ResourceBundleViewResolver (Spring Framework) - Spring Framework 1.2.9 API 文档英文版

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org.springframework.web.servlet.view
Class ResourceBundleViewResolver

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.ResourceBundleViewResolver

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

public class ResourceBundleViewResolver
extends AbstractCachingViewResolver
implements Ordered, DisposableBean
extends AbstractCachingViewResolver
implements Ordered, DisposableBean

Implementation of ViewResolver that uses bean definitions in a ResourceBundle, specified by the bundle basename. The bundle is typically defined in a properties file, located in the class path. The default bundle basename is "views".

This ViewResolver supports localized view definitions, using the default support of java.util.PropertyResourceBundle. For example, the basename "views" will be resolved as class path resources "views_de_AT.properties", "views_de.properties", "views.properties" - for a given Locale "de_AT".

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.

Author:: Rod Johnson, Juergen Hoeller
See Also:: ResourceBundle.getBundle(java.lang.String), PropertyResourceBundle, UrlBasedViewResolver

Field Summary

static String DEFAULT_BASENAME
          Default if no other basename is supplied

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

logger

Constructor Summary

ResourceBundleViewResolver()


Method Summary

void destroy()
          Close the bundle bean factories on context shutdown.

protected ResourceBundle getBundle(String basename, Locale locale)
          Obtain the resource bundle for the given basename and Locale.

protected ClassLoader getBundleClassLoader()
          Return the ClassLoader to load resource bundles with.

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

protected BeanFactory initFactory(Locale locale)
          Initialize the BeanFactory from the ResourceBundle, for the given locale.

protected View loadView(String viewName, Locale locale)
          Subclasses must implement this method.

void setBasename(String basename)
          Set the basename, as defined in the java.util.ResourceBundle documentation.

void setBasenames(String[] basenames)
          Set multiple ResourceBundle basenames.

void setBundleClassLoader(ClassLoader classLoader)
          Set the ClassLoader to load resource bundles with.

void setDefaultParentView(String defaultParentView)
          Set the default parent for views defined in the ResourceBundle.

void setOrder(int order)


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

clearCache, createView, getCacheKey, isCache, removeFromCache, resolveViewName, setCache

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

getServletContext, getTempDir, getWebApplicationContext, isContextRequired

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

Field Summary
`static String`	`DEFAULT_BASENAME` Default if no other basename is supplied

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

Constructor Summary
`ResourceBundleViewResolver()`

Method Summary
`void`	`destroy()` Close the bundle bean factories on context shutdown.
`protected ResourceBundle`	`getBundle(String basename, Locale locale)` Obtain the resource bundle for the given basename and Locale.
`protected ClassLoader`	`getBundleClassLoader()` Return the ClassLoader to load resource bundles with.
`int`	`getOrder()` Return the order value of this object, higher value meaning greater in terms of sorting.
`protected BeanFactory`	`initFactory(Locale locale)` Initialize the BeanFactory from the ResourceBundle, for the given locale.
`protected View`	`loadView(String viewName, Locale locale)` Subclasses must implement this method.
`void`	`setBasename(String basename)` Set the basename, as defined in the java.util.ResourceBundle documentation.
`void`	`setBasenames(String[] basenames)` Set multiple ResourceBundle basenames.
`void`	`setBundleClassLoader(ClassLoader classLoader)` Set the ClassLoader to load resource bundles with.
`void`	`setDefaultParentView(String defaultParentView)` Set the default parent for views defined in the ResourceBundle.
`void`	`setOrder(int order)`

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

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

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`

Field Detail

DEFAULT_BASENAME

public static final String DEFAULT_BASENAME

Default if no other basename is supplied

See Also:: Constant Field Values

Constructor Detail

ResourceBundleViewResolver

public ResourceBundleViewResolver()

Method Detail

setOrder

public void setOrder(int order)

getOrder

public int getOrder()

Description copied from interface: Ordered

Return the order value of this object, higher value meaning greater in terms of sorting. Normally starting with 0 or 1, Integer.MAX_VALUE 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).

Specified by:: getOrder in interface Ordered

Returns:: the order value

setBasename

public void setBasename(String basename)

Set the basename, as defined in the java.util.ResourceBundle documentation. ResourceBundle supports different suffixes. For example, a base name of "views" might map to ResourceBundle files "views", "views_en_au" and "views_de".

The default is "views".

Parameters:: basename - the ResourceBundle basename
See Also:: setBasenames(java.lang.String[]), ResourceBundle

setBasenames

public void setBasenames(String[] basenames)

Set multiple ResourceBundle basenames.

Parameters:: basenames - multiple ResourceBundle basenames
See Also:: setBasename(java.lang.String)

setBundleClassLoader

public void setBundleClassLoader(ClassLoader classLoader)

Set the ClassLoader to load resource bundles with. Default is the thread context ClassLoader.

getBundleClassLoader

protected ClassLoader getBundleClassLoader()

Return the ClassLoader to load resource bundles with. Default is the specified bundle ClassLoader, usually the thread context ClassLoader.

setDefaultParentView

public void setDefaultParentView(String defaultParentView)

Set the default parent for views defined in the ResourceBundle. This avoids repeated "yyy1.parent=xxx", "yyy2.parent=xxx" definitions in the bundle, especially if all defined views share the same parent.

The parent will typically define the view class and common attributes. Concrete views might simply consist of an URL definition then: a la "yyy1.url=/my.jsp", "yyy2.url=/your.jsp".

View definitions that define their own parent or carry their own class can still override this. Strictly speaking, the rule that a default parent setting does not apply to a bean definition that carries a class is there for backwards compatiblity reasons. It still matches the typical use case.

Parameters:: defaultParentView - the default parent view

loadView

protected View loadView(String viewName,
                        Locale locale)
                 throws Exception

Description copied from class: AbstractCachingViewResolver

Subclasses must implement this method. There need be no concern for efficiency, as this class will cache views.

Not all subclasses may support internationalization: A subclass that doesn't can simply ignore the locale parameter.

NOTE: As of Spring 1.2, subclasses are supposed to fully initialize the View objects before returning them, also applying bean container initialization callbacks.

Specified by:: loadView in class AbstractCachingViewResolver

Parameters:: viewName - the name of the view to retrieve; locale - the Locale to retrieve the view for
Returns:: the View instance, or null if not found (optional, to allow for ViewResolver chaining)
Throws:: Exception - if the view couldn't be resolved
See Also:: AbstractCachingViewResolver.resolveViewName(java.lang.String, java.util.Locale)

initFactory

protected BeanFactory initFactory(Locale locale)
                           throws Exception

Initialize the BeanFactory from the ResourceBundle, for the given locale. Synchronized because of access by parallel threads.

Throws:: Exception

getBundle

protected ResourceBundle getBundle(String basename,
                                   Locale locale)
                            throws MissingResourceException

Obtain the resource bundle for the given basename and Locale.

Parameters:: basename - the basename to look for; locale - the Locale to look for
Returns:: the corresponding ResourceBundle
Throws:: MissingResourceException - if no matching bundle could be found
See Also:: ResourceBundle.getBundle(String, java.util.Locale, ClassLoader)

destroy

public void destroy()
             throws BeansException

Close the bundle bean factories on context shutdown.

Specified by:: destroy in interface DisposableBean

Throws:: BeansException