(String toolboxConfigLocation)

Set a Velocity Toolbox config location, for example "/WEB-INF/toolbox.xml", to automatically load a Velocity Tools toolbox definition file and expose all defined tools in the specified scopes. If no config location is specified, no toolbox will be loaded and exposed.

The specfied location string needs to refer to a ServletContext resource, as expected by ServletToolboxManager which is part of the view package of Velocity Tools.

Note: Specifying a toolbox config location will lead to VelocityToolboxView instances being created.

See Also:: ServletToolboxManager.getInstance(javax.servlet.ServletContext, java.lang.String), VelocityToolboxView.setToolboxConfigLocation(java.lang.String)

initApplicationContext

protected void initApplicationContext()

Description copied from class: ApplicationObjectSupport

Subclasses can override this for custom initialization behavior. Gets called by setApplicationContext after setting the context instance.

Note: Does not get called on reinitialization of the context but rather just on first initialization of this object's context reference.

Overrides:: initApplicationContext in class UrlBasedViewResolver

See Also:: ApplicationObjectSupport.setApplicationContext(org.springframework.context.ApplicationContext)

buildView

protected AbstractUrlBasedView buildView(String viewName)
                                  throws Exception

Description copied from class: UrlBasedViewResolver

Creates a new View instance of the specified view class and configures it. Does not perform any lookup for pre-defined View instances.

Spring lifecycle methods as defined by the bean container do not have to be called here; those will be applied by the loadView method after this method returns.

Subclasses will typically call super.buildView(viewName) first, before setting further properties themselves. loadView will then apply Spring lifecycle methods at the end of this process.

Overrides:: buildView in class AbstractTemplateViewResolver

Parameters:: viewName - the name of the view to build
Returns:: the View instance
Throws:: Exception - if the view couldn't be resolved
See Also:: UrlBasedViewResolver.loadView(String, java.util.Locale)