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

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org.springframework.core.io
Interface ResourceLoader

All Known Subinterfaces:: ApplicationContext, ConfigurableApplicationContext, ConfigurableWebApplicationContext, ResourcePatternResolver, WebApplicationContext

All Known Implementing Classes:: AbstractApplicationContext, AbstractRefreshableApplicationContext, AbstractRefreshableWebApplicationContext, AbstractXmlApplicationContext, ClassPathXmlApplicationContext, DefaultResourceLoader, FileSystemResourceLoader, FileSystemXmlApplicationContext, GenericApplicationContext, GenericWebApplicationContext, PathMatchingResourcePatternResolver, ServletContextResourceLoader, ServletContextResourcePatternResolver, StaticApplicationContext, StaticWebApplicationContext, XmlWebApplicationContext

public interface ResourceLoader

Interface to be implemented by objects that can load resources. An ApplicationContext is required to provide this functionality, plus extended ResourcePatternResolver support.

DefaultResourceLoader is a standalone implementation that is usable outside an ApplicationContext, also used by ResourceEditor.

Bean properties of type Resource and Resource array can be populated from Strings when running in an ApplicationContext, using the particular context's resource loading strategy.

Since:: 10.03.2004
Author:: Juergen Hoeller
See Also:: DefaultResourceLoader, ResourceEditor, ResourcePatternResolver, ApplicationContext, ResourceLoaderAware

Field Summary

static String CLASSPATH_URL_PREFIX
Pseudo URL prefix for loading from the class path: "classpath:"

Method Summary

Resource getResource(String location)
Return a Resource handle for the specified resource.

Field Summary
`static String`	`CLASSPATH_URL_PREFIX` Pseudo URL prefix for loading from the class path: "classpath:"

Method Summary
`Resource`	`getResource(String location)` Return a Resource handle for the specified resource.

Field Detail

CLASSPATH_URL_PREFIX

static final String CLASSPATH_URL_PREFIX

Pseudo URL prefix for loading from the class path: "classpath:"

See Also:: Constant Field Values

Method Detail

getResource

Resource getResource(String location)

Return a Resource handle for the specified resource. The handle should always be a reusable resource descriptor, allowing for multiple getInputStream calls.

Must support fully qualified URLs, e.g. "file:C:/test.dat".
Must support classpath pseudo-URLs, e.g. "classpath:test.dat".
Should support relative file paths, e.g. "WEB-INF/test.dat". (This will be implementation-specific, typically provided by an ApplicationContext implementation.)

Note that a Resource handle does not imply an existing resource; you need to invoke Resource's "exists" to check for existence.

Parameters:: location - the resource location
Returns:: a corresponding Resource handle
See Also:: CLASSPATH_URL_PREFIX, Resource.exists(), InputStreamSource.getInputStream()