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

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org.springframework.ui.freemarker
Class FreeMarkerConfigurationFactoryBean

java.lang.Object
  extended by org.springframework.ui.freemarker.FreeMarkerConfigurationFactory
      extended by org.springframework.ui.freemarker.FreeMarkerConfigurationFactoryBean
All Implemented Interfaces:
FactoryBean, InitializingBean, ResourceLoaderAware
public class FreeMarkerConfigurationFactoryBean
extends FreeMarkerConfigurationFactory
implements FactoryBean, InitializingBean, ResourceLoaderAware

Factory bean that creates a FreeMarker Configuration and provides it as bean reference. This bean is intended for any kind of usage of FreeMarker in application code, e.g. for generating email content. For web views, FreeMarkerConfigurer is used to set up a FreeMarkerConfigurationFactory. The simplest way to use this class is to specify just a "templateLoaderPath"; you do not need any further configuration then. For example, in a web application context: 

 <bean id="freemarkerConfiguration" class="org.springframework.ui.freemarker.FreeMarkerConfigurationFactoryBean">
   <property name="templateLoaderPath"><value>/WEB-INF/freemarker/</value></property>
 </bean>
See the base class FreeMarkerConfigurationFactory for configuration details.

Note: Spring's FreeMarker support requires FreeMarker 2.3 or higher.

Since:
03.03.2004
Author:
Darren Davison
See Also:
FreeMarkerConfigurationFactory.setConfigLocation(org.springframework.core.io.Resource), FreeMarkerConfigurationFactory.setFreemarkerSettings(java.util.Properties), FreeMarkerConfigurationFactory.setTemplateLoaderPath(java.lang.String), FreeMarkerConfigurer

Field Summary
 
Fields inherited from class org.springframework.ui.freemarker.FreeMarkerConfigurationFactory
logger
 
Constructor Summary
FreeMarkerConfigurationFactoryBean()
           
 
Method Summary
 void afterPropertiesSet()
          Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
 Object getObject()
          Return an instance (possibly shared or independent) of the object managed by this factory.
 Class getObjectType()
          Return the type of object that this FactoryBean creates, or null if not known in advance.
 boolean isSingleton()
          Is the bean managed by this factory a singleton or a prototype?
 
Methods inherited from class org.springframework.ui.freemarker.FreeMarkerConfigurationFactory
createConfiguration, getAggregateTemplateLoader, getResourceLoader, getTemplateLoaderForPath, isPreferFileSystemAccess, newConfiguration, postProcessConfiguration, postProcessTemplateLoaders, setConfigLocation, setDefaultEncoding, setFreemarkerSettings, setFreemarkerVariables, setPreferFileSystemAccess, setResourceLoader, setTemplateLoaderPath, setTemplateLoaderPaths, setTemplateLoaders
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.springframework.context.ResourceLoaderAware
setResourceLoader
 

Constructor Detail

FreeMarkerConfigurationFactoryBean

public FreeMarkerConfigurationFactoryBean()
Method Detail

afterPropertiesSet

public void afterPropertiesSet()
                        throws IOException,
                               TemplateException
Description copied from interface: InitializingBean
Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

This method allows the bean instance to perform initialization only possible when all bean properties have been set and to throw an exception in the event of misconfiguration.

Specified by:
afterPropertiesSet in interface InitializingBean
Throws:
IOException
TemplateException

getObject

public Object getObject()
Description copied from interface: FactoryBean
Return an instance (possibly shared or independent) of the object managed by this factory. As with a BeanFactory, this allows support for both the Singleton and Prototype design pattern.

If this method returns null, the factory will consider the FactoryBean as not fully initialized and throw a corresponding FactoryBeanNotInitializedException.

Specified by:
getObject in interface FactoryBean
Returns:
an instance of the bean (should not be null; a null value will be considered as an indication of incomplete initialization)
See Also:
FactoryBeanNotInitializedException

getObjectType

public Class getObjectType()
Description copied from interface: FactoryBean
Return the type of object that this FactoryBean creates, or null if not known in advance. This allows to check for specific types of beans without instantiating objects, for example on autowiring.

For a singleton, this should try to avoid singleton creation as far as possible; it should rather estimate the type in advance. For prototypes, returning a meaningful type here is advisable too.

This method can be called before this FactoryBean has been fully initialized. It must not rely on state created during initialization; of course, it can still use such state if available.

NOTE: Autowiring will simply ignore FactoryBeans that return null here. Therefore it is highly recommended to implement this method properly, using the current state of the FactoryBean.

Specified by:
getObjectType in interface FactoryBean
Returns:
the type of object that this FactoryBean creates, or null if not known at the time of the call
See Also:
ListableBeanFactory.getBeansOfType(java.lang.Class)

isSingleton

public boolean isSingleton()
Description copied from interface: FactoryBean
Is the bean managed by this factory a singleton or a prototype? That is, will getObject() always return the same object (a reference that can be cached)?

NOTE: If a FactoryBean indicates to hold a singleton object, the object returned from getObject() might get cached by the owning BeanFactory. Hence, do not return true unless the FactoryBean always exposes the same reference.

The singleton status of the FactoryBean itself will generally be provided by the owning BeanFactory; usually, it has to be defined as singleton there.

Specified by:
isSingleton in interface FactoryBean
Returns:
if this bean is a singleton
See Also:
FactoryBean.getObject()
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