类 DefaultResourceLoader

构造器详细资料

• DefaultResourceLoader

  public DefaultResourceLoader()

  Create a new DefaultResourceLoader.

  ClassLoader access will happen using the thread context class loader at the time of this ResourceLoader's initialization.

  另请参阅:

  Thread.getContextClassLoader()

• DefaultResourceLoader

  public DefaultResourceLoader​(@Nullable
                               ClassLoader classLoader)

  Create a new DefaultResourceLoader.

  参数:

  classLoader - the ClassLoader to load class path resources with, or null for using the thread context class loader at the time of actual resource access

方法详细资料

• setClassLoader

  public void setClassLoader​(@Nullable
                             ClassLoader classLoader)

  Specify the ClassLoader to load class path resources with, or null for using the thread context class loader at the time of actual resource access.

  The default is that ClassLoader access will happen using the thread context class loader at the time of this ResourceLoader's initialization.

• getClassLoader

  @Nullable
  public ClassLoader getClassLoader()

  Return the ClassLoader to load class path resources with.

  Will get passed to ClassPathResource's constructor for all ClassPathResource objects created by this resource loader.

  指定者:

  getClassLoader 在接口中 ResourceLoader

  返回:

  the ClassLoader (only null if even the system ClassLoader isn't accessible)

  另请参阅:

  ClassPathResource

• addProtocolResolver

  public void addProtocolResolver​(ProtocolResolver resolver)

  Register the given resolver with this resource loader, allowing for additional protocols to be handled.

  Any such resolver will be invoked ahead of this loader's standard resolution rules. It may therefore also override any default rules.

  从以下版本开始:

  4.3

  另请参阅:

  getProtocolResolvers()

• getProtocolResolvers

  public Collection<ProtocolResolver> getProtocolResolvers()

  Return the collection of currently registered protocol resolvers, allowing for introspection as well as modification.

  从以下版本开始:

  4.3

• getResourceCache

  public <T> Map<Resource,​T> getResourceCache​(Class<T> valueType)

  Obtain a cache for the given value type, keyed by Resource.

  参数:

  valueType - the value type, e.g. an ASM MetadataReader

  返回:

  the cache Map, shared at the ResourceLoader level

  从以下版本开始:

  5.0

• clearResourceCaches

  public void clearResourceCaches()

  Clear all resource caches in this resource loader.

  从以下版本开始:

  5.0

  另请参阅:

  getResourceCache(java.lang.Class<T>)

• getResource

  public Resource getResource​(String location)

  从接口复制的说明: ResourceLoader
  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.

  指定者:

  getResource 在接口中 ResourceLoader

  参数:

  location - the resource location

  返回:

  a corresponding Resource handle (never null)

  另请参阅:

  ResourceLoader.CLASSPATH_URL_PREFIX, Resource.exists(), InputStreamSource.getInputStream()

• getResourceByPath

  protected Resource getResourceByPath​(String path)

  Return a Resource handle for the resource at the given path.

  The default implementation supports class path locations. This should be appropriate for standalone implementations but can be overridden, e.g. for implementations targeted at a Servlet container.

  参数:

  path - the path to the resource

  返回:

  the corresponding Resource handle

  另请参阅:

  ClassPathResource, FileSystemXmlApplicationContext.getResourceByPath(java.lang.String), AbstractRefreshableWebApplicationContext.getResourceByPath(java.lang.String)