接口 ResourceLoader
- 所有已知子接口:
ApplicationContext
,ConfigurableApplicationContext
,ConfigurablePortletApplicationContext
,ConfigurableWebApplicationContext
,ResourcePatternResolver
,WebApplicationContext
- 所有已知实现类:
AbstractApplicationContext
,AbstractRefreshableApplicationContext
,AbstractRefreshableConfigApplicationContext
,AbstractRefreshablePortletApplicationContext
,AbstractRefreshableWebApplicationContext
,AbstractXmlApplicationContext
,AnnotationConfigApplicationContext
,AnnotationConfigWebApplicationContext
,ClassPathXmlApplicationContext
,ClassRelativeResourceLoader
,DefaultResourceLoader
,FileSystemResourceLoader
,FileSystemXmlApplicationContext
,GenericApplicationContext
,GenericGroovyApplicationContext
,GenericWebApplicationContext
,GenericXmlApplicationContext
,GroovyWebApplicationContext
,PathMatchingResourcePatternResolver
,PortletContextResourceLoader
,PortletContextResourcePatternResolver
,ResourceAdapterApplicationContext
,ServletContextResourceLoader
,ServletContextResourcePatternResolver
,StaticApplicationContext
,StaticPortletApplicationContext
,StaticWebApplicationContext
,XmlPortletApplicationContext
,XmlWebApplicationContext
public interface ResourceLoader
Strategy interface for loading resources (e.. class path or file system resources). AnApplicationContext
is required to provide this functionality, plus extendedResourcePatternResolver
support.DefaultResourceLoader
is a standalone implementation that is usable outside an ApplicationContext, also used byResourceEditor
.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.
- 从以下版本开始:
- 10.03.2004
- 作者:
- Juergen Hoeller
- 另请参阅:
Resource
,ResourcePatternResolver
,ApplicationContext
,ResourceLoaderAware
字段概要
字段 修饰符和类型 字段 说明 static String
CLASSPATH_URL_PREFIX
Pseudo URL prefix for loading from the class path: "classpath:"
方法概要
所有方法 实例方法 抽象方法 修饰符和类型 方法 说明 ClassLoader
getClassLoader()
Expose the ClassLoader used by this ResourceLoader.Resource
getResource(String location)
Return a Resource handle for the specified resource location.
字段详细资料
CLASSPATH_URL_PREFIX
static final String CLASSPATH_URL_PREFIX
Pseudo URL prefix for loading from the class path: "classpath:"- 另请参阅:
- 常量字段值
方法详细资料
getResource
Resource getResource(String location)
Return a Resource handle for the specified resource location.The handle should always be a reusable resource descriptor, allowing for multiple
InputStreamSource.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.exists()
to check for existence.- 参数:
location
- the resource location- 返回:
- a corresponding Resource handle (never
null
) - 另请参阅:
CLASSPATH_URL_PREFIX
,Resource.exists()
,InputStreamSource.getInputStream()
getClassLoader
ClassLoader getClassLoader()
Expose the ClassLoader used by this ResourceLoader.Clients which need to access the ClassLoader directly can do so in a uniform manner with the ResourceLoader, rather than relying on the thread context ClassLoader.
- 返回:
- the ClassLoader (only
null
if even the system ClassLoader isn't accessible) - 另请参阅:
ClassUtils.getDefaultClassLoader()