BeanNameViewResolver (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
Class BeanNameViewResolver

java.lang.Object
  org.springframework.context.support.ApplicationObjectSupport
      org.springframework.web.context.support.WebApplicationObjectSupport
          org.springframework.web.servlet.view.BeanNameViewResolver

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

public class BeanNameViewResolver
extends WebApplicationObjectSupport
implements ViewResolver, Ordered
extends WebApplicationObjectSupport
implements ViewResolver, Ordered

Simple implementation of ViewResolver that interprets a view name as bean name in the current application context, i.e. in the XML file of the executing DispatcherServlet.

This resolver can be handy for small applications, keeping all definitions ranging from controllers to views in the same place. For normal applications, XmlViewResolver will be the better choice, as it separates the XML view bean definitions into a dedicated views file. View beans should virtually never have references to any other application beans - such a separation will make this clear.

This ViewResolver does not support internationalization. Conside ResourceBundleViewResolver if you need to apply different view resources per locale.

Note: This ViewResolver implements the Ordered interface to allow for flexible participation in ViewResolver chaining. For example, some special views could be defined via this ViewResolver (giving it 0 as "order" value), while all remaining views could be resolved by a UrlBasedViewResolver.

Since:: 18.06.2003
Author:: Juergen Hoeller
See Also:: XmlViewResolver, ResourceBundleViewResolver, UrlBasedViewResolver

Field Summary

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

logger

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

BeanNameViewResolver()


Method Summary

int getOrder()
          Return the order value of this object, with a higher value meaning greater in terms of sorting.

View resolveViewName(String viewName, Locale locale)
          Resolve the given view by name.

void setOrder(int order)


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, initApplicationContext, 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.context.support.ApplicationObjectSupport
`logger`

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

Constructor Summary
`BeanNameViewResolver()`

Method Summary
`int`	`getOrder()` Return the order value of this object, with a higher value meaning greater in terms of sorting.
`View`	`resolveViewName(String viewName, Locale locale)` Resolve the given view by name.
`void`	`setOrder(int order)`

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, initApplicationContext, requiredContextClass, setApplicationContext`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

BeanNameViewResolver

public BeanNameViewResolver()

Method Detail

setOrder

public void setOrder(int order)

getOrder

public int getOrder()

Description copied from interface: Ordered

Return the order value of this object, with a higher value meaning greater in terms of sorting.

Normally starting with 0 or 1, with Ordered.LOWEST_PRECEDENCE indicating greatest. Same order values will result in arbitrary positions for the affected objects.

Higher value can be interpreted as lower priority, consequently the first object has highest priority (somewhat analogous to Servlet "load-on-startup" values).

Note that order values below 0 are reserved for framework purposes. Application-specified values should always be 0 or greater, with only framework components (internal or third-party) supposed to use lower values.

Specified by:: getOrder in interface Ordered

Returns:: the order value
See Also:: Ordered.LOWEST_PRECEDENCE

resolveViewName

public View resolveViewName(String viewName,
                            Locale locale)
                     throws BeansException

Description copied from interface: ViewResolver

Resolve the given view by name.

Note: To allow for ViewResolver chaining, a ViewResolver should return null if a view with the given name is not defined in it. However, this is not required: Some ViewResolvers will always attempt to build View objects with the given name, unable to return null (rather throwing an exception when View creation failed).

Specified by:: resolveViewName in interface ViewResolver

Parameters:: viewName - name of the view to resolve; locale - Locale in which to resolve the view. ViewResolvers that support internationalization should respect this.
Returns:: the View object, or null if not found (optional, to allow for ViewResolver chaining)
Throws:: BeansException