Class FreeMarkerViewResolver

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.freemarker.FreeMarkerViewResolver

All Implemented Interfaces:

Aware, ApplicationContextAware, Ordered, ServletContextAware, ViewResolver

public class FreeMarkerViewResolver
extends AbstractTemplateViewResolver

Convenience subclass of UrlBasedViewResolver that supports FreeMarkerView (i.e. FreeMarker templates) and custom subclasses of it.

The view class for all views generated by this resolver can be specified via the "viewClass" property. See UrlBasedViewResolver for details.

Note: To ensure that the correct encoding is used when the rendering the response, set the content type with an appropriate charset attribute — for example, "text/html;charset=UTF-8"; however, it is not necessary to explicitly set the content type in the FreeMarkerViewResolver if you have set an explicit encoding via either FreeMarkerView.setEncoding(String), FreeMarkerConfigurationFactory.setDefaultEncoding(String), or Configuration.setDefaultEncoding(String).

Note: When chaining ViewResolvers, a FreeMarkerViewResolver will check for the existence of the specified template resources and only return a non-null View object if the template was actually found.

Note: Spring's FreeMarker support requires FreeMarker 2.3.33 or higher.

Since:

1.1

Author:

Juergen Hoeller, Sam Brannen

See Also:

• UrlBasedViewResolver.setViewClass(Class)
• UrlBasedViewResolver.setPrefix(String)
• UrlBasedViewResolver.setSuffix(String)
• UrlBasedViewResolver.setContentType(String)
• UrlBasedViewResolver.setRequestContextAttribute(String)
• AbstractTemplateViewResolver.setExposeSpringMacroHelpers(boolean)
• FreeMarkerView

Nested Class Summary

Nested classes/interfaces inherited from class AbstractCachingViewResolver

AbstractCachingViewResolver.CacheFilter

Field Summary

Fields inherited from class UrlBasedViewResolver

FORWARD_URL_PREFIX, REDIRECT_URL_PREFIX

Fields inherited from class AbstractCachingViewResolver

DEFAULT_CACHE_LIMIT

Fields inherited from class ApplicationObjectSupport

logger

Fields inherited from interface Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

Constructors

Constructor	Description
FreeMarkerViewResolver()	Sets the default view class to requiredViewClass(): by default FreeMarkerView.
FreeMarkerViewResolver(String prefix, String suffix)	A convenience constructor that allows for specifying prefix and suffix as constructor arguments.

Method Summary

Modifier and Type	Method	Description
protected AbstractUrlBasedView	instantiateView()	Instantiate the specified view class.
protected @nullable View	loadView(String viewName, Locale locale)	Delegates to super.loadView(viewName, locale) for standard behavior and then to postProcessView(FreeMarkerView) for customization.
protected void	postProcessView(FreeMarkerView freeMarkerView)	Post process the supplied FreeMarkerView after it has been loaded.
protected Class<?>	requiredViewClass()	Requires FreeMarkerView.

Methods inherited from class AbstractTemplateViewResolver

buildView, setAllowRequestOverride, setAllowSessionOverride, setExposeRequestAttributes, setExposeSessionAttributes, setExposeSpringMacroHelpers

Methods inherited from class UrlBasedViewResolver

applyLifecycleMethods, canHandle, createView, getAttributesMap, getCacheKey, getContentType, getExposeContextBeansAsAttributes, getExposedContextBeanNames, getExposePathVariables, getOrder, getPrefix, getRedirectHosts, getRequestContextAttribute, getSuffix, getViewClass, getViewNames, initApplicationContext, isRedirectContextRelative, isRedirectHttp10Compatible, setAttributes, setAttributesMap, setContentType, setExposeContextBeansAsAttributes, setExposedContextBeanNames, setExposePathVariables, setOrder, setPrefix, setRedirectContextRelative, setRedirectHosts, setRedirectHttp10Compatible, setRequestContextAttribute, setSuffix, setViewClass, setViewNames

Methods inherited from class AbstractCachingViewResolver

clearCache, getCacheFilter, getCacheLimit, isCache, isCacheUnresolved, removeFromCache, resolveViewName, setCache, setCacheFilter, setCacheLimit, setCacheUnresolved

Methods inherited from class WebApplicationObjectSupport

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

Methods inherited from class ApplicationObjectSupport

getApplicationContext, getMessageSourceAccessor, obtainApplicationContext, requiredContextClass, setApplicationContext

Methods inherited from class Object

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

Constructor Details

FreeMarkerViewResolver

public FreeMarkerViewResolver()

Sets the default view class to requiredViewClass(): by default FreeMarkerView.

FreeMarkerViewResolver

public FreeMarkerViewResolver(String prefix,
 String suffix)

A convenience constructor that allows for specifying prefix and suffix as constructor arguments.

Parameters:

prefix - the prefix that gets prepended to view names when building a URL

suffix - the suffix that gets appended to view names when building a URL

Since:

4.3

Method Details

requiredViewClass

protected Class<?> requiredViewClass()

Requires FreeMarkerView.

Overrides:

requiredViewClass in class AbstractTemplateViewResolver

See Also:

• UrlBasedViewResolver.instantiateView()
• AbstractUrlBasedView

instantiateView

protected AbstractUrlBasedView instantiateView()

Description copied from class: UrlBasedViewResolver

Instantiate the specified view class.

The default implementation uses reflection to instantiate the class.

Overrides:

instantiateView in class UrlBasedViewResolver

Returns:

a new instance of the view class

See Also:

• UrlBasedViewResolver.setViewClass(Class)

loadView

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

Delegates to super.loadView(viewName, locale) for standard behavior and then to postProcessView(FreeMarkerView) for customization.

Overrides:

loadView in class UrlBasedViewResolver

Parameters:

viewName - the name of the view to retrieve

locale - the Locale to retrieve the view for

Returns:

the View instance

Throws:

Exception - if the view couldn't be resolved

Since:

6.2

See Also:

• UrlBasedViewResolver.loadView(String, Locale)
• postProcessView(FreeMarkerView)

postProcessView

protected void postProcessView(FreeMarkerView freeMarkerView)

Post process the supplied FreeMarkerView after it has been loaded.

The default implementation attempts to override the content type of the view with "text/html;charset=<encoding>", where <encoding> is equal to an explicitly configured character encoding for the underlying FreeMarker template file. If an explicit content type has been configured for this view resolver or if no explicit character encoding has been configured for the template file, this method does not modify the supplied FreeMarkerView.

Since:

6.2

See Also:

• loadView(String, Locale)
• UrlBasedViewResolver.setContentType(String)
• AbstractView.setContentType(String)