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

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org.springframework.context.support
Class ResourceMapFactoryBean

java.lang.Object
  org.springframework.core.io.support.PropertiesLoaderSupport
      org.springframework.beans.factory.config.PropertiesFactoryBean
          org.springframework.context.support.ResourceMapFactoryBean

All Implemented Interfaces:: FactoryBean, InitializingBean, ResourceLoaderAware

public class ResourceMapFactoryBean
extends PropertiesFactoryBean
implements ResourceLoaderAware
extends PropertiesFactoryBean
implements ResourceLoaderAware

FactoryBean that creates a Map with String keys and Resource values from properties, interpreting passed-in String values as resource locations.

Extends PropertiesFactoryBean to inherit the capability of defining local properties and loading from properties files.

Implements the ResourceLoaderAware interface to automatically use the context ResourceLoader if running in an ApplicationContext. Uses DefaultResourceLoader else.

Since:: 1.0.2
Author:: Juergen Hoeller, Keith Donald
See Also:: DefaultResourceLoader

Field Summary

Fields inherited from class org.springframework.core.io.support.PropertiesLoaderSupport

logger, XML_FILE_EXTENSION

Constructor Summary

ResourceMapFactoryBean()


Method Summary

protected Object createInstance()
          Create the Map instance, populated with keys and Resource values.

Class getObjectType()
          Return the type of object that this FactoryBean creates, or null if not known in advance.

protected Resource getResource(String location)
          Fetch the Resource handle for the given location, prepeding the resource base path.

void setResourceBasePath(String resourceBasePath)
          Set a base path to prepend to each resource location value in the properties file.

void setResourceLoader(ResourceLoader resourceLoader)
          Set the ResourceLoader that this object runs in.

Methods inherited from class org.springframework.beans.factory.config.PropertiesFactoryBean

afterPropertiesSet, getObject, isSingleton, setSingleton

Methods inherited from class org.springframework.core.io.support.PropertiesLoaderSupport

loadProperties, mergeProperties, setFileEncoding, setIgnoreResourceNotFound, setLocalOverride, setLocation, setLocations, setProperties, setPropertiesArray, setPropertiesPersister

Methods inherited from class java.lang.Object

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

Fields inherited from class org.springframework.core.io.support.PropertiesLoaderSupport
`logger, XML_FILE_EXTENSION`

Constructor Summary
`ResourceMapFactoryBean()`

Method Summary
`protected Object`	`createInstance()` Create the Map instance, populated with keys and Resource values.
`Class`	`getObjectType()` Return the type of object that this FactoryBean creates, or `null` if not known in advance.
`protected Resource`	`getResource(String location)` Fetch the Resource handle for the given location, prepeding the resource base path.
`void`	`setResourceBasePath(String resourceBasePath)` Set a base path to prepend to each resource location value in the properties file.
`void`	`setResourceLoader(ResourceLoader resourceLoader)` Set the ResourceLoader that this object runs in.

Methods inherited from class org.springframework.beans.factory.config.PropertiesFactoryBean
`afterPropertiesSet, getObject, isSingleton, setSingleton`

Methods inherited from class org.springframework.core.io.support.PropertiesLoaderSupport
`loadProperties, mergeProperties, setFileEncoding, setIgnoreResourceNotFound, setLocalOverride, setLocation, setLocations, setProperties, setPropertiesArray, setPropertiesPersister`

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

Constructor Detail

ResourceMapFactoryBean

public ResourceMapFactoryBean()

Method Detail

setResourceBasePath

public void setResourceBasePath(String resourceBasePath)

Set a base path to prepend to each resource location value in the properties file.

E.g.: resourceBasePath="/images", value="/test.gif" -> location="/images/test.gif"

setResourceLoader

public void setResourceLoader(ResourceLoader resourceLoader)

Description copied from interface: ResourceLoaderAware

Set the ResourceLoader that this object runs in.

This might be a ResourcePatternResolver, which can be checked through instanceof ResourcePatternResolver. See also the ResourcePatternUtils.getResourcePatternResolver method.

Invoked after population of normal bean properties but before an init callback like InitializingBean's afterPropertiesSet or a custom init-method. Invoked before ApplicationContextAware's setApplicationContext.

Specified by:: setResourceLoader in interface ResourceLoaderAware

Parameters:: resourceLoader - ResourceLoader object to be used by this object
See Also:: ResourcePatternResolver, ResourcePatternUtils.getResourcePatternResolver(org.springframework.core.io.ResourceLoader)

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 one to check for specific types of beans without instantiating objects, for example on autowiring.

In the case of implementations that are creating a singleton object, this method 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
Overrides:: getObjectType in class PropertiesFactoryBean

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)

createInstance

protected Object createInstance()
                         throws IOException

Create the Map instance, populated with keys and Resource values.

Overrides:: createInstance in class PropertiesFactoryBean

Returns:: the object returned by this factory
Throws:: IOException - if an exception occured during properties loading
See Also:: PropertiesLoaderSupport.mergeProperties()

getResource

protected Resource getResource(String location)

Fetch the Resource handle for the given location, prepeding the resource base path.

Parameters:: location - the resource location
Returns:: the Resource handle
See Also:: ResourceLoader.getResource(String)